MX15 Series AC and DC Power Source User Manual

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MX15 Series AC and DC Power Source User Manual | Manualzz

MX15 Series

AC and DC Power Source

User Manual

Revision M

Feb 2015

Copyright

2006 - 2015

AMETEK Programmable Power

All rights reserved.

P/N 7005-960

User Manual

– Rev M

User's Manual

AC Power Source

Models:

MX15-1

MX15-1P

MX15-1Pi

MX30/2-1

MX45/3-1

MX30/2-1Pi (-MB)

MX45/3-1Pi (-MB)

Copyright 2006 - 2015, AMETEK Programmable Power.

California Instruments

MX15 2

User Manual

– Rev M

California Instruments

About AMETEK

AMETEK Programmable Power, Inc., a Division of AMETEK, Inc., is a global leader in the design and manufacture of precision, programmable power supplies for R&D, test and measurement, process control, power bus simulation and power conditioning applications across diverse industrial segments.

From bench top supplies to rack-mounted industrial power subsystems, AMETEK Programmable Power is the proud manufacturer of Elgar, Sorensen, California Instruments and Power Ten brand power supplies.

AMETEK, Inc. is a leading global manufacturer of electronic instruments and electromechanical devices with annualized sales of $2.5 billion. The Company has over 11,000 colleagues working at more than 80 manufacturing facilities and more than 80 sales and service centers in the United States and around the world.

Trademarks

AMETEK is a registered trademark of AMETEK, Inc. California Instruments is a trademark owned by

AMETEK, Inc. Other trademarks, registered trademarks, and product names are the property of their respective owners and are used herein for identification purposes only.

Notice of Copyright

MX Series User Manual

© 2003-2010 AMETEK Programmable Power, Inc. All rights reserved.

Exclusion for Documentation

UNLESS SPECIFICALLY AGREED TO IN WRITING, AMETEK PROGRAMMABLE POWER, INC. (“AMETEK”):

(a) MAKES NO WARRANTY AS TO THE ACCURACY, SUFFICIENCY OR SUITABILITY OF ANY TECHNICAL

OR OTHER INFORMATION PROVIDED IN ITS MANUALS OR OTHER DOCUMENTATION.

(b) ASSUMES NO RESPONSIBILITY OR LIABILITY FOR LOSSES, DAMAGES, COSTS OR EXPENSES,

WHETHER SPECIAL, DIRECT, INDIRECT, CONSEQUENTIAL OR INCIDENTAL, WHICH MIGHT ARISE

OUT OF THE USE OF SUCH INFORMATION. THE USE OF ANY SUCH INFORMATION WILL BE

ENTIRELY AT THE USER’S RISK, AND

(c) REMINDS YOU THAT IF THIS MANUAL IS IN ANY LANGUAGE OTHER THAN ENGLISH, ALTHOUGH

STEPS HAVE BEEN TAKEN TO MAINTAIN THE ACCURACY OF THE TRANSLATION, THE ACCURACY

CANNOT BE GUARANTEED. APPROVED AMETEK CONTENT IS CONTAINED WITH THE ENGLISH

LANGUAGE VERSION, WHICH IS POSTED AT WWW.PROGRAMMABLEPOWER.COM.

Date and Revision

February 2015 Revision M

Part Number

7005-960

Contact Information

Telephone: 800 733 5427 (toll free in North America)

858 450 0085 (direct)

Fax:

Email:

Web:

858 458 0267 [email protected] [email protected] www.programmablepower.com

MX15 3

User Manual

– Rev M

California Instruments

Important Safety Instructions

Before applying power to the system, verify that your product is configured properly for your particular application.

WARNING

Hazardous voltages may be present when covers are removed. Qualified personnel must use extreme caution when servicing this equipment.

Circuit boards, test points, and output voltages also may be floating above

(below) chassis ground.

WARNING

The equipment used contains ESD sensitive parts. When installing equipment, follow ESD Safety Procedures. Electrostatic discharges might cause damage to the equipment.

Only qualified personnel who deal with attendant hazards in power supplies, are allowed to perform installation and servicing.

Ensure that the AC power line ground is connected properly to the Power Rack input connector or chassis.

Similarly, other power ground lines including those to application and maintenance equipment must be grounded properly for both personnel and equipment safety.

Always ensure that facility AC input power is de-energized prior to connecting or disconnecting any cable.

In normal operation, the operator does not have access to hazardous voltages within the chassis. However, depending on the user’s application configuration, HIGH VOLTAGES HAZARDOUS TO HUMAN SAFETY may be normally generated on the output terminals. The customer/user must ensure that the output power lines are labeled properly as to the safety hazards and that any inadvertent contact with hazardous voltages is eliminated.

Guard against risks of electrical shock during open cover checks by not touching any portion of the electrical circuits. Even when power is off, capacitors may retain an electrical charge. Use safety glasses during open cover checks to avoid personal injury by any sudden component failure.

Neither AMETEK Programmable Power Inc., San Diego, California, USA, nor any of the subsidiary sales organizations can accept any responsibility for personnel, material or inconsequential injury, loss or damage that results from improper use of the equipment and accessories.

SAFETY SYMBOLS

MX15 4

User Manual

– Rev M

California Instruments

Product Family: MX Series AC Power Source

Warranty Period: 1 Year

WARRANTY TERMS

AMETEK Programmable Power, Inc. (“AMETEK”), provides this written warranty covering the Product stated above, and if the Buyer discovers and notifies AMETEK in writing of any defect in material or workmanship within the applicable warranty period stated above, then AMETEK may, at its option: repair or replace the Product; or issue a credit note for the defective Product; or provide the Buyer with replacement parts for the Product.

The Buyer will, at its expense, return the defective Product or parts thereof to AMETEK in accordance with the return procedure specified below. AMETEK will, at its expense, deliver the repaired or replaced

Product or parts to the Buyer. Any warranty of AMETEK will not apply if the Buyer is in default under the

Purchase Order Agreement or where the Product or any part thereof:

 is damaged by misuse, accident, negligence or failure to maintain the same as specified or required by AMETEK; is damaged by modifications, alterations or attachments thereto which are not authorized by AMETEK; is installed or operated contrary to the instructions of AMETEK; is opened, modified or disassembled in any way without AMETEK’s consent; or is used in combination with items, articles or materials not authorized by AMETEK.

The Buyer may not assert any claim that the Products are not in conformity with any warranty until the

Buyer has made all payments to AMETEK provided for in the Purchase Order Agreement.

PRODUCT RETURN PROCEDURE

Request a Return Material Authorization (RMA) number from the repair facility (must be done in the

country in which it was purchased):

In the USA, contact the AMETEK Repair Department prior to the return of the product to

AMETEK for repair:

Telephone: 800-733-5427, ext. 2295 or ext. 2463 (toll free North America)

858-450-0085, ext. 2295 or ext. 2463 (direct)

Outside the United States, contact the nearest Authorized Service Center (ASC). A full listing can be found either through your local distributor or our website, www.programmablepower.com, by clicking Support and going to the Service Centers tab.

When requesting an RMA, have the following information ready:

Model number

Serial number

Description of the problem

NOTE: Unauthorized returns will not be accepted and will be returned at the shipper’s expense.

NOTE: A returned product found upon inspection by AMETEK, to be in specification is subject to an evaluation fee and applicable freight charges.

MX15 5

User Manual

– Rev M

California Instruments

Table of Contents

1 Introduction ................................................................................................................................... 10

1.1

General Description ........................................................................................................................ 10

1.2

Manual organization and format ...................................................................................................... 10

2 Specifications ................................................................................................................................ 11

2.1

Electrical ......................................................................................................................................... 11

2.2

Mechanical ...................................................................................................................................... 19

2.3

Environmental ................................................................................................................................. 20

2.4

Regulatory ....................................................................................................................................... 20

2.5

Front Panel Controls ....................................................................................................................... 20

2.6

Special Features and Options ......................................................................................................... 21

2.7

Supplemental Specifications ........................................................................................................... 29

3 Unpacking and Installation ............................................................................................................ 34

3.1

Unpacking ....................................................................................................................................... 34

3.2

Power Requirements ....................................................................................................................... 34

3.3

Mechanical Installation .................................................................................................................... 35

3.4

AC Input Connections and Wiring ................................................................................................... 35

3.5

AC On/Off Circuit Breaker on MX Series front panel. ..................................................................... 39

3.6

Output Connections ........................................................................................................................ 41

3.7

Connectors - Rear Panel ................................................................................................................. 49

3.8

Multiple Cabinet System Configurations (incl.

–MB) ....................................................................... 56

3.9

Multiple Cabinet Power Up/Down Procedures ................................................................................ 57

3.10

Clock and Lock Configurations ....................................................................................................... 58

3.11

Basic Initial Functional Test ............................................................................................................ 61

3.12

Remote Inhibit / Remote Shutdown ................................................................................................ 63

3.13

Junction Box Accessory .................................................................................................................. 64

3.14

Output Filter Box Accessory ............................................................................................................ 65

4 Front Panel Operation .................................................................................................................. 66

4.1

Tour of the Front Panel ................................................................................................................... 66

4.2

Menu Structure ................................................................................................................................ 71

4.3

Output Programming ....................................................................................................................... 96

4.4

Waveform Management [1Pi Controller only] ................................................................................. 98

4.5

Standard Measurements ............................................................................................................... 102

4.6

Advanced Measurements [1Pi Controller only] ............................................................................. 104

4.7

Transient Programming ................................................................................................................. 105

5 Principle of Operation ................................................................................................................. 111

5.1

General ......................................................................................................................................... 111

5.2

Overall Description ........................................................................................................................ 111

5.3

Controller Assembly ...................................................................................................................... 113

5.4

System Interface Board ................................................................................................................. 116

5.5

Current / Voltage Sensor Board .................................................................................................... 116

5.6

Low Voltage Power Supply ........................................................................................................... 116

5.7

Power Module ............................................................................................................................... 117

6 Calibration ................................................................................................................................... 122

6.1

Recommended Calibration Equipment ......................................................................................... 122

6.2

Front Panel Calibration Screens ................................................................................................... 123

6.3

Routine Measurement Calibration ................................................................................................. 124

6.4

Routine Output Calibration ............................................................................................................ 126

6.5

Non-Routine Calibration ................................................................................................................ 127

7 Service ........................................................................................................................................ 130

7.1

Cleaning ........................................................................................................................................ 130

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California Instruments

7.2

General .......................................................................................................................................... 130

7.3

Basic operation .............................................................................................................................. 130

7.4

Advanced Troubleshooting. ........................................................................................................... 132

7.5

Factory Assistance ........................................................................................................................ 134

7.6

Fuses ............................................................................................................................................. 135

7.7

Firmware Updates ......................................................................................................................... 135

8 Top Assembly Replaceable Parts ............................................................................................... 138

9 Options ........................................................................................................................................ 141

9.1

Introduction .................................................................................................................................... 141

9.2

Option -HV: Additional AC Voltage Range .................................................................................... 141

9.3

Option

–160: RTCA/DO-160 Tests ................................................................................................ 142

9.4

Option

–704: MilStd704 Tests ....................................................................................................... 156

9.5

Option

–ABD: Airbus ABD0100.1.8 Test ....................................................................................... 169

9.6

Option

–787: Boeing B787-0147 Test .......................................................................................... 169

9.7

Option

–WHM: Watt Hour Measurement ....................................................................................... 170

9.8

Option

–411: IEC 61000-4-11 Voltage Dips and Interruptions ...................................................... 171

9.9

Option

–413: IEC 61000-4-13 Interharmonics Test ....................................................................... 172

9.10

Option

–SNK: Current Sink ............................................................................................................. 174

10 . Error Messages ......................................................................................................................... 177

Index .................................................................................................................................................. 182

MX15 7

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California Instruments

List of Figures

Figure 2-1: MX15-1 Voltage / Current Rating Chart for 150/300 V AC Ranges

– Max Rating. ................................................. 14

Figure 2-2: Voltage / Current Rating Chart for 150/300 V AC Ranges

– Derated. ................................................................... 14

Figure 2-3: MX15-1 Voltage / Current Rating Chart for 200/400 V DC Ranges

– Max. Rating ................................................ 15

Figure 2-4: Voltage / Current Rating Chart for 200/400 V DC Ranges

– Derated .................................................................... 16

Figure 2-5: MX15-1 Voltage / Current Rating Chart, -HV Option

– Max. Rating. ..................................................................... 24

Figure 2-6: Voltage / Current Rating Chart, -HV Option

– Derated. ......................................................................................... 24

Figure 2-7: -HF Option Voltage Frequency Rating 300V range ............................................................................................... 26

Figure 2-8: -HF Option Voltage Frequency Rating 150V range ............................................................................................... 26

Figure 2-9: MX output filter option schematic .......................................................................................................................... 31

Figure 2-10: MX45 Output Noise 10 KHz

– 1 MHz .................................................................................................................. 32

Figure 2-11: MX45 Output Noise 10 KHz - 1 MHz with optional Filter ..................................................................................... 33

Figure 3-1: The MX15 Power Source ...................................................................................................................................... 34

Figure 3-2: Location of AC Input Fuse Block and Chassis Ground Connection - Rear View, Access Panel Removed ........... 36

Figure 3-3: MX Series AC Input Connection Diagram (Rear view) .......................................................................................... 38

Figure 3-4: Rear Panel ........................................................................................................................................................... 40

Figure 3-5: External sense cable shield connection to chassis ground ................................................................................... 41

Figure 3-6: MX15-1 Output Wiring (Rear view) ....................................................................................................................... 43

Figure 3-7: MX30/2 or MX30/2-MB Output Wiring (Rear view) ................................................................................................ 44

Figure 3-8: Two MX's in Clock and Lock mode Output Wiring (Rear view) ............................................................................. 45

Figure 3-9: MX45/3 or MX45/3-MB Output Wiring (Rear view) ................................................................................................ 46

Figure 3-10: Three MX's in Clock and Lock mode - Output Wiring (Rear view) ....................................................................... 47

Figure 3-11: Ship kit Terminal Block dimensions .................................................................................................................... 48

Figure 3-12: RS232C Cable for PC Connection wiring diagram

– MX without USB. ............................................................... 53

Figure 3-13: USB Connector pin orientation. .......................................................................................................................... 54

Figure 3-14: Multi-Cabinet DIP Switch Location and Setting ................................................................................................... 56

Figure 3-15: Functional Test Setup. ........................................................................................................................................ 62

Figure 3-16: 7003-416-1 Output Junction Box ........................................................................................................................ 64

Figure 3-17: 7003-424-1 Output noise filter box. ..................................................................................................................... 65

Figure 4-1: Shuttle Knob ......................................................................................................................................................... 68

Figure 4-2: FUNCTION Keypad ............................................................................................................................................. 69

Figure 4-3: Measurement Screen ........................................................................................................................................... 70

Figure 4-4: PROGRAM Menus ............................................................................................................................................... 76

Figure 4-5: CONTROL Menus ................................................................................................................................................ 78

Figure 4-6: MEASUREMENT Screen ..................................................................................................................................... 81

Figure 4-7: Selecting a Waveform .......................................................................................................................................... 98

Figure 4-8: Custom Waveform Creation with GUI Program .................................................................................................... 99

Figure 4-9: Waveform Crest Factor Affects Max. rms Voltage .............................................................................................. 100

Figure 4-10: Pulse Transients ............................................................................................................................................... 106

Figure 4-11: List Transients .................................................................................................................................................. 107

Figure 4-12: Sample Transient Output Sequence ................................................................................................................. 108

Figure 4-13: Switching Waveforms in a Transient List .......................................................................................................... 109

Figure 4-14: TRANSIENT Menu ........................................................................................................................................... 110

Figure 5-1: MX Series Functional Block Diagram.................................................................................................................. 111

Figure 5-2: MX Series Detailed Block Diagram ..................................................................................................................... 114

Figure 5-3: Power Module Detailed Block Diagram ............................................................................................................... 115

Figure 5-4: Power Module Layout ......................................................................................................................................... 117

Figure 5-5: Amplifier Board Layout ....................................................................................................................................... 119

Figure 6-1: Calibration Setup MX45-1 (Rear view) ................................................................................................................ 123

Figure 9-1: Application Menu ................................................................................................................................................ 143

Figure 9-2: DO160 Main Menus ............................................................................................................................................ 144

Figure 9-3: Normal state screens.......................................................................................................................................... 144

Figure 9-4: Voltage Modulation - Frequency characteristics ................................................................................................. 147

Figure 9-5: Frequency Modulation ........................................................................................................................................ 148

Figure 9-6: Power Interrupt ................................................................................................................................................... 149

Figure 9-7: Power Interrupt for Group2/A(NF) and Group3/A(WF) ........................................................................................ 150

Figure 9-8: Emergency Screens ........................................................................................................................................... 152

Figure 9-9: Abnormal Screen ................................................................................................................................................ 153

Figure 9-10: Applications Menu ............................................................................................................................................ 158

Figure 9-11: MIL704 Menu .................................................................................................................................................... 158

Figure 9-12: Steady State Menu ........................................................................................................................................... 159

Figure 9-13: Emergency Menu ............................................................................................................................................. 162

Figure 9-14: Abnormal Screens ............................................................................................................................................ 163

Figure 9-15: MIL704 DC Menu.............................................................................................................................................. 165

Figure 9-16: Steady State DC .............................................................................................................................................. 165

Figure 9-17: Transient Menu ................................................................................................................................................ 166

Figure 9-18: Abnormal Test Screen ...................................................................................................................................... 167

Figure 9-19: Emergency Test ............................................................................................................................................... 168

MX15 8

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California Instruments

Figure 9-20: Watt-Hour Meter Screen ...................................................................................................................................170

Figure 9-21: WH-Meter Screen with Function Active .............................................................................................................170

Figure 9-22: APPLICATION SCREEN ..................................................................................................................................173

Figure 9-23: INTERHARMONICS SCREENS .......................................................................................................................173

Figure 9-24: REGENERATE CONTROL screen ...................................................................................................................175

List of Tables

Table 3-1: Suggested Input Wiring Sizes for each MX Cabinet * ............................................................................................ 39

Table 3-2: Suggested Output Wiring Sizes * .......................................................................................................................... 42

Table 3-3: System Interface Connectors ................................................................................................................................ 50

Table 3-4: Analog Interface Connector ................................................................................................................................... 50

Table 3-5: BNC Connectors ................................................................................................................................................... 51

Table 3-6: External Sense Connector ..................................................................................................................................... 51

Table 3-7: RS232 Connector pin out

– MX with RS232 and USB. .......................................................................................... 52

Table 3-8: RS232C Connector pin out

– MX with RS232 but no USB .................................................................................... 52

Table 3-9: USB Connector pin out. ......................................................................................................................................... 54

Table 3-10: RJ45 LAN Connector pin out. .............................................................................................................................. 55

Table 3-11: Clock and Lock Configuration settings ................................................................................................................ 58

Table 3-12: Clock and Lock Initialization settings ................................................................................................................... 59

Table 4-1: Menu Tree ............................................................................................................................................................. 75

Table 4-2: Sample Transient List ..........................................................................................................................................108

Table 6-1: Calibration Load Values .......................................................................................................................................124

Table 6-2: Measurement Calibration Table............................................................................................................................125

Table 6-3: Output Calibration Table

– MX15 Series ..............................................................................................................126

Table 6-4: Programmable Z adjustment pots ........................................................................................................................129

Table 6-5: Formulas to calculate R and L ..............................................................................................................................129

Table 7-1: Basic Symptoms ..................................................................................................................................................130

Table 7-2: MX Fuse Ratings ..................................................................................................................................................135

Table 7-3: Flash Down load Messages .................................................................................................................................137

Table 8-1: Replaceable Parts ................................................................................................................................................139

Table 8-2: Fuses ...................................................................................................................................................................140

Table 9-1: Normal Voltage and Frequency minimum ............................................................................................................145

Table 9-2: Normal Voltage and Frequency Maximum ............................................................................................................145

Table 9-3: Airbus mode voltage modulation. .........................................................................................................................146

Table 9-4: Normal VoltageSurge Sequence ..........................................................................................................................150

Table 9-5: Normal Frequency Transient Sequence ...............................................................................................................151

Table 9-6: Normal Frequency Variation Sequence ................................................................................................................151

Table 9-7: Emergency Voltage and Frequency Minimum ......................................................................................................152

Table 9-8: Emergency Voltage and Frequency Maximum .....................................................................................................152

Table 9-9: Abnormal Voltage Minimum .................................................................................................................................153

Table 9-10: Abnormal Voltage Maximum ..............................................................................................................................153

Table 9-11: Abnormal Frequency Transient ..........................................................................................................................155

Table 9-12: Steady state voltage ...........................................................................................................................................159

Table 9-13: Steady state frequency .......................................................................................................................................160

Table 9-14: Frequency Modulation ........................................................................................................................................160

Table 9-15: Abnormal Over Frequency .................................................................................................................................164

Table 9-16: Abnormal Under Frequency ...............................................................................................................................164

Table 10-1: Error Messages ..................................................................................................................................................181

MX15 9

User Manual

– Rev M

California Instruments

1 Introduction

This instruction manual contains information on the installation, operation, calibration and maintenance of all power systems that use the MX15 Series power sources with the programmable controller.

1.1 General Description

The MX15 Series AC and DC power source systems are high efficiency, floor standing AC and

DC power sources that provide a precise output with low distortion. Available voltage ranges are

150 Vac, 300 Vac and 400 Vac in AC mode and 200 Vdc and 400 Vdc in DC mode.

Models with a -1 designation provide full front panel operation but do not include certain features such as arbitrary waveform generation unless added as an option at the time of order. Models with the Pi controller offer several additional standard features, including the RS232C, USB, LAN

(option) and IEEE-488 interfaces, arbitrary waveform generation, dual voltage ranges and additional measurement functions.

The MX15 Series units are contained in a compact floor standing enclosure on casters. This allows the units to be moved around more easily.

Read the installation instructions carefully before attempting to install and operate the MX15

Series power systems.

1.2 Manual organization and format

All user documentation for AMETEK programmable power sources is provided on CDROM in electronic format. (Adobe Portable Document Format) The required Adobe PDF viewer can be downloaded free of charge from www.adobe.com

. This manual may be printed for personal use if a hardcopy is desired. To request a hardcopy from AMETEK Programmable Power, contact customer service at [email protected]

. There will be an additional charge for printed manuals.

This manual contains sections on installation, normal use, maintenance and calibration. If the MX system is equipped with a GPIB, RS232C, USB or LAN interface, refer to the MX Programming manual for information on using the remote control interfaces and command syntax. The programming manual is provided on the same CDROM as this user manual.

MX15 10

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California Instruments

2 Specifications

Specifications shown are valid over an ambient temperature range of 25

5

C and apply after a

30 minute warm-up time. Unless otherwise noted, all specifications are for sine wave output into a resistive load.

2.1 Electrical

2.1.1 Input

Parameter

Line Voltage:

(3 phase, 3 wire + ground

(PE))

Line VA:

MX15

18 KVA

MX30/2

208 V

LL

10%

230 V

LL

10%

400 V

LL

10%

480 V

LL

10%

35 KVA

MX45/3

53 KVA

Line Current: 58 A

RMS

@ 187 V

LL

52 A

RMS

@ 207 V

LL

30 A

RMS

@ 360 V

LL

25 A

RMS

@ 432 V

LL

47-63 Hz

Each MX15 chassis requires its own AC service.

Total Line currents are

2 x MX15

Line

Frequency:

Efficiency: 85 % (typical) depending on line and load

Power Factor: 0.95 (typical) / 0.99 at full power.

Inrush Current: 77A pk

@ 208 V

LL

73A pk

@ 230 V

LL

44A pk

@ 400 V

LL

37A pk

@ 480 V

LL

Hold-Up Time: > 10 ms

Each MX15 chassis requires its own AC service.

Total Peak currents are

2 x MX15

Isolation

Voltage:

2200 VAC input to output

1350 VAC input to chassis

Each MX15 chassis requires its own AC service.

Total Line currents are

3 x MX15

Each MX15 chassis requires its own AC service.

Total Peak currents are

3 x MX15

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California Instruments

2.1.2 Output

Note: All specifications are for AC and DC unless otherwise indicated.

Output Parameter MX15 MX30/2 MX45/3

Modes

Std Controller

Pi Controller

AC, DC

AC, DC, AC+DC

Voltage:

Ranges (L-N):

AC Mode

DC Mode

Low: 0 - 150 V / High: 0 - 300 V

Low: 0 - 200 V / High: 0 - 400 V

AC+DC Mode AC: Low: 0 - 150 V / High: 0 - 300 V

DC Offset: Low Vrange: 0 - 150 V

High Vrange: 0 - 220 V

Resolution:

AC Mode

DC Mode

0.1 V

0.1 V

AC+DC Mode AC:

DC Offset:

Accuracy: ± 0.3 V AC mode

± 1 V DC mode

0.1 V

0.01 V

Distortion THD

1

:

(Resistive load)

< 1 % @ 16 - 66 Hz

< 2 % @ 66 - 500 Hz

< 3 % @ > 500 Hz

Load Regulation: 0.25 % FS @ DC - 100 Hz

0.5 % FS @ > 100 Hz

Line Regulation:

DC Offset Voltage:

0.1% for 10% input line change

< 20 mV

Output Noise:

(20 kHz to 1 MHz)

Output Coupling

< 2 V

RMS

low V Range

< 3 V

RMS

high V Range

DC coupled

Except on optional -HV or -XV Voltage range output, which is AC coupled.

Power (total power for all phases, either range, at full scale voltage)

AC Mode 15 KVA 30 KVA 45 KVA

DC Mode 10 KW 20 KW 30 KW

AC+DC Mode The maximum power and current in the AC+DC mode is equal to that in the

DC mode

Current

Note: Current, maximum amps indicated per phase available between 50 and 100 % of voltage range.

1

The distortion specification for the MX Series is valid for resistive load conditions.

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Output Parameter MX15 MX30/2 MX45/3

Constant Power Mode:

Operation at higher currents but constant power is possible from 80% of Voltage range

(125% of max. current) declining to 100% of maximum current at 100 % of voltage range for short periods of time or at reduced ambient temperatures. (< 15 mins @ 30° C). See

Figure 2-2 and Figure 2-4.

AC Mode

DC Mode

AC+DC Mode

MX15-1

V Lo: 100 A

V Hi: 50 A

MX15-1

V Lo: 50 A

V Hi: 25 A

MX30/2-1

V Lo: 200 A

V Hi: 100 A

MX30/2-1

V Lo: 100 A

V Hi: 50 A

MX45/3-1

V Lo: 300 A

V Hi: 150 A

MX45/3-1

V Lo: 150 A

V Hi: 75 A

Note: Current derates linearly from 50% of voltage range to 20% of specified current at 5% of voltage range

Current Limit mode Programmable, CC or CV mode

Repetitive Peak Current

AC Mode MX15-1

V Lo: 300 A

V Hi: 150 A

Frequency

Range:

Resolution:

Accuracy:

Ext. Sync Mode

Standard:

-LF option:

-HF option:

0.01 Hz

0.1 Hz

1 Hz

± 0.01 %

MX30/2-1

V Lo: 600 A

V Hi: 300 A

16 Hz - 819.0 Hz

16 Hz - 500.0 Hz

16 Hz

– 900 Hz from 16.00 to 81.91 Hz from 82.0 to 819.0 Hz from 819 to 900 Hz

MX45/3-1

V Lo: 900 A

V Hi: 450 A

Input: Isolated TTL input for external frequency control. Requires 5V at 5 mA for logic high.

Accuracy: Ext. Sync to phase A with fixed Ext. Sync Frequency input:

16 Hz - 100 Hz: < 2°

100 Hz - 500 Hz: < 3°

> 500 Hz: < 4°

Programmable Output Impedance

Range: R: 1

– 200 mOhm

L: 15

– 200 uH

N/A

Resolution: N/A

Accuracy:

R: 1 mOhm

L: 1 uH

10 % FS N/A

N/A

N/A

N/A

Note: Output specifications apply below the Current / Voltage rating lines shown in the

V/I rating chart below.

MX15 13

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100 A

Current

(RMS)

100

80

60

40

20

Low V Range

50 A

High V Range

7.5 15

75 150

Voltage (RMS)

300

Figure 2-1: MX15-1 Voltage / Current Rating Chart for 150/300 V AC Ranges

– Max Rating.

MX15

Figure 2-2: Voltage / Current Rating Chart for 150/300 V AC Ranges

– Derated.

14

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California Instruments

50 A

50

Current

(DC)

40

30

Low V Range

25 A

20

High V Range

10

20 40

100 200 400

Voltage (DC)

Figure 2-3: MX15-1 Voltage / Current Rating Chart for 200/400 V DC Ranges

– Max. Rating

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62.5 A

60

50

Current

(DC)

40

30

Full

Pow er

31 A

25 A

20

10

Full

Pow er

0

20 40 100 150 200 300 400

Voltage (DC)

Figure 2-4: Voltage / Current Rating Chart for 200/400 V DC Ranges

– Derated

2.1.3 AC Measurements

Measurement specifications apply to MX15-1 / MX15-1Pi. See notes for other models and configurations.

Parameter Range Accuracy (

) Resolution

Frequency

RMS Voltage

16.00 - 820.0 Hz 0.01% + 0.01 Hz

0 - 400 Volts

0.01 to 81.91 Hz

0.1 to 500 Hz

0.01 Volt

RMS Current 0 - 150 Amps

0.05V + 0.02%, <100 Hz

0. 1V + 0.02%, 100-820 Hz

0.15A + 0.02%, <100 Hz

0. 3A + 0.02%, 100-820 Hz

0.01 Amp

Peak Current

VA Power

0 - 400 Amps

0 - 15 KVA

0.15A + 0.02%, <100 Hz

0. 3A + 0.02%, 100-820 Hz

30 VA + 0.1%, <100 Hz

60 VA + 0.1%, 100-820 Hz

0.01 Amp

10 VA

Real Power

Power Factor

(>0.2kVA)

0 - 15 KW

0.00 - 1.00

30 W + 0.1%, <100 Hz

60 W + 0.1%, 100-820 Hz

0.01, <100 Hz

0.02, 100-820 Hz

10 W

0.01

Note: Accuracy specifications are valid above 100 counts. For current and power measurements, specifications apply from 2% to 100% of measurement range.

Note: Power factor accuracy applies for PF > 0.5 and VA > 50 % of max.

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2.1.4 DC Measurements

Parameter Range Accuracy (

) Resolution

Voltage

Current

Power

0 - 400 Volts

0 - 400 Amps

0 - 10 kW

0.5 Volts

0.5 Amps

30 W

0.1 Volt

0.01 Amp

10 W

Note: Accuracy specifications are valid above 100 counts. For current and power measurements, specifications apply from 2% to 100% of measurement range.

2.1.5 Harmonic Measurements (Pi controller)

Parameter Range

Frequency fundamental 16.00 - 820 Hz

Frequency harmonics 32.00 Hz

– 16 KHz

Phase

Voltage

0.0 - 360.0°

Fundamental

Harmonic 2 - 50

Accuracy (

)

0.03% + 0.03 Hz

0.03% + 0.03 Hz

Resolution

0.01 Hz

0.01 Hz

2° typ.

0.75V

0.5°

0.01V

0.75V + 0.3% + 0.3%/kHz 0.01V

Current Fundamental

Harmonic 2 - 50

0.5A

0.15A + 0.3% + 0.3%/kHz

0.1A

0.1A

Note: Accuracy specifications are valid above 100 counts. For current and power measurements, specifications apply from 2% to 100% of measurement range.

2.1.6 System Specification

Parameter Specification

External Modulation: 0 to 10%

Synchronization

Input:

Isolated TTL input for external frequency control. Requires 5V at 5 mA for logic high.

Trigger Input:

Trigger Output:

Function Strobe:

Output Status:

External trigger source input. Requires TTL level input signal. Triggers on negative edge. Response time 80 - 100

 s.

Programmable through transient list system. 400

 s pulse for voltage or frequency change. Isolated TTL output. Output reverts to Function strobe when not used as Trig Out. This function is mutually exclusive with the

Function Strobe output.

Active for any voltage or frequency program change. 400

 s pulse for voltage or frequency change. Isolated TTL output. This function is mutually exclusive with the Trigger Output. Same output is used for Trigger Output if Trigger

Output is programmed as part of list system.

Monitors status of output relay. Isolated TTL output. High if output relay is closed, low if output relay is open.

Non volatile memory storage:

Waveforms

16 complete instrument setups and transient lists, 100 events per list.

Transients

Sine (Models with Standard controller)

Sine, square, clipped, user defined (Models with Pi controller)

Voltage: drop, step, sag, surge, sweep

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Parameter Specification

Frequency: step, sag, surge, sweep

Voltage and Frequency: step, sweep

IEEE-488 Interface: SH1, AH1, T6, L3, SR1, RL2, DC1, DT1

IEEE 488.2 and SCPI

Response time is 10 ms (typical)

RS232C Interface:

USB Interface:

LAN Interface:

Bi-directional serial interface

9 pin D-shell connector

Handshake: CTS, RTS

Data bits:

Stop bits:

Baud rate:

7, 8

1,2

9600 to 115,200 bps

Syntax: IEEE 488.2 and SCPI

Standard USB 2.0 peripheral.

Data transfer rate: 460,800 bps

Syntax: IEEE 488.2 and SCP.

Note: Use of the USB port to control more than one power source from a single PC is not recommended, as communication may not be reliable. Use GPIB interface for multiple power source control.

Note: Not available on older MX15 models.

Option

–LAN. When the LAN interface is installed, the RS232 interface is disabled.

RJ45 Connector, 10BaseT, 100BaseT or 1000BaseT,

Data transfer rate: 460,800 bps

Protocol: TCP/IP.

Syntax: IEEE 488.2 and SCP

Note: Disconnect any USB connection when using the LAN interface.

Current Limit Modes: Two selectable modes of operation:

1. Constant current mode (voltage folds back with automatic recovery)

2. Constant voltage mode with trip-off (Relays open).

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2.1.7 Unit Protection

Input Over current:

Input Over voltage:

Input Over voltage

Transients:

Output Over current:

Output Short Circuit:

Over temperature:

2.2 Mechanical

Parameter

Dimensions:

(for each MX chassis)

In-line fast acting fuses. Check fuse rating in Service and Maintenance section. Ratings will depend on AC input configuration settings.

Circuit breaker for LV supply.

Automatic shutdown.

Surge protection to withstand EN50082-1 (IEC 801-4, 5) levels.

Adjustable level constant current mode with programmable set point.

Peak and RMS current limit.

Automatic shutdown.

Unit Weight:

(for each MX chassis)

Material:

Finish:

Cooling:

Internal Construction:

Rear Panel

Connections:

Specification

Height:

Width:

Depth:

Net:

Shipping:

31.75”

24”

28”

806 mm

610 mm

711 mm

600 lbs / 272 Kg approximately

681 lbs / 309 Kg approximately

Steel chassis with aluminum panels and covers.

Light textured painted external surfaces.

Panels semi-gloss polyurethane color no. 26440 (medium gray)

Fan cooled with air intake on the front and exhaust to the rear.

Fans: 2 x 225CFM.

Air displacement 7.5 Cu Ft/sec. Max.

Modular sub assemblies.

(See section 3 for description of connections)

Cable entry and strain relieve for AC input wiring

Cable entry and strain relieve for output wiring

External sense terminal block (Remote voltage sense)

System interface (2x)

Clock and Lock BNC's (requires -LKM or -LKS options)

RS232, USB, GPIB, LAN (option)

Trigger In BNC

Trigger Out BNC

Function Strobe BNC

Output Status

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2.3 Environmental

Parameter

Operating Temp:

Storage Temp:

Altitude:

Relative Humidity:

Installation/Over voltage

Category:

Pollution Degree:

Indoor Use Only

Vibration:

Shock:

2.4 Regulatory

Specification

0° to +40

C. (Except in CP mode).

+32° to +104° F.

-40° to +85

C.

-40° to +185° F.

< 2000 meters

0-95 % RAH, non-condensing maximum for temperatures up to 31

C decreasing linearly to 50% at 40

C.



2

Designed to meet NSTA 1A transportation levels.

Designed to meet NSTA 1A transportation levels.

Electromagnetic

Emissions and Immunity:

Acoustic Noise:

Safety:

Designed to meet EN50081-2 and EN50082-2 European Emissions and

Immunity standards as required for the “CE” mark.

56 dBA maximum at 0% to 50% load, 68 dBA maximum greater than

50% load to 100% load. Measured at one meter.

Designed to EN 61010-1 European safety standards as required for the

“CE” mark.

2.5 Front Panel Controls

Controls:

Shuttle knob:

Decimal keypad:

Up/down arrow keys:

Function keys:

Allows continuous change of all values including output calibration and range change.

A conventional decimal keypad facilitates quick entry of numerical values such as voltage, current limit, etc. The large blue enter key will make the value you enter effective. Using the SET key allows the user to preset all parameter values and update them all at once by pressing the Enter key.

A set of up and down arrow keys is used to move the cursor position in all menus. This allows quick selection of the desired function or parameter.

Measure key will display most measurement values. Program key will show all program parameters. Output on/off key for output relay control.

Phase key will switch display to show program and measured values for each phase (not used on MX15).

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Displays:

LCD display:

Status indicators:

A two-line LCD display with backlight provides easy to read guidance through all setup operations. An adjustable viewing angle makes it easy to read from all practical locations.

Bright status indicators inform the user of important power source conditions. The Remote lamp informs the user that the unit is under remote control. The Overload lamp indicates that excessive current is being drawn at the output. The Over temperature lamp illuminates when internal heat sink temperatures are too high. The Hi Range indicator is lit any time the unit is switched to the high voltage range. The Output

On/Off indicator is on when the power source output relays are closed.

2.6 Special Features and Options

Controller Features

Mode:

Parallel Operation:

Clock and Lock Mode:

(Option -LKM and -LKS required).

Controller:

Output Relay:

Output On/Off:

This option is not available for the MX15.

Up to three units can be paralleled in a single-phase configuration (with one master controller and one or two auxiliary units). (MX30/2 and

MX45/3). Only the master unit requires a controller in this setup. The auxiliary units are controlled through the system interface.

Up to three units (all with controllers) can be connected in a one, two, or three-phase configuration using CLOCK and LOCK connections. Each unit requires its own controller in this configuration. One unit acts as the master and provides the reference clock to the auxiliary units.

Programmable controller front panel assembly.

Standard output relay feature to isolate power source from the load.

The output relay can be used to quickly disconnect the load. An amber status indicator displays the status of the output relay.

Firmware Options

- 704

- 160

-411

-413

787

-ABD

Mil Std 704D & E test firmware.

Mil Std 704A, B, C, & F test software (refer to Avionics Software Manual

P/N 4994-971 for details).

Note: Requires use of MXGui Windows application software provided on

CD ROM CIC496.

RTCA/DO-160D test firmware

RTCA/DO-160E test software (refer to Avionics Software Manual P/N

4994-971 for details)..

Note: Requires use of MXGui Windows application software provided on

CD ROM CIC496.

IEC 61000-4-11 Voltage Dips and Interruptions Test firmware. Supported over remote control interface only.

IEC 61000-4-13 Interharmonics Test Firmware. Supported over remote control interface only.

Boeing 787 Test software (refer to Avionics Software Manual P/N 4994-

971 for details)..

Note: Requires use of MXGui Windows application software provided on

CD ROM CIC496.

Airbus ABD0100.1.8 Test software (refer to Avionics Software Manual

P/N 4994-971 for details).

Note: Requires use of MXGui Windows application software provided on

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-WHM

CD ROM CIC496.

Watt Hour Measurements (Accuracy and Resolution. See Sec. 2.6.5.)

Output Voltage Range Options

- HV

- XV

Adds 400 V AC only output range.

Adds customer specified AC only output range. Contact factory for details.

Misc. Options

-ES

-MB

Emergency Shut off switch. This option key lock push button is installed on the front panel of the master MX if ordered with the MX system. When pushed in, the main AC contactor is opened disconnecting the AC input power to the MX input transformer. Note that the controller (and LCD display) will still be powered up but no power is available to the amplifiers and there will be no output power either. The controller runs off the LV supply, which must be turned off with the front panel breaker.

After the ES has been pushed, the provided key will be required to release it. Once the ES button has been released, the MX

must

be powered down using the front panel circuit breaker and turned back on to start up again.

Note: Do not misplace the 2 keys provided, as no duplicates are available from CI. If lost, the ES switch must be replaced. In that case, contact AMETEK Programmable Power customer service.

( [email protected]

).

Multi-box Option. Provides additional controllers in Auxiliary units of multi-cabinet configurations (MX30/2, MX45/3) to allow individual MX15 units to be used stand-alone.

-LF

-HF

Limits maximum output frequency to 500 Hz.

Increases maximum output frequency to 900 Hz.

External Accessories (External to MX chassis)

7003-416-1

7003-424-1

Input / Output wiring junction box.

Connects two to six three-phase

MX45 cabinet outputs, neutral and ground to a common output terminal block housed in a metal enclosure junction box. Can also be used to connect multiple MX chassis to common AC input

service. See section 3.13 for details.

Output noise filter, 3 phase + neutral. May be used to reduce output noise of MX15 when testing EUT’s for conducted emissions. This is an external filter that attenuates the 250 KHz ripple frequency on the MX output by > 20 dB. The filter is rated for 125A per phase and 800 Hz.

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2.6.1 -HV Option Specifications

The -HV option provides an AC only output range of 0 to 400 Vac L-N. Specifications unique to the -HV option are shown in the table below.

Output Parameter MX15 MX30/2

MX45/3

Modes

Pi Controller AC

Voltage:

Ranges (L-N):

Resolution:

Accuracy:

0 -400 V

0.1 V

± 0.4 V

Output Coupling AC coupled

Power (total power for all phases, either range, at full scale voltage)

AC Mode

Current

15 KVA 30 KVA 45 KVA

Note: Current, maximum amps per phase available between 50 and 100 % of voltage range.

MX15-1

37.5 A

MX15-1

75 A

MX15-1

112.5 A

Peak Current

AC Mode MX15-1

112.5 A

MX15-1

225 A

MX15-1

337.5 A

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Note: Output specifications apply below the Current / Voltage rating lines shown in the

V/I rating chart below.

Current

(RMS)

37.5

37.5 A

-HV Range

20 100 200 300 400

Voltage (RMS)

Figure 2-5: MX15-1 Voltage / Current Rating Chart, -HV Option

– Max. Rating.

Figure 2-6: Voltage / Current Rating Chart, -HV Option

– Derated.

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2.6.2 -XV Option Specifications

Consult factory for -XV option specifications.

2.6.3 -HF Option Specifications

The -HF option extends the maximum available output frequency from 819 Hz to 900 Hz. Some restrictions are in effect at this increased output frequency level.

All other specifications of the MX15 system remain unchanged if this option is installed except as noted in the table below.

-HF Option:

Frequency

Range:

Resolution:

-HF option:

0.01 Hz

0.1 Hz

1 Hz

± 0.01 %

16 Hz - 900 Hz

< from 16.00 to 81.92 Hz

> from 82.0 to 819.2 Hz

> from 820 to 900 Hz

Accuracy:

Phase

Accuracy: 16 - 100 Hz:

100 - 500 Hz:

500

– 819 Hz:

819

– 900 Hz:

< 1.5°

< 2°

< 4°

< 5°

Voltage

High Voltage Range

Low Voltage Range

-HV Voltage Range

Maximum voltage at 900 Hz is 290 Vrms

Maximum frequency at 300 Vrms is 875 Hz

See Figure 2-7

Maximum voltage at 900 Hz is 145 Vrms

Maximum frequency at 150 Vrms is 875 Hz

See Figure 2-8.

Maximum voltage at 900 Hz is 386 Vrms

Maximum frequency at 400 Vrms is 875 Hz .

Note: If the voltage or frequency settings shown here are exceeded for any length of time (> 1 sec), the MX may shut down generating an over temperature fault to protect itself.

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Figure 2-7: -HF Option Voltage Frequency Rating 300V range

MX15

Figure 2-8: -HF Option Voltage Frequency Rating 150V range

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2.6.4 -LF Option Specifications

The -LF option limits the maximum available output frequency to 500 Hz. All other specifications of the MX15 system remain unchanged if this option is installed.

2.6.5 WHM Option Specifications

Watt-hour measurement mode:

Accuracy:

0-6.000KW

Resolution:

>6.000KW

0.01 KWH

0.01KWH + 0.1% <100 Hz

0.02KWH +0.1% 100-819 Hz

Times three of the above specification

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2.6.6 SNK Option Specifications

The

–SNK or current sink option enables the MX power source to sink current from the unit under test. This mode of operation is particularly useful when testing grid-tied products that feed energy back onto the grid. The ability of the MX to simulate the grid provides unique opportunities to test the EUT for compatibility to commonly occurring line anomalies like voltage and/or frequency fluctuations. Examples of these types of EUT are inverters (PV Solar, Wind) hybrid drive systems, regenerative breaks.

The SNK option requires special amplifiers that have a different control loop from the standard

MX amplifiers. In the AC mode the upper frequency limit of an MX configured with the

–SNK option is 500Hz as opposed to the standard 819Hz. Also, the voltage distortion levels are slightly higher than on MX units without this option.

-SNK Option: The following specifications apply to the AC mode unless specified otherwise

Frequency

Range:

Resolution:

-HF option:

0.01 Hz

0.1 Hz

± 0.01 %

16 Hz - 500 Hz

< from 16.00 to 81.92 Hz

> from 82.0 to 500.0 Hz

Accuracy:

Phase

Accuracy: 16 - 100 Hz:

100 - 500 Hz:

< 1.5°

< 2°

Voltage

Distortion THD

1

:

(Resistive full load)

Power

Measurements

Power

< 1 % @ 16 - 66 Hz

< 2 % @ 66 - 500 Hz

Capability (AC & DC) Full power can be returned into MX as long as current does not exceed maximum current limit setting for selected range. See REGENERATE

CONTROL screen for protection settings in REGEN mode.

Without

–SNK option

MX units without the SNK will generate a warning message (Error 31) if more than 20% of available power (per phase) is regenerated by the load.

It will shut off (Error 32) if the negative power reaches 30% of available power.

Programmable Output Impedance (available on MX15-1Pi, MX30-30Pi and MX45-3Pi only)

Auto-disabled Programmable impedance is turned off as soon as a regenerative load is detected. Once turned off, it will remain off until programmed by user again. This is required as programmable impedance is based on delivering current which is not the case when driving a regenerative load.

Regenerated power is displayed with a negative sign to indicate direction of power flow.

All other specifications of the MX system remain unchanged if this option is installed.

1

The distortion specification for the MX Series is valid for pure (inductance < 12 uH) resistive load conditions and using a 30 KHz LP filter on distortion meter.

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2.7 Supplemental Specifications

Supplemental specifications are not warranted and generally reflect typical performance characteristics. These characteristics are have been checked on a type test basis only and are not verified on each unit shipped. They are provided for reference only.

2.7.1 Output

Output Parameter

Voltage:

Slew rate:

Stability:

Settling time:

Frequency:

Temperature coefficient:

Stability:

Current:

Constant Power

Mode:

MX15

> 0.5 V/micro sec

0.25 % over 24 hour period at constant line, load and temperature.

< 0.5 msec

5ppm per degree C

15 ppm per year

MX30/2 MX45/3

2.7.2 Acoustic Noise Levels

Operation at higher currents but constant power is possible from 80% of

Voltage range (125% of max. current) declining to 100% of maximum current at 100 % of voltage range for short periods of time or at reduced ambient

temperatures. (< 15 mins @ 30° C). See Figure 2-2 and Figure 2-4.

Acoustic Noise:

Front

Back

Measured at a distance of one meter. (3 ft.)

53 dBA at no load to 65 dBA at full load.

55 dBA at no load to 67 dBA at full load

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2.7.3 Output Noise Spectrum

The MX series is a switching power supply and as such will have a certain amount of switching noise at its output. While the overall RMS noise is specified, the specific noise spectrum will differ slightly from unit to unit. The information provided in this section is for reference only.

The output noise can be reduced by using one or more external filters. A suitable filter is the P/N

7003-424-1 (Figure 2-9) available from AMETEK as an option. Attenuation at the 250 kHz ripple

frequency is 20 dBuV. The output voltage drop at 800 Hz full load is less than 1Vrms.

Typical output noise spectrum for a standard MX45-3Pi in three phase mode operating at 400 Hz

is shown in Figure 2-10 for phase A and Neutral. The same output with the use of the optional

filter is shown in Figure 2-11. For connection information, refer to section 3.14. The MX15 and

MX45 use the same amplifier so results will be similar.

MX Filter Specifications

(Model 7003-424-1)

Type

Low Pass Filter

Capability

Frequency range

Max Voltage

Phase Current

Impedance

Performance

Attenuation

Physical

Enclosures type

Dimensions (W x D x H)

Weight

Operating Temp:

Three phase WYE, four wire. (A, B, C and Neutral)

DC, 16 Hz - 800 Hz

250 Vrms Line to Neutral / 440 Vrms L-L

125 Arms per phase maximum.

Voltage drop at 800 Hz, 125 A is less than 1 Vrms.

20 dBuV at 250 KHz.

Cooper B-Line P/N 16126 SC NK

Unit:

Shipping:

Net:

Shipping:

16” x 12” x 6” / 406 mm x 305 mm x 152 mm

30” x 25” x 11” / 760 mm x 635 mm x 280 mm

28 lbs / 12.7 Kg

40 lbs / 18.2 Kg

0° to +40

C. / +32° to +104° F.

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Figure 2-9: MX output filter option schematic

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MX15

Figure 2-10: MX45 Output Noise 10 KHz

– 1 MHz

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Figure 2-11: MX45 Output Noise 10 KHz - 1 MHz with optional Filter

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3 Unpacking and Installation

3.1 Unpacking

Inspect the unit for any possible shipping damage immediately upon receipt. If damage is evident, notify the carrier. DO NOT return an instrument to the factory without prior approval. Do not destroy the packing container until the unit has been inspected for damage in shipment. If possible, retain the container (wooden crate) in the event the system ever has to be returned to the factory for either repair or upgrades

WARNING: This power source weighs approximately 600 lbs / 272

Kg

. Obtain

adequate help when moving the unit. Make sure the location (floor) in which the MX

Series unit(s) will be installed can support the weight of the unit(s).

3.2 Power Requirements

The MX Series power Source has been designed to operate from a three-phase, three wire (Wye or Delta) AC input line. A protective earth connection is required as well. (PE).

Available three-phase input settings are 208 V

LL

(option -208), 230 V

LL

(option -230), 400 V

LL

(option -400), 440 V

LL

(option -440), or 480 V

LL

(option -480).

Figure 3-1: The MX15 Power Source

MX15

CAUTION: Do not connect 400, 440, or 480V into a unit set for 208 or 230V unit, the result could be a severely damaged unit. Always check the input rating on the model number tag before connecting AC input power. Consult factory if input settings have to be changed.

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3.3 Mechanical Installation

The MX's are completely self-contained power sources. They are to be used free standing on a solid surface. The units are fan cooled, drawing air in from the front and exhausting at the rear.

The front and back of each uni t must be kept clear of obstruction and a 6” clearance must be maintained to the rear. Special consideration of overall airflow characteristics and the resultant internal heat rise must be considered at all times to avoid self heating and over temperature problems.

3.4 AC Input Connections and Wiring

Three-phase Delta or Y AC input voltage of sufficient amperage (consult AC input specifications for maximum AC current per phase) is required to power the MX Series.

Note: AC power should be routed through a properly sized and rated three-phase

PROTECTIVE CIRCUIT BREAKER or similar branch circuit protection device with disconnect capability. This will protect building wiring and other circuits from possible damage or shutdown in case of a system problem. It will also facilitate removing AC input power to the MX system in case of service or reconfiguration requirements.

Note: AC input wiring and connections must conform to local electrical safety codes that apply. Always consult a qualified electrician prior to installation of any MX

System.

AC input connections are to be made directly to the input fuse block. The input fuse block is located on the lower right hand corner of the back of the MX15 chassis. To access the input fuse connection block, the protective rear cover needs to be removed first.

CAUTION: Always disconnect any input power completely when removing any protective cover and allow the internal capacitors to fully discharge

(minimum of 15 mins) before removing any cover. See Figure 3-2 for details.

No wiring for AC input connections is provided with the MX Series and must be provided by the end user or installer. Input wiring should be entered through the right hand side (when facing the

back of the MX cabinet, see Figure 3-4) wire access opening located at the rear bottom of the

MX15 chassis.

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Figure 3-2: Location of AC Input Fuse Block and Chassis Ground Connection -

Rear View, Access Panel Removed

Note: To comply with product safety requirements, EARTH GROUND must be connected to the chassis of the AC power system using the ground stud located directly below the inrush resistors. Use a Green/Yellow ground wire.

Note: DO NOT USE THE NEUTRAL CONNECTION OF A 3 PHASE Y AC POWER

CONNECTION IN PLACE OF A TRUE EARTH GROUND CONNECTION. AC power system neutrals cannot be used for protective earth ground.

The mains source must have a current rating equal to or greater than the input fuses and the input wiring must be sized to satisfy the applicable electrical codes. The rear cover must be reinstalled prior to use and the strain relief provisions located at the rear bottom of the unit must be used to maintain protection against hazardous conditions.

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MX15

Figure 3-3: MX Series AC Input Connection Diagram (Rear view)

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The input power cables and protective circuit breaker used must be large enough to handle the input current and input voltage of the power source and must conform to local electrical codes.

Consult a qualified electrician prior to installation. Table 3-1 shows the size of the cables that

may be used per MX15 cabinet. Note that wires must be sized to accommodate the worst-case maximum current that may occur under low line conditions. Local electrical codes may also require different wire types and sizes. These ratings should also be used when selecting a circuit breaker or equivalent disconnect device.

Cable lengths must not exceed twenty-five (25) feet. For lengths greater than 25 feet, calculate the voltage drop from the following formula:

2 X DISTANCE X CABLE RESISTANCE PER FT. X CURRENT = VOLT DROP

Table 3-1: Suggested Input Wiring Sizes for each MX Cabinet *

Nominal Line

Voltage

Load Current

@ low line

Wire Gauge (US) Circular Mils

(Kcmils)

Metric (mm2)

480 V

400 V

230 V

208 V

25 Arms

30 Arms

52 Arms

58 Arms

8 AWG

8AWG

8 AWG

6 AWG

11.50

11.50

18.00

26.24

5.8

5.8

9.1

13.3

* Using high temperature rated wire. Always consult the National Electrical Code and/or local code regulations for proper rating and size of wire cabling prior to installation.

CAUTION: Capacitors in the power source may hold a hazardous electrical charge even if the power source has been disconnected from the mains supply. Allow capacitors to discharge to a safe voltage before touching exposed pins of mains supply connectors.

Power modules need at least 15 Minutes to discharge to safe levels before they can be removed.

3.5 AC On/Off Circuit Breaker on MX Series front panel.

It is important to understand the purpose and operation of the On/Off circuit breaker of the MX15 located on the left side of the front panel. This is a 2A rated breaker that is used to engage and protect the LV Power supply of the MX15 chassis only. The LV Power supply provides DC bias power to the entire MX15 system. The AC input power is routed through a set of three AC line

fuses (F1, F2 and F3) located in the lower right bottom corner of the MX15. (See Figure 3-2 for

fuse locations). These fuses protect the MX amplifier and the AC input transformer from excessive input currents. The AC input power is connected to the input transformer through a large three-pole contactor. Removing AC power to the LV Power Supply by opening the front panel circuit breaker (moving the lever to the down (OFF) position) will cause this contactor to loose its coil voltage and will result in it opening and disconnecting the input transformer and amplifier from AC mains input.

Note: If any MX15 system failure has occurred on any part of the MX15 system, AC input power must be removed immediately and not restored until the system has been inspected by a qualifier service technician.

Always turn off the On/Off Circuit breaker before re-applying AC input power.

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CAUTION: The AC input fuses can only be checked if the MX unit is completely de-energized and disconnected from any AC power input.

Note: Under no circumstances should AC input power be applied if one or more of the

AC input line fuses have failed and opened up.

MX15

Figure 3-4: Rear Panel

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3.6 Output Connections

3.6.1 Output Wiring

The output terminal block, TB1, is located at the back of the unit behind the bottom access panel.

See Figure 3-2 for details.

Single phase output line connections are made to terminal block TB1. The outputs are labeled HI and LO.

The external sense inputs allow the power system output voltages to be monitored directly at the load and must be connected at TB2 when the sense is programmed for external. The external sense input does not have to be connected when Internal Sense is programmed. The external sense wires are to be connected to TB2 on the rear panel and should be run using a twisted

shielded cable. See Figure 3-4 for location of TB2 and Figure 3-5 for shield connection detail.

Note: For External Sense connection, a shielded cable MUST be used with the shield connected to chassis ground at the Ext. Sense connector. (See Figure 3-5).

External sense is recommended for multi-cabinet systems where the output wiring from the cabinets to the common output terminal block supplied is not of equal length.

Shield

Connection

MX15

Figure 3-5: External sense cable shield connection to chassis ground

Note: The output of the power source is isolated from the input line and floating with respect to chassis ground. If needed, either side (HI or LO) may be grounded.

If the EUT changes frequently, you may want to consider using some quick disconnect scheme external to the MX15 so it will not be necessary to power down the MX15 and remove the front covers. This can take the form of a panel-mounted socket of sufficient current and voltage rating. (Not supplied with MX15)

The output power cables must be large enough to prevent a total voltage drop exceeding 1% of the rated output voltage between the power source and the load. Table 3-2 shows the size of the cables that may be used. Note that wires must be sized to accommodate the maximum current that is available. Size the wires for the lowest available voltage range as the currents will be highest in that range.

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Cable lengths must not exceed twenty-five (25) feet. For lengths greater than 25 feet, calculate the voltage drop from the following formula:

2 X DISTANCE X CABLE RESISTANCE PER FT. X CURRENT = VOLT DROP

Load Current

65 AMPS

130 AMPS

Table 3-2: Suggested Output Wiring Sizes *

Wire Gauge (US)

6 AWG

4 AWG

Circular Mils

(kcmils)

26.24

41.74

Metric (mm2)

13.3

21.1

Note: Use high temperature rated wire. Always consult the National Electrical Code and/or local code regulations for proper rating and size of wire cabling prior to installation.

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Output Terminal Blocks

The MX15-1 and the MX15-1Pi have one output terminal block. The terminal block is large

enough to accommodate the recommended wire gauge sizes shown in Table 3-2. The terminal

block is located in the lower left corner on the rear of the unit. The rear panel needs to be removed to access this terminal block.

CAUTION: REMOVE ALL INPUT POWER TO THE MX15 BEFORE

REMOVING THE REAR PANEL.

The correct standard size Allen wrench for connecting output wiring to TB1 is supplied with each

MX15 in the ship kit. Look for a brown envelope. If the correct tools cannot be found, contact

AMETEK Programmable Power customer service at [email protected]

.

Terminal 2 of TB1 provides the output LO connection, and terminal 1 of TB1 provides the output

HI connection. The location of TB1 is shown in Figure 3-2.

3.6.2 MX15-1, MX15-1Pi Output Wiring Diagram

Figure 3-6 shows the required output connections for a MX15-1 and MX15-1Pi (rear-view

perspective).

Always disconnect all input power from the MX before removing the rear panel cover that provides access to the input and output terminal connections.

MX15

Figure 3-6: MX15-1 Output Wiring (Rear view)

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3.6.3 MX30/2 Output Wiring Diagram

Figure 3-7 shows the required output connections for an MX30/2-1 single-phase output configuration (rear-view perspective). Always

disconnect all input power from the MX30/2 before removing the rear panel cover that provides access to the input and output terminal connections. MX30/2 systems are shipped with external output terminal blocks that enable the output wiring from two or three chassis to be combined, providing a single point of connection to the EUT. These blocks are not enclosed however.

MX15

Figure 3-7: MX30/2 or MX30/2-MB Output Wiring (Rear view)

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MX15

Figure 3-8: Two MX's in Clock and Lock mode Output Wiring (Rear view)

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MX135 Output Wiring Diagram

Figure 3-9 shows the required output connections for an MX45/3-1Pi or MX45/3-1Pi-MB single-phase output configuration (rear-view

perspective). Always disconnect all input power from the MX45/3 before removing the rear panel cover that provides access to the input and output terminal connections. Note that the master is shown in the center in this drawing. MX45/3 systems are shipped with external output terminal blocks that enable the output wiring from two or three chassis to be combined, providing a single point of connection to the

EUT. These blocks are not enclosed however.

MX15

Figure 3-9: MX45/3 or MX45/3-MB Output Wiring (Rear view)

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MX15

Figure 3-10: Three MX's in Clock and Lock mode - Output Wiring (Rear view)

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3.6.4 Multi-Chassis Output Connections

If two or more MX15 chassis are used to form a single power system, the outputs of all chassis need to be combined (paralleled). This can be done directly at the EUT if convenient or using the provided heavy-duty terminal block. One 2-position block is provided. This block allows up to four wires to be combined into one larger wire gauge size wire. The outputs of the 2 or 3 MX15 chassis are connected on one side of these blocks. The EUT can be connected to the other side.

Note that the wire size to the EUT should be sized up to accommodate the double or triple currents per phase.

The dimensions of the supplied terminal block are shown in Figure 3-11.

MX15

Figure 3-11: Ship kit Terminal Block dimensions

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3.7 Connectors - Rear Panel

A number of connectors are located along the top rear covers. These connectors are in a recessed area to protect them from shipment damage.

3.7.1 System Interface

WARNING: The system interface connectors are for use with AMETEK supplied cables, and only between California Instruments equipment.

The Clock and Lock BNC connectors located on the rear panel are used to synchronize and control the phase shift between the three outputs when 3 units are operating as a three-phase clock and lock system. This mode of operation requires the -LKM (on Master unit) and -LKS (on

Auxiliary units) options. See paragraph 3.10 for more information on this mode of operation.

A set of two identical System Interface connectors, P8 and P9 is located on the rear panel of each MX15 chassis. The system interface is used to connect the multiple MX15 power sources in a Master/Auxiliary configuration to create MX30/2 or MX45/3 models. In these configurations, only the Master MX15 power source has a built-in controller and front panel.

The same connector is also used to control the optional OMNI-3-75 Reference Impedance.

P8 / P9

15

16

17

18

19

20

10

11

12

13

14

5

6

7

8

9

1

2

3

4

Description

OUTP:

N/C

N/C

N/C

COM:

OT:

N/C

CLB:

CSA:

Output ON. Controls state of output relay

Common. Signal return.

Over temperature. Indicates over temperature condition.

Current Limit B. (Not Used)

Current Sum Phase A

CSC:

FLT A:

FLT C:

Current Sum Phase C (Not Used)

Amplifier Fault Phase A

Amplifier Fault Phase C (Not Used)

XFMR: Optional voltage range select. (-HV or -XV option)

PARALLEL: Parallel operation control. (Not Used)

INPUT ON: Input power status

A ERR LO: Error Signal Phase A, low

B ERR HI: Error Signal Phase B, high (Not Used)

N/C

C ERR LO: Error Signal Phase C, Low (Not Used)

300 VRNG: 300 V AC Range Select

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P8 / P9

21

22

23

24

25

26

27

32

33

34

35

36

37

28

29

30

31

Description

COM: Common. Signal return.

/REM OFF: Remote Off Control not

COM: Common. Signal return

FLK/BYP: Flicker / Bypass OMNI control

/OVL:

CLA:

CLC:

Used)

CSB:

Overload not

Current Limit A. Programmed current limit reference for phase A

Current Limit C. Programmed current limit reference for phase C (Not

Current Sum Phase B. (Not Used)

N/C

FLT B:

N/C

Amplifier Fault Phase B (Not Used)

DC: DC mode control

INP OFF: Input power control

A ERR HI: Error Signal Phase A, high

N/C

B ERR LO: Error Signal Phase B, low (Not Used)

C ERR HI: Error Signal Phase C, high (Not Used)

3.7.2 Analog Input Connector

Table 3-3: System Interface Connectors

Input screw-terminal strip. Functions are called out on rear panel decal. Table shows connections from left to right when standing at the rear of the MX15 cabinet.

Pin

4

5

6

1

2

3

Description

RPV HI.

RPV Lo.

EXT SYNC HI

EXT SYNC Lo

RI:

RI:

INPUT: Analog input for External Modulation

INPUT: return.

INPUT: Analog input for external sync mode.

INPUT: return.

INPUT: Remote Inhibit. (See paragraph 3.12.)

INPUT: return.

Table 3-4: Analog Interface Connector

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3.7.3 BNC Connectors

BNC connectors. Functions are called out on rear panel decal. Table shows connections from left to right when standing at the rear of the MX15 cabinet.

BNC

1

2

3

4

5

Description

Trigger Input (TTL input)

Trigger Output (TTL output) (Same signal connection as Function Strobe. Some units may not have this output connected. If you don’t get an output trigger on this BNC, use the Function Strobe BNC instead.)

Function Strobe (TTL output) (Same signal connection as Trigger Output)

Clock (TTL output on Master / TTL input on Auxiliary)

Lock (TTL output on Master / TTL input on Auxiliary)

Table 3-5: BNC Connectors

3.7.4 External Sense Connector

Pin

3

4

1

2

Description

Phase A sense

N/C

N/C

Neutral sense

Table 3-6: External Sense Connector

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3.7.5 RS232C Serial Interface Connector

An RS232 serial interface connector is located on the rear panel on all models. Note that two versions of the RS232 exist on the MX model series depending on the age of the unit. Older models can be identified by the fact that they will not have a USB interface.

Pin

1

2

3

4

5

6

7

8

9

Name

N/C

TxD

RxD

N/C

Common

N/C

CTS

RTS

N/C

Direction

Output

Input

Common

Input

Output

Table 3-7: RS232 Connector pin out

– MX with RS232 and USB.

Pin

4

5

6

1

2

3

7

8

9

Name

N/C

RxD, Receive data

TxD. Transmit data

DTR, Data Terminal Ready

Common

N/C

RTS, Request to Send

N/C

N/C

Direction

Output

Input

DTR, Data Terminal Ready

Common

N/C

Output

N/C

N/C

Table 3-8: RS232C Connector pin out

– MX with RS232 but no USB

On MX models without a USB interface, a special RS232 cable is required to connect to a PC.

With these MX models, a special 13 foot / 4 meter long cable is supplied in the MX Series shipkit. The wiring diagram for this cable is shown below in case a longer cable has to be constructed. Alternatively, a generic straight thru DB9 male to DB9 female cable can be used to extend the supplied cable.

MX models that have both RS232 and USB interface use a more common straight through DB9 male to DB9 female serial cable, which is supplied in the MX ship kit for these models.

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DB-9 PC

5

6

3

4

Pin

1

2

7

8

9

5

6

3

4

Pin

1

2

7

8

9

DB-9 AC Source

Direction output input output output

input

-

output

Description reserved

Receive data(RxD)

Transmit data (TxD)

Data Terminal Ready (DTR)

Signal Ground

Data Set Ready (DSR) no connect no connect reserved

Figure 3-12: RS232C Cable for PC Connection wiring diagram

– MX without USB.

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3.7.6 USB Interface

A standard USB Series B device connector is located on the rear panel for remote control. A standard USB cable between the AC Source and a PC or USB Hub may be used.

Note: Use of the USB port to control more than one power source from a single PC is not recommended, as communication may not be reliable. Use GPIB interface for multiple power source control.

Pin

1

2

3

4

Figure 3-13: USB Connector pin orientation.

Name

VBUS

D-

D+

GND

Description

+5 VDC

Data -

Data +

Ground

Table 3-9: USB Connector pin out.

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3.7.7 LAN Interface

– RJ45

An optional RJ45 Ethernet 10BaseT connector is located on the rear panel for remote control. A standard RJ45 UTP patch cord between the AC Source and a network Hub may be used to connect the AC source to a LAN. For direct connection to a PC LAN card, a crossover RJ45 cable is required. Consult your network administrator for directions on connecting the AC source to any corporate LAN.

If the

–LAN Ethernet interface option is present, the MAC Address (Media Access Control) of the

Ethernet port is printed on the serial tag of the power source. The serial tag is located on the rear panel of the unit.

For information on how to set up a network connection or a direct PC connection using the LAN interface, refer to the MX Series Programming Manual P/N 7003-961 distributed in Adobe PDF format on CD ROM CIC496.

3

4

5

6

7

8

Pin

1

2

LAN

Ethernet TPE

10BaseT/100BastT/1000BaseT

Transmit/Receive Data 0 +

Transmit/Receive Data 0 -

Transmit/Receive Data 1 +

Transmit/Receive Data 2 +

Transmit/Receive Data 2 -

Transmit/Receive Data 1 -

Transmit/Receive Data 3 +

Transmit/Receive Data 3 -

EIA/TIA 568A

White with green stripe

Green with white stripe or

EIA/TIA 568B

Crossover

White with orange stripe

Orange with white stripe or solid green solid orange

White with orange stripe White with green stripe

Blue with white stripe or solid blue

White with blue stripe

Blue with white stripe or solid blue

White with blue stripe

Orange with white stripe or solid orange

White with brown stripe or solid brown

Brown with white stripe or solid brown.

Green with white stripe or solid

White with brown stripe or solid brown

Brown with white stripe or solid brown

Table 3-10: RJ45 LAN Connector pin out.

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3.8 Multiple Cabinet System Configurations (incl.

–MB)

Multi-cabinet MX models consist of two or three autonomous or Auxiliary MX15-1Pi units.

Auxiliary units do not have their own controller and are identified easily by their blank front panel.

Master units each have their own controller but can be configured as auxiliary units by disconnecting the ribbon cable marked J17 between the controller and the system interface board (P/N 7005-701-1). This disables the controller and allows the MX15 to operate as an

Auxiliary unit. (Requires removal of the top cover)

When used as a multi-cabinet system for higher power applications, the controllers in the unit(s) acting as the auxiliary to the master are either disabled or not present.

In addition to disabling the controller if present (as described above), the DIP switch (S1), located on the GPIB / RS232C / IO assembly in the auxiliary cabinets, settings need to be changed.

(Requires removal of the top cover). The correct switch settings are shown below. (shown set for

Master cabinet). Note that all units must be powered down before reconfiguring. Also, the output wiring must be changed to accommodate the new configuration.

Note: If the units being re-configured for multi-cabinet operation were not factory configured this way, it may be necessary to balance the amplifiers by adjusting

their gain. Refer to section 6.4 for details on Amplifier balancing.

When used as a multi-cabinet system, the system interface cables must be connected between the master and the auxiliary cabinets.

Top View from back of MX15

Chassis

MX15

Figure 3-14: Multi-Cabinet DIP Switch Location and Setting

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3.9 Multiple Cabinet Power Up/Down Procedures

For all multi-cabinet MX Series configurations (MX30/2, and MX45/3), the following Power Up

(Turn on) and Power Down (Turn off) procedures should be observed.

3.9.1 Power Up Procedure

Follow these steps:

1. Turn on each of the Auxiliary units using the front panel circuit breaker, one at a time.

The exact order for turning on the auxiliary units is not important. Note that the bias supplies of each of the auxiliary cabinets will power up but not the actual amplifiers. This is because the auxiliary units are waiting for the turn on signal from the master unit.

2. Once all auxiliary units are on, turn on the MASTER unit LAST using the front panel circuit breaker. The master unit will go through an initialization process and power up itself plus the auxiliary units.

3. Allow 20 to 30 seconds for the turn on sequence to complete before attempting to communicate with the system.

3.9.2 Power Down Procedure

The power-down / shutdown sequence for the system is the reverse of the power-up / turn-on sequence. This means the MASTER unit is turned off FIRST. Once the MASTER shuts down, all auxiliary units’ main AC input power contactors will open up automatically. They still need to be turned off individually using the front panel circuit breaker. This will shut down their bias supplies as well.

Follow these steps:

1. Disconnect the EUT by opening the MX15 output relay. Use the Output On/Off button on the master unit front panel or send the “OUTPUT 0” command over the bus to do so.

2. Turn off the MASTER unit FIRST using the front panel circuit breaker. The master unit will disengage the main AC power input contactors of all auxiliary units at this time.

3. Next, turn off each of the Auxiliary units using the front panel circuit breaker, one at a time. The exact order for turning off the auxiliary units is not important.

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3.10 Clock and Lock Configurations

The MX15 Series may optionally be equipped for clock and lock mode of operation. This mode is a special form of Master/Auxiliary, which requires each chassis to have its controller. As such, it is possible to create 1, 2, or 3 phase power systems using 2 to 3 MX15 chassis. For most single-

phase configurations, the normal multi-box mode of operation as described in section 3.7.5 is

recommended as it provides a single controller (and remote control interface).

In a clock and lock configuration, each unit has its own front panel controls (as well as individual remote control interfaces) for operating the supply but the output frequency of the auxiliary unit(s)

(-LKS option) is synchronized (locked) to the Master MX unit (-LKM).

This mode of operation requires that one MX15 has the -LKM (Lock Master) option and one or two MX units have the -LKS (Lock auxiliary) option.

3.10.1 Clock/Lock Configuration Settings

Clock and lock configuration settings for -LKM and -LKS equipped MX15's are set at the factory at the time of shipment and cannot be changed. To check the configuration settings for an MX15, select the OPTIONS screen. In the options screen, the CLOCK/LOCK entry determines if the unit can be set as a Master or Auxiliary as follows:

CONFIGURATION

Field Parameter Description

CLOCK/LOCK N/A

ON

Clock and Lock option is disabled

Clock and Lock option is enabled and can be turned on in the MODE field of the CONTROL menu.

Table 3-11: Clock and Lock Configuration settings

Note that the actual mode of operation of a Clock/Lock MX15-LKS auxiliary unit is determined by the Clock mode set in the CONTROL menu. For clock and lock mode of operation, the CLOCK field is set to EXT.

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3.10.2 Clock/Lock Initialization Settings

The mode of operation of the MX15 is determined by the MODE setting in the CONTROL menu.

If the clock and lock option is enabled, three choices will be available for this field: STAN, MAST, and AUX. Changing the MODE to either MAST or AUX will cause the power source to power on in clock and lock mode.

Available initial settings and their relationship to the Clock and Lock mode of operation are shown in the table below.

INITIAL SETUP 3

Field

CLK/LOC

Parameter

STAN

MAST

AUX

Description

Normal stand alone mode of operation. For standard MX15 power source with no clock and lock mode of operation.

For master (-LKM) power source in clock and lock mode of operation.

For auxiliary (-LKS) power source in clock and lock mode of operation. Powers up with clock mode set to external.

Table 3-12: Clock and Lock Initialization settings

3.10.3 Clock/Lock and External Sync Mode

Note that an MX15-LKS auxiliary unit is factory configured to operate in Clock and Lock mode when EXT clock mode is selected. This means that an MX15-LKS cannot be used in normal external sync mode. However, the MX15-LKM master unit can be operated in external sync mode.

Furthermore, since the MX15-LKM master unit is factory set for Master mode of operation, it in turn cannot be used as an Auxiliary source in a clock and lock configuration.

Note: When the clock and lock option is enabled, each power source will have all three settings available in the MODE field. The master box must be set to either STAN or MAST and the auxiliary box must be set to either STAN or AUX or the clock and lock feature will not work

correctly.

3.10.4 Remote Programming of Clock and Lock systems

Since clock and lock systems have multiple autonomous controllers that are synchronized in frequency, remote programming of these systems requires that the application program deal with all MX controllers. This often precludes the use of RS232C as generally not enough serial ports are available. The use of GPIB instead also offers the advantage of using the Group Execute

Trigger (GET) capability to effect output changes on all phases (MX's) simultaneously which is otherwise difficult to do.

To set up a GPIB remote controlled clock and lock systems, the GPIB addresses for the individual MX's must be set to different address values in the CONFIGURATION menu.

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Note: This mode of operation is not supported by the MXGUI Windows software supplied with each MX15 unit.

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3.11 Basic Initial Functional Test

California Instruments

CAUTION: Work carefully when performing these tests; hazardous voltages are present on the input and output during this test.

Refer to Figure 3-15 for the required functional test set up. Proceed as follows to perform a basic

function check of the power system:

1. Verify the correct AC line input rating on the nameplate of the MX unit(s) and make sure the correct three-phase line voltage is wired to the input of the MX before applying input power.

2. Connect a suitable resistive or other type load to the output of the MX. The load resistance value will depend on the voltage range you plan to check. Make sure the power resistor has sufficient power dissipation capability - up to 15 KW for full load test.

3. Connect an oscilloscope and DMM / voltmeter to the AC source output. Set both for AC mode.

4. If the correct voltage is present, turn on the MX unit(s) by closing the On/Off circuit breaker on the front panel. For multi-cabinet systems, turn on the auxiliary unit first and wait for them to cycle on, then turn on the master unit.

5. Set the output voltage to 0 volt and close the output relay with the OUTPUT ON/OFF button.

There should be little or no output although the DMM may show a noise level, especially if the DMM is in auto ranging mode.

6. Move the cursor to the VOLTAGE field in the PROGRAM 1 screen and either use the keyboard to program a small voltage (20 VAC) or slew the voltage up slowly with the knob.

Observe the DMM reading. The reading should track the programmed voltage.

7. Also monitor the scope. The output should be a sinusoidal voltage waveform.

8. If the output tracks, increase the voltage until you reach 80 % of the voltage range or more.

Check the output voltage reading and waveform.

9. Select the MEASUREMENT screen by pressing the MEAS button. The output voltage, current and power will be displayed.

In the unlikely event the power source does not pass the functional test, refer to the calibration

procedure in Section 6

or call California Instrument’s customer satisfaction department for further assistance.

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MX15

Figure 3-15: Functional Test Setup.

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3.12 Remote Inhibit / Remote Shutdown

It may be necessary to provide a remote shutdown of the AC or DC output of the MX. The external remote inhibit input may be used for this purpose (RI). This input is also referred to as remote shutdown.

The default mode of operation for the RI input is a contact closure between pins 5 and 6 (return) of the rear panel screw-terminal strip. This will open the output relay of the MX. The same can be accomplished with an active low TTL input signal.

It is possible to reverse the polarity of the RI input. This requires the use of the following bus command:

OUTPut:RI[:LEVel] HIGH

OUTPut:RI[:LEVel] LOW

/* Sets RI polarity to active high.

/* Sets RI polarity to active low (Factory default)

Either the RS232, USB, LAN or GPIB interface must be used to perform this setting. Once set, the polarity setting remains in effect.

When set to HIGH, an active low TTL level or a contact closure is required to enable the output relay of the MX. Opening the contact or removing the low input signal will cause the output relay to open.

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3.13 Junction Box Accessory

An optional wiring junction box (P/N 7003-416-1) is available which may be used to connect the outputs of 2 to 6 MX cabinets together. The junction box also has a protective ground connection, which MUST be connected to a suitable protective earth ground.

Each junction box has four sets of terminals for phase A, phase B, phase C and Neutral. For

MX15 application, only phase A and Neutral connections will be made. Each terminal is lined up with a strain relief on each side. The outputs f rom the MX15 cabinets connect to the “MX

SYSTEM OUTPUT” side of these terminal blocks. The load can be connected to the “LOAD”.

Note that the wiring is not supplied with the system and must be provided by the end user. The wire gauge of the load connection must be sized to handle the maximum current in the low voltage range of operation.

The “MX SYSTEM OUTPUT” side of the terminal block will accept up to 8 wires. If the external sense connection is made at the junction box, one of these can be used to connect the sense wiring.

Note: Do not swap output load wires or sense wires between phases, as damage to the system will result.

The “LOAD” side will accept 2 wires. The wire size range shown in Figure 3-16 refers to mechanical compatibility of terminal block only. This information does not reflect required wire size.

The wire sizes accepted by the terminal blocks of the junction box on each side are shown in

Figure 3-16.

MX15

Figure 3-16: 7003-416-1 Output Junction Box

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3.14 Output Filter Box Accessory

An optional output filter box (P/N 7003-424-1) is available which may be used reduce the amount of ripple and noise present at the output of the MX15-3Pi.

The filter must be connected between the single-phase output of the MX15 and the unit under test. To access the connection terminal blocks, the top cover of the filter case must be removed.

Note: Make sure all power is off when connecting the filter accessory.

The output of the MX15 is connected to the input side of the filter. Use terminal blocks TB1A

(phases A and B) and TB1B (phase C and neutral) as indicated in Figure 3-17. For MX15

application, only phase A and Neutral connection will be made. The load can be connected to the load side of the filter box using terminal blocks TB2A and TB2B. Do not swap phases through the filter.

To compensate for voltage drop across the filter, the external sense connections can be made at the load (load side of the filter).

Note: The filter box chassis must be connected to earth ground.

It is not recommended to use the ground connection on the MX15 itself for this purpose but rather a ground point at the AC service to the MX15.

MX15

Figure 3-17: 7003-424-1 Output noise filter box.

To MX15

Output

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4 Front Panel Operation

4.1 Tour of the Front Panel

The MX Series with type P or type Pi have identical front panels although some of the keys found on the front panel are only used by MX models with the Pi controller. If your unit is a P type controller, these keys will act as don’t cares. This chapter provides information on operating the

MX with either controller type.

Before operating the AC source using the front panel, it helps to understand the operation of the front panel controls. Specifically, the operation of the knob, keyboard and the menu layout are covered in the next few paragraphs.

4.1.1 Front Panel Controls and Indicators

The front panel can be divided in a small number of functional areas:

Mains circuit breaker

Status Indicator lights

Shuttle knob

LCD display

FUNCTION keypad

DATA ENTRY keypad

4.1.2 System On/Off Circuit Breaker

The circuit breaker located on the left side of the front panel disconnects the low voltage supply of the MX Source from the three phase Line input. This will remove power from the mains AC input contactor and thus remove input power from the MX Series power source. As such, the circuit breaker acts as an indirect power on/off switch for the MX Series unit. Note however that an AC input power remains applied to the primary side of the input transformer.

When the input current rating of the MX Series AC power source is exceeded, the protective fuses (XF1 through XF3) will blow. In this case, power to the low voltage supply may still remain through the front panel circuit breaker. In this case, the on/off circuit breaker should be opened

(power off) first followed by a complete disconnect of all ac input power through an installed main circuit breaker.

Note that in MX30/2 and MX45/3 systems, each unit has its own on/off circuit breaker and set of line input fuses.

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4.1.3 Status Indicator Lights

Five LED status indicators are located to the left of the LCD display. These LE

D’s correspond to the following conditions:

REMOTE

OVERLOAD

OVER TEMPERATURE

HI RANGE

OUTPUT

The REMOTE LED indicates that the unit is in remote control mode. If the IEEE-488 interface is used, this indicator will be lit whenever the REM line (REMOTE ENABLE) line is asserted by the IEEE controller. If the RS232, USB or LAN interface is used, the REMOTE state can be enabled by the controller using the

SYST:REM command. Any time the REMOTE LED is lit, the front panel of the MX Series unit is disabled. The BACK key doubles as a LOCAL button that allows the user to regain control of the front panel.

The OVERLOAD LED indicates an output overload condition.

This condition can be controlled by setting the current limit value in the PROGRAM menu. Removing the load using the OUTPUT

ON/OFF button will recover from an overload condition.

The OVER TEMPERATURE LED indicates an overheating problem inside the unit. This is an abnormal condition, which will cause the unit to shut off. Check the air openings to make sure they are not blocked.

The HI RANGE LED is on when the high voltage output range has been selected.

The OUTPUT LED is on when the output relay is closed.

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4.1.4 The Shuttle Knob

California Instruments

Figure 4-1: Shuttle Knob

The shuttle knob is located to the right of the keypad and is used to change setup parameters.

Note that it cannot be used to move the cursor position between menu fields. Use the UP and

DOWN arrow keys in the FUNCTION keypad for this.

The shuttle knob can operate in one of two distinct modes of operation:

MODE

IMMEDIATE mode

SET mode

DESCRIPTION

Any time the ENTER key is pressed, the MX Series returns to its normal mode of operation. In this mode, changes made with the shuttle knob or the data entry keypad will take immediate effect.

The IMMEDIATE mode is useful for slewing output values such as voltage and frequency and observing the effect on the load.

When the SET key located in the FUNCTION keypad is pressed, changes made with the shuttle to any output parameter will not take effect until the ENTER key is pressed. In this mode, any changes made to a setup menu will be blinking to indicate the pending change condition. This mode allows changes to be made to all output parameters and executing them all at once by pressing the ENTER key.

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4.1.5 FUNCTION Keypad

The function keypad provides access to all menus and measurement screens. The following keys are located in the FUNCTION keypad:

KEY

ON/OFF

PHASE

SET

MEAS

MENU

BACK

Figure 4-2: FUNCTION Keypad

DESCRIPTION

The ON/OFF key may be used to control the state of the output relay. The active state is indicated by the Output LED. If the output relays are open (LED is off), the output is floating.

The PHASE key has no function and is a don’t care.

The SET key selects the PROGRAM setting screen. While this screen is displayed, the rotary knob can be used to change either voltage or frequency. Additional output settings such as current limit can be reached by using the down  cursor key. If the PROGRAM screen is already displayed, the SET key puts the unit in SET mode. For test options such as

–704 or –160, the SET key can be used to skip to the next test in a test sequence during test execution.

The MEAS key selects the measurement screen. There are no user changeable fields in the measurement screen. The rotary knob is active while the measurement screen is displayed.

Additional measurement data can be displayed by using the up

 and down  cursor keys.

The top-level menu is accessed by pressing the MENU key.

Refer to section 4.2 for details on available menus. If a menu

screen is already displayed, the MENU key will advance to the next menu.

The BACK key may be used to back up to the previous menu level or previously selected screen. It can also be used as a backspace key to delete the last digit entered.

For tests options such as the

–160 and –704 options, the BACK key can be used to abort a test in progress.

If the unit is in remote mode, (Remote LED is lit), the front panel of the power source is disabled. The BACK button doubles as a

GOTO LOCAL button (LOCAL) while the unit is in remote state.

This allows the user to regain control of the front panel. This

LOCAL button can be disabled by sending a Local Lockout bus command. This prevents unauthorized changes of settings in

ATE applications.

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4.1.6 Cursor and Enter Keys

The cursor keys are located on the right hand side of the numeric keypad and can be used to scroll through a list of menu entries:

CURSOR UP () The UP key moves the cursor position upwards one position to the previous available cursor position.

CURSOR DOWN () The DOWN key moves the cursor position downwards one position to the next available cursor position.

ENTER The blue Enter key is used to confirm selections made in menus or to active settings made in SET mode.

4.1.7 LCD Display

The LCD display of the power source provides information on instrument settings and also guides the user through the various menus. A sample of the measurement display screen is

shown in Figure 4-3.

Menus are accessed by scrolling through two or more entries. Alternatively, the Menu key may be pressed repeatedly to access additional available menu entries.

The active cursor position is indicated by a LEFT POINTING ARROW () and can be moved by using the UP ()and DOWN () keys located on the right hand side of the numeric keypad.

Figure 4-3: Measurement Screen

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4.2 Menu Structure

The next few pages show a map of the available menus in the MX15 Series. All menus can be reached by repeatedly pressing the MENU key. Frequently used menus have a short cut key that provides direct access. Examples of such menus are Program and Measurements. In any case, there are never more than two levels of menus although some menus may be spread across more than one screen.

4.2.1 Power on screens

At initial power up, the MX15 Series power supply will display important configuration information in a series of power on screens. These displays are only visible for a short period of time and will not re-appear until the next time the unit is turned on.

There are four screens that will appear in the same order:

1. LANetwork detection... At power up, the unit will try to detect a LAN interface. If not found, a

“LAN not available” message will appear. The LAN will not be detected if:

1. No

–LAN option is installed.

2. The USB port is connected to a computer.

3. The RS232 port jumper is installed.

This process may take several seconds.

2. Initialization in progress. This means the firmware has started to load.

3. Company and firmware information. Displays the manufacturer - Cal Inst., which is short for

California Instruments - and the firmware part number and revision. The firmware part number starts with CIC followed by a three-digit code and dash number. The firmware revision has a major revision before the decimal point and a minor revision after the decimal point.

4. Model and Serial number information. The model will be a function of the configuration and will include the series designation (MX). The serial number is a 5-digit number. This number should match the model type sticker located on the back of the unit.

5. Memory test result. If all memory tests pass at power on, the message "Self test passed" will appear. If not, an error message will be displayed instead. This information may be useful when calling in for service support.

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Once the power on sequence is completed, the power source will always revert to the

PROGRAM screen shown here. The power source is now ready to be used.

4.2.2 Top Level Menus

The following top-level menu choices can be accessed using the Menu key:

ENTRY

PROGRAM

CONTROL

MEASUREMENTS

TRANSIENTS

REGISTERS

CONFIGURATION

OUTPUT CAL

MEAS CAL

APPLICATIONS

OPTIONS

DESCRIPTION

The PROGRAM menu allows primary output parameters such as voltage, frequency, current limit, waveform shape and voltage range to be changed.

The CONTROL menu allows secondary setting parameters such as sense mode, phase mode and ALC mode to be changed.

The MEASUREMENT screen is not a menu in that no user entries are required. It displays read-back data.

The TRANSIENTS menu allows output transients to be programmed.

The SETUP REGISTERS menu allows complete instrument settings and transient list programs to be saved to nonvolatile memory.

The CONFIGURATION menu allows changes to be made to configuration settings such as the IEEE-488 address, RS232C internal baud rate, and power on state.

The OUTPUT CAL menu provides access to the LCD viewing angle and Calibration password entry. If the correct calibration password is entered, additional calibration screens can be accessed.

The MEAS CAL menu allows for calibration of the AC source measurement system.

The APPLICATIONS menu provides access to the optional firmware application programs that may be installed in the power source controller.

The OPTIONS menu provides access to optional functions that may be present on the power source.

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ETIME/TEMP

LIMITS

California Instruments

The ETIME/TEMP screen displays the Elapsed time (Time the unit has been in operation) in hours, minutes and seconds. It also displays the internal temperature of the unit in degrees Celsius.

The LIMITS screen displays the hardware configuration limits of the AC power source. It is for display purposes only and the user can change none of these fields.

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4.2.3 Menu Tree

MX15 Series

LEVEL 1

PROGRAM

CONTROL

MEASUREMENT

TRANSIENT

Menu Structure

LEVEL 2 LEVEL 1 LEVEL 2

VOLT 120.0V REGISTERS SAVE REG #

FREQ 400.0HZ CONFIGURATION RECALL REG #

VRANGE 150.0V

PHASE 0.0°

FUNC >SINUSOID

CLIP THD 10.0

VOLT MODE AC

DC OFFSET N/A

CURR 125.00A

OL MODE CV

SENSE INT

SYNC INT

CLOCK INT

MODE STAN

OUTP CAL

MEAS CAL

ADDRESS 1

BAUD RATE 38400

PON STATE RST

LANetwork <

VIEW ANGLE 0

CAL PWORD 0

VOLT FS 17251

VOLT ZERO -91

IMP REAL FS 0

IMP REAC FS 0

IMP REAL0in

IMP REAC0in

ALC STATE ON

IMP STATE OFF

IMP RES 0mΩ

IND 0mH

# OUTPUTS N/A

ST PHASE RAND

PHASE OFST 0.0

VIEW ANGLE 0

CAL PWORD 0

MVOLT FS -1000

MCURR FS -3000

100.00V 49.04A APPLICATIONS MIL704

400.0HZ 4.9KW OPTIONS DO160

4.9KVA 1.00pF

49.04A 0.98cF

0.18%A 0.05A

0.19%V 0.0°

TRAN ST IDLE

COUNT 10

TRIG SOUR IMM

TRAN STEP AUTO

VOLT #12 120.0

VSLEW #12 MAX

FREQ #12 400.0

FSLEW #12 10.00

MS704

WHM

REGEN

INTER HARMONICS

SYSTEM MX15-1Pi

ADVANCE ON

MODE N/A

CLOCK/LOC N/A

MIL704 N/A

DO160 N/A

MS704 N/A

ABD N/A

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Power On

Screens

DWELL #12 10.00

TTLT #12 ON

FUNC #12 SINUSO

PHASE#12 0.0

CURR #12 125.0

#1 Initialization

in progress

#2 CAL. INST.

CIC920-1,Rev 1.0

ETIME/TEMP

LIMITS

#3 MODEL MX15-1Pi

SERIAL #54321

#4 Memory test

passed

Table 4-1: Menu Tree

LF N/A

MB N/A

WHM N/A

LAN N/A

OPT(0) N/A

SNK N/A

IEC413 N/A

IEC411 N/A

ETIME 21:20:03

TEMP 25:33°C

LIM VOLT

LOW 150.0

LIM VOLT

HIGH 300.0

LIM VOLT

Xform 400.0

LIM FREQ

LOW 16

LIM FREQ

HIGH 819

LIM CURR 125.0

PHASE(C) 0.0

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4.2.4 PROGRAM Menus

California Instruments

MX15

Figure 4-4: PROGRAM Menus

The PROGRAM menu is shown in Figure 4-4. It can be reached in one of two ways:

1. By selecting the MENU key, selecting the PROGRAM entry and pressing the Enter key.

2. By pressing the SET key.

The PROGRAM menu is used to change primary output parameters. Less frequently used parameters are located in the CONTROL menu.

The following choices are available in the PROGRAM menus:

ENTRY DESCRIPTION

VOLT

FREQ

VRANGE

PHASE

FUNC

CLIP LEVEL

Programs the output voltage in Vrms. The voltage can be changed from 0 to its max range value as determined by the configuration settings and the selected voltage range by using the keypad + Enter or the shuttle (if the voltage field is selected).

Programs the output frequency. The frequency can be changed from its min to its max value as determined by the configuration settings by using the keypad + Enter or the shuttle (if the frequency field is selected).

Selects 150V, 300V, or 400V voltage range (if available). The value of this field can be changed with the shuttle as long as the active pointer () points to the VRANGE entry.

Selects the phase angle between the external clock and the output of the AC source. If the clock source is internal, this parameter has no effect.

Selects the waveform for the selected phase. On MX15-1Pi models, available choices are SINUSOID, SQUARE and

CLIPPED or any user defined waveform that was downloaded to the AC source waveform memory using the RS232 or IEEE-488 interface.

This field is fixed to SINUSOID on MX15-1 models.

Sets the clip level for the CLIPPED sine wave in percent VTHD.

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ENTRY

VOLT MODE

DC OFFSET

CURR

OL MODE

California Instruments

DESCRIPTION

The range is 0 to 20 %. (MX15-1Pi models only).

Note: Changing the clip level setting will result in temporary loss of the output voltage as the new clipped waveform is loaded.

This may cause the EUT to reset or turn off. To avoid this, set the desired clip level before programming the AC voltage and turning on the output to the EUT or use the transient list system

to switch between waveforms.

Selects the available output modes of operation. Available modes are AC, DC (all models) and ACDC (Pi models only). The shuttle can be used to select the desired output mode.

This parameter applies only when the power source is in ACDC mode. The DC offset can only be set to a max value of

220VDC. The rms level of the AC+DC waveform may not exceed the limit of the voltage range (150V or 300V).

Note: Changing the offset percentage setting will result in temporary loss of the output voltage as the new offset is loaded.

This may cause the EUT to reset or turn off. To avoid this, set the desired offset percentage before programming the AC

voltage and turning on the output to the EUT.

Sets the current limit value for the current detection system.

When the load current value exceeds the set current limit, a fault condition is generated. The actual response of the AC Source to a current limit fault is determined by the protection mode selected in the OL MODE field. (CC = Constant Current, CV =

Constant Voltage).

Sets the current limit overload mode. The actual response of the

AC Source to a current limit fault is determined by this setting.

Available settings are CC for Constant Current mode or CV for

Constant Voltage mode. In CV mode, the AC source output will trip off and stay off until re-engaged. In CC mode, the voltage will be reduced until the current limit is no longer exceeded.

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4.2.5 CONTROL Menus

California Instruments

Figure 4-5: CONTROL Menus

The CONTROL menu is shown in Figure 4-5 and can be reached by selecting the Menu key,

selecting the CONTROL entry using the DOWN cursor key and then pressing the Enter key.

The CONTROL menu is used to change secondary output parameters. The following choices are available in the CONTROL menus:

ENTRY DESCRIPTION

SENSE

SYNC

CLOCK

Selects internal or external (remote) voltage sense mode. If INT is selected, the voltage is sensed at the output terminal block. If EXT is selected, the voltage is sensed at the external sense connector. If external sense is selected, care must be taken to connect the external sense lines at the load. For sense leads longer than 1 meter, twisted pairs should be used.

Selects the external sync mode if available. Default is internal sync, which means a free running time base. The time base can be synchronized to an external sync signal by selecting external sync mode.

Selects internal or external clock source. The MX Series controller uses an open-air crystal time base with an accuracy of 100 ppm. The external clock mode is used to support the

–LKS option. For use as an auxiliary unit in a clock and lock system, this field must be set to

EXT. A unit with

–LKS option can be used stand-alone if needed by setting the INT clock mode.

Default, internal clock. INT

EXT Auxiliary unit (-LKS) driven by master (-LKM) clock input.

Note: When selecting EXT mode, make sure the

Clock and Lock BNC cables are connected to the

Master (-LKM) unit. If not, there will be no output on the

–LKS unit. See section 3.10 for connection

information.

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ENTRY

MODE

ALC STATE

IMP STATE

# OUTPUTS

California Instruments

DESCRIPTION

Power on clock mode. The following two modes can be selected.

STAN Power up in INT (internal) clock mode for standalone operation. This is the only mode for models without the

–LKS option.

For units with the

–LKM option installed, this field is fixed to CLK/LOCK.

For units with the

–LKS option installed, this field can be changed to CLK/LOCK for use as an auxiliary unit in a clock and lock system or to STAND for use as a stand alone unit.

CLK/LOCK Fixed on master (-LKM) unit configuration in a clock and lock system. Power up with EXT (external) clock mode on unit with

–LKS option. (See OPTION menu section.).

Note that this field cannot be changed if the

–LKM option is installed.

The frequency resolution below 81.9 Hz in MAST clock and lock mode is reduced to 0.1 Hz from the normal 0.01 Hz.

Sets the Auto Level Control (ALC) mode. This mode uses the internal measurement system to zero regulate the output. There are three modes of operation:

OFF No measurement based output regulation.

REG Output regulation is enabled. AC source will continuously regulate output but will not trip off output.

ON Output regulation is enabled and output will fault (trip off) with Error 801 “Output Voltage fault” if regulation cannot be maintained and the programmed output voltage is 10Vrms or higher. No error is generated for settings below 10 volt.

In most situations, the ALC mode should be set to REG or ON for optimal performance.

Note: The ALC mode only functions for programmed output voltages above 10 Vrms.

Selects programmable output impedance. The ALC mode must be turned off for the programmable impedance to be turned on. This function allows you to change the output impedance (R and/or L) of the power source.

Selects SINGLE or THREE phase mode of operation. The MX15 models operate only in single-phase mode so this field will always show N/A (not applicable).

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ENTRY

ST PHASE

California Instruments

DESCRIPTION

Selects the start phase angle for output changes made to either voltage or frequency. This allows changing the output at a specific phase angle. The ON/OFF key also uses this phase angle setting to program the output voltage up to the set level after the output relay is closed. The default value for this field is RAND. To set the start phase angle, set the cursor to the ST PHASE field and use either shuttle knob or the keypad to adjust between ± 360°. To set to

RAND, use the BACK key.

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4.2.6 MEASUREMENTS Screens

The MX Series uses a DSP based data acquisition system to provide extensive information regarding the output of the source. This data acquisition system digitizes the voltage and current waveforms and calculates several parameters from this digitized data. The results of these calculations are displayed in a series of measurement data screens. A total of three measurement screens are used to display all this information.

MX15

Figure 4-6: MEASUREMENT Screen

The Measurement screens available on the MX15 Series are not menus in that no changes can be made anywhere. Instead, these screens provide load parameter readouts. The measurement screens can be reached by successively pressing the Meas key, which will toggle to all available screens. Note that for -1 Series models, only the first two screens are available. For the

–1Pi series, all three measurement screens are available.

The following parameters are available in the measurement screens:

ENTRY DESCRIPTION

VOLTAGE

CURRENT

FREQ

TRUE POWER

VA POWER

POWER FACTOR

PEAK CURRENT

CREST FACTOR

CURR THD

MEASUREMENTS 1

This value is the true rms output voltage measured at the voltage sense lines.

This value is the true rms output current drawn by the load.

The output frequency is measured at the sense lines.

This value is the real power.

MEASUREMENTS 2

This value is the apparent power.

This readout shows the power factor of the load.

This value is the instantaneous peak current. See also PEAK CURR in MEASUREMENTS 3 screen.

This readout displays the ratio between peak current and rms current.

MEASUREMENTS 3 (iX Models only)

This readout displays the total current distortion for the selected

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ENTRY

PEAK CURR

VOLT THD

DESCRIPTION

phase. The distortion calculation is based on the H2 through H50 with the RMS current in the denominator. Note that some definitions of THD use the fundamental component (H1) of the current as the denominator.

If desired, the user can program the power source controller to use the fundamental component as the denominator. This mode can only be programmed over the bus by sending the “MEAS:THD:MODE

FUND” command. At power up or after a reset command, the mode will revert back to RMS.

This readout reflects the highest peak current value detected at the output. This is a track and hold peak current measurement. To measure inrush current for a unit under test, open the output relay and reset the peak current value using the BACK key. Then program the output voltage and frequency and turn on the output relay. The peak current measurement will continuously track the maximum current value detected until reset. See also PEAK CURRENT in

MEASUREMENTS 2 screen.

This readout displays the total voltage distortion for the selected phase. The distortion calculation is based on the H2 through H50 with the RMS voltage in the denominator. Note that some definitions of THD use the fundamental component (H1) of the voltage as the denominator.

If desired, the user can program the power source controller to use the fundamental component as the denominator. This mode can only be programmed over the bus by sending the “MEAS:THD:MODE

FUND” command. At power up or after a reset command, the mode will revert back to RMS.

PHASE Relative voltage phase angle measurement with respect to phase A.

This readout is only relevant if an external clock source is used.

Update Program Functions from Measurement Screen

The Shuttle knob can be used to update voltage and/or frequency settings while the measurement readout screen is displayed. To do so, select the desired parameter to be changed while in the SET screen using the left arrow cursor. Then, select the measurement screen by pressing the MEAS button. While the measurement screen is visible, the shuttle continues to operate.

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4.2.7 TRANSIENT Menu

California Instruments

MX15

The transient menu is used to program and execute user-defined output sequences. These output sequences are defined as a sequential list of voltage and/or current settings that can be executed in a time controlled manner.

Each step in these lists is assigned a sequence number ranging from #0 through #99. The numbering determines the order in which each step is executed.

Each step can control the voltage setting, voltage slew rate, frequency setting, frequency slew rate and dwell time. The dwell time determines how long the output dwells at the current step before progressing to the next step. Dwell times can range from 1 ms up to 900000 seconds.

Transient lists can be set up from the front panel or over the bus. The transient list can be saved with the rest of the front panel settings in one of the setup registers. (See Register Menu).

ENTRY DESCRIPTION

TRAN ST Indicates the status of the transient system. Available modes of operation are:

IDLE Transient system is in IDLE or inactive state. To start a transient list, press the ENTER key while on the TRAN STATE field. Note that the output must be ON to run a transient program or an error message will be displayed.

WTRIG Transient system is armed and waiting for a trigger event.

COUNT

BUSY Transient system is active. A transient list execution is in progress.

Sets the execution count for the transient system. A count of 1 indicates the transient will run 1 time. The count value can be set with the shuttle or the keypad. The count range is from 1 through 2E+08. Values below 200,000 are displayed in fixed point notation. Value higher than 200,000 are displayed as a floating point number (2E+05). The display has insufficient

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ENTRY

TRIG SOURCE

TRAN STEP

List parameters:

VOLT

VSLEW

FREQ

FSLEW

DWELL

TTLT

FUNC

DESCRIPTION

characters to display the entire mantissa so entering values above 2E+05 from the keyboard is not recommended.

Indicates the trigger source for transient system. Available trigger sources are:

IMM Immediate mode. The transient is started from the front panel using the ENTER key.

BUS

EXT

Bus mode. The transient system is started by a bus command or a group execute trigger (GET).

External mode. The transient system is started by a user-provided external TTL trigger signal on

TRIGGER IN.

Indicates the transient system execution mode. Available modes are:

AUTO

ONCE

When triggered, the transient system will automatically execute each list point sequentially without waiting for a trigger between list points.

This execution is paced by the dwell time set for each data point.

When triggered, the transient system will execute the first list point and wait for a new trigger once the dwell time expires. This allows triggered execution of each step in the transient list.

Step #

Step #

Step #

Step #

Step #

Step #

Step #

Voltage set point

Voltage slew rate in V/s

Frequency set point

Frequency slew rate in Hz/s

Dwell time in seconds.

Range is 0.001 to 900000

ON: Generates an output trigger pulse at this list step.

OFF: No output trigger.

The output trigger is available on the TRIG OUT on the rear panel.

Waveform selection. Available choices are

Sinusoid, Square, Clipped or any of the user

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ENTRY

PHASE

DESCRIPTION

provided waveforms in waveform memory (-1Pi models only).

Step #

Step #

Phase angle set point. (Not relevant for phase A if clock mode is internal.)

Current set point CURR

Transient List point data entry method.

Transient list points are numbered sequentially from 0 through 99 and executed in this order.

Each list point or list entry has 9 parameters as shown in the table above. To enter list point data, the keypad must be used. The shuttle knob is used to increment or decrement the list point sequence number (#). The sequence number can only be increased to the next available empty

(new) list point.

To move to the next or previous parameter, use the UP () or DOWN () cursor keys

It is not necessary to use all list points, only as many needed to accomplish the desired output sequence.

Setting Data Values

Data values can be set for each point in a list. If all data values in a specific list are going to be the same value (e.g. the current limit parameter is set to the same value for the entire transient program), only the first data value for that parameter has to be set. Setting only the first data point will automatically repeat that value for all subsequent points in the transient list.

Setting Slew Rates

Very often, output changes must be done as fast as the power source can make them. This means the transient list slew rate is set to its maximum value. If this is the case for all the data points in the list, it is sufficient to set just the first data point's slew rate for either voltage and/or current. Setting only the first point of any parameter in the list will automatically cause all points for that parameter to be set to the same value. This saves a lot of data entry time. The max slew rate can be set by entering a value of 0. When the enter key is pressed, the value will change to

“MAX”.

If however, one or more data points require a specific slew rate such as needed to do a ramp, all other points have to be specifically set to their required slew rates, including the maximum slew rate.

Saving Transient Lists

Once completed, a transient sequence can be saved along with the steady state setup of the instrument by using the REGISTER, SAVE menu. Registers that may be used for this purpose are 1 through 15. It is advisable to do so, especially for longer transient lists.

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4.2.8 REGISTERS Menu

California Instruments

The registers menu provides access to the non-voltage setup storage of the power source. A total of 16 front panel setups can be stored in registers numbered from 0 through 15. Each register except register 0 can hold the complete front panel setup, including the programmed transient list. This allows for quick recall of different setups and transient programs.

Register 0 is reserved to be used as the power-on setting as assigned by the user. To have the power source start in a specific setting, save the desired setting to Register 0 and assign register zero as the power-on default in the CONFIGURATION menu. Alternatively, the power source

can be set to power up with the RST factory default settings. See section 4.2.9 for factory default

settings.

ENTRY

SAVE

RECALL

DESCRIPTION

REG 0

– 15

Saves the selected setup and transient list from memory. (Setup only for Reg 0) The shuttle knob may be used to scroll through the available list of setup register numbers.

Use the ENTER key to perform the save operation.

Register 0 can be assigned as the power-on state setup from the CONFIGURATION menu.

A valid setup must be saved in REG0 to do so.

REG 0

– 15

Note that REG0 only saves the setup, not the transient list. All other registers also save the transient list.

Recalls the selected setup and transient list to memory. (Setup only for Reg 0) The shuttle knob may be used to scroll through the available list of setup register numbers.

Use the ENTER key to perform the recall operation.

Register 0 can be assigned as the power-on state setup from the CONFIGURATION menu.

A valid setup must be saved in REG0 to do so.

Note that REG0 only saves the setup, not the transient list. All other registers also save the transient list.

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4.2.9 CONFIGURATION Menu

California Instruments

MX15

The configuration menu may be used to configure various aspects of the instrument such as the serial port (including USB and LAN), IEEE-488/GPIB address and the power-on settings of the supply.

ENTRY DESCRIPTION

ADDRESS 0 - 31

BAUD RATE

PON STATE

9600

19200

38400

57600

115200

230400

460800

REG0

RST

Sets the selected IEEE / GPIB bus address for the optional IEEE/GPIB interface.

Factory default is address 1. The shuttle knob or the keypad can be used to set a value from

0 through 31. Do not use address 0 as this address is typically reserved for the GPIB controller.

Sets the baud rate for the RS232 communications port. Factory default is

38400 baud. Available settings are 9600 through 115200 baud.

The same setting is used for USB and LAN modes. For use with either USB or LAN, the baud rate in this screen must be set to

460800.

Note: The shuttle knob can be used to scroll through these selections.

Determined power on state. This setting selects either non-volatile REG0 to be recalled automatically at power-on or factory default

(RST). Factory default is RST, which recalls the factory settings. See below.

Factory default settings are:

Output relay

Voltage Range

Mode

Voltage

Frequency

Open

Low

AC

0 Vrms

60 Hz

Note that to use REG0 for power-on default, the contents of the register must be

programmed first. See section 4.2.8. If an

empty register is selected, the power source will revert back to RST (factory setting).

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ENTRY

LANetwork

MX15

California Instruments

DESCRIPTION

LAN

IP Address

If the

–LAN option is installed; pressing Enter while the cursor is on the LANetwork entry provides access to the LAN interface setting screens listed below.

Displays the IP address setting. This value can be changed by pressing the SET key and entering a new value from the keypad. Use the numeric data pad to enter each field. To move between the four fields, use the decimal point key on the keypad.

To set a fixed IP address, press SET and enter the desired IP address. To set the unit to

DHCP mode, press SET and enter all zeros

(0.0.0.0) as the IP address and cycle power two times. The obtained IP address will be displayed after the second power on.

Any change to this value will NOT take effect until after power on the unit has been cycled.

When changing mode from static IP to DHCP, it is necessary to cycle power on the unit twice, once to change mode and again to obtain and display a new IP address from the network.

MAC Address Displays the network Media Acces Control address. This value is fixed and cannot be changed. The same MAC is normally printed on the model serial tag. The MAC address is shown as six hexadecimal numbers separated by a colon, e.g. 02:20:4A:9A:02:FD. Note that the leading

‘0’ is never visible due to the maximum number of LCD characters per line.

GWAddress

HostBits

Gateway address setting. A default gateway is a node (a router) on a computer network that serves as an access point to another network.

This value can be changed by pressing the

SET key and entering a new value from the keypad. Use the numeric data pad to enter each field. To move between the four fields, use the decimal point key on the keypad.

Any change to this value will NOT take effect until after power on the unit has been cycled.

Number of host bits as opposed to network bits in network mask. A CIDR class C network uses 24 network bits and 8 host bits. (Class A

= 24, Class B = 16).

This value can be changed by pressing the

SET key and entering a new value from the keypad. Any change to this value will NOT take effect until after power on the unit has

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ENTRY

California Instruments

DESCRIPTION

Port No

LAN Default been cycled.

TCP remote port number. This value must be set to 5025 (SCPI) to support the built in web page.

This value can be changed by pressing the

SET key and entering a new value from the keypad. Any change to this value will NOT take effect until after power on the unit has been cycled.

LAN default setting can be achieve by selecting the Mac address screen and press the set key followed by the Enter key. Press the Enter key again to confirm. The IP address is set to DHCP or AUTO IP.

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4.2.10 CALIBRATION Menus

Measurement Calibration:

Output Calibration:

California Instruments

The measurement calibration menu can be used to perform routine calibration of the internal measurement system. The recommended calibration interval is 12 months. To enter the calibration screens, the calibration password must be entered first.

The output calibration menu can be used to perform routine calibration of the voltage output and programmable impedance. The recommended calibration interval is 12 months. To enter the calibration screens, the calibration password must be entered first.

Note: Refer to chapter 6 for details on routine calibration procedures and equipment requirements. Do not attempt calibration without consulting the user manual.

This menu also contains the LCD viewing angle adjustment.

ENTRY

VIEW ANGLE

DESCRIPTION

-10 to +10 LCD viewing angle adjustment.

CAL PWORD

MVOLT FS

MCURR FS

Calibration password required to access all calibration screens. The calibration password is 5000. The password can be entered using the keypad or shuttle followed by the ENTER key.

Measurement Calibration Screens

Calibration coefficient for full-scale voltage measurement.

Calibration coefficient for full-scale current measurement.

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ENTRY

VOLT FS

VOLT ZERO

IMP REAL FS

IMP REAC FS

IMP REAL0in

IMP REAC0in

PHASE OFST

California Instruments

DESCRIPTION

Output Calibration Screens

0.0 - 360.0

Calibration coefficient for voltage output.

Zero offset voltage calibration factor.

Full scale resistive output impedance calibration factor.

Full scale inductive output impedance calibration factor.

Minimum resistive AC source output impedance. The source has an output impedance greater than zero. This value determines the minimum resistive component of the AC source output impedance.

Minimum reactive AC source output impedance. The source has an output impedance greater than zero. This value determines the minimum resistive component of the AC source output impedance.

Phase offset calibration factor. Compensates for phase shift caused by AC amplifier.

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4.2.11 APPLICATIONS Menu

Note that some of the application options listed in this section may not be available on all MX15 models and may not be configured. In this case, these fields in these menus will display “N/A”

(not applicable) and no access to these menus will be available.

The Applications menu provides access to application specific firmware functions if available.

Note that there may be no applications installed in which case this screen will still be shown but has no function.

Possible applications are DO160 and MIL704. To access either of the application screens, position the cursor on the APPLICATIONS entry and press the ENTER key. Select the desired application and press ENTER.

4.2.12 OPTIONS Menu

MX15

The Options menu provides access to available optional features. Note that there may be no options installed in which case this screen will still be shown but has no function. The option settings are protected and cannot be changed by the user. These screens are provided for information purposes only.

ENTRY

SYSTEM

ADVANCE

DESCRIPTION

Shows model number.

ON Designates the advanced measurement and

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ENTRY

CLOCK/LOC

MIL704

DO160

MS704

ABD

LF

MB

DESCRIPTION

N/A

N/A

MAST

AUX arbitrary waveform capability (-1Pi).

This feature is not available on

–1 models. N/A is shown.

Clock and lock is an option. If no

–LKM option is installed, this field will show N/A.

-LKM Option installed. The unit can be used as a Clock and Lock system master or standalone.

-LKS option installed. The unit can be used as a Clock and Lock system auxiliary or standalone.

Avionics test - MIL-STD 704 revs D and E

Option (as interpreted by AMETEK at time of release)

Avionics test

– RTCA DO160 Option

Avionics test - MIL-STD 704 revs A through F

Option (according to Appendix A released with rev F)

Avionics test

– Airbus ABD0100.1.8 Option

Low Frequency Option

– Frequency will be limited to 500Hz

Multi-Box Option

– Each MX15 in a multibox configuration will have its own controller.

4.2.13 Elapsed Time and Temperature Screen

MX15

The Etime/Temp screen displays the elapsed time since the power source has first been turned on. This is an accumulated total time in hours, minutes and seconds.

The same screen also displays the internal temperature of the power supply.

ENTRY

ETIME

DESCRIPTION

01:23:45 The ETIME field displays the total accumulated elapsed time for the instrument since it's initial manufacture. This value cannot

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ENTRY

TEMP

California Instruments

DESCRIPTION

37.342° be changed or reset.

The TEMP field is not a user selectable parameter but rather a read-out of the internal temperature in degrees Celsius. It is provided for informational purposes only.

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4.2.14 LIMIT Menu

California Instruments

The Limit menu displays the maximum available value for voltage, frequency and current range of the power supply. This screen is used for information only and contains no user changeable fields. The limit values shown cannot be changed.

ENTRY DESCRIPTION

LIM VOLT

LOW

LIM VOLT

HIGH

LIM VOLT

Xform

LIM FREQ

LOW

LIM FREQ

HIGH

LIM CURR

Low Voltage

Range

High Voltage

Range

Extra Voltage

Range

Low Frequency

Limit

High Frequency

Limit

C range

Displays maximum available output voltage in the low voltage range.

Displays maximum available output voltage in the high voltage range.

Displays maximum available output voltage in the extra voltage range. (HV or EV option)

Displays minimum available output frequency.

Displays maximum available output frequency

PHASE (C) Phase Setting

Displays maximum available current in low voltage range at full power.

Displays phase angle for phase C. Valid values are 120 for three-phase or mode configuration,

0 for single-phase only configuration. Any other value indicates split (2) phase configuration.

The MX15 is single phase only, so this will always show a value of 0.

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4.3 Output Programming

4.3.1 Set the Output

Output parameters are all set from the PROGRAM screen.

1. Use the MENU key and select the PROGRAM entry.

2. Press the ENTER key to bring up the PROGRAM menu. or

2. Use the SET key to directly bring up the PROGRAM menu.

There are two methods for programming output parameters:

IMMEDIATE mode

SET mode

4.3.2 Slewing Output Values in IMMEDIATE Mode

The default mode of operation is an immediate mode in which changes to output parameters made with the knob or the entry keypad are immediately reflected at the output.

To change the output voltage:

1. Place the cursor on the VOLT entry

2. Rotate the shuttle knob clockwise to increase the value, counterclockwise to decrease the value or use the Keypad to enter a value and press the Enter key.

These changes take effect immediately.

To change the output frequency:

MX15

1. Place the cursor on the FREQ entry

2. Rotate the shuttle knob clockwise to increase the value, counterclockwise to decrease the value or use the keypad to enter a value and press the Enter key.

These changes take effect immediately.

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4.3.3 Change Output Values in SET Mode

The SET mode of operation is a mode in which changes to output parameters made with the knob or the entry keypad do not affect the output until the Enter key is pressed. The AC source is put in this SET mode by pressing the Set key twice. A blinking cursor indicates SET mode is active.

To change the output voltage:

1. Press the Set key twice

2. Place the cursor on the VOLT entry

3. Rotate the shuttle knob clockwise to increase the value, counterclockwise to decrease the value or enter a new value using the keypad but do not press the Enter key yet.

4. A blinking underline cursor will appear in the data for the VOLT field to indicate a change in settings but the output remains unchanged.

5. Place the cursor on the FREQ entry using the down arrow key.

6. Rotate the shuttle knob clockwise to increase the value, counterclockwise to decrease the value or enter a new value using the keypad but do not press the Enter key yet.

7. A blinking underline cursor will appear in the data for the FREQ field to indicate a change in settings but the output remains unchanged.

8. Press the Enter key.

Both new voltage and frequency output values are now present at the output. The unit has returned to immediate mode of operation until the SET key is pressed again.

Note that output settings such as voltage and frequency can be changed from the measurement screen as well. If all three phases are selected on three phase models, slewing the shuttle knob will change the output voltage on all three phases. If only one phase is selected, only the output of the selected phase will be affected.

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4.4 Waveform Management [1Pi Controller only]

The MX Series with 1Pi controller employs independent arbitrary waveform generators for each phase. This allows the user to create custom waveforms. In addition, three standard waveforms are always available. This chapter covers issues that relate to defining, downloading and managing custom waveforms.

4.4.1 Standard Waveforms

For most AC applications, a sine wave shape is used. The sine wave is one of the standard waveforms provided on all MX Series models. This standard sine wave is always available and is the default waveform at power-on. On MX models with the 1Pi controller, two more standard waveforms are available, square and clipped.

Figure 4-7: Selecting a Waveform

The square wave provides a high frequency content waveform with relative fast rise and fall times. Due to AC amplifier bandwidth limitations, the frequency content of the standard square wave has been kept within the amplifier’s capabilities. As the fundamental frequency is increased, the relative contribution of higher harmonics is reduced.

The clipped sine wave may be used to simulate voltage distortion levels to the unit under test.

The total harmonic distortion level may be programmed in percent using the CLIP THD field of the PROGRAM menu. Changing the distortion level of the CLIP waveform forces the AC source to regenerate the CLIPPED sine wave’s data points and reload the waveform register with the newly requested data. This process requires the output to be dropped. To avoid interrupting the voltage output to the unit under test, select a different waveform such as the standard sine wave first, change the clip level and change the waveform back to the CLIPPED sine wave. This will avoid any output interruption.

4.4.2 Creating Custom Waveforms

The 1Pi controller provides four groups of 50 custom defined waveforms each for a total of 200 waveforms in addition to the 3 standard waveforms. Of these four groups, one may be active at a time.

Custom waveforms cannot be created from the front panel of the MX Series. Rather, they have to be downloaded through the IEEE-488 or RS232C interface. A Windows based program is included with the MX Series that allows waveforms to be created and downloaded easily. This

Graphical User Interface program allows waveforms to be created by specifying harmonic amplitudes and phase angles with respect to the fundamental. It also offers an arbitrary waveform data entry mode that allows individual data points to be specified.

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Figure 4-8: Custom Waveform Creation with GUI Program

Once downloaded, waveforms remain in non-volatile memory and will be visible in the

PROGRAM menu for selection. The user can assign a 12-character name to each custom waveform. Avoid using any of the standard waveform names (SINE, SQUARE or CLIPPED) as these names will not be accepted.

Waveforms may be deleted using the IEEE-488 or RS232C interface as well. Custom waveforms cannot be deleted from the front panel however to avoid accidental erasure.

4.4.3 Waveform Groups

Waveform groups extend the number of available custom waveform to 200. Each group can contain up to 50 user-defined waveforms. Groups are numbered 0 through 3 and may be selected only by using the included Gui. To switch waveform groups, proceed as follows:

1. Establish a connection to the unit using RS232 or GPIB interface with the provided Gui.

Send the command: PONS:WGR x, where x is 0-3 depending on which group is to be selected.

2. To activate your new selection, YOU MUST CYCLE THE POWER so the AC source reinitializes. If the source is operated over the bus, a IEEE-488 Device Clear or reset command

(*RST) command will have the same effect.

The new wave group will be active after you turn the power to the unit back on.

4.4.4 RMS Amplitude Restrictions

The output of a sine wave may be programmed to the full rms value of the voltage range selected. If the AC source is in the 300 V range, the maximum programmable rms voltage is 300

Volt. If a custom waveform is used however, the maximum programmable rms voltage may be less than the maximum range value. The voltage range limit is based on the use of a sine wave with a 1.414 crest factor. A 300 V rms sine wave has a 424 Volt peak voltage. The AC source has a maximum peak voltage capability that is determined by the selected voltage range. If the user selects a custom waveform with a crest factor that is higher than 1.414, the peak voltage would exceed this maximum if the rms voltage were to be programmed at 300 V rms.

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The MX Series power source automatically limits the maximum allowable programmed rms voltage of any custom waveform by calculating the crest factor of the selected waveform and controlling the rms limit accordingly. Thus, each custom waveform may have a different maximum rms value. The 1Pi controller will prevent the user from programming the rms voltage above this limit. If a value is entered in the PROGRAM menu above this value, a “Voltage peak error” message is generated.

Figure 4-9: Waveform Crest Factor Affects Max. rms Voltage

The figure shown here illustrates the relationship between the crest factor of the wave shape (or its “peakiness”) and the maximum peak voltage allowed for a given voltage range. Since the peak voltage cannot exceed the AC source’s capabilities, the programmable rms voltage has to be restricted, in this case to only 167.8785 volt for the waveform on the left. The sine wave on the right can be programmed to the full 300 V rms as this still falls within the same peak voltage limitation of the AC source.

If the MX Series is used over the bus, the “:VOLT? MAX” query command can be used to determine the maximum allowable RMS voltage for the selected waveform. Using the returned value as part of a program will prevent range errors.

4.4.5 Frequency Response Restrictions

The user may create a waveform that contains any number of harmonic frequencies of the fundamental. The AC Source itself however has a finite signal bandwidth and will attenuate higher frequency components of the signal. To limit the maximum frequency component of the output signal, the 1Pi controller automatically applies a band-pass filter to all custom waveforms as they are downloaded. The controller implements the following process for user defined waveforms:

Each down loaded waveform will have a computed frequency limit that is less than or equal the maximum frequency limit of the AC source. The frequency limit is a function of the harmonics content of the waveform and will follow the equation below.

Fmax h

= Fmax/(level * h n

)

If Fmaxh is below the minimum frequency limit, the waveform will be rejected at down load time and the label will be deleted from the waveform catalogue.

If the MX Ser ies is used over the bus, the “:FREQ? MAX” query command can be used to determine the maximum allowable fundamental frequency for the selected waveform. Using the returned value as part of a program will prevent range errors.

Limits assume a program of full-scale voltage. No adjustments for voltage setting are made below the full-scale value.

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Waveform selection and frequency programming will be subject to the above limit. An error message will be generated to reflect this type of error:

"22,Waveform harmonics limit"

Transient editing will also generate the above error during keyboard entry. Remote transient entry will not check for the error until transient execution.

4.4.6 Switching Waveforms

Waveforms can be switched as part of the transient system. Each transient type setup menu has a FUNCTION field. This field allows selection of any of the standard or custom waveforms available in the selected group. Refer to the section on transients for more details on using transient list to switch output waveforms.

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4.5 Standard Measurements

Standard measurements are always available through the MEAS key on the front panel. These measurements are spread across two screens to enhance readability. Switching between these screens can be done by successively pressing the MEAS button on the front panel. This will cause the screen to cycle through all available measurement screens.

4.5.1 Standard Controller Measurements

For MX Series power sources with the

–1 standard controller, the following two measurement screens are available:

Mode

VOLTAGE

CURRENT

FREQUENCY

POWER

VA POWER

PEAK CURR

POWER FACT

CREST FACT

AC DC

MEASUREMENTS 1

AC rms voltage

AC rms current

Frequency

DC Voltage

DC Current n/a

Real power

MEASUREMENTS 2

Apparent power

Highest AC current power power

Highest DC current found

Power factor

Crest factor found n/a n/a

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4.5.2 3Pi Controller Measurements

For MX Series with the -1Pi controller, the following four measurement screens are available:

Mode

VOLTAGE

CURRENT

FREQUENCY

POWER

VA POWER

PEAK CURR

POWER FACT

CREST FACT

VOLT THD

CURR THD

INST PK CURR

AC DC

MEASUREMENTS 1

AC rms voltage DC Voltage

AC rms current

Frequency

Real power

MEASUREMENTS 2

DC Current n/a n/a

Apparent power

Highest AC current found

Power factor power

Highest DC current found n/a n/a Crest factor

MEASUREMENTS 3

Voltage distortion

Current distortion n/a n/a

Instantaneous peak current

Phase angle

Highest DC current found n/a

AC+DC

AC rms voltage

AC rms current

Frequency n/a

Apparent power

Highest AC current found

Power factor

Crest factor

Voltage distortion

Current distortion

Instantaneous peak current

Phase angle PHASE

Note: The V and I distortion calculations are based on H2 through H50 with the RMS current in the denominator. Note that some definitions of THD use the fundamental component (H1) as the denominator. This may result in different readings between instruments depending on the implementation chosen.

Measurements are always running in the background. When the user selects a measurement screen for display, the AC source first updates all the measurement parameters before displaying the requested screen. This process may take up to a second. Consequently, pressing the MEAS key may not always bring up the selected screen immediately. There will be a perceptible delay. This will prevent the screen from appearing with invalid or blank readouts.

The measurement method for voltage and current will depend on the power source’s operating mode. The following table shows the return value type (rms or average) and method of coupling when the measurement command is initiated with a different extension at various operating modes (AC, DC or AC + DC).

Operating Mode Measurement

Extension and Coupling

AC

DC

Coupling

AC rms rms

AC

DC rms rms

DC

AC + DC rms average

DC

4.5.3 Accuracy Considerations

Any measurement system has a finite accuracy specification. Measurement specifications are listed in Section 2. When using the AC source for measurement purposes, always consider these specifications when interpreting results. Measurement inaccuracies become more pronounced

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California Instruments as the signal being measured is at the low end of the measurement range. This is particularly relevant for low current measurements. The MX Series is a high power AC and DC source optimized for providing and measuring high load currents. When powering low power loads, measurement inaccuracies on rms and peak current measurements will greatly affect derived measurements such as power, power factor and crest factor.

The measurement system on the MX15 Series uses a data acquisition system with a 48 kHz bandwidth. This means that high frequency components of the measured signal are filtered out.

Any contribution to the rms value of voltage and current above this cutoff frequency will not be reflected in the MX Series measurements. When using an external measurement reference, this may account for discrepancies in readings.

4.6 Advanced Measurements [1Pi Controller only]

The 1Pi controller offers advanced power analyzer measurement capabilities. They include

Harmonic Analysis and Waveform Acquisition, These functions are only available using the provided Gui program since they cannot be graphically displayed on the two line dislay.

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4.7 Transient Programming

4.7.1 Introduction

Transient programming provides a precise timing control over output voltage and frequency changes. This mode of operation can be used to test a product for susceptibility to common AC line conditions such as surges, sags, brownouts and spikes. By combining transient programming with custom waveforms [1Pi Controller only], virtually any AC condition can be simulated on the output of the AC source.

The default voltage mode is FIXED which means the output voltage is constant and remains at the level set by the user. Changes made to the output voltage made from the PROGRAM menu take effect immediately. In front panel operation mode, the voltage and frequency slew rates

(rate of change) are always at their maximum of 1E9 V/s and 1E9 Hz/s. Slew rate programming is only possible over the IEEE-488 or RS232C bus. On power up, the AC source always reverts to the maximum slew rate for both voltage and frequency.

4.7.2 Using Transient Modes

The voltage can be programmed in the following transient operating modes:

STEP causes the output to permanently change to its triggered value.

PULSE causes the output to change to its triggered value for a specific time, as determined by the Pulse menu parameters.

LIST

FIXED causes the output to sequence through a number of values, as determined by points entered in the List menu. disables transient operation for the selected function.

Note: Only list transients can be programmed from the front panel. All others must be done using the provided Gui program.

4.7.3 Step Transients

Step transients let you specify an alternate or triggered voltage level that the AC source will apply to the output when it receives a trigger. Because the default transient voltage level is zero volts, you must first enter a triggered voltage before you can trigger the AC source to change the output amplitude. Step transients can only be programmed through the bus, not the front panel.

Refer to the SCPI Programming Manual for more information about programming Step transients and triggers.

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4.7.4 Pulse Transients

Pulse transients let you program the output to a specified value for a predetermined amount of time. At the end of the Pulse transient, the output voltage returns to its previous value.

Parameters required to set up a Pulse transient include the pulse count, pulse period, and pulse duty cycle. An example of a Pulse transient is shown in Figure 4-10. In this case, the count is 4, the pulse period is 16.6 ms or 60 Hz and the duty cycle is 33%.

Figure 4-10: Pulse Transients

Note that Pulse transients can only be programmed over the bus, not the front panel. Refer to the

SCPI Programming Manual for more information about programming Pulse transients and triggers.

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4.7.5 List Transients

List transients provide the most versatile means of controlling the output in a specific manner as they allow a series of parameters to be programmed in a timed sequence. The following figure shows a voltage output generated from a list. The output shown represents three different AC voltage pulses (160 volts for 33 milliseconds, 120 volts for 83 milliseconds, and 80 volts for 150 milliseconds) separated by 67 millisecond, zero volt intervals.

Transient list programming is supported from the front panel and may be accessed by selecting the TRANSIENTS menu. Transient lists can also be programmed over the bus. Refer to the

SCPI Programming Manual for more information about programming List transients and triggers over the bus.

MX15

Figure 4-11: List Transients

The list specifies the pulses as three voltage points (point 0, 2, and 4), each with its corresponding dwell point. The intervals are three zero-voltage points (point 1, 3, and 5) of equal intervals. The count parameter causes the list to execute twice when started by a single trigger.

The output transient system allows sequences of programmed voltage and or frequency changes to be executed in a time controlled manner. Changes can be either step changes (maximum slew rate) or ramps (specified slew rates).

The section provides some examples of programming output changes (transients). Transients are defined as a series of numbered steps in a list. The list is executed sequentially. Each step has a number of fields that can be set by the user:

Voltage, Voltage slew rate, Frequency, Frequency slew rate, Current, Function, Dwell time, Trigger out.

The voltage, current and frequency settings are the same as one would do from the setup screen using the shuttle knob or keypad. At each step, the output will be set to the specified voltage, current and/or frequency. The rate of change for voltage and frequency is determined by the slew rate set. Current slew is fixed at MAX and cannot be programmed.

If the voltage is changed from 10 Vac to 20 Vac and the V slew is set to 100 V/sec, the voltage will ramp from 10 to 20 Vac in 100 ms. ( [20 - 10] / 100 = 0.1 sec). The dwell time is the time the output will remain at this setting. In this example, it should be set long enough to reach the final programmed value of 20 Vac, e.g. it should be at least 0.1 sec. If not, the voltage will never reach the final value of 20 Vac before the next step in the transient list is executed. The dwell time may be set longer than 0.1 sec in this example. If for example the dwell time is set to 1.0 sec, the voltage will ramp from 10 Vac to 20 Vac over a 0.1 sec period and then remain at 20 Vac for 0.9 sec.

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Once the dwell time set for a step in the list expires, the next step is entered (if available, if not, execution stops and the output remains at the final values set in the last step of the list.)

Note that while there are parameters for both voltage and frequency level and slew rates, there is only one dwell time, which applies to each step in the transient list.

Front panel entry only supports the LIST mode of operation. For Pulse and Triggered modes, the remote control interface must be used.

When entering transient lists, each list must be entered sequentially starting with step #0. If a list point is not yet set, the step number cannot be increased past it.

The following sample illustrates the use of transient system to program controlled output changes.

MX15

Figure 4-12: Sample Transient Output Sequence

This output can be accomplished using the following transient list.

Volt VSlew Frequency FSlew Step #

(data point)

0

1

2

3

6

7

4

5

70.00

110.00

130.00

90.00

90.00

110.00

88.00

110.00

MAX

100.0

MAX

53.3

MAX

MAX

MAX

MAX

360.0

440.0

240.0

240.0

460.0

400.0

400.0

400.0

Table 4-2: Sample Transient List

MAX

MAX

800.00

MAX

MAX

MAX

MAX

MAX

Dwell

0.100

0.900

0.250

0.750

1.000

0.800

0.200

1.000

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4.7.6 Switching Waveforms

The FUNCTION field available in each transient list event setup menu may be used to dynamically switch waveforms during transient execution. This allows different waveforms to be used during transient execution. Waveforms may be switched without the output of the source being turned off. For three phase configurations, each phase has its own waveform list so different waveforms may be programmed on different phases during transient execution.

Figure 4-13 illustrates the concept of using different waveforms at different steps in a transient list. In this case, the change was programmed to occur at the zero crossing. Any phase angle can be used to start the transient execution however. To keep the phase angle synchronization, the dwell times have to be set to an integer number of periods. Over long periods of time, phase synchronization may get lost due to timing skew between the waveform generator and the transient state machine.

Figure 4-13: Switching Waveforms in a Transient List

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4.7.7 Transient Execution

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Figure 4-14: TRANSIENT Menu

A transient list can be executed from the TRANSIENT menu. To start a transient list, position the cursor on the TRAN ST field as shown in Figure 4-14 and press the ENTER key. Transients may be aborted by pressing the ENTER key again while on the same field as the field changes to

ABORT while a transient execution is in progress. For short duration transients, this will likely not be visible, as the transient will complete before the screen is updated. Longer duration transients however may be aborted in this fashion.

4.7.8 Saving Transient List Programs

When the AC source is turned off, the transient list that was programmed is not automatically retained. Thus, if you turn the unit off, you will loose your programmed transient list. However, transient programs may be saved in nonvolatile memory for later recall. This allows multiple transient list programs to be recalled quickly without the need to enter all parameters each time.

Transient lists are stored as part of the overall instrument front panel setup in any of the available setup registers.

To save the transient list you created in the previous example, proceed as follows:

1. Press the Menu key repeatedly until the REGISTERS / CONFIGURATION menu is displayed.

2. Move the cursor to the REGISTERS entry and press the ENTER key.

3. The cursor will default to the SAVE REGISTER # position. Enter a number from 1 through 15 and press the ENTER key. DO NOT USE REGISTER 0 (REG0) as it is reserved for poweron setting recall and does not include a transient list.

4. A message will appear indicating that the front panel settings and the transient list data have been saved in the setup register you selected.

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5 Principle of Operation

5.1 General

An explanation of the circuits in the MX15 Series is given in this section. Refer to Figure 5-1 for

a basic functional block diagram of the system. Figure 5-2 shows a more detailed system

interconnect for a MX15-1 single-phase output unit.

5.2 Overall Description

Figure 5-1: MX Series Functional Block Diagram

Three-phase input power is routed to the back of the cabinet to a fuse holder terminal block. The rear access panel has to be removed to gain access to the AC input connection fuse block. From the fuse block, the AC input is connected to the three-phase input transformer primary. The input transformer provides the required isolation between input and output of the MX and accommodates various input voltage ranges by employing multiple taps. Three sets of singlephase output secondaries are provided by the transformer to produce three 140 VAC unregulated output AC buses. Each of these outputs is fed into the power module. The power module is located in the middle of the MX chassis and can be pulled out from the front after removing the front access panel and disconnecting the power input and output wiring.

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The power module contains a three-phase PFC power input module. The PFC module acts as a boost converter using a PWM converter topology to generate a 450 VDC regulated bus. A bank of high capacity electrolytic capacitors for each DC bus ensures ride through capability during brown-outs and high current demands.

The DC bus provides power to the AC amplifier. Each amplifier in turn consists of four amplifier modules labeled #1 (A1, A2) and #2 (A1, A2). These four amplifier modules are identical and interchangeable but all four must always be present.

The output of the amplifier can be either AC, DC or a combination of AC and DC. The mode is controlled by the CPU controller based on user selection. All four amplifier modules within each power module are controlled by a single Modulator board. The modulator board contains a high frequency PWM modulator and additional control circuitry.

The CPU controller / oscillator assembly generates the reference waveforms and provides frequency, amplitude, and impedance control. A current and voltage sense board is located at the left bottom of the unit (looking from the rear) and is used to sense all output current and voltage for both control and measurement purposes. The current sensor board, in conjunction with the CPU controller, also supports the programmable RMS current limit function.

The system interface board controls all interaction between controller, power modules and current sensor board. The system interface board is located in the top compartment of the MX15 along with the controller.

Low voltage Power to the controller, amplifiers, system interface board and sensor board is provided by a separate Low Voltage DC supply (LV Supply). This LV Supply takes three-phase

AC input directly from the AC input line through circuit breaker CB1 located on the front on the

MX15. This circuit breaker functions as the main power on/off switch of the MX15 unit.

The LV Power Supply board converts the AC input into a number of isolated low voltage regulated DC supplies that are distributed throughout the MX15 chassis. The LV power supply also supplies coil power for all contactors, including the AC mains contactor (K2). A small fan is located near the LV Supply to provide sufficient cooling of the supply and the other modules in the top section of the MX.

The individual assemblies are described in more detail in the following paragraphs. Refer to

Figure 5-1 for an overall functional block diagram.

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5.3 Controller Assembly

The Controller Assembly is located in the top section of the MX15 unit. To access this assembly, the top cover needs to be removed. The controller contains the main oscillator, which generates the sine wave signal setting the frequency, amplitude and current limit level. It also senses the output voltage to provide closed loop control of the output. The controller also handles all user interface and remote control related tasks.

5.3.1 CPU Controller

This board assembly, A2, consists of the components for the CPU (DSP), generating the Phase waveform signal to the power amplifier, programmable impedance (MX15-1Pi model only) and all of the program, waveform and data memory. In addition, the waveform board contains the circuits for all measurements. The clock and lock circuit required to support the clock and lock mode of operation of multiple MX units is also on this board assembly.

5.3.2 Keyboard / Display Board

The keyboard/display assembly is assembly A5. It is mounted to the front panel and holds the 21 rubber keys. It also has the LCD display. A shaft encoder is mounted on the board that is used as a shuttle input to allow slewing of setup parameters. If the MX15 system is used over one of the remote control interfaces, the keyboard functions can be locked out by asserting the

REMOTE state. See the MX Series Programming Manual (P/N 9003-961) for details.

5.3.3 GPIB / RS232 or GPIB / RS232 / USB / LAN IO Board d

This board assembly is identified as A1. It has the IEEE 488, RS232 and USB transceivers and optionally an Ethernet interface (-LAN option). USB and LAN are available on top assembly

7005-403 MX models only. It also has isolators to provide safety isolation for both interfaces and additional user accessible I/O lines. Additional user accessible inputs and outputs available through this assembly are:

Trigger Input BNC

Trigger Output BNC

Function Strobe BNC

Remote Inhibit (terminal strip)

External Sync (terminal strip)

Clock BNC (option)

Lock BNC (option)

Output Status (Available on top assembly 7005-403 only.)

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Figure 5-2: MX Series Detailed Block Diagram

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MX15

Figure 5-3: Power Module Detailed Block Diagram

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5.4 System Interface Board

The System Interface Board is located in the top section of the MX15 unit. To access this assembly, the top cover needs to be removed. The System Interface board, A3, receives the oscillator signal from the CPU controller assembly for all phases and passes it through to the amplifier whose gains are controlled by a signal from the over current circuit. The over current circuit senses the RMS value of the current. If the load current exceeds the programmed value, the output of this sensing circuit reduces the amplitude of the oscillator drive signal. The output of the unit then becomes a constant current output, with the output voltage dropping as the load increases.

The System interface also monitors a variety of status signals from the amplifiers. This includes

PFC good, over temperature signals and DC bus regulation good signals. If any status signal is false, the system interface board will shut down the MX. At power on, all status signals have to return good (TRUE) or the MX system power up sequence will be halted.

Finally, the System interface assembly also routes the required system interface bus signals between multiple MX15 chassis for multi-box configurations (MX30/2 and MX45/3). A DB-37 to

DB-37 system interface cable is used to connect two or more MX15 units in a multi-box configuration. Each MX15 provides two sets of system interface connectors on the rear-panel.

One is the master out (unit with CPU controller assembly installed), the other the Auxiliary in.

((unit without CPU controller or with CPU controller disabled.) The CPU controller can be disabled using the internal DIP switch located on the GPIB / RS232C / USB IO assembly.

(Requires removal of the top cover).

5.5 Current / Voltage Sensor Board

The current and voltage sensor board, A4, senses the output current and voltage of the amplifier and feeds this information back to the system interface board. These same signals are also used by the controller for all measurement functions. Voltage sense is accomplished either internally or externally. For best voltage regulation at the EUT, external sense connections should be made using the External Sense terminal block located at the top of the back-panel.

Alternatively, internal sense mode may be selected. In this case, the voltage is sensed at the sensor board.

5.6 Low Voltage Power Supply

The Low Voltage power supply is mounted beside the system interface board in the top section of the MX15 chassis. This assembly generates all required low voltage DC outputs. These outputs from the LV Power supply provide analog and logic power to all the modules. a) +/- 19 V to the System Interface board and power modules. b) + 9 V to the oscillator. c) + 24 V to all contactors and LV cooling fan. d) Isolated + 8 V for the GPIB/RS232/USB board.

Two green LED’s on the system interface board are lit when the ± 15 V and ± 19 V are in regulation. If an overload condition causes the output to drop more than 10% or the output has failed, the corresponding LED will extinguish. This feature is helpful in troubleshooting the unit.

See Service section 6.

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5.7 Power Module

Each MX15 chassis accommodates one power module. This power module is located in the center of the chassis and can be removed from the front after removing the front cover. Each power module is fully self-contained and forms a complete AC to AC or AC to DC converter.

The power module is depicted in Figure 5-4.

MX15

Figure 5-4: Power Module Layout

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5.7.1 PFC Input Power Converter

The PFC section is located at the bottom of each power module. AC power enters the power module at the PFC input section. The PFC section using a PWM boost converter to turn the unregulated three phase 140 V AC into a regulated ± 225 V DC bus. A bank of capacitors is used to provide ride-through and to support high peak current demands from the amplifier boards. The PFC PWM circuit drives a set of three high capacity IGBT's. These IGBT's connect directly to the DC bus bars, which connect the PFC output to the Amplifier boards.

The condition of the PFC section is constantly monitored and reported to the system interface board. If the DC bus goes out of acceptable operating range, a fault is generated. Furthermore, in any of the three AC input phases fails, the MX will shut itself down.

5.7.2 Modulator Board

The modulator board is located directly above the PFC board and next to the four board Amplifier stack. The modulator board accepts an oscillator output reference signal as input and drives the four amplifier boards using a high frequency PWM technique. The modulator has the ability to drive the amplifiers in either parallel or series configuration, thus producing either a high (300

Vac ./ 400 Vdc) or low (150 Vac / 200 Vdc) output voltage range.

The modulator contains several feedback loops that control the current sharing and output regulation of the four power amplifier boards. The Modulator boards connect to the System interface through a 50 pin ribbon cable located at the left front of the power module.

5.7.3 Amplifier Boards

The Amplifier boards are each attached to a heat sink and stacked on top of each other at the top portion of the power module enclosure. Sets of two boards are held together by a bracket which screws into the back wall of the power module enclosure. Power to each amplifier board is supplied from the PFC section through a set of DC bus bars. Each amplifier board connects to the modulator board via a small ribbon cable. Each Amplifier board has four outputs (A+. A-, B+ and B-). These four outputs connect to a set of Inductor boards using stranded wires with

Anderson style connectors. The connection between the Amplifier boards and the Inductor boards is specific and should not be reversed or damage could result. The output wire connectors of each amplifier board are color coded to help identify the correct connections. The connections between the Modulator board and the Amplifier boards are one to one. (Connectors line up with amplifier boards).

The layout of the Amplifier board is shown in Figure 5-5.

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Figure 5-5: Amplifier Board Layout

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5.7.4 Filter Boards

A set of two identical inductor boards is located behind the Modulator board and next to the four amplifier boards. One filter board handles the "A" output, the other handles the "B" output. In addition to the filtering function performed by these boards, the inductor boards also contain current sensors that are used in the feedback loop of the amplifier. The output of these current sensors is routed to the modulator board to regulate current sharing and peak current limiting.

5.7.5 Fan Supply Board

The Fan Supply board is located in the wind tunnel of the PFC section at the bottom of the power module. This board provides variable speed control for the dual fans of the power module. Fan speed is a function of the load current sensed. This provides for lower levels of audible noise during minimal load conditions.

5.7.6 Output Snubber Board

A small output snubber board is attached to the output terminals of each power module. This snubber provides the required operating stability of the amplifiers.

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CAUTION

VOLTAGES UP TO 480 VAC AND 500 VDC ARE PRESENT IN

CERTAIN SECTIONS OF THIS

POWER SOURCE. THIS EQUIPMENT GENERATES

POTENTIALLY LETHAL VOLTAGES.

DEATH

ON CONTACT MAY RESULT IF PERSONNEL FAIL TO

OBSERVE SAFETY PRECAUTIONS. DO NOT TOUCH

ELECTRONIC CIRCUITS WHEN POWER IS APPLIED.

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6 Calibration

The Routine Calibration should be performed every 12 months. Non-routine Calibration is only required if a related assembly is replaced or if the periodic calibration is unsuccessful. Calibration of the MX system can be performed from the front panel or over the bus. The MXGUI program provides several calibration screens for this routine calibration but not for non-periodic calibration. This section covers calibration from the front panel. Refer to the MXGUI on line help for information on using the MXGUI program to perform routine calibration.

Full-scale output calibration is done using the internal measurement system. As such, it is important to calibrate the AC and DC voltage measurements before performing an AC and DC full-scale output calibration.

Note: Perform the Measurement calibration first.

The cardinal calibration points used during calibration are chosen to obtain optimal performance at the typical operating points of the MX Series. If the typical application in which the MX system is used is unusual, it may be better to calibrate it at different operating points than the ones used in this manual. Also, if the required load values for current calibration are not available, the programmed voltage may be adjusted to obtain the approximate current (typically close to maximum available current per phase).

6.1 Recommended Calibration Equipment

Digital Multimeter:

1 mOhm Current Shunt:

Load Bank:

Fluke 8506A or equivalent / better.

HP 34401A or equivalent / better

Isotek Model RUG-Z-R001-0.1.

Various high power load resistors or a resistive load bank will be needed. (E.g. Avtron) Size of the load bank depends on model and phase mode. A load is required to perform the current measurement calibration near full scale. Current measurement calibration should be done on the lowest available voltage range.

The accuracy and value of the load resistor is not critical as long as the current drawn is sufficient to operate the AC Source in the upper current range (80-100 %). Suggested values of

load bank settings are shown in Table 6-1.

Optional. PC with CI MXGUI:

For MX15-1Pi programmable Impedance calibration only:

Digital Phase Meter: Krohn-Hite model 6610 or 6620 (GPIB) or equivalent.

0.02° accuracy, 0.01° resolution or better.

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6.2 Front Panel Calibration Screens

The calibration screens for output or measurement calibration can be selected from the OUTP

CAL and MEAS CAL screens.

To select the OUTPUT CALIBRATION screen press ENTER on the OUTP CAL field. This will bring up the CAL PWORD screen. To prevent unauthorized access to calibration data, a password must be entered to access any calibration screen. The calibration password is always

"5000" and may be entered using the numeric keypad. Once entered, the calibration screens remain accessible until the MX unit is powered down.

Type 5000 and press the ENTER key to show the OUTPUT CALIBRATION screen.

To select the MEASUREMENT CALIBRATION screen, follow the same steps as outlined above but select the MEAS CAL entry instead of OUTP CAL. If another CALIBRATION screen has been accessed since power-up, no password is needed. Otherwise, enter the same password as indicated above.

MX15

Figure 6-1: Calibration Setup MX45-1 (Rear view)

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6.3 Routine Measurement Calibration

The MX Series controller measures voltage and current by digitizing both voltage and current waveforms on each available output phase. This data is subsequently processed and use to calculate all measurement parameters such as VRMS, IRMS, Power, VA, Frequency etc. To calibrate all measurements, only the voltage and current measurement need to be calibrated specifically. All other measurements are derived from these.

Connect the test equipment to the power source as shown in Figure 6-1. If the power system is a multi-cabinet system with one controller, the DVM for calibrating the measurement voltage should always be connected to the Remote Sense connector on the Master cabinet.

Note: The Fluke 8506A Digital Multimeter must be used for the following calibration. The

8506A must be set to the AC HI ACCUR mode for all AC measurements.

The shunt must be connected to the power source as shown in Figure 6-1. If the Current

Measurement can’t be successfully performed, adjust the Current Measurement Pot on the

System Interface board. This adjustment is described in the Non-routine Calibration section of this manual. If the DC current measurement displays more than 70 counts on the display, perform the non-routine current monitor adjustment.

Connect the load to the output. Use the 1 mOhm current shunt in series with the load to measure the AC and DC load current. When programming a DC load always program the output voltage to 0 volts before changing the output load. This will prevent load switch contacts from being damaged.

To calibrate all measurement functions, the desired value for the measurement value of current or voltage must be entered for the corresponding calibration value. Make the indicated adjustments by typing in the desired display value. This should be the value indicated by the external DVM. If a 1 mOhm current shunt is used for current, 30 mV represents 30 amps.

The Calibration Load Table shows required load bank settings for the current measurement calibration procedure. The following text is a detailed explanation of the procedure.

Note that the voltage measurement calibration is only required on the high voltage range. The same voltage measurement calibration coefficients are used on both voltage ranges.

Note that the current measurement calibration is only required on the low voltage range

– maximum available current range. The same current measurement calibration coefficients are used on both voltage ranges.

PARAMETER POWER SYSTEM

MX15-1 / MX15-1Pi MX30/2-1(Pi) MX45/3-1(Pi) Model --->

Lowest Range

150 VAC / 200 VDC

AC Current Full Scale

DC Current Full Scale

300 VAC / 400 VDC

AC Current Full Scale

DC Current Full Scale

1.0

, 14.4 kW

2.67

, 9.6.kW

4.0

, 14.4 kW

10.67

, 9.6.kW

0.5

, 30KW

1.33

, 7.5KW

2.0

, 30KW

5.3

, 7.5KW

0.33

, 44 kW

0.9

, 28.5 kW

1.2

, 44 kW

3.6

, 28.5 kW

Table 6-1: Calibration Load Values

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6.3.1 Measurement Cal

AC Volt Full-scale:

AC Current Full-scale:

DC Volt Full-scale:

DC Current Full-scale:

Program the output to the 300 VAC range. Close the output relay. Program the output to 240 VAC and 60 Hz. Go to the

MEASUREMENT CALIBRATION screen. Enter the actual AC output voltage for the VOLT FS parameter and press the

ENTER key. Save this value by pressing the SET key.

Note: This process may take as long as a few minutes to complete after the enter key is pressed.

Apply a load to the output. Refer to Table 6-1. Program the output to 120 VAC on the 150 VAC range and 60 Hz.

Observe the actual output current and enter this value for the

CURR FS parameter. Press the ENTER key. Save this value

by pressing the SET key.

Program the output to the 400 VDC range. Close the output relay. Program the output to 320 VDC. Go to the

MEASUREMENT CALIBRATION screen. Enter the actual AC output voltage for the VOLT FS parameter and press the

ENTER key. Save this value by pressing the SET key.

Note: This process may take as long as a few minutes to complete after the enter key is pressed.

Apply a load to the output. Refer to Table 6-1. Program the output to 160 VDC on the 200 VDC range.

Observe the actual output current and enter this value for the

CURR FS parameter. Press the ENTER key. Save this value

by pressing the SET key.

6.3.2 Measurement Calibration Summary

The following Table is a summary of the preceding calibration steps. The value indicated by the

External DVM is called V

AC

or V

DC

. The current measured by the current shunt is called I

AC

or

I

DC

.

TITLE

AC MODE

AC Volt Fullscale

AC Current Fullscale

DC MODE

DC Volt Fullscale

DC Current Fullscale

PROGRAM/LOAD PARAMETERS PARAMETER

300 VAC Range, 240 VAC, 60 Hz, no load

VOLT FS

CURR FS 150 VAC Range, 120 VAC, 60 Hz, full load to 90% of max current range.

400 VDC Range, 320 VDC, no load VOLT FS

200 VDC Range, 160 VDC, full load to

90% of max current range.

CURR FS

Table 6-2: Measurement Calibration Table

ADJUST TO

V

AC

I

AC

V

AC

I

AC

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6.4 Routine Output Calibration

For best results, it is recommended to perform the measurement calibration procedure first. See

section 6.3.

Follow the steps outlined in this section to perform a routine output calibration. Table 6-3 shows the individual calibration points in a summary format. The following text is a more detailed explanation of the procedure.

Setup:

Connect the test equipment to the power source depending on model configurations as shown in

Figure 6-1. Note that no load is required for output calibration.

6.4.1 Output Cal

300 VAC Range DC Zero:

300 VAC Range Volt Full-scale: Program the output to 240.0 volts and 60 Hz. Once the output settings are made, turn on the ALC mode and allow the output on all phases to settle. Next, proceed to the output calibration screen. Select the VOLT FS parameter and enter the set voltage in the full-scale calibration window followed by the

ENTER key. Save this value by pressing the SET key.

400 VDC Range Volt Zero:

Program the output to the 300 VAC Range by pressing and selecting the 300 Range with the shuttle. Go to the OUTPUT

CAL screen, select the VOLT ZERO parameter and adjust the output to 0.0 ± 0.005 VDC. Save this value by pressing the

SET key.

Press the PROGRAM key. Press the PROGRAM key and select the 400 VDC Range. Program 0.0 VDC. Go to the

OUTPUT CAL screen and adjust the VOLT ZERO for 0.0 ±

0.005 volts DC on the output. Save this value by pressing the

SET key.

6.4.2 Output Calibration Summary

The following Table is a summary of the preceding calibration steps. Note that Series II MX models have fewer calibration coefficients.

Program the following values in the table and make the adjustments in the OUTPUT

CALIBRATION screen. Select the phase to be calibrated by pressing the PHASE key.

TITLE

300 VAC range DC Zero

300 VAC range Volt FS

300 VDC range DC Zero

PROGRAM VALUES CALIBRATION VALUE

300 VAC range, 0.0 V VOLT ZERO

240.0 V, 60 Hz VOLT FS

400 VDC range, 0.0 V VOLT ZERO

Table 6-3: Output Calibration Table

– MX15 Series

ADJUST TO

0 ± 15 mV DC

240

0.05 VAC

0 ± 15 mV DC

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6.5 Non-Routine Calibration

The non-routine calibration may involve removing the front, rear, or top cover of the power source. Use extreme caution when performing any of these tasks while the system is connected to AC mains and/or powered up.

6.5.1 Power Source Gain Adjustment

For any MX configuration that requires two or more amplifiers to be operated in parallel for increased current output, the amplifier gains have to be matched as closely as possible to ensure equal current sharing. If an unbalance exists between amplifier outputs, one or the other amplifier will deliver more current and may run into its current limit protection before full output power can be attained.

This procedure details the gain adjustment. Generally, MX units are shipped with the gains already set correctly so this task should only be undertaken if an amplifier has been replaced or if two MX units are to be combined that were not originally shipped from the factory as such. In the case of the MX15, this will only be necessary if a second or third MX15 is purchased and will be added in parallel to another MX15.

To make this adjustment the front cover must first be removed in order to get access to the power module output terminals. Proceed as follows:

1. Shut off all power to the cabinets. Disconnect the two wires going to Terminal 6 and Terminal

7 on the right front of the power module. Do this to the module(s) in the auxiliary cabinet(s) only. Place some temporary insulation over the lug ends.

2. Connect a DMM between terminals 6 and 7 on the module in the master cabinet. Power up the cabinet. Set the controller to the 300V range, program 230V at 60Hz. Enable the output by pressing the OUTPUT ON/OFF key. Measure the module output voltage and write it down. Press the OUTPUT ON/OFF key to disable the output.

3. Move the DMM leads to the module terminals 6 and 7 in the auxiliary cabinet. Press the

OUTPUT ON/OFF key again to enable the output. Verify the module output is within

50mVolts of the module in the master cabinet. If it is not, adjust the pot behind the hole in the lower left corner of the module so the output matches the master output within 50mVolts.

Press the OUTPUT ON/OFF key to disable the output.

4. If power system under adjustment is an MX45/3, then repeat step 3 above for the second auxiliary cabinet.

5. Power down system and replace the wires to terminals 6 and 7 on the auxiliary power module(s).

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6.5.2 Output Impedance Calibration (MX15-1Pi only)

For the output impedance calibration, two HP 34401A DMM's or equivalent must be used. The following modes must be programmed: 6 digits, AC Filter, slow: 3 Hz and 6 digits. One DMM is used to measure the output voltage, one to measure the load current using a suitable CT. The calibration should be done for each phase individually. Furthermore, an accurate phase meter

with at least 0.01° resolution is needed. (See equipment list section 6.1). The reference input of

the phase meter must be connected to the LOCK output of the controller at the rear panel. This is a square wave TTL signal. The input of the phase meter must be connected at the output of the phase being calibrated. The phase meter is used to determine the phase shift between no load and full load conditions (



).

1. Program the power source to 230.0VAC and 50Hz. Turn off the ALC mode from the

CONTROL screen. The ALC must be off to use programmable impedance.

2. Program the output impedance resistance and inductance to the lowest values from the

CONTROL screen. This will be the IMP. REAL MIN and IMP. REACT MIN values that have been set in the OUTPUT CAL screen.

3. Measure the output voltage of the power source with no load and record this value (V

NL

).

4. Using a resistive load bank, load the output of the power source to about 48 ± 9 amps.

Measure the output voltage of the power source under load and record this value (V

L

). Also measure the load current and record this value. (I).

5. Calculate the resistive and inductive component R and L using the formulas shown in Table

6-5.

6. Enter these values, in the OUTPUT CAL screen for the IMP. REAL MIN and IMP. REAC MIN value respectively. Make sure the correct phase is selected or use the PHASE key if not.

7. Remove or turn off the load.

8. From the CONTROL screen, select OUTPUT IMPEDANCE. Program the output inductance to 200 uH and the resistance to 200 mOhms.

9. Select the Calibration, Output screen and move the cursor to the IMP REAL FS field.

Measure the R and L by removing and applying the load as described before and calculating

the R and L using the formulas in Table 6-4.

Adjust the resistive output impedance using the shuttle until the measured output is as close as possible to 200 mOhm. Do the same with the IMP REACT FS field. Note that the adjustment range for R is 0 to 100, for L is 0 to 300.

10. Press SET to save the calibration coefficients.

11. If there is not enough range in the full-scale calibration coefficient for either resistive or inductive portion, it may be necessary to tweak the adjustment pots on the MX controller.

These pots were originally adjusted at the factory and normally do not have to be adjusted again. The Full Scale calibration coefficients should have enough adjustment range. Double check the connections and phase measurements if this is not the case to make sure the measurement readings you get are indeed correct.

If it is necessary to adjust the pots, see Table 6-4 for the corresponding pot designators. The

top cover has to be removed to access these pots. They are located along the top edge of the controller board.

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MX15

Controller (7003-718-5)

R resistive

R121

Table 6-4: Programmable Z adjustment pots

Xl inductive

R122

Definitions:

V

NL

= Measured RMS voltage under no load.

V

L

= Measured RMS voltage under load

I = Measured RMS current.

F = Source frequency (50 Hz).



= Phase angle shift between load and no load conditions. Record phase angle from phase meter under NL and L condition and determine phase shift.

Formulas to calculate R and L component of output impedance:

R = ( V

NL

* cos(



) - V

L

) / I

X

L

= ( V

NL

* sin(



)) / I

L = X

L

/ (2 * Pi * F)

Table 6-5: Formulas to calculate R and L

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7 Service

7.1 Cleaning

The exterior of the power source may be cleaned with a cloth dampened with a mild detergent and wrung out. Disconnect mains power to the source before cleaning. Do not spray water or other cleaning agents directly on the power source.

7.2 General

This section describes the suggested maintenance and troubleshooting procedures. The troubleshooting procedure is divided into two sections. The first section deals with basic operation and connection of the equipment. The second section requires opening the unit and using LED indicators and a simple multimeter to troubleshoot the unit down to the module level.

Only a qualified electronic technician should attempt this level troubleshooting.

7.3 Basic operation

Table 7-1: Basic Symptoms

PARAGRAPH

7.3.1

7.3.2

7.3.3

7.3.4

7.3.5

7.3.6

7.3.7

7.3.1 Excessive Output Voltage

PROBLEM

Excessive Output Voltage

Poor Output Voltage Regulation

Overload Light On

Distorted Output

Unit Shuts Down After 1-2 Seconds

No Output and no lights on front panel

No output, but front panel controller is active.

SOLUTION

Connect external sense wires from TB2 on rear panel to the AC power outlet TB1

CAUSE

External sense not connected (If used)

7.3.2 Poor Output Voltage Regulation

CAUSE

Unit is overloaded

Unit is programmed to wrong voltage range.

Input line has fallen below spec limit.

SOLUTION

Remove overload

Select correct voltage range.

Check input supply voltage.

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7.3.3 Overload Light is On

CAUSE

Unit is overloaded

Unit is switched to high voltage range.

7.3.4 Distorted Output

SOLUTION

Remove overload or check CL setting

Select correct voltage range.

CAUSE

Power source is grossly overloaded.

The crest factor of the load exceeds 3:1 on the low range or 5:1 on the high range.

7.3.5 Unit Shuts Down after 1-2 Seconds

SOLUTION

Reduce load

Reduce load current peaks by reducing load.

CAUSE

Output shorted

Output grossly overloaded.

PFC IGBT module failure

Operating load with too high inrush or start up currents.

7.3.6 No Output and No Lights on Front Panel

SOLUTION

Remove output short

Remove overload.

Have power module serviced

Consult factory for application advice.

CAUSE

Input circuit breaker switched off.

No input power to F1, F2 and F3.

LV Power Supply failure

SOLUTION

Switch the breaker on.

Ensure 3 phase power is getting to input fuses.

Have LV supply serviced.

7.3.7 No Output But Front Panel controller is active

CAUSE SOLUTION

“OUTPUT ON” button is turned off. Press OUTPUT ON so that “ON” LED is lit.

Check polarity setting or RI Mode. Use REMOTE INHIBIT pins 5 & 6 at TB3 on rear panel are shorted together. OUTPut:RI[:LEVel] LOW/HIGH command to set RI mode to high or low.

Current limit programmed down or to zero. Program current limit higher.

Voltage programmed down or to zero. Turn amplitude control up.

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7.4 Advanced Troubleshooting.

California Instruments

WARNING: Do not connect 400-480V into the 208-240V unit, the result could be a severely damaged unit.

CAUTION: VOLTAGES UP TO 480 VAC AND 450 VDC ARE PRESENT IN

CERTAIN SECTIONS OF THIS POWER SOURCE.

WARNING: THIS EQUIPMENT GENERATES POTENTIALLY LETHAL

VOLTAGES. DEATH ON CONTACT MAY RESULT IF PERSONNEL FAIL TO

OBSERVE SAFETY PRECAUTIONS. DO NOT TOUCH ELECTRONIC CIRCUITS

WHEN POWER IS APPLIED

7.4.1 Switch Off Unit

Switch off the unit at the circuit breaker on the front panel as well as removing the input power from the unit.

WARNING: Wait 10 minutes for all internal capacitors to discharge.

7.4.2 Removing Covers

Remove the screws securing the rear cover and remove it

Remove the screws securing the front cover and remove it.

Remove the screws securing the top cover and remove it.

7.4.3 Initial Inspection

Make a visual inspection of the unit and ensure all the connectors are properly mated and there are no loose wires.

7.4.4 Fuse Check

Using an ohmmeter, check input fuses F1, F2 and F3 for continuity.

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7.4.5 Poweron Troubleshooting Using the LED’s.

California Instruments

WARNING: Do not touch any parts inside the unit during this test as they will be live and dangerous. Always wear safety glasses.

If the three input fuses are OK, then reconnect the main AC input power to the cabinet.

LV Supply (CI P/N 7003-702):

Turn the main breaker on and check green LED DS2 and DS3 on the system interface board.

Both LEDs should be lit indicating the +/-19Vdc and +/-15Vdc supplies are OK.

If one or both of the LEDs is not lit, then there is something wrong with the LV power supply and it will have to be serviced.

Oscillator (Front Panel):

If LV supply appears good, then program 150Vac on the low range and connect a DMM to TP2

(phase A) on the system interface board with the low side of the meter connected to TP1. There should be a 2

– 3 volt rms signal present on TP2.

AC power module (CI P/N 7003-402-1):

If the oscillator drive signals are present on the system interface board, connect the DMM to brass terminals 5 & 6 located near the bottom of the power module. Program 100 Volts.

There should be about 100Vac between terminals 5 and 6. If no voltage at all is measured it is possible that the AC power stage inside the module has failed and it will be necessary to remove the power module from the chassis for closer inspection.

WARNING: Wait 10 minutes for all internal capacitors to discharge.

To remove the power module proceed as follows:

1. Disconnect the 7 wires going to the brass terminals on the lower front panel of the module.

Label the wires so they can be reinstalled correctly later.

2. Remove screws securing the upper and lower straps holding the module in the chassis slot.

3. Remove the 50-pin ribbon connector at J50.

4. Carefully slide module outward and lift out of cabinet. Use caution, module weighs 66 LBS

(30Kg).

5. With the power module out of the cabinet and lying flat on a bench, remove the screws on the bottom and sides of the cover as seen from the front when module is installed normally.

6. Inspect the three IGBT transistor modules Q1, Q2 and Q3 for any visible damage.

7. Using an ohmmeter check the 30A fuses on the positive and negative side of the power distribution board that connects the four amplifier modules to the DC bus. If any of them are open, then one or more of the amplifier sections has a damaged device on the heat sink assemblies and the power module assembly will have to be serviced.

7.4.6 Other No Output Conditions

If one or more outputs is gone, it may be caused by an amplifier failure. Amplifier failures can either be input (PFC) or output related (Amp). To determine if this is the case, the cover of the

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California Instruments amplifier has to be removed. Contact customer service [email protected]

before attempting to diagnose on your own.

PFC failure denotes one or all three of the IGBT power modules on the large PFC heat sink have shorted, and damaged the devices. This type of failure is sometimes accompanied by a popping sound as the large PFC power devices give out. To diagnose this failure mode, the amplifiers must be removed and the cover removed for inspection.

If there is any sign of damage, the PFC power devices must be replaced. If not, they need to be checked for continuity using a DMM or diode checker.

In case of a PFC failure, older generation PFC control boards (7003-705 or 7003-712) may have sustained damaged in the isolated gate drive section of the board and the board itself may have to be replaced. MX Systems with later generation 7003-716 PFC control boards generally will only require replacement of the 2A gate fuses to restore functionality.

If the PFC section looks intact, one of the output amplifier switches may have shorted.

The usual scenario is one or two of the IGBT switch devices on one of the 4 heat sinks get shorted. Usually if the B+ device is failed, the B- device will also short. When these devices short, one or more of the 30A fuses (F1 through F8) on the DC power distribution board will be open.

An amplifier device failure is not audible at all so there may be no indication of this other than checking as follows:

1. Measure the output voltage with Zero AC volts programmed.

2. Remove any EUT from the output connections.

3. Turn output ON and measure the AC and DC output. It should be close to zero.

4. If the output reads

–225VDC on the low range and close to 0 Vdc on the high range, then it is almost certain that the fuse is blown and 1 or 2 IGBT devices are shorted.

Note that the measurement screen will not report the DC faulty output voltage in the AC mode, as the measurements in this mode are AC coupled. Therefore, it is necessary to measure at the output terminals with a DMM to determine the actual output. Alternatively, the MX45 can be switched to AC+DC mode in which case the internal measurements can be used instead.

If it is determined that it is an amplifier failure, the affected IGBT's need to be replaced. If no local service support is available, the amplifier may be exchanged completely. Contact customer service [email protected]

for module exchange information.

7.5 Factory Assistance

If the problem with the cabinet or one of the power modules cannot be isolated, contact the factory for assistance.

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7.6 Fuses

FUSE #

F1, F2, F3

F1, F2, F3

F1

F1

– F8

FUNCTION

AC mains input, 208 - 240V.

AC mains input, 400 - 480V

Power Module PFC Fuse

AMP Heat Sink Fuses

Table 7-2: MX Fuse Ratings

FUSE VALUE

60A

35A

70A

30A

7.7 Firmware Updates

CI #

270247

270244

270233

270168

All MX15 Series units support firmware updates over the RS232C interface.

7.7.1 Requirements

This section provides basic instructions for updating firmware on MX series AC power sources.

The following items are required to download new firmware:

A copy of the new firmware in HEX format. Typically named “cic920rn.nn.hex” where

“n.nn” represents the revision of the firmware. The file may be downloaded from the

AMETEK Programmable Power website ( www.programmablepower.com

) or may have been distributed through email. If the file is archived to a zip, it must be unzipped to its original HEX format (.hex extension) before it can be used.

The FlashLoaderComm utility program is what is used to install new firmware. This

Windows program can be downloaded from the AMETEK Programmable Power website

( www.programmablepower.com

) under MX Series Downloads.

A Windows XP/7 PC with available RS232 serial port (COM port).

A RS232

1

serial cable, P/N 7000-263-2. This cable is provided in the MX15 Series ship kit. If lost, refer to the MX Series programming manual (PN 7003-961) for cable pin-out information or contact customer service ( [email protected]

) to order a replacement.

7.7.2 Download Instructions

Copy both FlashLoaderComm.exe and cic920rn.nn.hex files to a temporary folder on your PC. If the FlashLoaderComm.exe was downloaded from the CI web site, it will have to be installed.

This is a self-extracting program installation. Just double click on the exe file to perform the installation and follow the user prompts.

Cic920rn.nn.exe is the hex file that contains the firmware update. The n.nn will be the revision number of the firmware. The hex file may be distributed as a WinZip archive with a .zip extension. In that case, unzip the .zip file to its native .hex format before attempting to upgrade the MX15 unit.

Please record the revision of the previous firmware before the update for reference. The firmware revision is displayed during power up sequence of the MX15 AC source.

Connect the 7000-263-2 RS232 cable (9 pin to 9 pin) between the power source and an available

COM port of the PC.

1

The GPIB interface cannot be used for this purpose, as the Flash boot loader is a small resident program that does not support GPIB communications.

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Power up the AC source using its on/off switch while holding the ENTER key at the same

time. A sequence of messages will appear on the LCD once the power comes on:

This will put the source controller into the Flash down load mode. Wait until the screen shown below appears. This screen shows the RS232 setup parameters that are used in the boot loader mode.

Now launch the Flash Lo ader utility program “FlashLoaderComm.exe”.

MX15

Select the COM port to be used (default is COM1). Leave “Baud rate” and “Cmd Delay” set to their default values of 38400 baud and 0 msec.

Click on the “Init Port” button. If the selected port can be initialized, the “Flash Update” button will be enabled. If not, check the selected COM port and make sure it is the one connected to the

MX15.

Press the “Flash Update” button. This will display the file download screen shown below.

136

User Manual - Rev M California Instruments

Select Browse and locate the file Cic920rn.nn.hex at the location on the PC where you stored it before.

Click on the “Download” button. This will start the firmware update procedure. The front panel display for the AC source will display the message “Erasing Flash” first, followed by “Flash

erase complete

” and “Programming Flash”. The down load will be completed in about 5 to 10 minutes depending on the size of the .hex file.

After the download completes successfully, the power source will initialize with the new firmware.

Observe the LCD display for the firmware revision displayed during initialization to confirm the new firmware is now installed.

7.7.3 Flash down load Messages

One or more messages may appear during this process. The table below shows some of the possible message and their meaning.

Message

Flash erase complete

Flash erase fail

Description

Erase operation successful.

Remedy

Firmware download capability not supported by CPU board..

Refer to Service Bulletin SB-

0043

Flash write fail

Firmware down load fail

Unable to write to flash. This message is unlikely as it generally is preceded by the Flash Erase

Fail message.

Refer to Service Bulletin SB-

0043

Data error. Incorrect checksum read-back from Flash block.

Communication interrupted or problem with RS232 interface.

Table 7-3: Flash Down load Messages

1. Check cable connection.

2. Try setting CmdDelay in Flash loader program to 100 msec and try again.

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8 Top Assembly Replaceable Parts

Seq # CI P/N Description Vendor

A2

A5

A3

7003-718-5 CPU board assy

7005-702-1 Keyboard/Display assy.

7005-701-1 PC Assy, System Interface

A4

A6

A8

A7

7005-700-1

7003-722-1

7003-714-1

7003-433-2

PC Assy, V / I Sense

PC Assy, Low Volt PSU

PC Assy, EMI Filter

Amplifier Assy, 15kVA

A11 7003-723-2 PC Assy, Ripple Filter

B1 241186 Fan, 3", 24VDC

CB1

K1

K7

K2

K6

K8

K3

K5

K4

A1

A1

270224

245235

245235

245243

245243

245243

245243

245243

245243

Circuit Breaker, 2.5A, 300V

Relay, 3C, 30A, 24VDC

Relay, 3C, 30A, 24VDC

Relay, 3C, 90A, 24VDC

Relay, 3C, 90A, 24VDC

Relay, 3C, 90A, 24VDC

Relay, 3C, 100A, 24VDC

Relay, 3C, 100A, 24VDC

Relay, 3C, 100A, 24VDC

AMETEK

AMETEK

AMETEK

AMETEK

AMETEK

AMETEK

AMETEK

AMETEK

NMB Technology

3110KLO5WB50-P00

AIRPAX

IELH111-1-61-2-50-D-

01-V

Deltrol Controls

21014 - 82

Deltrol Controls

21014 - 82

Cerus Industrial

Orion CRD-50

Cerus Industrial

Orion CRD-50

Cerus Industrial

Orion CRD-50

Cerus Industrial

Orion CRD-50

Cerus Industrial

Orion CRD-50

Cerus Industrial

Orion CRD-50

Top Assembly 7005-403

7003-721-3 PC Assy. RS232 / GPIB /

USB

7003-721-4 PC Assy. RS232 / GPIB /

USB / LAN

AMETEK

AMETEK

A1

A1

Top Assembly 7005-400

7003-703-3 PC Assy RS232 / GPIB /W AMETEK

7003-703-4 PC Assy RS232 / GPIB /Wout AMETEK

1

1

1

1

1

1

1

1

Qty Location

1

1

1

1

1

1

1

1

1

1

1

1

1

1

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Q1

Q2

Q3

Q4

Q1

Q2

Q3

Q4

A1

A1

A3

A4

A5

A6

A7

A8

A8

A14

B1

B2

A1

A3

A4

A5

A6

A7

A8

A8

A14

B1

B2

CR13

CR14

CR15

CR16

Q1

Q2

Q3

Seq # CI P/N Description Vendor

330436

330436

330436

330436

330450

330450

7003-730-1

7003-405-1

7003-405-1

7003-726-1

7003-726-2

7003-716-1

7003-708-1

7003-725-1

7003-729-1

241183

241183

Amplifier Assy. 15kVA 7003-418-1

Transistor, IGBT

Transistor, IGBT

Transistor, IGBT

Transistor, IGBT

IXYS, IXGX60N60C2D1

IXYS, IXGX60N60C2D1

IXYS, IXGX60N60C2D1

IXYS, IXGX60N60C2D1

Amplifier Assy. 15kVA 7003-425-1 / 7003-433-2&-5

Transistor, FET

Transistor, FET

INFINEON,

IPW60R045CPXK

INFINEON,

IPW60R045CPXK

330450

330450

7003-704-1

7003-720-1

7003-405-1

7003-405-1

7003-707-1

7003-707-2

7003-716-1

7003-708-1

7003-717-1

7003-713-1

241183

241183

Transistor, FET

Transistor, FET

INFINEON,

IPW60R045CPXK

INFINEON,

IPW60R045CPXK

Amplifier Assy. 15kVA - 7003-418-1 / 7003-425-1

PC Assy., Modulator (418) AMETEK

PC Assy., Modulator (425) AMETEK

Heat sink Assy. Amplifier AMETEK

Heat sink Assy. Amplifier

PC Assy., Output Filter

AMETEK

AMETEK

PC Assy., Output Filter

PC Assy., PFC

AMETEK

AMETEK

PC Assy., Fan Control

PC Assy., Snubber.

AMETEK

AMETEK

PC Assy., PWR Interconn. AMETEK

FAN, 6" ROTRON JQ24B2

FAN, 6" ROTRON JQ24B2

Amplifier Assy. 15kVA - 7003-433-2&-5

PC Assy., Modulator

Heat sink Assy. Amplifier

Heat sink Assy. Amplifier

PC Assy., Output Filter

PC Assy., Output Filter

AMETEK

AMETEK

AMETEK

AMETEK

AMETEK

PC Assy., PFC

PC Assy., Fan Control

AMETEK

AMETEK

PC Assy., Snubber. AMETEK

PC Assy., PWR Interconn. AMETEK

FAN, 6"

FAN, 6"

ROTRON JQ24B2

ROTRON JQ24B2

310387

310387

310387

310387

330437

330437

330437

Amplifier Assy. 15kVA (all)

Diode, FRcy, 30A, 1000V

Diode, FRcy, 30A, 1000V

Diode, FRcy, 30A, 1000V

Diode, FRcy, 30A, 1000V

Transistor, IGBT

APT, APT30D100B

APT, APT30D100B

APT, APT30D100B

APT, APT30D100B

FUJI, 2MBI150NC-060

Transistor, IGBT

Transistor, IGBT

FUJI, 2MBI150NC-060

FUJI, 2MBI150NC-060

Table 8-1: Replaceable Parts

Qty

4

4

4

4

4

4

4

4

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

Location

A7

A7

A7

A7

A7

A7

A7

A7

A7

A7

A7

A7

A7

A7

A7

A7

A7

A7

A7

A7

A7

A7

A7

A7

A7

A7

A7

A7

A7

A7

A7

A7-PFC

A8-PFC

A9-PFC

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Seq # CI P/N Description Vendor Qty Assy Number and Location

F1

F2

F3

F1

F2

F3

270247 FUSE, 60A, 600V

270247 FUSE, 60A, 600V

270247 FUSE, 60A, 600V

270244 FUSE, 35A, 600V

270244 FUSE, 35A, 600V

270244 FUSE, 35A, 600V

Top Assembly 7003-403-01

LITTELFUSE JLLS 60

LITTELFUSE JLLS 60

LITTELFUSE JLLS 60

LITTELFUSE JLLS 35

LITTELFUSE JLLS 35

LITTELFUSE JLLS 35

1

1

1

1

1

1

For 208V / 230V Input

For 400V / 480V Input

Amplifier Assy 15kVA

7003-418-1 / 7003-425-1 / 7003-433-2&-5

F1 270233 FUSE, 100A, 500V Ferraz Shawmut

A50QS100-4

F1-F8 270168 FUSE, 30A, 600V Bussmann KTK-30

Littlefuse KLK-30

1

8

Low Voltage Power Supply 7003-722-1

F1

F2

F3

F1

F2

270192

270192

270189

FUSE, Poly switch

FUSE, Poly switch

FUSE, Poly switch

Raychem RUE250

Raychem RUE250

Raychem RXEF110

Low Voltage Power Supply 7003-702-1

270192 FUSE, Polyswitch Raychem RUE250 1

270192 FUSE, Polyswitch Raychem RUE250 1

1

1

1

F1

F2

270183

270192

FUSE, 3A, 250V

FUSE, Polyswitch

Fan Control 7003-708-1

Bussmann PCC3

Raychem RUE250

1

1

A7

7003-729-1

A6

A6

A6

A6

A6

A7-A8

A7-A8

Table 8-2: Fuses

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9 Options

9.1 Introduction

There are a number of options available for the MX15 Series, both hardware and software. While not all or no options may be present on your specific unit, this section of the manual incorporates the user documentation for all available options. There is no separate manual for these options except possible manual addenda for special engineering request (SER) systems. If your system has an SER number as part of the model number, refer to any manual addendum that was shipped with the unit.

9.2 Option -HV: Additional AC Voltage Range

The -HV option provides an additional AC only output voltage range of 0-400 VRMS. There is no equivalent 200 VRMS range associated with the -HV option but the standard 0-150 V RMS and

0-300 V RMS remain available even if the -HV option is installed.

If the -HV option is installed, there will be three voltage ranges that can be selected from the

PROGAM menu. (150/300/400). Other than the range values, all other operations remain the same. Note however that the -HV range is AC coupled and as such offers no DC output capability. Thus, whenever the 400 V range is selected, the output mode is automatically set to

AC MODE and other modes cannot be selected.

Arbitrary waveforms

As stated before, the

–HV (and –XV) range is AC (transformer) coupled and as such cannot pass any DC component from the waveform generator. This means that any arbitrary waveform created by the user that is to be used in the

–HV range cannot have any DC offset. The MX firmware will generate an error message if an attempt is made to select a custom waveform with

DC offset while in the

–HV range.

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9.3 Option

–160: RTCA/DO-160 Tests

The RTCA/DO-160 Option is made up of both firmware that resides in the power source and the

MXGui Windows application program. The firmware covers revision D and can be used from the front panel or under MXGui control. Revision E is implemented through the MXGui only.

The user interface for each implementation is different. The revision D tests can be operated directly from the power so urce’s front panel or through the supplied MXGui program. The

Revision E tests can only be operated through the MXGui windows software. Thus, for Rev E use, a Windows PC and interface

– RS232, USB, LAN or GPIB (recommend) - is required.

Section 9.3.1 covers operation of the firmware based revision D tests.

For information regarding the operation of the DO160 revision E tests with the MXGui, please refer to the Avionics Software Manual (CI part no. 4994-971 included on CDROM). Note that future updates of the MXGui may include overlapping coverage for revision D in the software as the MXGui program is designed to support all revisions. For now, revision D has no associated data files in the MXGui but does have it’s own user interface control screen.

9.3.1 Option

–160: RTCA/DO160 rev D Tests (Firmware)

9.3.1.1 General

This user manual assumes that the user is familiar with the text of the relevant DO160, section

16 test standard. No attempt is made to explain or elaborate on the actual test specification.

The RTCA/DO-160D option is capable of performing all sub-sections of RTCA/DO-160D, Section

16, RTCA/DO-160D change No2 and EUROCAE-14D / RTCA DO160D, Section 16 for the AC

Source signal. A selection is made available to specify the type of standard to be applied to the

EUT and the available EUT groups.

The voltage modulation tests for Airbus ABD0100.8 are supported by this option as well. The voltage modulation levels for the Airbus version are specified differently from DO160. All other tests are the same for Airbus and DO160.

Throughout this document, RTCA/DO-160D change No2 will be referred to as RTCA2. Groups 1 through 3 will be used to refer to the EUROCAE-14D standard. Category A(CF), A(NF) and

A(WF) will be used to refer to the RTCA2 standard.

9.3.1.2 Initial Setup

Nominal parameters for the AC Power source are as follows:

Output Voltage 115V L-N or 230V L-N

Output Frequency 360 Hz to 800 Hz

Note: A setting outside these nominal values will disable the test and will prevent access to the DO160 Menu screens. To execute all tests for the 230V L-N, the power source must be capable of programming 360V RMS. This requires the -HV option output range (400V). If this option is not installed, some tests will be skipped.

9.3.1.3 Tests Performed

9.3.1.3.1 NORMAL STATE

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AC Source:

1. Normal State Voltage and Frequency test

2. Voltage unbalance test

3. Waveform Distortion test

4. Voltage Modulation test

5. Frequency Modulation test

6. Momentary Power Interrupt (Under voltage) test

7. Voltage Surge (Over voltage) test

8. Frequency Transients test(Group 1 only)

Frequency Variation test (Group 2 and 3 only)

9.3.1.3.2 EMERGENCY TEST

AC Source:

1. Emergency Voltage and Frequency minimum

2. Emergency Voltage and Frequency maximum

3. Voltage unbalance

9.3.1.3.3 ABNORMAL TEST

AC Source:

1. Abnormal Voltage minimum

2. Abnormal Voltage maximum

3. Voltage Drop

4. Voltage Surge

5. Frequency Transients test (group 1 only)

9.3.1.4 Front Panel Operation -160

To perform a test from the keyboard, Press the MENU key several times until the

APPLICATIONS/OPTIONS Menu appears, select the APPLICATIONS screen. The

APPLICATIONS screen will appear as shown in Figure 9-1.

Figure 9-1: Application Menu

Scroll to the RTCA/DO-160D entry using the up and down cursor keys. Press the ENTER key to

select the RTCA/DO 160D main menu. The screen will appear as shown in Figure 9-2.

Note: The user has to turn on the Output relay before starting a test.

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Figure 9-2: DO160 Main Menus

Prior to executing a test, selection of the desired test standard and group is required. Use the shuttle to select the standard and the group if applicable.

9.3.1.5 Normal State tests

Scroll to the NORMAL STATE entry using the up and down cursor keys. Press the ENTER key to

select the NORMAL STATE screens. The screen will appear as shown in Figure 9-3.

MX15

Figure 9-3: Normal state screens

The DO160 NORMAL screens have the following tests:

1 VOLT FREQ MIN

2

3

4

VOLT FREQ MAX

VOLT UNBALANCE

WAVEFORM DISTORTION

7

8

5

6

9

VOLT MODULATION

FREQ MODULATION

POWER INTERRUPT

VOLTAGE SURGE

FREQ TRANSIENT (group 1/A(CF))

FREQ VARIATION (group 2 & 3/A(NF) & A(WF))

The above tests can be selected by scrolling to the highlighted selection using the up and down key and the ENTER key to start the selected test. For some of these tests, numeric data entry may be required to define the test number or the modulation rate.

VOLT FREQ MIN

Standard/Group

Voltage 1

RTCA

100

A(CF)

100

A(NF)

100

A(WF)

100

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Standard/Group

Frequency

3

RTCA

N/A

380

A(CF)

N/A

390

A(NF)

N/A

360

Standard/Group

Voltage

Frequency

1

3

Group1

104

N/A

390

Group2

104

N/A

360

Table 9-1: Normal Voltage and Frequency minimum

Group3

104

N/A

360

A(WF)

N/A

360

Standard/Group

Voltage

Frequency

1

3

RTCA

122

N/A

420

A(CF)

122

N/A

410

A(NF)

122

N/A

650

A(WF)

122

N/A

800

Standard/Group

Voltage

Frequency

1

3

Group1

122

N/A

410

Group2

122

N/A

650

Group3

122

N/A

800

Table 9-2: Normal Voltage and Frequency Maximum

This test will set the voltage and frequency to levels defined by Table 9-1. The test will last for 30 minutes. The test will be repeated, except group1, using the Voltage setting from Table 9-2 and the frequency from Table 9-1. The

key (backspace) will terminate the test at any time.

VOLT FREQ MAX

This test will set the voltage and frequency to levels defined by Table 9-2. The test will last for 30 minutes. The test will be repeated, except group1, using the Voltage setting from Table 9-1 and the frequency from Table 9-2. The unselected phases will remain at 115 volts. The

key

(backspace) will terminate the test at any time.

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VOLT UNBALANCE

This test is not available on the MX15 Series since only a single phase output is available.

WAVEFORM DISTORTION

This test will generate a 5% THD voltage distortion on the output voltage waveform at the nominal voltage set. (115 V or 230 V) A clipped sine wave generates the required distortion.

The test will last for 30 minutes. The

key (backspace) will terminate the test at any time.

VOLTAGE MODULATION

This test requires a numeric value entry equal to the modulation rate in Hz. This entry value must be between 1 Hz and 200 Hz. The amplitude modulation is calculated based on the

modulation rate as defined in Figure 9-4. This test will last for 2 minutes.

Note that the Airbus voltage modulation test levels are specified in peak to peak voltage instead of Vrms. Table 9-3 shows the levels for the Airbus mode versus the DO160 and EUROCAE modes as implemented in the MX15 firmware. The actual requirement for Airbus ABD0100.8 is now specified in Vpeak peak instead of Vrms so the Airbus mode should not be used. Use the

DO160 or EURO/CAE mode instead.

Modulation

Frequency (Hz)

1

1.7

10

25

70

100

200

DO160 / EUROCAE

Volt RMS

0.18

0.18

1.24

1.24

0.18

0.18

0.18

Modulation

Frequency (Hz)

1

1.7

10

25

70

100

N/A

Table 9-3: Airbus mode voltage modulation.

AIRBUS

Volt RMS

0.5

0.5

3.5

3.5

0.5

0.5

N/A

Note: Voltage modulation levels change linearly from frequency 1.7Hz to 10Hz and again from 25Hz to 75Hz. See Figure 9-4.

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Figure 9-4: Voltage Modulation - Frequency characteristics

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FREQUENCY MODULATION

This test requires a numeric value equal to the modulation rate in Hz. This value must be between 0.01 Hz and 100 Hz. The frequency modulation is calculated based on the modulation

rate as defined in Figure 9-5. This test will last for a minimum of 2 minutes.

Figure 9-5: Frequency Modulation

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POWER INTERRUPT

This test requires a numeric entry value equal to the test number. The tests are grouped as follows:

Test numbers 1 through 15 are for all Standard and Groups. See Figure 9-6 for details

of the tests.

Test numbers 16 and 17 for all equipment that does not incorporate digital circuit. Test number 16 will drop the output to zero voltage for 50 ms. Test number 17 will drop the output to zero voltage for 200 ms. Test numbers 21 through 26 are applicable for Groups 2 and 3 only for EUROCAE standard and category A(NF) and A(WF) for RTCA2. Output frequency will be set to the F1 value for 1 second prior to the test. The output frequency will remain set to the F2 value when the test is completed. This will allow the user to apply sequence of

power interrupts. See Figure 9-7 for detail of the tests.

T1

V (NOM)

% of V NOMINAL

(V MIN)

0 VOLTS

T2 T3

DO160 Table 16-1: Test conditions for equipment with digital circuits.

NOTES 1: Definitions:

T1

T2

T3

V MIN

Power interrupt time

Time it would take for the applied voltage to decay from V (nom) to zero volts.

Time it would take for the applied voltage to rise from zero to V (nom) volts.

The minimum level (expressed as a percentage of V NOMINAL) to which the applied voltage is permitted to decay.

2: Tolerance to T1, T2, T3 = ± 10%

3: Test condition numbers 8 and 15 are for category Z, dc powered equipment only.

Applicable

Category:

A A, Z Z A, B, Z A, Z

1** 2 3 4 5 6 7 8 9 10 11 12 13 14 Test Condition No.

T1 (ms)

T2 (ms)

T3 (ms)

Z

15

2** 10 25 50 75 100 200 1000 10 25 50 75 100 200 1000

<1 20* 20 20 20 20 20 20 50* 50* 50 50 50 50 50

<1 5 5 5 5 5 5 5 20 20 20 20 20 20 20

%V Nom.

(V min)

0 50 15 10 5 0 0 0 80 50 0 15 5 0 0

* Voltage will not reach zero in this test condition.

** Equipment performance standards may require to repeat test n°1 with T1 varying from 5 to 200 ms by step defined in the test equipment performance standards (step typically comprised between 5 ms and 20 ms depending on equipment design.

Figure 9-6: Power Interrupt

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F1

T2

T1

0 Volt

T3

F2

Test no.:

Standard:

T1 (ms)

F1 (Hz)

F2 (Hz)

21

I

50

360

Fmax

22

II

50

Fmax

360

23

III

100

360

Fmax

24

IV

100

Fmax

360

25

V

200

360

Fmax

Fmax = 650 Hz for Group2/A(NF)

Fmax = 800 Hz for Group3/A(WF)

T2 = 20 msec

T3 = 5 msec

Figure 9-7: Power Interrupt for Group2/A(NF) and Group3/A(WF)

26

VI

200

Fmax

360

VOLTAGE SURGE

This test requires 160V output voltage. If the power source is set at the low voltage range, the high voltage range will be selected before the test starts. At the end of the test, the power source will be switched back to the low range automatically

Seq. No.

1

2

3

4

5

RTCA

115

160

115

60

115

Group 1

115

160

115

70

115

Voltage

Group 2

115

160

115

70

115

Table 9-4: Normal VoltageSurge Sequence

Group 3

115

170

115

70

115

Time

ALL

5 Minute

30msec

5 Sec.

30msec

5 Sec.

The output voltage will follow the sequence in Table 9-4. The above sequence will repeat itself

three times. Each repeat will start from sequence two. RTCA and Group 1 will run at 400 Hz.

Group 2 and A(NF) will run at 360 Hz and 650 Hz. Group 3 and A(WF) will run at 360Hz and

800Hz. The frequency will return to the nominal setting when the test is completed. The

key

(backspace) will terminate the test at any time.

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FREQUENCY TRANSIENTS (Group 1 and A(CF) only)

Seq. No

1

2

3

4

5

6

7

Frequency

400

440

420

400

350

380

400

Time

5 Minute

150msec

1.5sec

5Sec.

150msec

1.5sec

5Sec.

Table 9-5: Normal Frequency Transient Sequence

This test applies to Group1 and A(CF) only. The output voltage is set to Vnom (115 V) while the

frequency is changed per the sequence listed in Table 9-5. The test will cycle 5 times starting

from sequence 2. Steps 3 and 6 apply to A(CF) only.

FREQUENCY VARIATION (Group2 / A(NF) and Group3 / A(WF) only)

Seq. No

1

2

3

Initial Frequency

Group2 Group3

360

650

360

360

800

360

Slew rate

Hz/Sec

100

100 or 200

Pause 5 sec

Final Frequency

Group2

650

360

360

Group3

800

360

360

Table 9-6: Normal Frequency Variation Sequence

This test will apply to Group2/A(NF) and Group3/A(WF) only. . The output voltage is set to Vnom

(115 V) while the frequency is set to 360Hz for 5 minutes. The frequency is slowed per the

sequence listed in Table 9-6. The test will cycle 3 times. The frequency will return to nominal

after the test is completed. Slew rates of 200Hz apply to RTCA2 only.

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9.3.1.6 EMERGENCY TEST

From the DO160 MENU scroll to the EMERGENCY AC entry using the up and down cursor keys.

Press the ENTER key to select the EMERGENCY screens. The screen will appear as shown in

Figure 9-8.

Figure 9-8: Emergency Screens

The EMERGENCY SCREEN has the following tests:

1

2

VOLT FREQ MIN

VOLT FREQ MAX

3 VOLT UNBALANCE

The above tests can be selected by scrolling to the highlighted selection using the up and down key and the ENTER key to start the selected test.

VOLT FREQ MIN

Standard/Group

Voltage

Frequency

RTCA

100

N/A

360

A(CF)

100

N/A

360

A(NF)

100

N/A

360

A(WF)

100

N/A

360

Standard/Group

Voltage

Frequency

Group1

104

N/A

360

Group2

104

N/A

360

Group3

104

N/A

360

Table 9-7: Emergency Voltage and Frequency Minimum

Standard/Group

Voltage

Frequency

RTCA

122

N/A

440

Group1

122

N/A

440

Group2

122

N/A

650

Standard/Group

Voltage

Frequency

Group1

122

N/A

440

Group2

122

N/A

650

Group3

122

N/A

800

Table 9-8: Emergency Voltage and Frequency Maximum

Group3

122

N/A

800

This test will set the voltage and frequency to a level defined by Table 9-7. The test will last for 30 minutes. The test will be repeated using the voltage from Table 9-8 and frequency from Table

9-7. The

key (backspace) will terminate the test at any time.

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VOLT FREQ MAX

This test will set the voltage and frequency to a level defined by Table 9-8. The test will last for 30 minutes. The test will be repeated using the voltage from Table 9-7 and frequency from Table

9-8. The

key (backspace) will terminate the test at any time.

VOLT UNBALANCE

This test is not available on the MX15 Series since only a single phase output is available.

9.3.1.7 ABNORMAL TEST

From the DO160 MENU Scroll to the ABNORMAL AC entry using the up and down cursor keys.

Press the ENTER key to select the ABNORMAL screens. The screen will appear as shown in

Figure 9-9.

Figure 9-9: Abnormal Screen

The ABNORMAL SCREEN has the following tests:

1 VOLT MAX

2

3

VOLT MIN

VOLT UNBALNCE

4

5

VOLT SURG

VOLT DROP

6 FREQ TRANSIENTS

The above test can be selected by scrolling to the highlighted selection using the up and down key and the ENTER key to start the selected test.

VOLT MAX

Standard/Group

Voltage

Frequency

1

3

RTCA

97

N/A

400

Group1/A(CF)

97

N/A

400

104/100

N/A

370

Table 9-9: Abnormal Voltage Minimum

Group2/A(NF) Group3/A(WF)

97 97

N/A

360

N/A

360

Standard/Group

Voltage 1

Frequency

3

RTCA

134

N/A

400

Group1/ACF)

134

N/A

400

122

N/A

430

Table 9-10: Abnormal Voltage Maximum

Group2/A(NF) Group3/A(WF)

134 134

N/A

650

N/A

800

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This test will set the voltage and frequency to levels defined by Table 9-9 for 5 minutes. The test will be repeated for Group1and A(CF) only as indicated in Table 9-9 for voltage and Table 9-10

for frequency. All Groups will repeat the test using Table 9-10 for the voltage setting and Table

9-9 or Table 9-101for the frequency setting. The

key (backspace) will terminate the test at any time.

VOLT MIN

This test will set the voltage and frequency to levels defined by Table 9-10 for 5 minutes. The test will be repeated for Group1 only as indicated in Table 9-10. All Groups will repeat the test using

Table 9-10 for the voltage setting and Table 9-9 for the frequency setting. The

key (backspace) will terminate the test at any time.

VOLT UNBALANCE

This test is not available on the MX15 Series since only a single phase output is available.

VOLT UNDER

This test will drop the output voltage from 115 volts to 60 volts for 7 seconds.

VOLT SURGE

This test requires 180 volt output voltage. If the power source is set at the low voltage range, the high voltage range will be selected before the test starts. At the end of the test the AC source will be switched back to the low range.

The output voltage will surge to 180 volts for 100 ms. followed by drop to 148 volts for 1 sec before it returns to 115 volts. The

key (backspace) will terminate the test at any time.

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FREQUENCY TRANSIENTS (A(CF) only)

Test 1

Seq. No. Volt/Frequency

1 115/400

2

3

115/350

115/320

4

5

0/320

115V/400

Test 2

Seq. No. Volt/Frequency

1 115/400

2

3

115/480

115/440

4

5

0/440

115V/400

FREQUENCY TRANSIENTS (Group 1 only)

Time

5 minutes

5 sec.

0.2 sec.

0.2 sec.

10 sec.

Time

5 minutes

0.2 sec.

5 sec.

0.2 sec.

10 sec.

Seq. No.

1

2

3

4

5

Frequency

400

480

400

320

400

Time

5 minutes

5 sec.

10 sec.

5 sec.

10 sec.

Table 9-11: Abnormal Frequency Transient

This test will set the voltage at 115V and will remain at this voltage through out the test except for

the A(CF) category. The test will cycle the frequency three times as shown in Table 9-11. Each

repeat will start from sequence 2. Test1 and test2 for the A(CF) category are done in succession as a single test.

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9.4 Option

–704: MilStd704 Tests

The MIL704 option is made up of both firmware that resides in the power source and the MXGui

Windows application program. The firmware covers revision D and E of the Mil-Std704 standard.

The MXGui covers the remaining revisions A, B, C and F. This provides coverage of all available standard revisions.

The user interface for each implementation is different however. The revision D and E tests can be operated directly from the power source’s front panel or through the supplied MXGui program.

The revision A-C, F tests can only be operated through the supplied MXGui program. Thus, for rev A-C and F, a Windows PC and interface is required.

Section 9.4.1 covers operation of the firmware based revision D and E tests.

For information regarding the operation of the MIL-STD-704 revision A, B, C, and F tests with the

MXGui, please refer to the Avionics Software Manual (CI part no. 4994-971 included on

CDROM). Note that future updates of the MXGui may include overlapping coverage for revisions

D and E in the software as the MXGui program is designed to support all revisions. For now, revisions D and E have no associated data files in the MXGui.

9.4.1 General

This user manual assumes that the user is familiar with the text of the relevant MIL-STD 704, test standard. No attempt is made to explain or elaborate on the actual test specification.

The MX15 supports two different implementations of the MIL-STD 704. This chapter covers the legacy implementation referred to on the menu screens as MIL704. This implementation predates the release of the test protocol handbook that accompanied revision F of the standard.

Test Execution Considerations

Several of the MIL-STD 704 test steps take considerable time to execute. Tests in progress may be aborted by using the BACK button on the MX15 front panel.

9.4.2 Initial Setup

Nominal parameters for the AC Power source are as follows:

Output Voltage 115V L-N or 230V L-N

Output Frequency 360 Hz to 800 Hz for all revisions.

60 Hz for revision F only.

Nominal parameters for the DC Power source are as follows:

Output Voltage 28V or 270V L-N

Note: A setting outside these nominal values will disable the test and will prevent access to the 704 Menu screens or execution of any test step. To execute all tests for the 230V L-N, the power source must be capable of programming 360V RMS.

This requires the -HV option. If this option is not installed, some tests will be skipped.

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9.4.3 Test Revision

The MIL-STD 704 option is capable of performing all sub-sections of MIL-STD 704 revision D, E or F. A selection is made available to specify the revision of standard to be applied to the EUT.

The MIL704 option defaults to Revision E.

9.4.4 Tests Performed

9.4.4.1 STEADY STATE

AC Mode:

1. Steady State Voltage and Frequency test

2. Waveform Distortion test

3. Voltage Modulation test

4. Voltage Unbalance test

5. Phase Unbalance test

6. Frequency Modulation test

7. Voltage Modulation test

8. Transient Voltage low and high test

9. Transient Frequency low and high test

DC Mode:

1. Steady State Voltage test

2. Ripple test

9.4.4.2 EMERGENCY STATE

AC Mode:

1. Emergency Voltage minimum and maximum test

2. Emergency Frequency minimum and maximum test

DC Mode:

1. Emergency Voltage minimum and maximum test

9.4.4.3 ABNORMAL STATE

AC Mode:

1. Abnormal Voltage under

2. Abnormal Voltage over

3. Abnormal Frequency under

4. Abnormal Frequency under

DC Mode:

1. Abnormal Voltage under

2. Abnormal Voltage over

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9.4.5 Front Panel Operation MIL704

To perform a test from the keyboard, from the MENU screen, select the APPLICATIONS screen.

The APPLICATIONS screen will appear as shown in Figure 9-10.

Figure 9-10: Applications Menu

Scroll to the MIL-STD-704 entry using the up and down cursor keys. Press the ENTER key to

select the MIL704 main menu. One of the screens will appear as shown in Figure 9-11.

Note: The user has to turn on the Output relay before starting a test and set the steady state setup for the test. NOM FREQ must be set to match the desired steady state frequency. All

MIL704 revisions will accept 400Hz as a nominal frequency. Revision F only will accept 60Hz and

VFREQ.

Figure 9-11: MIL704 Menu

9.4.5.1 Revision Selection

The default Revision is E. Revisions supported are D, E and F. The Revision can be changed

from the front panel. Scroll to the REVISION entry using the up and down cursor keys (Figure

9-11). Use the shuttle to change the selection.

9.4.5.2 Nominal Frequency Selection

Three selections are available for the nominal frequency to be used:

400Hz, this selection is active in all revisions. Program frequency must be set to 400Hz.

VFREQ, this selection is active for revision F only. Program frequency must be set between 360Hz and 800Hz to run the tests.

60Hz, this selection is active for revision F only. Program frequency must be set to 60Hz to run the tests.

Note that the programmed frequency of the AC source must be the same as the selected nominal test frequency selected in the 704 screen. If not, a Setting Conflict error will be generated when attempting to run a test. The programmed frequency can only be changed from the normal setup screen. Selecting the nominal test frequency in the 704 Application screen does not change the output frequency programmed.

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9.4.6 Steady State AC Tests

Scroll to the NORMAL ST MENU entry using the up and down cursor keys. Press the ENTER

key to select the STEADY STATE screens. The screen will appear as shown in Figure 9-12

Figure 9-12: Steady State Menu

The MIL704 Steady state screens have the following tests:

1. VOLTAGE

2. FREQUENCY

3. VOLT UNBALANCE

4. PHASE DIFFERENCE

5. VOLT MODULATION

6. FREQ MODULATION

7. VOLT TRANSIENT

8. FREQ TRANSIENT

9. DISTORTION

The above tests can be selected by scrolling to the highlighted selection using the up and down cursor keys and the ENTER key to start the selected test.

VOLTAGE

This test will change the output voltage in the sequence shown in Table 9-12.

SEQUENCE

1

2

3

VOLTAGE

400Hz/VFREQ 60Hz only

108

118

115

110

125

115

Table 9-12: Steady state voltage

TIME

1 minute

1 minute

1 minute

The

key (backspace) will terminate the test at any time.

FREQUENCY

This test will change the output frequency in the sequence shown in Table 9-13.

SEQUENCE FREQUENCY TIME

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1

2

3

400Hz VFREQ 60 Hz

393 360 59

407

400

800

SSF

61

60

Table 9-13: Steady state frequency

1 minute

1 minute

1 minute

The

key (backspace) will terminate the test at any time.

VOLT UNBALANCE

This test will change the output voltage for the selected phase only in the following sequence:

112V for 1 minute.

118V for 1 minute.

115V for 1 minute.

The test will be repeated on three phase systems to include all three phases if the coupling is set to all.

The

key (backspace) will terminate the test at any time.

PHASE DIFFERENCE

This test applies to three phase systems only. The phase angle for the selected phase will change relative to phase A in the following sequence:

If phase B is selected:

236

for 1 minute.

244

for 1 minute.

240

for 1 minute.

If phase C is selected:

116

for 1 minute.

124

for 1 minute.

120

for 1 minute

VOLTAGE MODULATION

This test will vary the output voltage by

2.5V rms over a period of one second. The test will last for 2 minutes. The

key (backspace) will terminate the test at any time.

FREQUENCY MODULATION

REVISION

MODULATION

D

7Hz

E

4Hz

F (400Hz /VFREQ)

4Hz

F (60HZ)

0.5Hz

Table 9-14: Frequency Modulation

This test will vary the output frequency as defined by Table 9-14 over a period of one minute.

The test will last for 4 minutes. The

key (backspace) will terminate the test at any time.

WAVEFORM DISTORTION

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This test will generate a 5% THD voltage distortion on the output voltage waveform. Using a clipped sine wave causes the distortion. The test will last for 2 minutes. The

key (backspace) will terminate the test at any time.

HIGH VOLTAGE TRANSIENT

This test will change the output voltage for the selected phase in the following sequence:

For 400 Hz and VFREQ:

180V for 10msec.

Linearly reduced to118V in 78msec.

Stay at 118V for 87msec before returning to 115V.

For 60 Hz only:

170V for 1.67msec

Linearly reduced to 130V in 14msec.

Linearly reduced to 120V in 83.3msec.

Stay at 120V for 75msec.

Note: Prior to the test, a voltage range change may take place if the power source is set for the low voltage range. This will cause the EUT to lose power momentarily. If this is not acceptable, the power source must be left in high range at all times.

After this sequence, a 5 second delay will be inserted at the nominal test voltage. The

key

(backspace) will terminate the test at any time.

LOW VOLTAGE TRANSIENT

This test will change the output voltage for the selected phase only in the following sequence:

For 400 Hz and VFREQ:

80V for 10msec.

Linearly increase to108V in 70msec.

Stay at 108V for 95msec before returning to 115V.

For 60Hz only:

0V for 1.67msec.

Linearly increase to 70V in 14msec.

Linearly increase to 105V in 83.3msec

Stay at 105V for 75msec.

After this sequence, a 5 second delay will be inserted at the nominal test voltage. The

key

(backspace) will terminate the test at any time.

HIGH FREQUENCY TRANSIENT

This test will change the output frequency in the following sequence:

For 400Hz and VFREQ:

425Hz for 1 sec.

420Hz for 4 sec.

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410Hz for 5 sec.

407Hz for 4 sec.

For 60Hz only:

61Hz for 0.5 sec.

60.5Hz for 0.5 sec.

After this sequence, a 5 second delay will be inserted at the nominal test frequency. The

key

(backspace) will terminate the test at any time.

LOW FREQUENCY TRANSIENT

This test will change the output frequency in the following sequence:

For 400Hz and VFREQ:

375Hz for 1 sec.

380Hz for 4 sec.

390Hz for 5 sec.

393Hz for 4 sec.

For 60Hz only:

59Hz for 0.5 sec.

59.5Hz for 0.5 sec.

After this sequence, a 5 second delay will be inserted at the nominal test frequency. The

key

(backspace) will terminate the test at any time.

9.4.7 EMERGENCY AC TESTS

From the MIL704 main menu (Figure 9-11) scroll to the EMERGENCY entry using the up and

down cursor keys. Press the ENTER key to select the EMERGENCY screens. The screen will

appear as shown in Figure 9-13.

Figure 9-13: Emergency Menu

The EMERGENCY SCREEN has the following tests:

1 VOLTAGE

2 FREQUENCY

The above tests can be selected by scrolling to the highlighted selection using the up and down key and the ENTER key to start the selected test.

Note: These tests are only required for revision D. See steady state voltage and frequency tests for all other revisions.

VOLTAGE

This test will change the output voltage in the following sequence:

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104V for 1 minute.

122V for 1 minute.

115V for 1 minute.

The

key (backspace) will terminate the test at any time.

FREQUENCY

This test will change the output frequency in the following sequence:

360Hz for 1 minute.

440Hz for 1 minute.

400Hz for 1 minute.

The

key (backspace) will terminate the test at any time.

9.4.7.1 ABNORMAL TEST

From the MIL704 main menu (Figure 9-11) scroll to the ABNORMAL AC entry using the up and

down cursor keys. Press the ENTER key to select the ABNORMAL screens. The screen will

appear as shown in Figure 9-14.

Figure 9-14: Abnormal Screens

The ABNORMAL SCREEN has the following tests:

1. OVER VOLTAGE

2. UNDER VOLTAGE

3. OVER FREQUENCY

4. UNDER FREQUENCY

The above test can be selected by scrolling to the highlighted selection using the up and down key and the ENTER key to start the selected test.

OVER VOLTAGE

This test will change the output voltage for the selected phase in the following sequence:

For 400Hz and VFREQ:

180V for 50msec.

The voltage gradually decays with time to 125 volt by the following equation:

V = 124.6 + 2.77/t. For 0.05

t

6.925

Stay at 125V for 93 seconds before returning to 115V.

For 60Hz only:

180V for 3.34msec

The Voltage gradually decays with time to 122 volt by the following equation:

V = 121.7 + 0.583/t. For 0.00334

t

1.947

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Stay at 122V for 8 seconds before returning to 115V.

Note: Prior to the test, a voltage range change may take place if the power source is set for the low voltage range. This will cause the EUT to loose power momentarily. If this is not acceptable, the power source must be left in high range at all times.

The

key (backspace) will terminate the test at any time.

UNDER VOLTAGE

This test will change the output voltage for the selected phase in the following sequence:

For 400Hz and VFREQ:

0V for 7 seconds.

100V for 93 seconds.

For 60Hz only

0V for 2 seconds.

100V for 8 seconds.

The

key (backspace) will terminate the test at any time.

OVER FREQUENCY

This test will change the output frequency in the sequence shown in Table 9-15 before returning

to the steady state frequency.

The

key (backspace) will terminate the test at any time.

Revision

Seq1

Seq2

D E F

Table 9-15: Abnormal Over Frequency

F 60Hz only

FREQ Time FREQ Time FREQ TIME FREQ TIME

480Hz 5sec. 480Hz 5sec. 480Hz 5sec 61Hz 7sec

420Hz 5sec 420Hz 9sec 420Hz 5sec 60.5Hz 8sec

After this sequence, a 5 second delay will be inserted at the nominal test frequency. The

key

(backspace) will terminate the test at any time.

UNDER FREQUENCY

This test will change the output frequency in the sequence shown in Table 9-16 before returning

to steady state frequency.

The

key (backspace) will terminate the test at any time.

Revision

Seq1

Seq2

D E F F 60Hz only

FREQ Time FREQ Time FREQ TIME FREQ TIME

0 5sec. 0Hz 7sec. 0Hz 7sec 0Hz 7sec

375Hz 5sec 380Hz 7sec 380Hz 3sec 59.5Hz 8sec

Table 9-16: Abnormal Under Frequency

After this sequence, a 5 second delay will be inserted at the nominal test frequency. The

key

(backspace) will terminate the test at any time.

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9.4.8 DC Tests

If the output voltage is set for 28V DC or 270V DC the MIL704 DC Main selection screen will

appear as seen in Figure 9-15.

Figure 9-15: MIL704 DC Menu

9.4.8.1 Steady State Test

Scroll to the NORMAL ST MENU entry using the up and down cursor keys. Press the ENTER

key to select the STEADY STATE screen. The screen will appear as shown Figure 9-16.

Figure 9-16: Steady State DC

The MIL704 STEADY STATE screen has the following tests:

1 VOLTAGE

2 RIPPLE

The above tests can be selected by scrolling to the highlighted selection using the up and down key and the ENTER key to start the selected test.

VOLTAGE

This test will change the output voltage for the selected phase in the following sequence:

1. 28V system:

22V for 1 minute.

29V for 1 minute.

28V for 1 minute.

2. 270V system:

250V for 1 minute.

280V for 1 minute.

270V for 1 minute.

The

key (backspace) will terminate the test at any time.

DC RIPPLE

This test will impose a 400Hz frequency component to the output voltage. The test will last for 2 minutes. The level of the ripple is as follows:

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1. 28V system:

1.5V.

2. 270V system:

6.0V.

The

key (backspace) will terminate the test at any time.

9.4.8.2 Transient Test

From the MIL704 DC MENU scroll to the TRANSIENT DC entry using the up and down cursor keys. Press the ENTER key to select the TRANSIENT screen. The screen will appear as shown

in Figure 9-17.

Figure 9-17: Transient Menu

The Transient Test has the following tests:

1 HIGH VOLTAGE

2 LOW VOLTAGE

HIGH VOLTAGE

This test will change the output voltage for the selected phase in the following sequence:

1. 28V System

50V for 12.5 msec.

Linearly reduce to29V in 70msec.

Stay at 29V for 92.5msec before returning to 28V.

2. 270V System

330V for 20 msec.

Linearly reduce to280V in 20msec.

Stay at 280V for 135msec before returning to 270V.

Prior to the test, a range change may take place if the power source is set for the low voltage range.

The

key (backspace) will terminate the test at any time.

Note: A range change will result in momentary loss of power to the EUT. If this is not acceptable, the power source must be left in high range at all times.

LOW VOLTAGE

This test will change the output voltage for the selected phase in the following sequence:

1. 28V System

18V for 15 msec.

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Linearly increase to 22V in 85msec.

Stay at 22V for 75msec before returning to 28V.

2. 270V System

200V for 10 msec.

Linearly increase to 250V in 30msec.

Stay at 250V for 135msec before returning to 270V.

The

key (backspace) will terminate the test at any time.

9.4.8.3 Abnormal Test

From the MIL704 DC MENU scroll to the ABNORMAL DC entry using the up and down cursor keys. Press the ENTER key to select the ABNORMAL screen. The screen will appear as shown

in Figure 9-18.

MX15

Figure 9-18: Abnormal Test Screen

The Abnormal Test has the following tests:

1 OVER VOLTAGE

2 UNDER VOLTAGE

The above tests can be selected by scrolling to the highlighted selection using the up and down cursor keys and the ENTER key to start the selected test.

OVER VOLTAGE

This test will change the output voltage for the selected phase in the following sequence:

1. 28V system:

50V for 50msec.

The voltage gradually decays with time to 31.5 volts by the following equation:

V = 31.38 + 0.93/t. for 0.05

t

7.758

Stay at 31.5V for 92.242 seconds before returning to 28V.

2. 270V system:

350V for 50msec.

The voltage gradually decays with time to 290 volts by the following equation:

V = 289.6 + 3.02/t. for 0.05

t

7.55

Stay at 290V for 92.45 seconds before returning to 270V.

Prior to the test, a range change may take place if the power source is set at the low voltage

range. Note: See Section 9.4.6 under HIGH VOLTAGE TRANSIENT.

The

key (backspace) will terminate the test at any time.

Note: A range change will result in momentary loss of power to the EUT. If this is not acceptable, the power source must be left in high range at all times.

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UNDER VOLTAGE

This test will change the output voltage for the selected phase in the following sequence:

1. 28V system:

0V for 7sec.

20V for 93sec.

2. 270V system:

0V for 7sec.

240V for 93sec.

The

key (backspace) will terminate the test at any time.

9.4.8.4 Emergency Test

From the MIL704 DC MENU scroll to the EMERGENCY DC entry using the up and down cursor

keys (Figure 9-19). Press the ENTER key to start the EMERGENCY TEST.

Figure 9-19: Emergency Test

VOLTAGE

This test will change the output voltage for the selected phase in the following sequence:

1. 28V system:

18V for 1 minute.

29V for 1 minute.

28V for 1 minute.

2. 270V system:

250V for 1 minute.

280V for 1 minute.

270V for 1 minute.

The

key (backspace) will terminate the test at any time.

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9.5 Option

–ABD: Airbus ABD0100.1.8 Test

For information regarding the operation of the ABD0100.1.8 tests with the MXGui, please refer to the Avionics Software Manual (CI part no. 4994-971 included on CDROM).

9.6 Option

–787: Boeing B787-0147 Test

For information regarding the operation of the Boeing B787-0147 tests with the MXGui, please refer to the Avionics Software Manual (CI part no. 4994-971 included on CDROM).

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9.7 Option

–WHM: Watt Hour Measurement

9.7.1 General

This section describes the WHM option available for the MX Series Power Source.

9.7.2 Specification

All specifications are the same as the standard MX Power Source specifications in addition to the following specifications:

Watt-hour

0-6.000KW

>6.000KW

9.7.3 Local Operation

0.2%FS +0.1%R

0.5%FS +0.1%R

<100 Hz

100-819 Hz

Times three of the above specification

From the APPLICATIONS menu screen, use the up and down key to position the cursor to the

WHM field. Press the Enter Key.

The WATT-HOURS METER screen shown in Figure 9-20 has the following fields:

Figure 9-20: Watt-Hour Meter Screen

1. WHM STATE: This field will activate the watt-hour measurements. Moving the shuttle clockwise when the field is highlighted will activate the watt-hour function and the field will change to ON as

shown in Figure 9-20.

2. ETIME: This field will accumulate the time in hours, minutes and seconds.

3. WATT HR: This field will accumulate the watt-hour in KWH.

Figure 9-21: WH-Meter Screen with Function Active

Note

: Changing from ON to OFF will stop the measurement and will maintain the last data record for the watt-hour meter. To restart the measurements, the field is toggled to the ON position from the OFF position and the previous data will be reset to zeros.

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9.8 Option

–411: IEC 61000-4-11 Voltage Dips and Interruptions

9.8.1 General

The IEC 61000-4-11 option is capable of performing IEC 61000-4 section 11 voltage dips, short interruptions and voltage variations immunity tests. On MX15 Series AC sources, the user can only perform single phase tests.

Operation of the

9.8.2 Front Panel Entry

No front panel operation is available for the IEC 61000-4-13 option on the MX15 Series AC power source. Instead, use of the provided MXGUI Windows software is required to use this option.

The -411 option can be programmed using SCPI bus commands. For details, refer to the MX

Series programming manual P/N 7003-961.

9.8.3 Standard Revisions and EUT Classes

The

–411 option supports both the first (1994-06) and the second edition (2004-03) of the IEC

61000-4-11 test standard.

Generic tests files are distributed with the MXGui program for both editions of the test standard.

Files applicable to Edition 2.0 have ED20 in their file name. Do not mix these files, as the data setup will not be correct if you do. To load a test file, select the Mode (Dips or Vars) and test standard revision first, then use the File, Open menu to load the test parameters. Test parameters can be a function of the EUT class. The different files provided with the program cover the various EUT classes. The relevant EUT class 1, 2, 3 or X is listed in the file names.

Refer to the MXGUI on line help for information on using the IEC411 test screen..

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9.9 Option

–413: IEC 61000-4-13 Interharmonics Test

9.9.1 General

The IEC413 option is capable of performing IEC 61000-4 section 13 Harmonics and inter harmonics low frequency immunity tests. The tests are based on IEC 61000-4-13:2002-03, First

Edition. It is assumed that the user has a copy of the test standard available.

9.9.2 Initial Setup

The user must set the operating voltage and close the output relay prior to the start of test. The following set of parameters must be set before the start of test.

1. Frequency to 50 or 60 Hz.

2. Voltage mode to AC.

3. Waveform to sine wave.

9.9.3 Front Panel Entry

No front panel operation is available for the IEC 61000-4-13 option on the MX15 Series AC power source. Instead, use of the provided MXGUI Windows software is required to use this option.

The -413 option can be programmed using SCPI bus commands. For details, refer to the MX

Series programming manual P/N 7003-961.,

9.9.4 Tests Performed

The IEC1000-4-13 test consists of several types of tests. These tests can be run individually or in sequence (ALL). The following tests are available:

1. Harmonic combination test flat curve and over swing.

2. Sweep in frequency and resonance frequency detection.

3. Individual harmonics and inter harmonics.

4. Meister curve test.

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9.9.4.1 INTERHARMONICS

A single inter harmonic frequency may be generated using the INTERHARMONICS screens.

This screen allows insertion of any inter harmonic from 1Hz to 2400Hz in 1Hz steps. The amplitude level of the harmonics range is from 0 to 20% of the programmed voltage. To select the inter harmonics screen, press the menu key until the APPLICATION entry appears. Select the APPLICATION with the ENTER key. Using the up or down key follows by the ENTER key to select INTER HARMONICS screens.

Figure 9-22: APPLICATION SCREEN

INTERHARMONICS SCREEN

The inter harmonics screen will appear as shown in Figure 9-23. Use the up and down keys to move between the screens. The screens have the following parameters:

Figure 9-23: INTERHARMONICS SCREENS

1. REFERENCE

2. REF. COUPL

3. REF. VOLT

4. VOLT

This field will enable the Inter harmonics generator if ON is selected and will disable the inter harmonics generation if OFF is selected.

If turned on, the REF. VOLT will follow the programmed voltage value.

This field must be programmed to a value if REF. COUPL is off. This value has a range from 0 to 230 volts. This value is set to a value equal to the phase A voltage if the REF. COUPL is turned on.

This field programs the Inter harmonic level in percentage of the

REF.VOLT. This value has a range from 0 to 20%

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9.10

Option

SNK: Current Sink (AC or DC)

9.10.1 General

This section describes the SNK option available for the MX Series Power Source.

9.10.2 General Description

The

–SNK or current sink option enables the MX power source to sink current from the unit under test. This mode of operation is particularly useful when testing grid-tied products that feed energy back onto the grid. The ability of the MX to simulate the grid provides unique opportunities to test the EUT for immunity to commonly occurring line anomalies like voltage and/or frequency fluctuations. Typical examples of these types of EUT’s are solar and/or wind power inverters.

The SNK option requires special amplifiers that have a different control loop from the standard

MX amplifiers. This different control loop ensures greater stability under regenerative load conditions. Due to this modified characteristic however, the upper frequency limit of an MX configured with the

–SNK option is reduced to 500Hz from the standard 819Hz.

Regenerative Mode of operation The MX will automatically operate in regenerative mode when the measured current and power is negative, indicating energy is being fed back into the MX amplifiers. In this mode of operation, the current limit mode will behave differently than it does under normal load conditions.

When the absolute value of the current exceeds the programmable current limit set point (current limit is set in the REGENERATE CONTROL screens), the output voltage of the MX will be increased gradually in an attempt to reduce the amount of current being fed back. Note that there is no other way for the MX to limit the current as the current is not generated by the MX itself but rather by the load (inverter). Consequently, normal current limit operation does not apply in this mode of operation. The voltage will continue to be raised until the user set over voltage trip point is reached. This trip level can be set in the REGENERATE CONTROL screen located under the APPLICATIONS SETUP 2 screen. A t this point, and after the delay set by the “DELAY

F” parameter is reached, the AC frequency will be shifted by the amount set in the dFREQ parameter field. The dFREQ is irrelevant for the DC SNC operation. A consideration in the AC

SNC mode is the fact that most AC inverters will shut down when detecting a sudden change in frequency. If the frequency shift (dFREQ) is set to zero however, the output voltage will be dropped to the under voltage limit setting (UNDER VOLT) set in the REGENERATE CONTROL screen instead of the frequency shift. At this point, the EUT should shut down due to an under voltage condition. Finally, the output replay is opened after the user set delay expires. This will happen regardless of the EUT state.

For the DC SNC mode the MX must be set to the DC Voltage mode and voltage range that accepts the maximum desired set voltage. The OL Mode must be set to constant current (CC)

MX15

To prepare the MX for regenerative mode, The Regenerative state must be set to ON. The dFREQ is irrelevant for DC operation.

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The key for constant current operation is the maximum allowable voltage for the MX can supply the UUT above the set voltage. This value is the OVOLT. The OVOLT value must be above the set voltage for the power source. If this value is left at the set voltage or lower, the MX will not operate at constant current in regenerative mode. The

UVOLT is used to shut the UUT if the MX could not maintain the current at set CURR value in the regenerative screens after a time specified by the DELAY. If the UVOLT will not control the shutdown of the UUT, then this value should be set the same as the

OVOLT. This will eliminate excessive current before the shut down.

9.10.3 REGENERATE Control Screen

Figure 9-24: REGENERATE CONTROL screen

The

–SNK option mode of operation is controlled by parameters set in the REGENERATE

CONTROL SCREENS. Access to this screen is from the APPLICATIONS screen by selecting the REGEN entry and pressing the ENTER key.

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Field

The following parameters are available to be programmed by the user.

Description Setting Range Purpose

STATE

UNDER VOLT

Enable the

Regenerate function

EUT under voltage limit

ON/OFF

0.0 to max V range value

This field allows the regenerative mode of operation to be enabled. The regenerative state can only be enabled if the relay is open and the frequency is set between 40Hz and 80 Hz. If the state ids off the MX operates like the normal MX without the SNK option installed. In normal mode only 20% of normal operating current can sunk and the MX will generate errors 31 and 32.

Sets the EUT shut off voltage, Active only if the dFREQ listed below is set to zero. This is the voltage (AC or DC) at which the EUT will shut off.

If set to a value that will allow the EUT to continue operating, the MX may be unable to limit the current being fed back by the EUT.

OVER VOLT dFREQ

DELAY F*

DELAY R*

EUT over voltage limit

Delta Frequency

Frequency Shift application delay time.

Output Relay

Open delay time.

0.0 to max V range value

0.0 to 6.0 Hz

Sets the EUT over voltage limit. This is the maximum allowable voltage (AC or DC) at which the EUT can operate. The output voltage may be increased up to this level if the current limit is exceeded in an effort to keep the current below the set current limit value.

This setting determines the size of the frequency shift that will be applied to the EUT after the current limit has been exceeded. If set to 0.0 Hz, no frequency shift will be applied.

0.25 to 5.00 sec This delay determines how long the MX waits to apply the programmed frequency shift to the

EUT after the set current limit level has been exceeded.

0.25 to 5.00 sec This delay determines how long the MX waits to open the output relay after the frequency shift has been applied and the current still exceeds the set current limit level. If the frequency shift is set to 0.0Hz, this setting determines the time the output relay will be opened after the UNDER

VOLTAGE is applied

PREVIOUS

SCREEN

Returns to previous screen.

NOTE: DELAY F and DELAY R are linked together as DELAY when entered from the front panel.

Parameters set in the REGENERATE CONTROL screens are retained in non-volatile memory between uses. They are NOT part of the setup registers however. Thus, only one set of parameters is retained reflecting the last used settings with the exception of the STATE which is always OFF at power up.

The same SNK parameters can also be programmed over any of the available remote control interfaces using SCPI commands. Refer to the MX Programming Manual for details on programming syntax.

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10 . Error Messages

Any errors that occur during operation from either the front panel or the remote control interface will result in error messages. Error messages are displayed in the upper left hand corner of the

LCD display. They are also stored in the error message queue from which they can be queried using the SYST:ERR? Query. The error queue has a finite depth. If more error messages are generated than can be held in the queue, a queue overflow message will be put in the last queue location. To empty the queue, use the error query until the No Error result is received.

Errors appearing on the LCD will generally remain visible until the user moves to another screen.

If multiple error messages are generated in succession, only the last message will be visible as there is only space for one error message on the LCD display.

The same area of the display is also used to display status messages. While error messages always have a negative error number, status messages have a positive number.

The table below displays a list of possible error and status messages along with their possible cause and remedy.

Number Message String

0

-100

"No error"

"Command error"

-102

-103

-104

-108

-109

-110

"Syntax error"

"Invalid separator"

"Data type error"

"Parameter not allowed"

"Missing parameter"

Cause

No errors in queue

Unable to complete requested operation

Remedy

Unit may be in a mode inconsistent with request.

Command syntax incorrect. Misspelled or unsupported command

SCPI separator not recognized

See SCPI section of programming manual.

Data type invalid.

One or more additional parameters were received.

Too few parameters received for requested operation

Check command for supported data types

Check programming manual for correct number of parameters

Check programming manual for correct number of parameters

Command header incorrect Check syntax of command.

-111

-112

-113

"Command header error"

"header separator error"

"Program mnemonic too long"

"Undefined header"

-120

-121

-123

-128

-168

-200

"Numeric data error"

"Invalid character in number"

"Exponent too large"

"Numeric data not allowed"

"Block data not allowed"

"Execution error"

Invalid command separator used.

Syntax error

Command not recognized error

Data received is not a number

Number received contains non-numeric character(s)

Exponent in number exceeds limits

Number received when number is not allowed.

Block data was sent.

Command could not be

Use semi-colon to separate command headers

Check programming manual for correct command syntax

Check programming manual for correct command syntax

Check programming manual for correct command syntax

Check programming manual for correct command syntax

Check programming manual for correct parameter range

Check programming manual for correct command syntax

Check programming manual for correct command syntax

Command may be inconsistent

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Number

-201

-203

-210

-211

-213

-220

-221

-222

-223

-224

-226

-241

-254

-255

-256

-257

-283

-300

Message String

"Invalid while in local"

"Command protected"

"Trigger error"

"Trigger ignored"

"Init ignored"

"Parameter error"

"Setting conflict"

"Data out of range"

"Too much data"

"Illegal parameter value"

"Hardware missing"

"Media full"

“Directory full”

Parameter data outside of allowable range.

More data received than expected

Parameter value is not supported

"Lists not same length" One or more transient lists programmed has different length.

N/A

No storage space left to save settings or data.

Too many waveform directory entries

“File name not found”

Waveform requested not in directory

“File name error”

Incorrect filename

“Illegal variable name”

"Device specific error"

Cause

executed

Command issued but unit is not in remote state

Command is locked out

Problem with trigger system.

Trigger request has been ignored.

Initialization request has been ignored

Parameter not allowed.

Requested setting conflicts with other setting in effect.

Variable name illegal.

Hardware related error

Remedy

with mode of operation such as programming frequency when in

DC mode.

Put instrument in remote state before issuing GPIB commands.

Some commands are supported by the unit but are locked out for protection of settings and are not user accessible.

Unit could not generate trigger for transient execution or measurement.

Trigger setup incorrect or unit was not armed when trigger was received. Check transient system or measurement trigger system settings.

Unit was told to go to armed state but was unable to do so.

Could be caused by incorrect transient system or measurement acquisition setup.

Incorrect parameter or parameter value. Check programming manual for allowable parameters

Check other settings. E.g. trying to program a DC offset while in

AC mode

Check programming manual for allowable parameter values

Check programming manual for number of parameters or data block size

Check programming manual for correct parameters

All lists must be of same length or transient cannot be compiled and executed.

N/A

Delete other settings or data to make room.

Delete one or more waveforms from waveform memory to make room.

Check waveform directory for waveform names present.

Too many or non ASCII characters used in waveform file definition.

Use ASCII characters only

Check hardware for proper

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Number Message String

-311

-314

-315

-330

-350

-400

-410

-420

-430

-440

1

2

3

4

5

"Memory error"

"Save/recall memory lost"

"Configuration memory lost"

"Self-test failed"

"Queue overflow"

"Query error"

"Query

INTERRUPTED"

"Query

UNTERMINATED"

"Query

DEADLOCKED"

"Query

UNTERMINATED"

"Output volt fault"

"Current limit fault"

"Temperature fault"

Cause

Waveform memory checksum error.

Query cannot be completed

Query incomplete.

Output voltage does not match programmed value.

Current limit exceeded.

Temperature of heat sink too high.

"External sync. error" Could not sync to external sync signal.

"Initial memory lost" Power on settings could

Remedy

operation.

May be the result of incomplete user-defined waveform download. Check interface and try downloading waveform again. Successful download may clear this error condition.

Alternatively, use

TRAC:DEL:ALL command to clear waveform memory.

Store setup in same register again.

User setup register contents lost

Hardware configuration settings lost.

Internal error

Contact CI service department at [email protected]

to obtain instructions on restoring configuration data.

Contact CI service department at [email protected]

Message queue full. Too many messages. Read status using SYST:ERR query until 0, "No Error" is received indicating queue empty.

Unable to complete query. Check programming manual for correct query format and parameters

Query issued but response not read.

Check application program for correct flow. Response must be read after each query to avoid this error.

Query incomplete. Check for terminator after query command.

Check application program for multiple queries

Check for terminator after query command.

Load exceeds current limit and unit is in Constant Voltage (CV) mode of operation. Reduce load or increase CL setting.

Output voltage is driven above programmed voltage by external influence (Load, voltage kickback, etc.)

Load exceeds current limit and unit is in Constant Voltage (CV) mode of operation. Reduce load or increase CL setting

Reduce load. Ensure proper airflow and exhaust clearance.

Check fan(s) for operation.

External sync signal missing, disconnected or out of range.

Save power on settings again to

MX15 179

User Manual

– Rev M

California Instruments

Number Message String

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

"Limit memory lost"

Cause

not be recalled.

Hardware configuration settings lost.

"System memory lost" Memory corrupted.

"Calibration memory lost"

Calibration data lost.

"Start angle must be first sequence"

Start phase angle in wrong place..

Remedy

overwrite old content.

Contact CI service department at [email protected]

to obtain instructions on restoring configuration data.

Recycle power.

Contact CI service department at [email protected]

to obtain instructions on restoring calibration data or recalibrate unit.

Start phase angles can only programmed at the start of a transient list. Once a transient is in progress, phase angle cannot be changed.

Switch to AC or AC+DC mode. "Illegal for DC" Operation not possible in

DC mode.

"Duplicate sequence" Transient list sequence number already used.

"Too many sequence" Number of transient list steps exceeds maximum.

"Trans. duration less then 1msec"

"Clock and sync must be internal"

"Input buffer full"

"EOS Fault"

User new or available sequence number instead.

Reduce the number of steps in the transient list. (Max = 32 for

Series I or 100 for Series II).

Check programmed lists. "Missing list parameter"

One or more transient list parameters missing.

"Voltage peak error " Peak voltage exceeds internal bus voltage

"Slew time exceed dwell"

"Illegal during transient"

"Output relay must be closed"

"Waveform harmonics limit"

Time needed to slew to final value is less than dwell time.

Operation requested not available while transient is running.

Operation not possible with open relay

Dwell time below minimum or 1 msec

Operation not possible with external clock

Too much data received.

Hardware error reported by

EOS option

Harmonic contents of user defined wave shape are

This error may occur when selecting user defined wave shapes with higher crest factors. Reduce programmed

RMS value.

Check dwell times in transient list settings. Increase dwell time or change slew rate for affected parameter.

Wait till transient execution is completed or abort transient execution first.

Close relay before attempting operation. E.g. transient execution requires output relay to be closed.

Increase dwell time to at least 1 msec.

Switch to internal sync.

(Default)

Break up data in smaller blocks.

Cycle power on EOS to reset error. If error persists, contact

CI service at [email protected]

for repair.

Reduce harmonic content or reduce fundamental frequency

MX15 180

User Manual - Rev M California Instruments

Number

23

29

30

31

32

Message String

"ALC or Impedance must be off"

“DC component exceeds limit”

“Amplifier fault”

“Warning negative power near li mit”

“Negative power fault”

Cause

too high and could damage amplifier.

Conflict between ALC and programmable impedance mode.

Remedy

programmed.

Turn off ALC to use programmable impedance. Turn off programmable impedance to use ALC.

Select AC+DC mode. The waveform selected contains a DC offset that exceeds the AC mode capability.

Amplifier fault.

Approaching limit on the amount of power that can be fed back into the supply by an active load. This is a warning only.

Too much power fed back.

Power source output disconnected.

Contact customer service.

Stop increasing power feedback into the power supply. Typically occurs when using AC inverters. If power increases further, an error 32 will be generated.

Reduce the amount of power being fed back into the power source.

Table 10-1: Error Messages

MX15 181

User Manual

– Rev M

Index

7

704 ................................................................ 155

A

AC input ............................................................. 34

Acoustic ..................................................... 20, 28 address

GPIB ............................................................ 86

IEEE ............................................................. 86

Airbus

DO160 ....................................................... 145

ALC state ............................................................. 78

Arbitrary waveforms

Frequency response restrictions.................. 99 arrow keys ....................................................... 67

B

Back key .......................................................... 68 baud rate ......................................................... 86 blinking parameter entry ........................................... 67 bus address setting .......................................................... 86

C

calibration password ................................................... 122

Calibration password ....................................... 89

CE” mark ......................................................... 20 circuit breaker .................................................. 65

Clock and Lock

Initialization .................................................. 58

Clock and Lock mode ...................................... 57

Clock and Lock Mode

Configuration ............................................... 57 clock mode ...................................................... 77 constant current............................................. 115

Constant Power ............................................... 28

Construction internal ......................................................... 19

Controllers programable................................................. 21

Cooling ............................................................ 19 current / voltage sensor ................................. 115 current limit .................................................... 111 custom waveforms .......................................... 97 creating ........................................................ 97 deleting ........................................................ 98 downloading ................................................. 98

California Instruments

D

DC offset

-HV range .................................................. 140

Dimensions ..................................................... 19

DIP switch ....................................................... 55

Distorted output ............................................ 130

DO160

Airbus ........................................................ 145

Option ........................................................ 141

DVM .............................................................. 115

E

Efficiency......................................................... 11

Emissions ....................................................... 20

Enter key ......................................................... 69 error messages ............................................. 176

-ES .................................................................. 22

External Sync

Clock/Lock................................................... 58

F

Finish paint............................................................. 19

Frequency Range ..................................... 13, 25 front panel ....................................................... 65 lock .............................................................. 68

Front panel

Lock ............................................................. 66

Function Strobe .............................................. 17

Functional Test ............................................... 60

Fuse check ................................................... 131

Fuses

Input .......................................................... 110

H

-HF .................................................................. 22

Hold-Up Time .................................................. 11

-HV restrictions ................................................. 140

I

IEC 61000-4-11

Edition 1.0 ................................................. 170

Edition 2.0 ................................................. 170

IEC413 option ............................................... 171

IEC413 Option .............................................. 170

IEEE-488......................................................... 18

Immunity ......................................................... 20

Inrush Current ................................................. 11 installation ....................................................... 34

Introduction ..................................................... 10

Isolation Voltage ............................................. 11

MX15 182

User Manual - Rev M

J

junction box ..................................................... 63

K

keypad ............................................................. 68 function ........................................................ 68

Keys

ES Option ..................................................... 22 knob ................................................................. 67

L

LAN .................................................................. 18 connector ..................................................... 54

MAC Address ............................................... 54

LCD viewing angle ............................................... 89

LCD display ..................................................... 69

LED ........................................................ 115, 129

LED indicators ............................................... 129

-LF ................................................................... 22

Line Current: .................................................... 11

Line Frequency ................................................ 11

Line VA: ........................................................... 11 list transient ................................................... 106

LOCAL key ...................................................... 68

Low Voltage PS ............................................. 115

M

MAC Address .................................................. 54 maintenance .................................................. 129

Material chassis ......................................................... 19

-MB .................................................................. 22

-MB Option ...................................................... 22

Meas key ......................................................... 68

Menu key ......................................................... 68

MIL-STD 704

Option ........................................................ 155

Modulator ....................................................... 111

Multi-cabinet .................................................... 55

N

Noise ............................................................... 12

O

Offset Voltage

DC ................................................................ 12

Options

-160 ............................................................ 141

-704 ............................................................ 155 oscillator ........................................................ 111 output frequency ..................................................... 75 noise spectrum ............................................ 29 on/off key ..................................................... 68

California Instruments voltage ......................................................... 75

Output Coupling ........................................ 12, 23 output relay ..................................................... 68

Output Status .................................................. 17 over current ................................................... 115

Overcurrent ..................................................... 19 overload .......................................................... 66

Overtemperature ............................................. 19

Overvoltage ..................................................... 19

P

Parallel ............................................................ 21 password calibration .................................................. 122

Password

Calibration ................................................... 89 phase angle .................................................... 75

Power Factor ................................................... 11 power on screens ............................................ 70 power-down..................................................... 56 power-on setting ............................................. 85

Programming manual ..................................... 10 pulse transient ............................................... 105

R

Regulation ....................................................... 78

Relay output .......................................................... 21

Remote control ................................................ 66

Remote Inhibit ................................................. 62 replacement parts ........................................ 137

RJ45 connector ..................................................... 54

RS232

Cable ........................................................... 51

Connector .................................................... 51

RS232 connector ............................................ 51

RS232C .......................................................... 18

S

Safety .............................................................. 20 sense ............................................................ 129 wiring ........................................................... 40

Set key ............................................................ 68

SET mode ....................................................... 67 setting baud rate ..................................................... 86

GPIB address .............................................. 86

Shock .............................................................. 20

Short Circuit current ......................................................... 19 shutdown ......................................................... 56 shuttle ............................................................. 67

SET mode ................................................... 67

Shuttle

IMMEDIATE mode ...................................... 67

MX15 183

User Manual

– Rev M status ............................................................... 66 step transient ................................................. 104 system interconnect ...................................... 110

System Interface ........................................... 115

T

temperature over .............................................................. 66

Temperature operating,storage ......................................... 20

Three phase .................................................. 110 top cover removal ...................................................... 131 transient execution ................................................... 109

Transient list execution ..................................................... 82 transients list .............................................................. 106 pulse .......................................................... 105 step ............................................................ 104 switching waveforms.................................. 108

Transients

Front panel data entry .................................. 84

Input ............................................................. 19

Trigger input BNC .................................................... 17

California Instruments output BNC .................................................. 17 troubleshooting ............................................. 129

Turn on ........................................................... 56

U

UP key ............................................................ 69

USB................................................................. 18 connector .................................................... 53

V

Vibration .......................................................... 20 viewing angle .................................................. 21 adjustment ................................................... 89 voltage drop cables .................................................... 38, 41 voltage rating .................................................. 33

W

Weight............................................................. 19

Wire Sizes ................................................. 38, 41 wiring input............................................................. 34

X

-XV range restrictions ................................................. 140

MX15 184

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