SGI Series DC Power Supplies

SGI Series DC Power Supplies
SGI Series DC
Power Supplies
Operation Manual
M550221-01 Rev U
www.programmablepower.com
About AMETEK
AMETEK Programmable Power, Inc., part of the Programmable Power Division of AMETEK, Inc.,
is the new 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 rackmounted industrial power subsystems, AMETEK Programmable Power is the proud manufacturer
of Elgar, Sorensen, California Instruments and Power Ten brand power supplies.
Headquarters, 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.
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
SGI Series DC Power Supplies Operation Manual © January 2013, 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
August 2013, Rev U
Part Number
M550221-01
Contact Information
Telephone:
800 733 5427 (toll free in North America)
858 450 0085 (direct)
Fax:
858 458 0267
Email:
sales@programmablepower.com
service@programmablepower.com
Web:
www.programmablepower.com
M550221-01 Rev U
iii
Product Family: SGI Series DC Power Supplies
Warranty Period: Five Years
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
1. 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 USA, 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.
2. 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.
M550221-01 Rev U
iv
IMPORTANT SAFETY INSTRUCTIONS
Before applying power to the system, verify that your product is configured properly for
your particular application.
WARNING!
Hazardous voltages might be present when covers are removed. Qualified
personnel must use extreme caution when servicing this equipment. Circuitry,
test points, and output voltages might be floating with respect to chassis
ground. Do not touch electrical circuits, and use appropriately rated test
equipment. A safety ground wire must be connected from the chassis to the
AC mains input when servicing this equipment.
WARNING!
This equipment contains ESD sensitive input/output connection ports. When
installing equipment, follow ESD safety procedures. Electrostatic discharges
might cause damage to the equipment.
Only qualified personnel, who understand and deal with attendant hazards in power
supplies, are allowed to perform installation and servicing.
Ensure that the AC mains input ground is connected properly to the chassis safety
ground connection. 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 mains input is de-energized prior to
connecting or disconnecting any cable.
In normal operation from the front panel, the operator does not have access to
hazardous voltages within the chassis. However, depending on the application
configuration, HIGH VOLTAGES HAZARDOUS TO HUMAN SAFETY might be
normally generated on the output terminals. The user must ensure that the output power
lines are labeled properly as to the safety hazards and that any possibility for 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.
M550221-01 Rev U
v
SAFETY SYMBOLS
WARNING: Electrical Shock Hazard
HAZARD: Strong oxidizer
GENERAL WARNING/CAUTION: Read the accompanying message for
specific information.
BURN HAZARD: Hot Surface Warning. Allow to cool before servicing.
DO NOT TOUCH: Touching some parts of the instrument without
protection or proper tools could result in damage to the part(s) and/or
the instrument.
TECHNICIAN SYMBOL: All operations marked with this symbol are to
be performed by qualified maintenance personnel only.
ELECTRICAL GROUND: This symbol inside the instrument marks the
central safety grounding point for the instrument.
M550221-01 Rev U
vi
FCC NOTICE
This equipment has been tested and found to comply with the limits for a Class A digital
device, pursuant to part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference when the equipment is operated in a
commercial environment.
This equipment generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this equipment in a residential area
is likely to cause harmful interference in which case the user will be required to correct
the interference at his own expense.
M550221-01 Rev U
vii
ABOUT THIS MANUAL
This manual has been written expressly for the Sorensen SGI Series of power supplies
that have been designed and certified to meet the Low Voltage and Electromagnetic
Compatibility Directive Requirements of the European Community.
These models have been designed and tested to meet the Electromagnetic
Compatibility directive (European Council directive 2004/108/EC; generally referred to
as the EMC directive) and to the requirements of the Low Voltage directive (European
Council directive 2006/95/EC, 93/68/EEC, dated 22 July 1993). In addition these
models have been found compliant with FCC 47 CFR Part 15, Subpart B107(e)
Class A, 109(g) Class A.
Since the Low Voltage Directive is to ensure the safety of the equipment operator,
universal graphic symbols have been used both on the unit itself and in this manual to
warn the operator of potentially hazardous situations (see Safety Instruction page).
viii
M550221-01 Rev U
CONTENTS
SECTION 1 OVERVIEW .......................................... 1-1
1.1
General Description ..................................................................................... 1-1
1.2
Specifications ............................................................................................... 1-3
1.2.1
Environmental Characteristics ........................................................................1-3
1.2.2
Electrical Characteristics ................................................................................1-3
1.2.3
SGI Series Voltage and Current Specifications ..............................................1-7
1.2.4
Physical Characteristics .................................................................................1-8
SECTION 2 INSTALLATION ................................... 2-1
2.1
Inspection ..................................................................................................... 2-1
2.2
2.3
Contents of Shipment .................................................................................. 2-1
Location and Mounting ................................................................................ 2-2
2.3.1
Rack Mounting ................................................................................................2-3
2.3.2
6U Chassis Removal from Rack.....................................................................2-3
2.4
Input/Output Connections ........................................................................... 2-4
2.5
Wire Selection .............................................................................................. 2-7
2.5.1
2.6
LOAD CONSIDERATIONS .......................................................................... 2-10
2.6.1
2.7
Wire Size ........................................................................................................2-7
Inductive and Stored-Energy Loads .............................................................2-10
Outline Drawings ........................................................................................ 2-11
SECTION 3 OPERATION ......................................... 3-1
3.1
Introduction .................................................................................................. 3-1
3.1.1
3.2
Front/Rear Panels...........................................................................................3-1
Basic Operation and Output Verification .................................................... 3-9
3.2.1
M550221-01 Rev U
Initial Setup .....................................................................................................3-9
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Contents
Sorensen SGI Series
3.2.2
Default Programming Menu ............................................................................3-9
3.2.3
Constant-Voltage Mode Operation ...............................................................3-10
3.2.4
Constant-Current Mode Operation ...............................................................3-11
3.2.5
Overvoltage Protection .................................................................................3-12
3.3
Initial Start-Up Displays ............................................................................. 3-13
3.4
Display Elements........................................................................................ 3-14
3.5
Navigation ................................................................................................... 3-15
3.6
Editing ......................................................................................................... 3-16
3.6.1
3.7
3.8
3.9
Aborting an Edit ............................................................................................3-17
Menu Map.................................................................................................... 3-18
3.7.1
Home Menu ..................................................................................................3-18
3.7.2
Default Programming Menu ..........................................................................3-18
3.7.3
Navigating from Home Menu Page 1 ...........................................................3-18
3.7.4
Navigating from Home Menu Page 2 ...........................................................3-19
3.7.5
Navigating from Home Menu Page 3 ...........................................................3-19
3.7.6
Sequence Menu............................................................................................3-20
3.7.7
Sequence Programming Operation ..............................................................3-20
3.7.8
Constant-Power Setup Menu .......................................................................3-21
3.7.9
Remote Menu ...............................................................................................3-21
3.7.10
Remote Control Screen Examples ...............................................................3-22
3.7.11
Warning Screens ..........................................................................................3-22
3.7.12
Other Screens...............................................................................................3-22
Programming/Operating Functions .......................................................... 3-22
3.8.1
Voltage, Current, and Overvoltage Protection Programming .......................3-22
3.8.2
Save ..............................................................................................................3-23
3.8.3
Recall ............................................................................................................3-24
3.8.4
Sequencing ...................................................................................................3-25
3.8.5
Constant-Power Mode ..................................................................................3-33
3.8.6
Home Timeout ..............................................................................................3-34
3.8.7
Display Brightness ........................................................................................3-34
3.8.8
Lock Key .......................................................................................................3-34
3.8.9
Language ......................................................................................................3-34
3.8.10
Info ................................................................................................................3-35
3.8.11
Remote .........................................................................................................3-35
3.8.12
System ..........................................................................................................3-38
3.8.13
Warning Screens ..........................................................................................3-39
Remote Analog Control Connector (J1).................................................... 3-39
3.10 Remote Current Programming .................................................................. 3-43
3.10.1
x
Remote Current Programming by Resistance ..............................................3-43
M550221-01 Rev U
Sorensen SGI Series
3.10.2
Contents
Remote Current Programming by Voltage Source .......................................3-44
3.11 Remote Voltage Programming .................................................................. 3-45
3.11.1
Remote Voltage Programming by Resistance .............................................3-45
3.11.2
Remote Voltage Programming by Voltage Source.......................................3-46
3.12 Remote Overvoltage Programming........................................................... 3-47
3.13 Remote Output On/Off Control .................................................................. 3-48
3.13.1
Remote Output ON/OFF by Contact Closure ...............................................3-48
3.13.2
Remote Output ON/OFF Control by External Source ..................................3-48
3.13.3
Remote Shutdown(S/D) ................................................................................3-49
3.14 Remote Sensing ......................................................................................... 3-50
3.15 Floating and Polarized Output ................................................................... 3-53
3.16 Parallel and Series Operation .................................................................... 3-54
3.16.1
Parallel Operation .........................................................................................3-54
3.16.2
Series Operation ...........................................................................................3-56
SECTION 4 CALIBRATION AND VERIFICATION.... 4-1
4.1
4.2
Introduction .................................................................................................. 4-1
4.1.1
Calibration and Verification Cycle ...................................................................4-1
4.1.2
Preparation .....................................................................................................4-1
Calibration and Verification Procedures..................................................... 4-2
4.2.1
Constant-Current Mode ..................................................................................4-3
4.2.2
Constant-Voltage Mode ..................................................................................4-3
4.2.3
Resistive-Control Programming Current Sources ..........................................4-4
4.2.4
Change Calibration Date ................................................................................4-5
4.3 Remote Isolated Analog Interface (Option) Calibration and Verification
Procedure............................................................................................................... 4-5
4.3.1
Constant-Current Mode ..................................................................................4-5
4.3.2
Constant-Voltage Mode ..................................................................................4-6
4.3.3
Change Calibration Date ................................................................................4-7
SECTION 5 MAINTENANCE ................................... 5-1
5.1
Introduction .................................................................................................. 5-1
5.2
Preventive Maintenance............................................................................... 5-1
5.3
Fuses............................................................................................................. 5-3
M550221-01 Rev U
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Contents
Sorensen SGI Series
LIST OF TABLES
Table 2–1. Maximum AC Current Ratings, PFC Models ............................................. 2-5
Table 2–2. Maximum AC Current Ratings, Non-PFC Models ....................................... 2-5
Table 2–3. Input/Output Connectors ........................................................................... 2-5
Table 2–4. Input Terminal Connections....................................................................... 2-6
Table 2–5. Output Terminal Connections .................................................................... 2-6
Table 2–6. Recommended Lugs ................................................................................. 2-6
Table 2–7. Recommended Sense Connector Tools .................................................... 2-6
Table 2–8. Minimum Wire Size ................................................................................... 2-7
Table 2–9. Wire Resistance and Voltage Drop, 20°C .................................................. 2-9
Table 3–1. Front Panel Controls and Indicators .......................................................... 3-2
Table 3–2. Rear Panel Connectors and Controls, Standard ........................................ 3-6
Table 3–3. Rear Panel Connectors and Controls, GPIB Option .................................. 3-7
Table 3–4. Rear Panel Connectors and Controls, Ethernet Option ............................. 3-8
Table 3–5. Analog Control Connector (J1), Designations and Functions................... 3-42
Table 5–1. Fuse Ratings ............................................................................................. 5-3
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M550221-01 Rev U
Sorensen SGI Series
Contents
LIST OF FIGURES
Figure 1-1. Model Number Decoding .......................................................................... 1-2
Figure 2-1. Diode Connection ................................................................................... 2-10
Figure 2-2. Installation Drawing, 3U Models 10V-30V ............................................... 2-12
Figure 2-3. Installation Drawing, 3U Models 40V-600V ............................................ 2-13
Figure 2-4. Installation Drawing, 3U Models 800V and 1000V ................................. 2-14
Figure 2-5. Installation Drawing, 6U Models 20kW-30kW......................................... 2-15
Figure 2-6. Rear Panel, Standard, 3U Models 10V-30V ............................................ 2-16
Figure 2-7. Rear Panel, GPIB Option, 3U Models 10V-30V ...................................... 2-17
Figure 2-8. Rear Panel, Ethernet Option, 3U Models 10V-30V ................................. 2-18
Figure 2-9. Rear Panel, Standard, 3U Models 40V-600V .......................................... 2-19
Figure 2-10. Rear Panel, GPIB Option, 3U Models 40V-600V .................................. 2-20
Figure 2-11. Rear Panel, Ethernet Option, 3U Models 800V and 1000V ................... 2-21
Figure 2-12. Rear Panel, Standard, 6U Models 20kW-30 kW ................................... 2-22
Figure 2-13. Rear Panel, GPIB Option, 6U Models 20kW-30 kW .............................. 2-23
Figure 2-14. Rear Panel, Ethernet Option, 6U Models 20kW-30 kW ......................... 2-24
Figure 2-15. Instructions for Assembly of AC and DC Covers ................................... 2-25
Figure 3-1. Front Panel Controls and Indicators (3U Model Shown) ............................ 3-1
Figure 3-2. Rear Panel Interface, Standard, 3U Models 10V-30V ............................... 3-3
Figure 3-3. Rear Panel Interface, GPIB Option, 3U Models 10V-30V .......................... 3-3
Figure 3-4. Rear Panel Interface, Ethernet Option, 3U Models 10V-30V ..................... 3-3
Figure 3-5. Rear Panel Interface, Standard, 3U Models 40V-600V ............................. 3-4
Figure 3-6. Rear Panel Interface, GPIB Option, 3U Models 40V-600V ........................ 3-4
Figure 3-7. Rear Panel Interface, Ethernet Option, 3U Models 800V and 1000V ........ 3-4
Figure 3-8. Rear Panel Interface, Standard, 6U Models 20kW-30kW .......................... 3-5
Figure 3-9. Rear Panel Interface, GPIB Option, 6U Models 20kW-30kW .................... 3-5
Figure 3-10. Rear Panel Interface, Ethernet Option, 6U Models 20kW-30kW ............. 3-5
Figure 3-11. Burn-in Sequence Example .................................................................. 3-30
Figure 3-12. Constant-Power Example ..................................................................... 3-33
Figure 3-13. Analog Control Connector (J1) Pin-Out ................................................. 3-40
Figure 3-14. Remote Current Programming Using Resistance .................................. 3-43
Figure 3-15. Remote Current Programming Using 0-5 VDC or 0-10 VDC Source ..... 3-44
Figure 3-16. Remote Voltage Programming Using Resistance ................................. 3-45
Figure 3-17. Remote Voltage Programming Using 0-5 VDC or 0-10 VDC Source ..... 3-46
Figure 3-18. Remote Overvoltage Programming Using DC Voltage Source .............. 3-47
Figure 3-19. Remote Output On/Off Control by Contact Closure ............................... 3-48
Figure 3-20. Remote Output On/Off Using Isolated AC or DC Source ...................... 3-48
Figure 3-21. Remote Output On/Off Using Isolated TTL/CMOS Source .................... 3-49
Figure 3-22. Remote Shutdown Using DC Voltage Source ....................................... 3-49
Figure 3-23. Remote Voltage Sensing Network ......................................................... 3-50
M550221-01 Rev U
xiii
Contents
Sorensen SGI Series
Figure 3-24. Remote Sense Connection at the Load, 10V-800V Models................... 3-51
Figure 3-25. Remote Sense Connection at the Load, 1000V Model .......................... 3-52
Figure 3-26. Parallel Connection and Remote Sense................................................ 3-55
Figure 4-1. Potentiometer Locations ........................................................................... 4-8
xiv
M550221-01 Rev U
SECTION 1
OVERVIEW
1.1
General Description
The Sorensen SGI Series are general purpose power supplies designed
specifically for laboratory test and systems applications requiring
programmable DC sources with good performance characteristics, such as
accuracy, regulation, and ripple/noise. These power supplies are constantcurrent/constant-voltage supplies with an automatic crossover feature.
A variety of user interfaces are available, ranging from manual front panel control
and standard non–isolated remote analog control, to optional GPIB or isolated
remote analog control.
Refer to Figure 1-1 for decoding of the SG Series model number.
M550221-01 Rev U
1-1
Overview
Sorensen SGI Series
SG I 100 X 100 C - 1A AA AJ
Control Designation
A = Analog
I = Intelligent
Modifications
Voltage
Process Options
4-15 kW = "X"
20-30 kW = "/"
Remote Control Options
Input Voltage Options
Current
For units up to 999 V/999 A, voltage and current are represented in numeric format, e.g., “100”
represents 100 V. For units at 1000 V/1000 A and above, the voltage and current are
represented by the format “xKx”, e.g., “1K0” represents 1000 V.
Option
Control Options
Description
A: Analog
I: Intelligent
Input Options
C: Input Voltage 208/230 VAC, 3-Phase
D: Input Voltage 380/400 VAC, 3-Phase
E: Input Voltage 440/480 VAC, 3-Phase
Remote Control
Options
0A: No Option
1A: IEEE-488.2 + RS-232C
1C: Ethernet + RS-232C
1D: Isolated Analog Interface
1E: Shaft Locks
2A: Combined Options 1A + 1D
2C: Combined Options 1A + 1E (SGA Only)
2G: Combined Options 1C + 1D
2H: Combined Options 1C + 1E (SGA Only)
2J: Combined Options 1D + 1E (SGA Only)
3C: Combined Options 1A + 1D + 1E (SGA Only)
3G: Combined Options 1C + 1D + 1E (SGA Only)
Process Options
AA: No option
AB: Certificate of Calibration (includes test data)
Modifications
AJ: Front panel dust filter (3U models only)
CV: 400Hz AC input at 208 VAC for 6U units only; does not
carry CE, CSA or UL certification; (standard in 3U models)
PF: Passive power factor correction to 0.9 for 40V to 800V
models; (standard in 10V-30V, 50V, and 1000V models)
Figure 1-1. Model Number Decoding
1-2
M550221-01 Rev U
Sorensen SGI Series
Overview
Specifications
1.2
The following subsections provide environmental, electrical, and physical
characteristics for the SGI Series power supplies.
Note: Specifications are subject to change without notice.
Note: The SGI Series power supplies are intended for indoor use only. Refer
to Section 2.3 for use/location requirements.
1.2.1
Environmental Characteristics
Parameter
Specification
Ambient Temperature
Operating
0 to 50C
Storage
-25 to 65C
Cooling
Forced convection with internal, linearly-variable-speed fans; vents on
front, sides and rear; units may be stacked without clearance above or
below.
Humidity
95% maximum, non-condensing, 0 to 50C; 45C maximum wet-bulb
temperature.
Altitude
5,000 ft (1,524 m) operating at full rated output power, derate 10% of
full power for every 1,000 ft (3,048 m) higher; non-operating to 40,000 ft
(12,192m)
Agency Approvals
CE Compliant: Certified to UL/CSA 61010 and IEC/EN 61010-1 by a
NRTL; LVD Categories: Installation Category II, Pollution Degree 2,
Class II Equipment, for Indoor Use Only;
EMC Directive, EN 61326:1998;
Semi-F47 Compliant
1.2.2
Electrical Characteristics
Note: Output voltage accuracy, regulation, and stability specifications are valid at the point
where the remote sense leads are connected.
Parameter
Specification
Input Power
Voltage
208/230 VAC ±10%, allowed range 187-253 VAC;
380/400 VAC ±10%, allowed range 342-440 VAC;
440/480 VAC ±10%, allowed range 396-528 VAC
Frequency
47 Hz to 63 Hz; 400 Hz at 208 VAC for 3U models; 400 Hz at
208 VAC for 6U models is an optional modification (“CV” in
model number) and does not carry CE, UL or CSA markings
Configuration
3–phase, 3–wire plus ground; not phase rotation sensitive;
neutral not used.
M550221-01 Rev U
1-3
Overview
Sorensen SGI Series
Parameter
Specification
Power Factor (at full rated load; 50/60Hz); contact factory for power factor of specific models
PFC models: 10V-30V, 50V,
1000V, and models with optional
modification, “PF”
Non-PFC models: 40V-800V
0.90, typical, for all AC input ratings; with passive power factor
correction (PFC)
0.75, typical, for 208/230 VAC input;
0.72, typical, for 380/400 VAC input;
0.69, typical, for 440/480 VAC input;
power factor is not solely determined by power supply input
characteristics, but is dependent on the level of DC output power
and interaction with the source impedance of AC mains.
Efficiency
87%, typical, at full load, nominal AC line
Hold-Up Time
1/2 cycle, typical, for loss of all three phases (6.4 ms, typical for
800V/1000V models); 3 cycle, typical, for loss of one phase;
sustained missing phase will result in shutdown of the output.
Rated Output Power
4-15 kW for 3U chassis for10V-30V models;
5-15 kW for 3U chassis for 40V-1000V models;
20-30 kW for 6U chassis for 60V-600V models;
maximum output power is the product of the rated output voltage
and current; for specific values refer to Section 1.2.3.
Load Regulation (specified for ±100% rated load change, at nominal AC input voltage)
Voltage
±0.05%, maximum, of rated output voltage for 10V- 30V models;
±0.02%, maximum, of rated output voltage for 40V-1000V
models
Current
±0.1%, maximum, of rated output current
Line Regulation (specified for ±10% change of nominal AC line voltage, at constant load)
Voltage
±0.05%, maximum, of rated output voltage for 10V-30V models;
±0.01%, maximum, of rated output voltage for 40V-1000V
models
Current
±0.05%, maximum, of rated output current
Temperature Coefficient
Voltage
±0.02%/C, maximum, of rated output voltage
Current
±0.03%/C, maximum, of rated output current
Stability
±0.05%, maximum, of rated output voltage or current, over 8 hrs
at fixed line, load, and temperature, after 30 min warm-up
Output Voltage Ripple/Noise
Refer to Ripple/Noise specifications in tables of Section 1.2.3.
Load Transient Response
1 ms, typical, to recover within 0.75% of rated output voltage for
load step change of 50% of rated output current
Output Voltage Rise Time
(with rated load, resistive)
10 ms, maximum, from 10-90% of programming change from
zero to rated output voltage for 10V-30V models;
100 ms, maximum, from 5-95% of programming change from
zero to rated output voltage for 40V-1000V models;
contact factory for values of specific models
1-4
M550221-01 Rev U
Sorensen SGI Series
Overview
Parameter
Output Voltage Fall Time
(with rated load, resistive)
Output Voltage Fall Time
(with no load)
Specification
10 ms, maximum, from 90-10% of programming change from
rated output voltage to zero for 10V-30V models;
contact factory for values of specific models
50 ms, maximum, from 90-10% of programming change from
rated output voltage to zero for 10V-30V models;
1.5 s, typical, from 100% to 10% of programming change from
rated output voltage to zero for 40V-1000V models;
contact factory for values of specific models
Front Panel Meter
Display Resolution
Voltage Accuracy
(to actual output)
Current Accuracy
4 digit
±(0.15% of rated output voltage + 0.1% of actual output + 1 digit)
for 10V-30V models;
±(0.1%, maximum, of rated output voltage + 1 digit) for
40V-1000V models
±(0.4%, maximum, of rated output voltage + 1 digit)
(to actual output)
Front Panel Programming
Voltage
±(0.1% of rated output voltage + 0.1% of actual output voltage)
for 10V-30V models;
±0.1%, maximum, of rated output voltage for 40V-1000V models
Current
±(0.4% of rated output current + 0.1% of actual output current)
for 10V-30V models;
±0.4%, maximum, of rated output current for 40V-1000V models
Overvoltage Protection (OVP)
±1%, maximum, of rated output voltage
Remote Sensing
Connection
Voltage accuracy/regulation specifications apply at the point
where the remote sense leads are connected.
1 V, maximum per line for 10V-20V models;
1.5 V, maximum per line for 30V model;
Line Drop
5%, maximum of rated output voltage per line for models, 40V to
less than 160V;
2%, maximum of rated output voltage per line for models greater
than or equal to 160V;
higher levels of line drop is allowed, but output voltage
regulation specifications no longer apply.
Line Drop Effect on Output
Voltage
Rated output voltage applies at the rear panel output terminals,
and line drop voltage subtracts from the voltage available at the
load terminals
Remote Analog Interface
Programming Accuracy
Voltage
±0.25%, maximum, of rated output voltage for 0-5 VDC range,
and ±0.5%, maximum, for 0-10 VDC range
Current
±1.0%, maximum, of rated output current for 0-5 VDC range,
and ±1.2%, maximum, for 0-10 VDC range for 10V-30V models;
M550221-01 Rev U
1-5
Overview
Sorensen SGI Series
Parameter
Specification
±0.8%, maximum, of rated output current for 0-5 VDC range,
and ±1.0%, maximum, for 0-10 VDC range for 40V-1000V
models
Overvoltage Protection (OVP)
±1%, maximum, of rated output voltage
Readback Monitor Accuracy
±0.5%, maximum, of rated output voltage
Voltage
(of actual output value)
Current
±1%, maximum, of rated output current
(of actual output value)
Resistive-Control Programming
Voltage
0–5 k for 0-100% of rated output voltage
Current
0–5 k for 0-100% of rated output current
Voltage-Control Programming
Voltage
0–5 VDC or 0–10 VDC for 0-100% of rated output voltage
Current
0–5 VDC or 0–10 VDC for 0-100% of rated output current
Overvoltage Protection (OVP)
0.25–5.5 VDC for 5-110% or rated output voltage
Remote Control/Monitor Interface
On/Off control via contact closure, 6-120 VDC or 12-240 VAC,
and TTL or CMOS gate; output voltage and current monitors;
output voltage, current, and OVP programming; summary fault
status
Output Isolation
Output Float Voltage
Negative Output Terminal
±300 V(PK), maximum, with respect to chassis ground;
exceeding the limit will be detected as a fault by a protective
supervisory monitor and shutdown of the output will be
executed; this condition will be latched, requiring reset to
resume normal operation.
Isolation of optional Isolated
Analog Interface (J1) to output
negative terminal
1000 V(PK), maximum; Isolated Analog Interface (J1 signals)
are galvanically isolated from negative output terminal; operation
of Isolated Analog Interface signals should be at SELV safety
voltage conditions to chassis ground.
Reference of standard NonIsolated Analog Interface (J1) to
output negative terminal
The standard Non-Isolated Analog Interface (J1 signals) is
connected to the negative output terminal and, therefore, is not
isolated from the output.
Parallel Operation
Parallel Group
Up to 5 units, of the same voltage rating, may be connected in
parallel for additional output current; specifications apply as for
single unit, with the exception that each additional paralleled unit
will add 0.3% to the output current accuracy. Contact factory for
applications requiring paralleling more than five units.
Series Operation
Series Group
1-6
Up to 2 units, of the same current rating, may be connected in
series for additional output voltage; see restrictions in Output
Isolation section.
M550221-01 Rev U
Sorensen SGI Series
1.2.3
Overview
SGI Series Voltage and Current Specifications
The following tables present the specifications for rated voltage and current, and ripple/noise for
the 10V-1000V models.
Ripple/ Ripple/
Rated Current, ADC
Rated
Noise** Noise*
Voltage,
RMS,
PK–PK,
4 kW
5 kW
8 kW
10 kW
12 kW
15 kW
VDC
mV
mV
††
0-10
††
0-15
††
0-20
††
0-30
0-400
N/A
0-800
N/A
0-1200
N/A
20
50
0-267
N/A
0-534
N/A
0-801
N/A
20
50
N/A
0-250
N/A
0-500
N/A
0-750
20
60
N/A
0-167
N/A
0-334
N/A
0-501
20
60
Ripple/
Noise**
RMS,
mV
Ripple/
Noise*
PK–PK,
mV
20
75
Rated Current, ADC
Rated
Voltage,
VDC
5 kW
10 kW
15 kW
20 kW
0-40
0-125
0-250
0-375
0-500
0-50
0-100
0-200
0-300
0-400
0-60
0-83
0-167
0-250
0-80
0-63
0-125
0-100
0-50
0-160
†
†
25 kW
†
0-625
†
30 kW
†
0-750
†
0-500
0-600
20
75
0-333
0-417
0-500
20
75
0-188
0-250
0-313
0-375
20
100
0-100
0-150
0-200
0-250
0-300
20
100
0-31
0-63
0-94
0-125
0-156
0-188
25
150
0-200
0-25
0-50
0-75
0-100
0-125
0-150
25
175
0-250
0-20
0-40
0-60
0-80
0-100
0-120
30
200
0-330
0-15
0-30
0-45
0-61
0-76
0-91
30
200
0-400
0-12
0-25
0-38
0-50
0-63A
0-75
30
300
0-500
0-10
0-20
0-30
0-40
0-50
0-60
50
350
0-600
0-8
0-17
0-25
0-33
0-42
0-50
60
350
0-800
0-6.2
0-12.5
0-18.7
0-25
80
500
0-1000
0-5
0-10
0-15
0-20
100
650
†
†
†
0-31.2
†
0-25
†
0-37.5
†
0-30
* PK-PK ripple/noise, over 20 Hz to 20 MHz bandwidth, is measured across a 1 µF capacitor at
the end of a 6’ load cable with the supply operating at full load and nominal AC line voltage.
** RMS ripple/noise, over 20 Hz to 300 kHz bandwidth, is measured directly across the output
terminals with the supply operating at full load and nominal AC input line voltage.
†
††
Power level not available in 6U models, but could be produced with paralleled 3U units; up to
75 kW could be produced by paralleling up to five power supplies. Paralleling will increase
ripple/noise.
Models from 10V-30V are not available in 6U chassis.
M550221-01 Rev U
1-7
Overview
1.2.4
Sorensen SGI Series
Physical Characteristics
Dimensions
3U Models,
3U Models,
6U Models,
10V-30V
40V-1000V
60V-600V
Width
19.00 in (48.26 cm)
Depth
From inner surface of front panel to maximum protrusion of protective covers at
rear panel; refer to installation drawings for chassis dimensions.
Height
19.00 in (48.26 cm)
19.00 in (48.26 cm)
28.09 in (71.35 cm)
25.46 in (64.67 cm)
27.18 in (69.04 cm)
5.25 in (13.34 cm)
5.25 in (13.34 cm)
10.5 in (26.67 cm)
40 lb (18 kg), (5 kW)
120 lb (54 kg), (20 KW)
60 lb (27 kg), (10 kW)
140 lb (64 kg), (25 kW)
80 lb (36 kg), (15 kW)
160 lb (73 kg), (30 kW)
65 lb (29 kg), (4 kW, 10V, 15V)
65 lb (29 kg), (5 kW, 20V, 30V)
Weight
85 lb (39 kg), (8 kW, 10V, 15V)
(nominal)
85 lb (39 kg), (10 kW, 20V, 30V)
110 lb (50 kg), (12 kW, 10V, 15V)
110 lb (50 kg), (15 kW, 20V, 30V)
Shipping
Weight
1-8
Contact factory for weights of specific models
M550221-01 Rev U
SECTION 2
INSTALLATION
2.1
Inspection
Inspect the shipping carton for possible damage before unpacking the unit.
Carefully unpack the equipment. Save all packing materials until inspection is
complete. Verify that all items listed on the packing slips have been received.
Visually inspect all exterior surfaces for broken knobs, connectors, or meters.
Inspect for dented or damaged exterior surfaces. External damage may be an
indication of internal damage. If any damage is evident, immediately contact
the carrier that delivered the unit and submit a damage report. Failure to do so
could invalidate future claims. Direct repair issues to Customer Service at 858458-0223 (local) or 1-800-733-5427 (toll free in North America).
2.2
Contents of Shipment
Depending on the model, configuration, and options available for your SGI
Series power supply, the ship kit may include additional parts and accessories.
Minimum items included in the ship kit:

AMETEK manuals CD-ROM (P/N M550008-01) containing the SGI Series
DC Power Supplies Operation Manual (this manual, P/N M550221-01),
and the SG manual for the digital interface options, IEEE 488.2/RS232
and Ethernet Programming Manual (P/N M550129-03).

Sense mating connector:
10V-800V models, (Molex P/N 39-01-4031) with loose contacts (Molex P/N 3900-0182)
1000V model, (Molex P/N 39-01-4041) with loose contacts (Molex P/N 39-010182)

J1 mating connector (Cinch P/N DB25P or equivalent) normally
shipped attached to rear panel J1

Backshell for J1 (DB25) mating connector (Cinch P/N DCH-B-001 or
equivalent)
M550221-01 Rev U
2-1
Installation
Sorensen SGI Series

Hardware for input/output terminal power connections:
3U, 4-15 kW, 10V-30V models: 1/2-13UNC-2B x 1.25" long, 4 ea, with
nut, washer, and lockwasher;
3U, 5-15 kW, 40V-600V models: 3/8-16UNC-2B x 1.0”, 2 ea, with nut,
washer, and lockwasher;
3U, 5-15 kW, 800V and 1000V models have studs, 1/4-20UNC-2B,
2 ea, with nut, washer, and lockwasher installed on rear panel;
6U, 20-30 kW: 3/8-16UNC-2B x 0.875", 2 ea, with nut and lockwasher,
for DC output; 1/4-20UNC-2B, 4 ea, with Keps nut for AC input.
 Front panel rack fastener, black screw:
3U, 10V -1000V models: 10-32UNC-2B x 0.5”, 4 ea;
6U, 20-30 kW: 10-32UNC-2B x 0.5”, 8 ea.
Note: If any of these parts are missing, contact Customer Service at 858458-0223 (local) or 1-800-733-5427 (toll free).
Optional accessories:
890-453-03: Paralleling Cable (for up to 5 units, requires one cable per unit
placed in parallel)
K550212-01: 3U Rack Slides (for 4 kW to 15 kW models)
K550213-01: 6U Rack Slides (for 20 kW to 30 kW models)
5550568-01: Front panel dust filter - field installation kit - 3U models only
5551082-01: Optional AC input cover kit - 3U models only
2.3
Location and Mounting
Refer to Sections 2.7 for dimensional and installation drawings.
WARNING!
This unit is intended for installation in a protected environment. Exposure to
conductive contaminants or corrosive compounds/gases that could be
ingested into the chassis could result in internal damage. To reduce the risk
of fire or electrical shock, install the SGI Series unit in a temperature and
humidity controlled indoor area.
CAUTION!
The unit should be provided with proper ventilation. The rear and both sides
of the unit should be free of obstructions. To ensure proper airflow, a
minimum 4" clearance from the rear air outlet is required. The unit should
not be installed in an ambient temperature greater than 50°C.
CAUTION!
No user serviceable parts inside; service to be performed by qualified
personnel only.
.
2-2
M550221-01 Rev U
Sorensen SGI Series
2.3.1
Installation
Rack Mounting
The SGI Series models are designed for mounting in a standard 19-inch
equipment rack compliant to EIA-310. If additional instrumentation is mounted
in the rack, no additional clearance is required above or below units of the SGI
Series.
Support the unit by using appropriate L-brackets or rack mount slides; suggested slides
are listed as follows:
Rack Mount Slide Kit:
5–15 kW units: AMETEK P/N K550212-01
20–30 kW units: AMETEK P/N K550213-01
Secure the front panel of the unit to the rack using the screws provided.
2.3.2
6U Chassis Removal from Rack
WARNING!
A minimum three-person lift is required for the 6U SGI Series
unit, which weighs up to 160 lb (73 kg) depending on the model.
The slides have a front disconnect feature and lock at full extension. To
disconnect and remove the chassis from the rack, depress the flat steel spring
(located on the slides) inward, and pull the chassis forward. To return the
chassis back into the rack from full extension, depress the flat steel spring
(located on the slides) inward, and push the chassis back.
When the chassis is at full extension, the flat springs are located
approximately 1” behind the front EIA RETMA rails. Access the springs with a
flat blade screwdriver or similar device to release from lock-out or to remove
the chassis from the rack. The slides can be mounted to the chassis with this
spring oriented on the top or the bottom of the slide.
M550221-01 Rev U
2-3
Installation
2.4
Sorensen SGI Series
Input/Output Connections
Refer to Table 2–1 for AC input current requirements and Section 1.2.3 for
output current specifications. Table 2–3 provides information on the external
input and output connections for the SGI Series models. Table 2–4 provides
input connections descriptions and Table 2–5 provides output connection
descriptions. Refer to Table 2–6 for input/output lug recommendations. The
recommended tools for crimping and extraction of the sense connector pins
are listed below in Table 2–7.
WARNING!
High voltage present at rear panel! Risk of electrical shock. Do not remove
protective covers on AC input or DC output. Refer to qualified service personnel.
WARNING!
The input and output voltages at the rear panel of the unit might be HAZARDOUS
LIVE. When rack-mounting or panel-mounting the unit, suitable safeguards must
be taken by the installer to ensure that HAZARDOUS LIVE voltages are not
OPERATOR accessible. OPERATOR access should only be to the front panel of
the unit.
WARNING!
A safety disconnect device for the AC mains input must be installed so that it is
readily accessible to the user
WARNING!
A properly sized input overcurrent protection device must be installed at the AC
mains input, either a circuit breaker or fuse having a rating of 25% over the
maximum AC input line currents listed in Table 2–1.
WARNING!
To prevent an electrical shock hazard, a safety ground wire must be connected
from the safety ground stud on the rear panel to the AC mains ground.
CAUTION!
Under no condition should the negative output terminal exceed 300V to earth
ground. Floating the negative output terminal subjects the internal control circuitry
of the power supply to the same potential as present at the negative output
terminal. In a unit with the standard Non-Isolated Analog Interface, the signals of
control connector, J1, would float at the same potential as the negative output
terminal. Damage might occur if the signals of the Non-Isolated Analog control
connector are connected to an external ground referenced device, due to
unintentional ground loop currents that this connection could generate. To correct
ground loop problems, it is advised to use the optional Isolated Analog Interface in
order to isolate the external signals from the internal control circuitry of the supply.
Refer to Section 1.2.2 of the specifications for additional information.
2-4
M550221-01 Rev U
Sorensen SGI Series
Installation
Model Ratings
Voltage
Model
Input Line Current, A (RMS)*
AC Input
Option
Code
Input
Voltage,
VAC
C
208/230
20
39
59
79
98
118
D
380/400
11
22
32
43
54
65
E
440/480
9
19
28
37
47
56
40V-1000V
5 kW 10 kW 15 kW 20 kW 25 kW 30 kW
4 kW
10V-15V
20V-30V
8 kW 12 kW
5 kW
10 kW 15 kW
C
208/230
16
32
47
N/A
N/A
N/A
D
380/400
9
17
26
N/A
N/A
N/A
E
440/480
7
15
22
N/A
N/A
N/A
C
208/230
N/A
N/A
N/A
20
39
59
D
380/400
N/A
N/A
N/A
11
22
32
E
440/480
N/A
N/A
N/A
9
19
28
* AC input current could vary as a result of actual power factor; refer to specifications section for
power factor dependency
Table 2–1. Maximum AC Current Ratings, PFC Models
Model Ratings
Voltage
Model
Input Line Current, A(RMS)*
AC Input
Option
Code
Input
Voltage,
VAC
C
208/230
24
47
71
95
118
142
D
380/400
13
27
40
54
67
81
E
440/480
12
24
36
49
61
73
40V-800V
5 kW 10 kW 15 kW 20 kW 25 kW 30 kW
* AC input current varies depending on actual power factor; refer to specifications section on power
factor
Table 2–2. Maximum AC Current Ratings, Non-PFC Models
Connector
Function
Connection
L1 – AC, L2 – AC, L3 – AC,
Chassis - GND
AC input power; see Table 2–4
AC mains 3-phase
input
Pos. Bus Bar,
Neg. Bus Bar
DC output power; see Table 2–5
User load
Control interface; see Table 3–5
User controller
Remote Sense Connector
Remote voltage sensing; see Section 3.14
Output load
Parallel In/Out
Parallel operation; see Section 3.16
Master/Slave units
Analog Interface
Connector (J1)
Table 2–3. Input/Output Connectors
M550221-01 Rev U
2-5
Installation
Sorensen SGI Series
Connections
Power Supply Type
AC Input
Connection Description
20 kW to 30 kW, 6U
AC Input
Feed-Through terminal block with
compression terminals
Bus Bar with holes for 1/4"–20 bolts
All 3U and 6U
Chassis Safety Ground
1/4-20 stud
4 kW to 15 kW, 3U
Table 2–4. Input Terminal Connections
CAUTION!
To prevent damage to the AC input connector of the 3U units, follow torque
specifications, and, if a wire ferrule is used, ensure that it is properly sized
and that it has been crimped with the appropriate ferrule crimping tool.
AC Input Connector for 3U Models

Recommended torque for the AC input connector screws: 17.7 in-lb to 20.4 inlb (2 Nm to 2.3 Nm).

Wire ferrules are recommended, properly sized to match the wire gauge; use
appropriate crimp tool for the ferrule size.

Wire insulation should be stripped to 5/8”, maximum.

For more information on the AC input connector, refer to the manufacturer
(Phoenix Contact) part number HDFKV 16 at their website,
www.phoenixcontact.com.
Power Supply Type
Connection Description
Bus bars with two holes for 1/2” bolts on each terminal
(POS. and NEG.)
40V-600V models: bus bars with single holes for 3/8" bolts
on each terminal (POS. and NEG.)
800V and 1000V models: 1/4-20 studs for each terminal
(POS. and NEG.)
Bus bars with single holes for 3/8" bolts for each terminal
(POS. and NEG.)
4 kW to 15 kW, 10V-30V models
5 kW to 15 kW, 40V-1000V models
20 kW to 30 kW
Table 2–5. Output Terminal Connections
Manufacturer
Panduit
Low Current
P, PV, or PN series, or
equivalent
High Current
Standard stranded wire: LCA Series, or equivalent
Flexible stranded wire: LCAX Series, or equivalent
Note: Contact lug manufacturer for recommended crimping tool.
Table 2–6. Recommended Lugs
Tool
Manufacturer
Manufacturer P/N
Crimping
Molex
11-01-0197
Extracting
Molex
11-03-0044
Table 2–7. Recommended Sense Connector Tools
2-6
M550221-01 Rev U
Sorensen SGI Series
Installation
Wire Selection
2.5
Care must be taken to properly size all conductors for the input and output of
the power supply. This section provides guidance in the selection of wire size.
CAUTION!
Cables with Class B or C stranding should be used. Fine-stranded
(flexible) cables should not be used unless crimp-on lugs or ferrules
are used that are approved for fine-stranded cables.
2.5.1
Wire Size
The tables below will assist in determining the appropriate wire size for both
the input and output connections. Table 2–8 gives minimum recommended
wire size; these recommendations are for copper wire only. This table is
derived from the National Electrical Code, and is for reference only. Local laws
and conditions may have different requirements. For higher ratings, wires can
be paralleled; refer to the National Electrical Code for guidelines.
Size
AWG
Temperature Rating of Copper Conductor
60°C
75°C
85°C
90°C
Types: RUW,
T, TW, UF
Types: FEPW,
RHW, RH, RUH,
THW, THWN,
XHHW, USE, ZW
Types: V, MI
Types: TA, TBS,
SA, AVB, SIS, FEP,
FEPB, RHH, THHN,
XHHW
Current Rating, A(RMS)
14
20
20
25
25
12
25
25
30
30
10
30
35
40
40
8
40
50
55
55
6
55
65
70
75
4
70
85
95
95
3
85
100
110
110
2
95
115
125
130
1
110
130
145
150
0
125
150
165
170
00
145
175
190
195
000
165
200
215
225
0000
195
230
250
260
Table 2–8. Minimum Wire Size
M550221-01 Rev U
2-7
Installation
Sorensen SGI Series
When determining the optimum cable specification for your power applications,
the same engineering rules apply whether at the input or output of an
electrical device. Thus, this guide applies equally to the AC input cable and DC
output cable for this power supply and application loads.
Power cables must be able to safely carry maximum load current without
overheating or causing insulation degradation. It is important to power supply
performance to minimize IR (voltage drop) loss within the cable. These losses
have a direct effect on the quality of power delivered to and from instruments
and corresponding loads.
When specifying wire gauge, consider derating due to operating temperature
at the wire location. Wire gauge current capability and insulation performance
drops with the increased temperature developed within a cable bundle and
with increased environmental temperature. Thus, short cables with generously
derated gauge and insulation properties are recommended for power source
applications.
Be careful when using published commercial utility wiring codes. These codes
are designed for the internal wiring of homes and buildings and accommodate
the safety factors of wiring loss, heat, breakdown insulation, aging, etc.
However, these codes consider that up to 5% voltage drop is acceptable. Such
a loss directly detracts from the quality performance specifications of this SG
power supply. Also, consider how the wiring codes apply to bundles of wire
within a cable arrangement.
In high performance applications requiring high inrush/ transient currents,
additional consideration is required. The cable wire gauge must accommodate
peak currents developed at peak voltages, which might be up to ten times the
average current values. An underrated wire gauge adds losses, which alter the
inrush characteristics of the application and thus the expected performance.
Table 2–9 presents wire resistance and resulting cable voltage drop at
maximum rated current, with the wire at 20°C. Copper wire has a temperature
coefficient of α = 0.00393Ω/°C at t1 = 20°C, so that at an elevated
temperature, t2, the resistance would be R2 = R1 (1 + α (t2 - t1)).
2-8
M550221-01 Rev U
Sorensen SGI Series
Installation
Column 1
Column 2
Column 3
Column 4
Size, AWG
A(RMS)
Ohms/100 Ft
(One Way)
Voltage Drop/100 Ft
(Column 2 x Column 3)
14
20
0.253
5.06
12
25
0.156
3.90
10
30
0.999
3.00
8
40
0.063
2.52
6
55
0.040
2.20
4
70
0.025
1.75
3
85
0.020
1.70
2
95
0.016
1.52
1
110
0.012
1.32
0
125
0.010
1.25
00
145
0.008
1.16
000
165
0.006
0.99
0000
195
0.005
0.98
Table 2–9. Wire Resistance and Voltage Drop, 20°C
M550221-01 Rev U
2-9
Installation
2.6
Sorensen SGI Series
LOAD CONSIDERATIONS
This section provides guidelines for incorporating protective diode networks at
the output of the power supply to prevent damage while driving inductive loads
or loads having stored energy that could be circulated back to the power
supply.
2.6.1
Inductive and Stored-Energy Loads
To prevent damage to the power supply from inductive voltage kickback,
connect an anti-parallel diode (rated at greater than the supply’s output voltage
and current) across the output: Connect the cathode to the positive output and
the anode to return.
Where positive load transients, such as back EMF from a motor might occur,
or stored energy is present such as a battery, a second blocking diode in
series with the output is recommended to protect the power supply.
BLOCKING AND ANTI-PARALLEL DIODES
Ensure that the chosen components are suitably rated for the particular
inductance and energy to be dissipated. The Peak Reverse Voltage ratings
should be a minimum of 2 times the Power Supply maximum output voltage.
The Continuous Forward Current ratings should be a minimum of 1.5 times the
power supply maximum output current. A heatsink may be required to
dissipate the power caused by flow of current.
Battery
Application
Sense (+)
Out (+)
Power
Supply
OR
Out (-)
Sense (-)
Inductive Load
Application
Freewheel
Diode
Figure 2-1. Diode Connection
2-10
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Sorensen SGI Series
2.7
Installation
Outline Drawings
Figure 2-2 through Figure 2-5 show the outlines and overall dimensions for
installation of the 3U and 6U models of the SGI Series power supplies.
Figure 2-6 through Figure 2-14 show locations of rear panel connectors.
Figure 2-15 shows protective covers for the AC input and DC output of the 3U
10V-30V models.
M550221-01 Rev U
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Installation
Sorensen SGI Series
Figure 2-2. Installation Drawing, 3U Models 10V-30V
2-12
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Sorensen SGI Series
Installation
Figure 2-3. Installation Drawing, 3U Models 40V-600V
M550221-01 Rev U
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Installation
Sorensen SGI Series
Figure 2-4. Installation Drawing, 3U Models 800V and 1000V
2-14
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Sorensen SGI Series
Installation
Figure 2-5. Installation Drawing, 6U Models 20kW-30kW
M550221-01 Rev U
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Installation
Sorensen SGI Series
Figure 2-6. Rear Panel, Standard, 3U Models 10V-30V
2-16
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Installation
Figure 2-7. Rear Panel, GPIB Option, 3U Models 10V-30V
M550221-01 Rev U
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Installation
Sorensen SGI Series
Figure 2-8. Rear Panel, Ethernet Option, 3U Models 10V-30V
2-18
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Installation
Figure 2-9. Rear Panel, Standard, 3U Models 40V-600V
M550221-01 Rev U
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Installation
Sorensen SGI Series
Figure 2-10. Rear Panel, GPIB Option, 3U Models 40V-600V
2-20
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Installation
Figure 2-11. Rear Panel, Ethernet Option, 3U Models 800V and 1000V
M550221-01 Rev U
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Installation
Sorensen SGI Series
Figure 2-12. Rear Panel, Standard, 6U Models 20kW-30 kW
2-22
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Installation
Figure 2-13. Rear Panel, GPIB Option, 6U Models 20kW-30 kW
M550221-01 Rev U
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Sorensen SGI Series
Figure 2-14. Rear Panel, Ethernet Option, 6U Models 20kW-30 kW
2-24
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Installation
Figure 2-15. Instructions for Assembly of AC and DC Covers
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M550221-01 Rev U
SECTION 3
OPERATION
3.1
Introduction
The SGI Series adds powerful functionality and sequence programming to the
SG family of DC power supplies. The graphical display, front panel keyboard,
and context sensitive keys make setup of the sophisticated functions simple and
easy. The following sections provide detailed information on the controls and
indicators, programming conventions, and the front panel menu structure of the
SGI Series.
3.1.1
Front/Rear Panels
Figure 3-1 shows the front panel of the 3U models; the 6U models have the
same controls and indicators. Figure 3-2 through Figure 3-10 show the rear
panels of the 3U and 6U models, with their connectors and controls.
Figure 3-1. Front Panel Controls and Indicators (3U Model Shown)
M550221-01 Rev U
3-1
Operation
Sorensen SGI Series
WARNING!
The power-up factory default state is output enabled, where the
output will be energized at the settings of voltage and current.
Item
Reference
Functional Description
Two–position switch turns the power supply on and off.
WARNING!
1
2
3
ON/OFF Switch
Front Panel Display
OFF position does not remove AC input
from internal circuits or input terminal
blocks. Disconnect external AC input
before servicing unit.
256 x 64 graphic vacuum fluorescent display for menus,
settings and functions.
Function Keys, F1-F4
Context-sensitive, soft-keys execute commands specified on
front panel display by its corresponding label.
LED Mode Indicators:
Indicates the mode that is active.
Output On Power to output terminals is energized.
Output Off Power to output terminals is disabled.
4
Remote Supply presently controlled by remote digital interface.
Constant Voltage Power supply presently in Constant-Voltage mode.
Constant Current Power supply presently in Constant-Current mode.
Constant Power Power supply presently in Constant-Power mode.
5
NAVPAD
Navigation Pad navigates between and within screens; also
used for increment/decrement control to make live updates;
see Section 3.5 Section 3.6.
Programming Keys:
Specific function keys, also called hard-coded keys.
Voltage Jumps directly to Voltage programming.
6
Current Jumps directly to Current programming.
Overvolt Jumps directly to Overvoltage Protection programming.
7
Output On/Off Key
Enables/disables power to the output terminals.
8
Numeric Keys 0-9
Used to enter specific values for editable items.
9
ESC Key (escape)
Cancels numeric input and/or returns to previous menu.
10
Menu/Enter
“Menu” returns to Home Menu Page 1; see Section 3.7.
“Enter” sets a value that was input via numeric keys.
Table 3–1. Front Panel Controls and Indicators
3-2
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Operation
Figure 3-2. Rear Panel Interface, Standard, 3U Models 10V-30V
Figure 3-3. Rear Panel Interface, GPIB Option, 3U Models 10V-30V
Figure 3-4. Rear Panel Interface, Ethernet Option, 3U Models 10V-30V
M550221-01 Rev U
3-3
Operation
Sorensen SGI Series
Figure 3-5. Rear Panel Interface, Standard, 3U Models 40V-600V
Figure 3-6. Rear Panel Interface, GPIB Option, 3U Models 40V-600V
Figure 3-7. Rear Panel Interface, Ethernet Option, 3U Models 800V and 1000V
3-4
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Operation
Figure 3-8. Rear Panel Interface, Standard, 6U Models 20kW-30kW
Figure 3-9. Rear Panel Interface, GPIB Option, 6U Models 20kW-30kW
Figure 3-10. Rear Panel Interface, Ethernet Option, 6U Models 20kW-30kW
M550221-01 Rev U
3-5
Operation
Item
Sorensen SGI Series
Reference
Functional Description
1
AC Input Connectors
2
AC Input Safety Ground
3
DC Output Bus Bars
Positive (+) and negative (–) outputs.
3a
HV DC Output Studs
Positive (+) and negative (–) outputs for 800V and
1000V models only.
4
PAR OUT
Parallel Out connector of master unit for configuring
parallel operation of units when connected to Parallel In
connector of slave unit; see Section 3.16 .
PAR IN
Parallel In connector of slave unit for configuring parallel
operation of units when connected to Parallel Out
connector of master unit; see Section 3.16.
6
ANALOG CONTROL
Remote Analog Interface connector, J1, for
programming and monitoring signals of output, status
indication, and remote shutdown signals; see Table 3–5
for individual pin descriptions.
7
SENSE Connector
Input connector, J3, for remote sensing of voltage at the
load to compensate for line drop in load cables; see
Section 3.14.
7a
HV SENSE Connector
Input connector,J3, for remote sensing of voltage at the
load to compensate for line drop in load cables, 800V
and 1000V models only; see Section 3.14.
8
RS-232 Connector
9
Configuration Switch
5
†
Connection for 3-phase AC.
Connection for safety ground wire.
RS-232 connector for remote digital control.
†
Eight-position DIP switch to configure the digital
interface of the unit
Refer to Figure 3-2, Figure 3-5, and Figure 3-8Error! Reference source not found..
†
Refer to the Programming Manual for details on the digital interface.
Table 3–2. Rear Panel Connectors and Controls, Standard
3-6
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Sorensen SGI Series
Item
Operation
Reference
Functional Description
1
AC Input Connectors
2
AC Input Safety Ground
3
DC Output Bus Bars
Positive (+) and negative (–) outputs.
3a
HV DC Output Studs
Positive (+) and negative (–) outputs for 800V and
1000V models only.
4
PAR OUT
Parallel Out connector of master unit for configuring
parallel operation of units when connected to Parallel In
connector of slave unit; see Section 3.16.
PAR IN
Parallel In connector of slave unit for configuring parallel
operation of units when connected to Parallel Out
connector of master unit; see Section 3.16.
6
ANALOG CONTROL
Remote Analog Interface connector, J1, for
programming and monitoring signals of output, status
indication, and remote shutdown signals; see Table 3–5
for individual pin descriptions.
7
SENSE Connector
Input connector, J3, for remote sensing of voltage at the
load to compensate for line drop in load cables; see
Section 3.14.
7a
HV SENSE Connector
Input connector,J3, for remote sensing of voltage at the
load to compensate for line drop in load cables, 800V
and 1000V models only; see Section 3.14
8
RS-232 Connector
9
Configuration Switch
10
GPIB Connector
5
†
†
Connection for 3-phase AC.
Connection for safety ground wire.
RS-232 connector for remote digital control.
†
Eight-position DIP switch to configure the digital
interface of the unit
GPIB connector for remote digital control.
Refer to Figure, Figure 3-6, and Figure 3-9.
†
Refer to the Programming Manual for details on the digital interface.
Table 3–3. Rear Panel Connectors and Controls, GPIB Option
M550221-01 Rev U
3-7
Operation
Sorensen SGI Series
Item
Reference
Functional Description
1
AC Input Connectors
2
AC Input Safety Ground
3
DC Output Bus Bars
Positive (+) and negative (–) outputs.
3a
HV DC Output Studs
Positive (+) and negative (–) outputs for 800V and
1000V models only.
4
PAR OUT
Parallel Out connector of master unit for configuring
parallel operation of units when connected to Parallel In
connector of slave unit; see Section 3.16.
PAR IN
Parallel In connector of slave unit for configuring parallel
operation of units when connected to Parallel Out
connector of master unit; see Section 3.16.
6
ANALOG CONTROL
Remote Analog Interface connector, J1, for
programming and monitoring signals of output, status
indication, and remote shutdown signals; see Table 3–5
for individual pin descriptions.
7
SENSE Connector
Input connector, J3, for remote sensing of voltage at the
load to compensate for line drop in load cables; see
Section 3.14.
7a
HV SENSE Connector
Input connector,J3, for remote sensing of voltage at the
load to compensate for line drop in load cables, 800V
and 1000V models only; see Section 3.14.
8
RS-232 Connector
9
Configuration Switch
10
External User
†
Connector
11
ETHERNET Connector
5
12
RESET Switch
13
LAN
†
Connection for 3-phase AC.
†
Connection for safety ground wire.
RS-232 connector for remote digital control.
Four–position DIP switch to configure the digital
interface of the unit
†
Input/Output connector for external auxiliary digital
control signals.
†
†
Ethernet connector for remote digital control.
Reset switch to return configuration parameters to
factory default settings; must be depressed until LAN
LED is blinking.
LED indicator: continuously on indicates Ethernet
connection; off indicates no Ethernet connection;
blinking indicates Instrument ID.
Refer to Figure 3-4, Figure 3-7, and Figure 3-10.
†
Refer to the Programming Manual for details on the digital interface.
Table 3–4. Rear Panel Connectors and Controls, Ethernet Option
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3.2
Operation
Basic Operation and Output Verification
This section provides an overview and examples of front panel programming,
Default Programming menu operation, and initial functional tests for the SGI
Series power supply.
The SGI Series power supply is shipped from the factory configured for front
panel (local) voltage/current/OVP control, and with the remote sense not
connected (default to internal local voltage sensing at chassis output
terminals). The remote sense leads must be connected externally by the user
to achieved performance specifications. The Analog Control connector is
supplied with a mating connector which has the remote output ON/OFF control
signals jumpered for ON (Pin-5 shorted to Pin-6) in order to allow the output to
be enabled.
WARNING!
The power-up factory default state is output enabled, and the output will
be energized with the settings of voltage and current at zero. At initial
power-on a screen is displayed with a warning that the output will be
enabled after countdown of a 10-second timer; during this state, the
output Voltage and Current are programmed to zero, the Overvoltage
Protection (OVP) is set to maximum, and the Output State is OFF. After
the 10-second timer has elapsed, the Output State is changed to ON.
3.2.1
Initial Setup
Before connecting the unit to the AC mains, ensure that the front panel
ON/OFF power switch is in the OFF position. Check the Analog Control (J1)
mating connector on the rear panel to verify that Pins 5 and 6 (Remote Output
On/Off) are shorted together. This is the default configuration installed from
the factory. This jumper allows the output of the supply to be enabled from the
front panel when the Output On/Off button is pressed.
3.2.2
Default Programming Menu
The following subsections describe operation in Constant-Voltage Mode,
Constant-Current Mode, and Overvoltage Protection (OVP) using the Default
Programming Menu for input of setpoints.
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Operation
3.2.3
Sorensen SGI Series
Constant-Voltage Mode Operation
In Constant-Voltage mode operation, the output voltage is regulated at the
programmed value while the output current varies with the load requirements.
The voltage could be programmed either through the front panel or by the
remote analog voltage programming input; see Section 3.11. To verify
operation in Constant-Voltage mode, follow these steps:
1. Ensure that there is no load connected to the output.
2. Ensure that the remote sense is connected to the output terminals.
3. Connect a digital voltmeter (DVM) across the rear panel positive and
negative output terminals, observing the correct polarity. Make sure the
DVM is in the DC voltage mode and the range is adequate to handle the
full-scale voltage of the power supply.
4. Apply power to the AC mains input, and turn on the power supply.
5. If the default power-on state had previously been configured to be OFF,
when the supply reaches the Home menu Page 1, enable the output by
pressing “Output On/Off”.
6. Enter the Default Programming menu by pressing either of the
voltage, current or overvoltage front panel keys:
7. Program the Current to 10% of rated output (this programs the
current above zero to enable supplying output current while in the
constant-voltage mode). See Section 3.8.1 for more details on
programming.
8. Navigate to Voltage programming. With the Editing Arrow adjacent to
“Set Volt”, press and hold the NavPad up arrow and observe both the
front panel voltage display and the output of the DVM begin to accelerate
up. The output voltage should increase from 0 V to the maximum rated
voltage of the supply. The front panel display and DVM readings should
track within the accuracies of the meter and the front panel display.
9. Verify the front panel Constant Voltage Mode indicator is on.
10. Program the Voltage and Current back to zero.
11. Turn the power supply off.
12. If Constant-Voltage mode operation did not function as indicated above,
verify the setup and perform the check again. If the function continues to
fail, contact the factory for assistance.
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3.2.4
Operation
Constant-Current Mode Operation
In Constant-Current mode operation, the output current is regulated at the
selected value while the output voltage varies with the load requirements. The
current could be programmed either through the front panel or by the remote
analog current programming input; see Section 3.10. To verify operation in
Constant-Current mode, follow these steps:
1. If the output had been previously energized, allow 5 minutes for the
output capacitors to discharge. Connect a high current DC ammeter
across the rear panel positive and negative output terminals, observing
the correct polarity. Select wire leads of sufficient current carrying
capacity and an ammeter range compatible with the units maximum rated
output current.
Note: Verification that the supply could source rated output current,
without measuring the current with an ammeter, but using only the front
panel meter, could be performed by shorting the output terminals
together.
2. Turn on the power supply.
3.
If the default power-on state had been previously configured to be OFF,
when the supply reaches the Home menu Page 1, enable the
output by pressing “Output On/Off”.
4. Enter the Default Programming menu by pressing either of the
voltage, current, or overvoltage front panel keys:
5. Program the Voltage to 10% of rated output (this programs the voltage
above zero to enable supplying output voltage while in the constantcurrent mode). See Section 3.8.1 for more details on programming.
6. Navigate to Current programming. With the Editing Arrow adjacent to
“Set Curr”, press and hold the NavPad up arrow and observe both the
front panel current display and the output of the DC ammeter begin to
accelerate up. The output current should increase from 0 A to the
maximum rated current of the supply. The front panel display and DC
ammeter readings should track within the accuracies of the meter and the
front panel display.
7. Verify the front panel Constant Current Mode indicator is on.
8. Program the Voltage and Current back to zero.
9. Turn the power supply off.
10. Allow 5 minutes for the output capacitors to discharge and disconnect the
ammeter or short from the output terminals.
M550221-01 Rev U
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Operation
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11. If Constant-Current mode operation did not function as indicated above,
verify the setup and perform the check again. If the function continues to
fail, contact the factory for assistance.
3.2.5
Overvoltage Protection
The Overvoltage Protection (OVP) function allows the supply to shutdown the
output, if it were to exceed a preset voltage. This may be used to protect
sensitive circuits or loads from damage caused by an excessive voltage on the
output of the supply. The Overvoltage Protection (OVP) could be programmed
either through the front panel or by the remote analog OVP programming
input; see Section 3.12. To verify OVP operation, follow these steps:
1. Make sure there is nothing connected across the output terminals.
2. Turn on the power supply.
3. if the default power-on state had been previously configured to be OFF,
when the supply reaches the Home Menu Page 1, enable the output by
pressing “Output On/Off”.
4. Enter the Default Programming menu by pressing either of the
voltage, current, or overvoltage front panel keys:
5. Program the Current to 10% of rated output (this programs the
current above zero to enable supplying output current while in the
constant-voltage mode). See Section 3.8.1 for more details on
programming.
6. Navigate to OVP (Overvoltage) programming. The factory default setting
is approximately 110% of the maximum rated output of the supply. With
the Editing Arrow adjacent to “Set OVP”, press and hold the NavPad
down arrow and observe the front panel voltage display accelerate down.
Release the NavPad down arrow when the OVP is programmed to about
80-90% of the maximum rated output voltage value.
7. Navigate to Voltage programming. With the Editing Arrow adjacent to “Set
Volt”, press and hold the NavPad up arrow and observe the front panel
voltage display accelerate up. When the output voltage exceeds the OVP
trip point the OVP Warning screen will be display with the voltage level
reached at OVP trip. The Output State will be programmed to OFF, and
the voltage, current, and OVP settings will retain their previous settings.
8. Press (F4) and the fault screen will clear after 4 seconds. The Home
Menu Page 1 will be displayed, and the output will remain disabled.
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Operation
9. Enter the Default Programming menu by pressing either
the voltage, current, or overvoltage front panel keys:
10. Program the OVP setting as appropriate for the
application as shown above. If OVP will not be used,
then “OVP set” programming may be set at maximum, approximately
110% of the rated output voltage of the supply.
11. If OVP mode did not function as indicated above, verify the setup and
perform the check again. If the function continues to fail, contact the
factory for assistance.
3.3
Initial Start-Up Displays
Upon initial start-up of unit, the following screens are displayed in sequence,
after initial splash screens which show manufacturer's information:
LAST CAL DATE
Displays for seven seconds, showing date that the unit was last calibrated.
See SG Series Programming Manual, P/N M550129-03, for calibration
information and how to update "Last Cal Date."
OUTPUT-ENABLED WARNING
Indicates number of seconds left in a 10-second countdown, warning the user
that the output will be enabled at the end of the countdown unless the process
is aborted by pressing the F1 key on the front panel. Once aborted, the output
remains off until the user enables it with the Output On/Off key: refer to
Section 3-1. This warning appears only if the unit is both in Local mode and
was last set and saved to enable the output at its next start-up. See
Section 3.8.2 for changing and saving the Power On (PwrOn) Output settings.
Note: Factory default setting for Output at start-up is ON, output enabled.
HOME MENU, PAGE 1
Final screen to display upon initial start-up of the unit; it is from here that the
user may access all menu functions. See Menu Map, Section 3.7, for Home
M550221-01 Rev U
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Operation
Sorensen SGI Series
Menu pages 1 through 3 and their submenus. See Functions, Section 3.8, for
access and program menu functions.
HOME TIMEOUT
Displays after 30 seconds of idle time in any of the three Home Menu pages; pressing
the F4 key on the front panel returns the display to Home Menu Page 1.
3.4
Display Elements
Editing arrows for navigating to
editable items within a menu, and for
editing (see Navigation, Section 3.5,
and Editing, Section 3.6.
Name of active screen
Editable values
Function keys
OVP Setpoint Indicator Bar (vertical bar).
Measured values for
Voltage and Current.
Graph indicates portion of
the present value relative to
the maximum value.
3-14
Function keys
Navigation arrow moves to next page in
menu (see Navigation, Section 3.5).
M550221-01 Rev U
Sorensen SGI Series
3.5
Operation
Navigation
The primary keys used to navigate are: the escape key, ESC, the function
keys, F1-F4, the navigation pad, NavPad, the menu and enter key,
Menu/Enter and voltage, current, overvoltage protection programming keys,
V/I/OVP Prog. Their functions are as follows:
ESC: Probably the most important key to remember, escape works like the
back or return button in a browser, bringing the display back one menu level
to the previous menu. Continued pressing will eventually return the display
to the Home Menu. Escape is not functional in a Fault Screen.
F1-F4: To enter a function menu or execute a function, press the
corresponding Function key to the right of the function to be entered or
executed. Only those function keys defined within that menu will be
operational.
NavPad: Used to move between menu pages and between editable items
within a menu
o
If a Navigation Arrow is displayed at the top and/or bottom of a screen,
pressing up/down on the NavPad allows the user to move
between pages within a menu.
o
If the Editing
Arrow is displayed, pressing left/right on the NavPad
allows the user to move between editable items within a menu. If a
screen has only one editable item, left/right arrow has no effect. See
Editing, Section 3.6.
Menu/Enter: Pressing “Menu” from any submenu jumps the display directly to
the Home Menu, Page 1, except in sequence or power mode; see note below.
Pressing “Enter” moves the editing arrow to the next editable item in the menu,
similar to the right arrow on the NavPad.
V/I/OVP Prog: Pressing the “Voltage,” “Current,” or “Overvolt” programming
key displays the Default Programming menu with the editing arrow at the
corresponding function in that menu - see note below.
Note:
The “Menu” key and the “Voltage,” “Current” and “Overvolt”
programming keys do not function while running a sequence, paused in a
sequence, in sequence single step mode, or running in power mode.
M550221-01 Rev U
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Operation
3.6
Sorensen SGI Series
Editing
WARNING!
While Output is enabled, the editable item being programmed
Voltage, Current, Overvoltage or Power is “Live Updated”, and
takes effect on the output terminals immediately.
The primary keys used to edit are: ESC, F1-F4, NavPad, Menu/Enter and
Keypad 0-9. Their functions are as follows:
ESC: In editing, ESC (escape) functions like the escape key on a keyboard.
While programming an editable item, the escape key can be used to clear the
entered value before it is accepted and takes effect. This leaves the program
function setting at the original value before editing began.
F1-F4: Not used to program editable items directly, Function keys may be
used to save, recall, cut, past, insert or delete edits made in some menus.
These functions will be indicated to the left of the function keys in the specific
menus they are used.
NavPad: The NavPad functions as an increment/decrement editing and “Live
Update” (Pressing Up/Down). “Live Update” means the value or item displayed
due to an edit change from the NavPad, is actively changing the operation of
the supply in real time when Output is On. This includes programming editable
items as well as scrolling through option lists within a menu.

Programming editable items: If an Editing Arrow is displayed,
pressing the NavPad up or down incrementally adjusts the editable
item value adjacent to the Editing Arrow by the least significant digit
per press in the respective direction. If the NavPad is pressed up or
down and held, the selected editable item will accelerate from set point
to full-scale or from set point to zero, respectively, within 15 seconds.
If the output is enabled, the output terminals will “Live Update” with the
programmed changes.

Scrolling through option lists: Pressing the NavPad up or down
incrementally scrolls through the listed items available and “Live
Update” selects the item being displayed. Option lists wrap around
from top to bottom (pressing NavPad down) and bottom to top
(pressing NavPad up).
Menu/Enter: “Enter” is used to accept a value edited or entered using
“Keypad 0-9.” When “Enter” is pressed the value edited is programmed into
3-16
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Sorensen SGI Series
Operation
memory and the Editing Arrow moves to the next editable item. If the output is
enabled, the programmed value takes effect on the output terminals
immediately after “Enter” is pressed.

“Menu” is not used to edit.
Keypad 0-9: “Keypad 0-9” is used to program numeric values into editable
items using single digit entry. “Enter” must be pressed to program the edited
value into memory. The decimal key is for future implementation.

If the editing arrow is displayed, pressing “Keypad 0-9” will activate the
editable item to the left of the Editing Arrow and display the number(s)
pressed. As the first number is input, the display begins with the least
significant position first, and shifts left as additional numbers are
pressed (see Example below). Once the user starts to input a value,
the Editing Arrow will begin to blink – a blinking Edit Arrow indicates
that the value entered has not been programmed into memory; also,
both the NavPad right/left arrows and the NavPad up/down “Live
Update” are no longer operational in this condition. The user must
either abort (see Section 3.6.1, Aborting an Edit) or press Enter to
accept the inputted value.
Example: Programming 50V
Navigate to voltage programming by pressing the “Voltage” programming key.
The Default Programming menu is displayed and the Editing Arrow is to the right
of the “Set Volt” editable item value. Begin entering the value:
 Press “5” The display “Set Volt” value reads, “0.5V” (Notice the Editing Arrow
begins to blink).
 Press “0” The display “Set Volt” value reads, “5.0V”
 Press “0” The display “Set Volt” value reads, “50.0V”
 Press “Enter” The value is programmed into memory. (Notice the Editing
Arrow stops blinking and moves automatically to the next editable item. This
means the value has been programmed).
3.6.1
Aborting an Edit
“Escape” can be used to cancel an edit before it is accepted. When pressed,
the value of the editable item displayed will default to the previous value
before editing began. The Editing Arrow does not change position and will no
longer be blinking.
Note: If an invalid or out-of-range value is entered with either the NavPad or
“Keypad 0-9”, it will be ignored and the user will be alerted through an audible
signal.
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Menu Map
3.7
3.7.1
Home Menu
Home Menu is made up of three
pages from which the user may
navigate to the various function or
command screens.
Return to Home Menu Page 1 by
pressing Escape as needed,
or Menu, except as noted
in Section 3.5
Page 1
Page 2
Page 3
3.7.2
Toggle between pages
by pressing up or down
on the NavPad. See
Section 3.5.
NavPad
Default Programming Menu
Access this menu directly with the hard-code keys,
Voltage, Current, or Overvoltage, on the Control Panel.
See Section 3.8.1 for details.
3.7.3
Navigating from Home Menu Page 1
SAVE - See Section 3.8.2 for
details.
RECALL - See Section 3.8.2
for details.
SEQUENCE See
Sections 3.7.6 for submenus
and 3.8.4 for details.
POWER - See
Sections 3.7.8 for next
screens and 3.8.5 for details.
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3.7.4
Operation
Navigating from Home Menu Page 2
DISPLAY - See
Section 3.8.7 for details.
LOCK KEY - See
Sections 3.7.12 for next
screen, and 3.8.8 for
details.
LANGUAGE - See
Section 3.8.9 for details.
INFO - See
Section 3.8.10 for details.
3.7.5
Navigating from Home Menu Page 3
or
Ethernet Remote Menu
REMOTE - See
Section 3.7.9 for
submenus and Section
3.8.11 for details.
GPIB Remote Menu
SYSTEM - See
Section 3.8.12 for details.
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Operation
3.7.6
Sorensen SGI Series
Sequence Menu
Refer to Basic Sequence Operation under Section 3.8.4.
3.7.7
Sequence Programming Operation
The screens in this section show the various operations available for
programming a sequence. See details on Step Operations under
Section 3.8.4.
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3.7.8
Operation
Constant-Power Setup Menu
See Section 3.8.5 for details.
3.7.9
Remote Menu
Remote menu is either GPIB or Ethernet option. The submenus for Ethernet
are mapped here; there are no submenus for the GPIB Remote screen (see
Section 3.8.11 for details).
ETHERNET
The Ethernet Remote Menu provides submenus for LXI Settings (F3) and
Ethernet Menu (F4). The Ethernet Menu provides submenus for Server
Port (F3) and Static IP Configuration (F4). See Section 3.8.11 for details.
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3.7.10 Remote Control Screen Examples
Remote screens display when operation is controlled by computer. Pressing
F4 from any Remote screen returns operation to Local Mode.
3.7.11 Warning Screens
General hardware failure has
occurred. Press F4, Clear Fault,
to reset the unit.
Overvoltage Protection was
tripped. Press F4, Clear OVP;
the unit will reset in 4 seconds.
Displays when a saved setting
with Output On is recalled. See
Section 3.8.3 for details.
3.7.12 Other Screens
Home Menu Time Out Screen
displays after 30-second idle.
3.8
Locked Key
Screen (From
Home Menu
Page 2, F2) to
unlock press F4
Screen to confirm Unlock control
panel keys.
Programming/Operating Functions
This section describes various programming/operating instructions
3.8.1
Voltage, Current, and Overvoltage Protection Programming
Press Voltage, Current, or Overvoltage key on Control
Panel to go directly to the Default Programming Menu. The
editing arrow will be displayed next to the corresponding
item pressed.
PROGRAMMING VOLTAGE
Go directly to Voltage programming by pressing the voltage key. The
Default Programming menu is displayed and the Editing Arrow is to the
right of the "Set Volt" editable value. Edit the value by NavPad up/down
or by entering the value with "Keypad 0-9". For more details see
Section 3.6.
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Operation
PROGRAMMING CURRENT
Go directly to Current programming by pressing the current key. The
Default Programming menu is displayed and the Editing Arrow is to
the right of the "Set Curr" editable value. Edit the value by NavPad
up/down or by entering the value with "Keypad 0-9". For more details see
Section 3.6.
PROGRAMMING OVERVOLTAGE PROTECTION
Go directly to Overvoltage trip point programming by pressing the
overvoltage key. The Default Programming menu is displayed and
the Editing Arrow is to the right of the "Set OVP" editable value. Edit
the value by NavPad up/down or entering the value with "Keypad 0-9".
For more details see Section 3.6.
3.8.2
Save
There are 10 memory locations (PwrOn and 1 through 9) into which a
programmed output configuration of Voltage, Current, OVP (Overvoltage
Protection trip point) and Output Condition can be stored. From Home Menu
Page 1 press (F1) to enter the Save menu. Voltage, Current and OVP values
programmed in the Default Programming menu will be pulled into the Save
menu, top line, upon reaching that menu. In addition, the present output
condition, output engaged or output disabled, will be indicated.
Values pulled in from Default
Programming Menu.
Save to location.
Values currently saved
in location.
EDIT VOLTAGE, CURRENT AND OVP
Toggle between the editable items using the NavPad and edit Voltage,
Current and OVP to appropriate values (see Section 3.6 for editing
details).
EDIT OUTPUT CONDITION
Pressing NavPad up/down will toggle the output condition indicator on
( ) to indicate the output will be enabled and off (blank) to indicate the
output will be disabled.
Note: Edits will not take effect until the configuration is saved.
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Operation
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SAVING A CONFIGURATION
With the Editing Arrow adjacent to “Save Location” pressing NavPad
up/down allows the user to scroll through the list of memory locations
(PWR ON and 1-9). Select the appropriate location and press (F3) to
save the configuration to that location. The bottom line of the screen will
update with the configuration information saved. Press (F4), “Escape” or
“Menu” key to exit to the Home Menu Page 1 at any time.
SAVING TO PWR ON
“PWR ON” is a unique “Save Location.” If a configuration is saved to
“PWR ON” location, the next time the ON/OFF front panel switch is
cycled, the SGI unit will power up into the state this configuration was
saved. If the Output Condition was saved as on ( ), which means
power enabled, a warning screen will be displayed at power up. The user
will have 10 seconds to press (F1) and abort the operation. If the count
times out, the supply output terminals will be live and programmed to the
saved configuration values; see Section 3.2 for Output-Enabled Warning.
All other saved configuration locations must be recalled to become active;
see Section 3.8.3.
3.8.3
Recall
There are 10 memory locations (as above, PwrOn and 1-9)
from which a programmed output configuration of Voltage,
Current, OVP (Overvoltage Protection trip point) and Output
Condition can be recalled.
From Home Menu Page 1 press (F2) to enter the Recall
menu. Using the NavPad up/down arrows scroll through the
list of saved configurations. Recall a saved configuration by
pressing the function key (F2-F4) to the right of that
configuration. If a configuration was saved with the Output
Condition on ( ) and that configuration is recalled, a
warning screen (See Menu Map, Section 3.7.9) will be
displayed *. The user is given the option to press Yes (F1)
to enable or No (F4) to disable the output. All other settings
will be programmed according to the recalled configuration
regardless of this choice.
* Note: The warning screen will not appear if the Output is already enabled.
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3.8.4
Operation
Sequencing
INTRODUCTION
The SGI sequencing function allows the user to set up the supply to
automatically run a series of voltage, current and power mode operations.
This is especially useful for setting up the supply to test to compliance
standards, or unburdening the test computer in automated testing
applications. Through RS-232, IEEE-488 or Ethernet, an external
computer can trigger the sequences (see SG Series Programming
Manual). Up to 50 sequences may be stored, with each sequence
containing up to 20 individual steps. With the ability to string sequences
together and an extensive list of step functions such as ramping, looping,
goto and subroutine calls, the user can define a nearly infinite variety of
test sequences.
The following sections will assist the user in programming, testing and
running a sequence from the front panel.
BASIC SEQUENCE OPERATION
To access the main Sequencing menu press F3
from Home Menu Page 1. From here any one of 50
sequences may be selected. The default names for
sequences are TESTxx where xx is a number from
01 to 50. Using SCPI commands via the RS-232,
IEEE-488, or Ethernet interface, the user may
rename these test sequences with meaningful
names of up to 15 characters (see SG Series
Programming Manual).
Note: DO NOT use non-sequence-related SCPI commands while performing
sequence operations.
Note: DO NOT use sequence SCPI commands as stand-alone commands
outside a sequence.
CAUTION!
RESTRICTIONS ON SEQUENCE PROGRAMMING
In order to allow maximum flexibility for generating small incremental
changes during a test sequence, the SGI allows 1 ms time resolution on
each step. With this capability, however, it is possible to create output
changes with fast slew rates, that could generate potentially damaging
large currents, in the output capacitors of the unit; refer to the guideline
note, below.
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Operation
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Note: When creating test sequences, use the following guidelines to prevent
damage to the unit:



Estimate the AC frequency and peak-to-peak voltage, V(PK-PK)
of the desired test sequence.
Convert the estimated V(PK-PK) to a % of maximum output
voltage (e.g., if V(PK-PK) is 10V and maximum voltage of the
supply is 100V, then %V(PK-PK) = 10%)
Verify that the frequency and %V(PK-PK) do not exceed the
values below:
Frequency
10Hz
50Hz
100Hz
150Hz
200Hz

% V(PK-PK)
25%
5.0%
2.5%
1.67%
1.25%
Another consideration is the actual rise and fall capabilities of the
output of the supply. Although damage will not occur, the shape
of the output waveform will be affected by the rise/fall times in
relation to programmed sequence settings. These vary widely
depending on the load conditions; contact the factory for further
information.
.
Note: Contact the factory for detailed information if the desired waveform
exceeds the recommended limits as discussed.
To change the test sequence, use the NavPad up/down to scroll through the
test list. From this menu the user may Start (F1), Single Step (F2), Program
(F3) or Delete (F4) a sequence.
START: press F1 from the main Sequence Menu to start and run a test
sequence. The display will show the test sequence name and step number
(e.g., TEST01-12, Sequence TEST01, step 12). It will also indicate the current
operation being executed (see Section 3.8.4.3, Operations) and will display
voltage, current, OVP, power and time remaining for that step. The time
format is hhhh:mm:ss:sss (last three digits are milliseconds).
User may pause or stop the test at any time by pressing either F3 to pause or
F4 to stop the sequence. The output will pause or stop in the same state as
the test step was when the key was pressed. Pressing F3 (Resume) restarts
the sequence from the beginning of the same step. (Note: For steps with
voltage or current ramps, the step will resume at the beginning of the ramp
and not at the point at which the ramp was paused.) Pressing F4 (Stop) to
stop the sequence returns the display to the main Sequence Menu.
SINGLE STEP: press F2 from the main Sequence Menu to single step
through a test sequence. The display will show the test sequence name and
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Operation
step number. It will also indicate the current operation being executed and
display voltage, current, OVP, power and time remaining for that step.
User may start the sequence after any step causing it to run in continuous
mode, by pressing F1 (Start). The sequence will start from the beginning of the
test sequence, not the beginning of the current step. To continue to single step
through each sequence step, press F2 (NextStep). Pressing F2 NextStep
before the timer ends, will replay the step. Pressing F4 (Stop) allows the user
to stop the single step mode, and the display returns to the main Sequence
Menu.
PROGRAM: press F3 from the main Sequence Menu to program a test
sequence. The Test Sequence submenu shows the name of the current test
sequence and step number. In addition it displays the primary operation of the
test step (there are 13 different operations, see Section 3.8.4.3, Operations).
From this submenu the user may copy (F1), paste (F2), insert (F3) or delete
(F4) a test step.
CopyStep (F1): copies the current step characteristics into a buffer for
later recall using the PasteStp (F2) function.
PasteStp (F2): pastes the current characteristics from the copy buffer
into the existing test step.
Insert (F3): inserts a new step before the currently displayed test step.
The default operation in the new step is set to NOP.
Delete (F4): deletes the current test step from the test sequence, and
inserts NOP into step 20 of the sequence.
DEL TEST: press F4 from the main Sequence Menu to
delete the entire currently selected test sequence. If Del
Test is selected, a warning screen will appear prompting the
user to either confirm (Yes – F1) or cancel (No – F4) the
delete action. Deleting a test actually fills each test step in
the sequence with a NOP (see Section 3.8.4.3)., and fills
Step 21 with STOP operation.
STEP OPERATIONS
When programming a test sequence (see Section 3.8.4.2) each step
operation can be any one of thirteen different functions. To access those
functions, from Home Menu Page 1 press F3 (see Menu Map,
Sections 3.7.2, 3.7.5, and 3.7.6), and use the NavPad to scroll through
the various step operations (see Section 3.5, Navigation) while in the
Sequence Step Programming submenu.
1. Once an operation has been selected for the present step, navigate to the
editable items and input values for each setting as appropriate (see
Section 3.6, Editing).
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Operation
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2. After programming a step, navigate to the step-number location on the
screen and scroll to the next step number to be programmed.
3. Once at the next step number to be programmed, start again by choosing an
operation for that step and continue as described above.
4. At the end of the sequence or to abort the sequence, press either the Escape
key or Menu to jump to the Save screen. F1 (Yes) saves the sequence (in
non-volatile memory) and returns to main Sequence Menu. F4 (No) will
retain the current changes only until the power supply is turned off. The next
power on restores the sequence to its previous condition.
The following are descriptions for each sequence operation:
NOP, No Operation: Used as a placeholder in the test
sequence, no values are changed during this step, and it
does not add time to the sequence.
V/I Mode, Voltage/Current Mode: This operation sets
the voltage, current and OVP to the programmed values
for the set period of time during the sequence step.
Navigate to each editable item to input values for
Voltage, Current, Overvoltage Protection and duration.
Ramp V, Ramp Voltage: This operation allows the user
to ramp the output voltage from an initial, or start, value
(Vi) to a final, or stop, value (Vf) over the time period
specified. Internally the unit uses Vi, Vf and the time to
calculate an appropriate ramp function to drive the output
during the test step. Use the NavPad to set the OVP,
initial Voltage (Vi), final Voltage (Vf), Current limit, and
duration.
Ramp I, Ramp Current: This operation allows the user
to ramp the output current from an initial, or start, value
(Ii) to a final, or stop, value (If) over the time period
specified. Use the NavPad to set the OVP, initial Current
(Ii), final Current (If), Voltage limit, and duration.
CP Mode, Constant-Power Mode: This operation is
similar to the V/I Mode, except it sets the supply in a
constant-power mode (See Section 3.8.5). Use the
NavPad to input values for OVP, Voltage limit, Current
limit, Constant Power setting and duration.
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Operation
Repeat: This operation returns to the beginning of the
test cycle (this could be a prior test sequence or the
beginning of the current test sequence, depending on the
number of branches and subcalls used in the affected
sequences) and repeats all previously executed steps a
single time. Once executed, the sequence continues to
execute all remaining steps after the Repeat command.
To repeat the preceding steps more than once, use the
Loop operation.
Subcall: This operation calls another test that runs as a
sub-sequence. If that sub-sequence includes a Return
command, execution of the primary sequence resumes at
the step following the Subcall step. Use the NavPad to
scroll to the desired Test name and change as
appropriate.
Return: This operation causes execution to resume at
the step immediately following the most recent Subcall.
When occurring in a primary sequence, without a prior
Subcall, Return stops execution of the test sequence.
Return is one of only three operations that may be used
in step 21 of a test sequence.
Loop: This operation causes the unit to repeat all steps
between the Loop operation and the Next operation for
the specified number of counts (maximum of 65,535).
Use the NavPad to set the Count for the total number of
loops.
Use the Next operation after the last step to be repeated.
Once the Loop has completed the set number of counts,
the unit will continue to execute the remainder of the
sequence.
Next: Next is used at the end of a Loop to signify the
end of the looped sequence.
If Next is not preceded by the Loop operation, this is an
INVALID condition. If the program encounters the Next
command under these conditions, the sequence will
abort and the output power to the terminals will be
disabled.
Stop: Stops the test sequence execution and retains the
last programmed output value. The Stop operation may
be used in step 21 of a sequence.
Goto: This operation allows the sequence to exit the
existing test sequence and begin another test sequence.
Goto is used to string together multiple sequences for a
single test. The Goto operation may be used in step 21 of
a sequence.
Pause:
This operation suspends execution of the
sequence and waits for operator input to press either the
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Operation
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Resume key to continue the sequence or the Stop key to
end the sequence.
SEQUENCING EXAMPLE
The following provides an example of programming and running a test
sequence.
A typical burn-in sequence requires the voltage to the device-under-test
(DUT) to ramp up to a nominal voltage, allow the unit to soak at that voltage
for a period of time, then ‘bump’ up that voltage to another level, soak, etc.,
then return the output back to zero. In some cases, an on/off power cycle
sequence may also be required. Figure 3-11 provides a graphical
representation of this example burn-in sequence.
Output Voltage
Burn-in Sequence
0
5
10
15
20
25
30
Tim e in seconds
Figure 3-11. Burn-in Sequence Example
To begin programming a sequence it is important to know the exact settings
for each step of the sequence. In this case, two sequences will be
programmed: the first being the up/down ramp sequence, and the second the
on/off sequence. The two will be strung together using a Goto command.
The example sequence will perform the following:
Sequence 1 – Up/Down Ramp
Step 1 – Ramp the output voltage from 0 V to 20 V over a 1 s period
Step 2 – Hold the voltage at 20 V for 2 s
Step 3 – Ramp the voltage from 20 V to 40 V over a 500 ms period
Step 4 – Hold the voltage at 40 V for 2.5 s
Step 5 – Ramp the voltage from 40 V to 0 V over a 2 s period
Step 6 – Hold the voltage at 0 V for 2 s
Step 7 – Go to sequence 2
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Operation
Sequence 2 – On/Off Loop
Step 1 – Begin a loop and set the count to 5
Step 2 – Turn on the voltage to 40 V for 2 s
Step 3 – Turn off the voltage for 2 s
Step 4 – Execute the Next loop until all 5 are complete
Step 5 – Stop the sequence
Run the sequence.
To program these sequences, do the following:
Sequence 1 – Up/Down Ramp
From the Home Menu Page 1, select F3 to enter the main Sequence
Menu. Use the NavPad up/down to select the sequence (Test ID) labeled
TEST01. Press F4 (Del Test) to reset all steps in TEST01 to a NOP
condition. This establishes a known state for this sequence. Press F3 to
enter the Sequence Step menu.
Step 1 – Ramp the output voltage from 0 V to 20 V over a 1 s period
From the Sequence Step menu, use the NavPad to set the test step
to the first step, TEST01-1. Use the NavPad to set the operation to
Ramp V mode. Set OVP to an appropriately high level (60 V for this
example), Vi to 0 V, Vf to 20 V and current to a nominal 10 A (for this
example we assume there is no load – or a very light load –
connected to the output). Set the time duration to 1 s or (0:00:01:000).
Once these values are set, press the F1 key to copy this setup into
the copy buffer for later use.
Step 2 – Hold the voltage at 20 V for 2 s
Use the NavPad to change to the next step (TEST01-2). Select the
V/I Mode operation and set the OVP to 60 V, voltage to 20 V, current
to 10 A and time duration to 2 s.
Step 3 – Ramp the voltage from 20 V to 40 V over a 500 ms period
Use the NavPad to change to the next step (TEST01-3). Use the F2
key to paste in a copy of the previously saved Ramp V step. Make
changes to this step by changing Vi to 20 V, Vf to 40 V and the time
duration to 500 ms (0:00:00:500)
Step 4 – Hold the voltage at 40 V for 2.5 s
Use the NavPad to change to the next step (TEST01-4). Select the
V/I Mode operation and set the OVP to 60 V, voltage to 40 V, current
to 10 A and time duration to 2.5 s.
Step 5 – Ramp the voltage from 40 V to 0 V over a 2 s period
Use the NavPad to change to the next step (TEST01-5). Use the F2
key to paste in a copy of the previously saved Ramp V step. Make
changes to this step by changing Vi to 40 V, Vf to 0 V and the time
duration to 2 s.
Step 6 – Hold the voltage at 0 V for 2 s
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Use the NavPad to change to the next step (TEST01-6). Select the V/I
Mode operation and set the OVP to 60 V, voltage to 0 V, current to 10
A and time duration to 2 s.
Step 7 – Go to sequence 2
Use the NavPad to change to the next step (TEST01-7). Select the
Goto operation and set the next step to TEST02. Press the ESC or
Menu key to move to the Save Sequence screen and press F1 for Yes.
Sequence 2 – On/Off Loop
From the Home Menu Page 1, select F3 to enter the main Sequence
Menu. Use the Navigation arrows to select the sequence labeled
TEST02. Press F4 (Del Test) to reset all steps in TEST02 to a NOP
condition. Press F3 to enter the Sequence Step menu.
Step 1 – Begin a loop and set the count to 5
Use the NavPad to change to the first step (TEST02-1). Select the
Loop operation and set the count to 5.
Step 2 – Turn on the voltage to 40 V for 2 s
Use the NavPad to change to the next step (TEST02-2). Select the V/I
Mode operation and set the OVP to 60 V, voltage to 40 V, current to
10A and time duration to 2 s. Press F1 to copy this step to the copy
buffer.
Step 3 – Turn off the voltage for 2 seconds
Use the NavPad to change to the next step (TEST02-3). Press the F2
key to paste the previously saved step into this step. Set the voltage
to 0 V, all other settings remain the same.
Step 4 – Execute the Next loop until all 5 are complete
Use the NavPad to change to the next step (TEST02-4). Select the
Next operation.
Step 5 – Stop the sequence
Use the NavPad to change to the next step (TEST02-5). Select the
Stop operation. Press the ESC or Menu key to move to the Save
Sequence screen and press F1 for Yes.
This completes programming of the sequences.
To run this sequence, from Home Menu Page 1, press F3 to enter the main
Sequence menu. Select TEST01 test sequence and press F1 to start the
sequence. The display will show progress of the sequence and should
complete in approximately 30 s.
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3.8.5
Operation
Constant-Power Mode
The Constant-Power Mode allows the supply to regulate the output to a
constant power setting as opposed to the more common constant voltage or
constant current modes of operation (see Section 3.2). (Note: This mode is
intended primarily for loads with response times greater than approximately
10 ms). While in this mode, the supply will continually adjust the voltage and
current levels to attempt to maintain a constant power to the load. In order to
provide additional protection for the load, voltage, and current limits may be
set while in the Constant-Power mode. If the unit cannot regulate to the
Constant Power setting due to load conditions, it will regulate either at the
voltage or current limit depending on the load demand. See Figure 3-12.
Constant Power Mode
Voltage
V limit
Constant Power setting
I limit
Current
Figure 3-12. Constant-Power Example
To access the Constant Power Setup menu, press the F4
key from Home Menu Page 1. Navigate to each editable
item and enter the appropriate values. Press F3 to
execute (the display jumps to Constant Power screen) or
F4 to abort (the display returns to Home Menu Page 1).
From Constant Power screen, the user may either edit the
limits again or exit Power mode. F3 jumps to Constant
Power Edit screen, and after inputting new values, press
F3 to make those changes effective and jump back to
Constant Power Screen, or press F4 to ignore the
changes and jump to Constant Power Exit.
From Constant Power Exit, F1 cancels the command to
exit and jumps back to Constant Power screen, or F4 exits
Constant Power and jumps to Home Menu Page 1 with the
Voltage, Current, and OVP values as set. (See Menu Map,
Section 3.7.8).
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3.8.6
Sorensen SGI Series
Home Timeout
The display jumps to this screen when the system has been
idle for 30 seconds. Press Escape or F4 to return to Home
Menu Page 1.
3.8.7
Display Brightness
Navigate from Home Menu Page 2, F1; use NavPad to dim
or increase the brightness. F1 saves the adjusted setting
for the remainder of the session and for future power-ups.
F4 maintains the setting for the remainder of the session
and returns the brightness to its previously saved level at
next power-up.
3.8.8
Lock Key
To prevent changes due to accidental pressing of the keys,
Lock the keys from Home Menu Page 2, F2. This screen
appears until F4 is pressed; a confirmation screen will
appear with instructions to press Enter to unlock keys (see
Section 3.7.12, Other Screens) before returning to Home
Menu.
NOTE: Lock Key only works while in the Constant-Voltage
or Constant-Current modes.
3.8.9
Language
The Language submenu allows the user to change the
default language for the menu selections. To select this
menu, from Home Menu Page 2 press F3 to go to the
Language Menu and select a language to work in. Pressing
F1 will save the selection and exit the Language Menu. The
next time the unit is powered up it will be in the last saved
language. Pressing F4 will keep the selected language only
for the remainder of the session and will revert to the
previously saved language at next power-up.
FOREIGN LANGUAGE
If the unit is set to a language foreign to the user, press the
escape key until Home Menu Page 1 appears. (Even in a
foreign language, the Voltage and Current values will still
display: value with the letter V and value with the letter A,
respectively. Also, there will be only one inter-screen
navigation arrow, which is located at the bottom of the
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screen). Use the NavPad to scroll down to Home Menu
Page 2 (there will be two inter-screen navigation arrows,
one at the top and one at the bottom of the screen). Press
F3, which jumps to the Language Menu, and then use the
NavPad to scroll to the user's native language.
3.8.10 Info
The Supply Information screen shows the date that the unit
was last calibrated, Model Number and Serial Number of
the unit, and version of the software. To access this screen,
from Home Menu Page 2 press F4.
3.8.11 Remote
Remote, F1, provides screens for either the Ethernet option
or the GPIB option, described in the following subsections.
ETHERNET
The Ethernet Remote Menu displays the Ethernet MAC
address of the power supply, which cannot be edited.
Access the menu from Home Menu Page 3, F1 key. This
menu also displays in the IP IN USE: line, the IP address
presently in use from either a static IP setting or from the
DHCP server, depending on how assigned. The Baud Rate
is editable via the NavPad; changing it here changes the
rear panel RS-232 SCPI baud rate. The initial factory setting
is 19200.
LXI
The LXI submenu (F3 from the Remote Menu) displays
two settings required by the LXI requirements.
PING Response: enables or disables the power supply’s
response to a ping packet sent from a remote Ethernet host. To
change the setting to either ENABLED or DISABLED, move the
editing arrows to the PING Response: line by pressing NavPad
left/right, and then change the setting by pressing NavPad
up/down. Press F1 to Cancel the change and return to the
Remote Menu screen, or press F4 to Save the changed setting.
Identification: controls the LAN LED on the power supply’s
rear panel. ENABLED causes the LAN LED to flash for visual
identification. DISABLED causes the LAN LED to be steady-lit
to indicated the power supply’s connected status. To change
the setting, move the editing arrows to the Identification field by
pressing NavPad left/right, and then change the setting by
pressing NavPad up/down. Press F1 to Cancel the change and
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return to the Remote Menu screen, or press F4 to Save the
changed setting.
ETHERNET
The Ethernet submenu (F4 from the Remote Menu) displays
the Primary (Pri Config) and Secondary (Sec Config)
Ethernet configurations, both of which are editable. It also
provides further submenus to change the Server Listener
Port (F3) and the Static IP address (F4).
The Primary configuration is attempted at power-up, and if it fails, the system
defaults to the Secondary configuration. However, both setting “DHCPacquired” and selecting “Auto IP Enabled” together in the Primary
configuration, prevents the power supply from trying the Secondary
configuration.
Useful configurations are described as follows:
Pri Config: STATIC IP
Sec Config: DHCP
At power-up the power supply will assign itself the configured static IP
address. If no other device is using the IP address, the power supply continues
with that static IP address. If some other device is using that address, the
power supply will move to Secondary and attempt to acquire an IP address
from a DHCP server repeatedly until it gets an address.
Pri Config: STATIC
Sec Config: DHCP+AUTOIP
At power-up the power supply will assign itself the static IP address. If no
other device is using the IP address, the power supply continues with that
static IP address. If some other device is using that address, the power supply
will move to secondary and attempt to acquire an IP address from a DHCP
server. If it cannot find a DHCP server to assign an address, it will assign itself
a link-local address. If no other device is using that link-local address it will use
it for 5 minutes minimum. At that time, if it is already in communication with
some other device, it will hold onto that link-local address until the
communication is finished and then retry DHCP. Then, if DHCP is not
available, the power supply will revert to the last successful link-local address
for another 5 minutes minimum.
Pri Config: DHCP
Sec Config: STATIC
At power-up the power supply will attempt to acquire an IP address from a
DHCP server. If it cannot find a DHCP server to assign an address, the power
supply will move to Secondary and assign itself the static IP address. If no
other device is using the IP address, the power supply continues with that
static IP address. If some other device is using the static IP address, the power
supply will move back to Primary and start the entire operation again.
Pri Config: DHCP+AUTOIP
Sec Config: will not be used with the Pri Config, above
At power-up the power supply will attempt to acquire an IP address from a
DHCP server. If it cannot find a DHCP server to assign an address, it will
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assign itself a link-local address. If no other device is using that link-local
address, it will use it for 5 minutes minimum. At that time, if it is already in
communication with some other device, it will hold onto the link-local address
until the communication is finished and then retry DHCP. If DHCP is not
available, the power supply will revert to the last successful link-local address
for another 5 minutes minimum.
PORT
The Server Port Menu is used to set the network TCP/IP
socket listening port. Valid values are 1025 to 65535. The
factory default setting is 9221. To change, press NavPad
up/down or use the numeric keys to enter specific values.
Press F4 to save the change or press F1 to return to the
Ethernet menu without changing anything.
STATIC IP CONFIGURATION
The Static IP menu allows manual setting not only of the IP
address, but also subnet mask, gateway and Domain
Name Server (DNS) server. The four IP octets in each field
are edited one at a time. Navigate to each octet by
pressing NavPad left/right, then change the value by either
pressing NavPad up/down or by entering a specific value
with the numeric keys.
IP: input any standard IP address. (Factory setting is 192.168.0.200). Press F4
to save the changes or press F1 to return to the Ethernet menu without
changing anything.
MASK: input a value that identifies which network segment your power supply
is on, consisting of 4 whole numbers, each ranging from 0 through 255,
separated by periods. (Factory setting is 255.255.255.0, a class-C network
subnet mask). Press F4 to save the change or press F1 to return to the
Ethernet menu without changing anything.
GATE: input the IP Address of any gateway that stands between the
instrument and any other network entities that communicate with the power
supply. (No factory setting). Press F4 to save the change or press F1 to return
to the Ethernet menu without changing anything.
DNS: input an IP address for the Domain Name System (DNS) server. Press
F4 to save the change or press F1 to return to the Ethernet menu without
changing anything.
GPIB
The Remote Menu for GPIB option (Home Page 3, F1)
allows setting of the GPIB address and the baud rate for
the RS232C interface. Use the NavPad to set the GPIB
address from 1 to 30, and the RS-232 baud rate from
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Operation
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2400 to 19200. Pressing F1 saves the new values in nonvolatile memory so that they will be remembered after
power down. Pressing F4 keeps the selected values only
until the unit is power down; then, at next power up, the
previously saved settings will be restored.
REMOTE OPERATION SCREENS
If the unit is being controlled remotely via Ethernet, GPIB or RS-232 interface,
special screens may appear during operation. The following describes those
displays:
 Remote Mode Primary display shows the actual values
for Volts and Watts. F4 jumps to Home Timeout
screen.
 Remote Mode Power display shows the set points on
the first line, actual values for Voltage and Current on
the second line, and at the bottom, the actual value for
Watts with a bar graph of its percent of full-scale
power. F4 jumps to the Constant Power screen.
 Remote Mode Sequence display shows what
sequence is running. F4 jumps to the local Sequence
Run screen.
3.8.12 System
The System submenu allows the user to display the total
system current when the unit is being paralleled with
other SG series supplies.
From Home Menu Page 3, press F2 to enter the System Menu. Determine the
Total System Current by adding the maximum current rating of all supplies in
parallel. Use NavPad or the KeyPad "0-9" to enter the appropriate value. F3
resets Total System Current to the supply default value; F4 keeps the
displayed value and jumps to Home Menu Page 1.
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3.8.13 Warning Screens
There are two warning screens that may appear during the course of
operation:
HARD FAULT
Hard Fault warns that a hardware fault has occurred in a power module, such
as an overtemperature, undervoltage of AC input, or converter failure. These
conditions might clear themselves, however, if they continue to occur after
pressing the F4 (ClrFault) key, contact the factory for service assistance.
OVP FAULT
OVP Fault occurs when the output voltage of the supply exceeds the OVP
setting. When this occurs the output is disabled, and voltage and current
output go to 0. To clear the display, press F1 (Clr OVP). The display will
return to Home Menu Page 1, and the output will remain disabled.
Note: It is important to correct the condition that caused the OVP, prior to
re-enabling the output.
3.9
Remote Analog Control Connector (J1)
The Analog Control connector of the Remote Analog Interface on the rear
panel allows the unit to be configured for different operating configurations:
front panel (local) and remote programming of voltage, current, and OVP,
voltage and current monitoring, output enable/disable, etc. Refer to Figure
3-13 for the connector pin-out diagram. The setup and operating requirements
of each configuration are provided in Sections 3.10 through 3.13.3.
The SGI also has the capability of providing summing of remote analog input
with the set values on the front panel (or programmed values via the digital
interface) for voltage, current and OVP. This capability provides a means to
modulate a set value with the signal on the voltage, current and OVP analog
input. If the user only desires to control the unit with the analog input, all the
front panel values (V/I/OVP) or digital settings should be set to zero.
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CAUTION!
If standard, Remote Non-Isolated Analog Interface programming is used, the
programming return (J1-6 and J1-24) is at the same potential as the negative
output terminal of the power supply (not isolated). Proper connection should be
made to signal returns with respect to input programming equipment. Improper
connection might result in ground/return loops and, as a result, internal power
supply damage might occur; output current could then flow by way of the
external connection to the J1 common (J1-6 and J1-24). Refer to Table 3–5.
REMOTE ANALOG ISOLATED INTERFACE CONTROL (OPTION)
The Remote Isolated Analog Interface control uses the same Analog Control
connector (J1) as the standard interface. This option fully isolates remote
control signals and allows control of units not connected to a common ground.
Control ground is isolated from output power (output negative terminal), which
protects against potential damage from systems with high electrical noise or
large ground loop currents.
Note: Some standard, Non-Isolated Analog Interface programming signals
are not available with this option; see Table 3–5 for details.
CAUTION!
The Remote Isolated Analog Interface option is not intended to allow operation
of the power supply at excessive voltages. Operation of Isolated Analog
Interface signals should be at SELV safety voltage conditions to chassis
ground. Refer to Section 1.2.2 for maximum terminal voltages.
Figure 3-13. Analog Control Connector (J1) Pin-Out
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Pin
Reference
Operation
Electrical
Parameters
Functional Description
Isolated remote output on/off. Externally supplied AC/DC voltage
source for on/off control. A positive (+) 12-240 VAC or 6-120 VDC
voltage will enable the output, i.e., turn on the output of the supply.
This input control is optically isolated from the power supply circuit
up to 500 VDC. Circuit return Pin J1-2 (ISO RTN). See
Section 3.13.
1
ISO ON/OFF
Zin ~ 6 k
2
ISO RTN
—
3
REM OV
SET
Zin ~ 20 k
Remote overvoltage set. A remote signal sets the overvoltage trip
level. 0.25-5.5 VDC = 5-110%. Apply a 10.5-13.3 VDC signal for
7 s to reset an OVP condition. Circuit return Pin J1-6 (COM). See
Section 3.12.
4
VP RTN
Zin ~ 10 k
Voltage programming return. Used with Pins J1-9, J1-15 or J1-21
and must be referenced to Pin J1-6 (COM) circuit common.
5
ON/OFF
Must sink
~ 1 mA to
enable
Remote output on/off. Switch/relay contacts or a direct short
between this terminal and Pin J1-6 (COM) circuit common, enables
the output, i.e., turns on the output of the supply See Section 3.13.
†
6
COM
7
I MON
8
Not Used
9
10
-
Isolated circuit return used with isolated on/off control Pins J1-1
and J1-14.
Circuit common connected to Pin J1-24. Same potential as the
negative output terminal.
Zout ~100 
Output current monitor. 0-10 VDC equals 0-100% rated current.
Minimum load resistance 100 kCircuit return Pin J1-6 (COM).
VP 5V
Zin ~ 10 k
Remote voltage programming using a 0-5 VDC source.
Do not exceed 13.3 VDC. Circuit return Pin J1-4 or Pin J1-20
(VP RTN). See Section 3.11.
IP 5V
Zin ~ 10 k
Remote current programming using a 0-5 VDC source.
Do not exceed 13.3 VDC. Circuit return Pin J1-23 or Pin J1-25
(IP RTN). See Section 3.10.
11
12
Not Used
13
14
ISO
TTL/CMOS
Zin ~ 2.2 k
Isolated TTL/CMOS on/off control. A high state TTL/CMOS voltage
enables the output, i.e., turns on the output of the supply, and a low
state or open connection disables the output, i.e.., turns off the
output of the supply. Circuit return Pin J1-2 (ISO RTN). See Section
3.13.
15
VP 10V
Zin ~ 20 k
Remote voltage programming using a 0-10 VDC source.
Do not exceed 25 VDC. Circuit return Pin J1-4 or Pin J1-20
(VP RTN). See Section 3.11.
16
IP 10V
Zin ~ 20 k
Remote current programming using a 0-10 VDC source.
Do not exceed 25 VDC. Circuit return Pin J1-23 or Pin J1-25
(IP RTN). See Section 3.10.
Zout ~100 
Fault state output. A high state (approximately +10 VDC) indicates
a has occurred in a power module, such as overtemperature,
undervoltage of AC input, or converter failure; front panel Fault LED
will be lit. Circuit return Pin J1-6 (COM).
17
FAULT
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Operation
Pin
Electrical
Parameters
Functional Description
18
S/D FAULT
Zout ~100 
19
V MON
Zout ~100 
Output voltage monitor. 0-10 VDC equals to 0-100% rated voltage.
Minimum load resistance 100 kCircuit return Pin J1-6 (COM).
20
VP RTN
Zin ~10 
22
*
Reference
Shutdown fault. This terminal goes to high state in the event of
converter, temperature, overvoltage or bias supply fault. A
7-13.3 VDC signal can be applied to this pin to shutdown the output
of the unit. An 8 VDC minimum output signal is provided into a
10 kminimum load, in the event of an internally generated
shutdown. Circuit return Pin J1-6 (COM). See Section 3.13.3.
21
†
Sorensen SGI Series
VP RES
IP RES
23
IP RTN
24
COM
25
IP RTN
†
Voltage programming return. Used with Pins J1-9, J1-15 or J1-21
and must be referenced to Pin J1-6 (COM) circuit common.
*
~ 10.8 V
compliance
1 mA current source for remote voltage programming using
resistance. 0-5 kΩ resistor referenced to Pin J1-4 or Pin J1-20
(VP RTN) will program the output voltage from 0-100%. See
Section 3.11.
*
~ 10.8 V
compliance
1 mA current source for remote current programming using
resistance. 0-5 kΩ resistor referenced to Circuit return Pin J1-23 or
Pin J1-25 (IP RTN) will program the output current from 0-100%.
See Section 3.10.
Zin ~ 10 k
Current programming return. Used with Pins J1-10, J1-16 or J1-22
and must be referenced to Pin J1-6 (COM) circuit common.
Zin ~ 10 k
Circuit common connected to Pin J1-6. Same potential as the
negative output terminal.
Current programming return. Used with Pins J1-10, J1-16 or J1-22
and must be referenced to Pin J1-6 (COM) circuit common.
With the Remote Isolated Analog Interface control (option), the control ground is isolated from
output power (output negative terminal). See Section 1.2.2 and Section 3.15.
Signals not available with Remote Isolated Analog Interface control (option).
Table 3–5. Analog Control Connector (J1), Designations and Functions
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Operation
3.10 Remote Current Programming
Remote current programming is summed with the front panel or digital setting;
see Section 3.9. Remote current programming is used for applications that
require the output current be programmed (controlled) from a remote
instrument. An external resistance or external voltage source may be used as
a programming device. When using remote current programming, a shielded,
twisted-pair cable is recommended to prevent noise interference to
programming signals.
3.10.1 Remote Current Programming by Resistance
The resistance-programming coefficient for output current is
(100% rated output current) / 5 kΩ, with input at Pin J1-22 (IP RES) and return
to Pin J1-23 (IP RTN). An internal current source, factory-set at 1 mA, from
Pin J1-22 (IP RES) is utilized to drive the resistance. This produces a transfer
function for output current, as follows:
Iout = R * (100% rated output current) / 5 kΩ), with R in ohms.
If multiple switches or relays are used to select resistors to program different
current levels, make-before-break contacts are recommended.
Note: If an external resistance is used for remote programming, the current
programming return Pin J1-23 (IP RTN), must be connected directly to, or
within ±3 V, of the circuit common, Pins J1-6 and J1-24. See Figure 3-14 for
connection requirements.
Figure 3-14. Remote Current Programming Using Resistance
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Operation
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3.10.2 Remote Current Programming by Voltage Source
Two inputs are provided for remote voltage-programming of the output current:
5 VDC full-scale and 10 VDC full-scale. The DC voltage source is connected
between Pin J1-10 (IP 5 V) for 5 VDC source, or Pin J1-16 (IP 10 V) for
10 VDC source, and the return Pin J1-23 (IP RTN).
The corresponding voltage-programming coefficients for output current are
(100% rated output current) / 5 VDC, or (100% rated output current) /10 VDC,
from the respective inputs with return to Pin J1-23 (IP RTN). This produces
transfer functions for output current, as follows:
Iout = Vdc * (100% rated output current) / 5 VDC), with Vdc in volts, or
Iout = Vdc * (100% rated output current) / 10 VDC), with Vdc in volts.
Note: The return Pin J1-23 (IP RTN) must be referenced directly to, or within
±3 V, of the circuit common, Pins J1-6 and J1-24. See Figure 3-15 for
connection requirements.
1
16 IP 10V
COM 6
IP 5V 10
0-5 VDC
VOLTAGE
SOURCE
+
-
23 IP RTN
13
+
-
0-10 VDC
VOLTAGE
SOURCE
Figure 3-15. Remote Current Programming Using 0-5 VDC or 0-10 VDC Source
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Operation
3.11 Remote Voltage Programming
Remote voltage programming is summed with the front panel or digital setting;
see Section 3.9. Remote voltage programming configuration is used for
applications that require the output voltage be programmed (controlled) from a
remote instrument. An external resistance or external voltage source may be
used as a programming device. When using remote voltage programming, a
shielded, twisted-pair cable is recommended to prevent noise interference to
programming signals.
3.11.1 Remote Voltage Programming by Resistance
The resistance-programming coefficient for output voltage is
(100% rated output voltage) / 5 kΩ, with input at Pin J1-21 (VP RES) and
return to Pin J1-20 (VP RTN). An internal current source, factory-set at
1 mA, from Pin J1-21 (VP RES) is utilized to drive the resistance. This
produces a transfer function for output voltage, as follows:
Vout = R * (100% rated output voltage) / 5 kΩ), with R in ohms.
Note: If an external resistance is used for remote programming, the voltage
programming return Pin J1-20 (VP RTN) must be connected directly to, or
within ±3 V, of the circuit common, Pins J1-6 and J1-24. See Figure 3-16 for
connection requirements.
1
COM 6
14
20 VP RTN
21 VP RES
13
0-5 Kohms
PROGRAM
Figure 3-16. Remote Voltage Programming Using Resistance
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Operation
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3.11.2 Remote Voltage Programming by Voltage Source
Two inputs are provided for remote voltage-programming of the output
voltage: 5 VDC full-scale and 10 VDC full-scale. The DC voltage source is
connected between Pin J1-9 (VP 5 V) for 5 VDC source, or Pin J1-15 (VP 10
V) for 10 VDC source, and the return terminal J1-20 (VP RTN).
The corresponding voltage-programming coefficients for output voltage are
(100% rated output voltage) / 5 VDC, or (100% rated output voltage) /10 VDC,
from the respective inputs with return to Pin J1-20 (VP RTN). This produces
transfer functions for output voltage, as follows:
Vout = Vdc * (100% rated output voltage) / 5 VDC), with Vdc in volts, or
Vout = Vdc * (100% rated output voltage) / 10 VDC), with Vdc in volts.
Note: The return terminal (VP RTN) must be referenced directly to, or within
±3 V, of the circuit common, Pins J1-6 and J1-24. See Figure 3-17 for
connection requirements.
1
COM 6
15 VP 10V
20 VP RTN
VP 5V 9
+
0-5 VDC
VOLTAGE
SOURCE
+
13
-
0-10 VDC
VOLTAGE
SOURCE
-
Figure 3-17. Remote Voltage Programming Using 0-5 VDC or 0-10 VDC Source
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Operation
3.12 Remote Overvoltage Programming
CAUTION!
Do not program the remote overvoltage setpoint greater than 10%
above the power supply rated voltage (5.5 VDC programming voltage
source), as internal power supply damage might occur (except reset,
see note below).
Remote Overvoltage Protection (OVP) programming is summed with the front
panel or remote digital setting; see Section 3.9. A remote DC voltage source
can be connected externally between Pins J1-3 (REM OV SET) and J1-6
(COM) to set the output overvoltage trip level. A 0.25-5.5 VDC signal equals
5-110% of rated output voltage. See Figure 3-18 for connection requirements.
Note: To reset an OVP, apply a 10.5–13.3 VDC signal to Pin J1-3 for a
minimum of 7 s.
1
REM OV SET 3
0-5.5 VDC
VOLTAGE
SOURCE
+
COM 6
13
Figure 3-18. Remote Overvoltage Programming Using DC Voltage Source
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Operation
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3.13 Remote Output On/Off Control
Remote output on/off control may be accomplished by contact closure, or
through an opto-isolated interface with external voltage sources, AC/DC or
TTL/CMOS.
3.13.1
Remote Output ON/OFF by Contact Closure
Application of a contact closure between Pins J1-5 and J1-6 will enable the
output. See Figure 3-19 for connection requirements.
1
14
ON/OFF 5
6
25
Figure 3-19. Remote Output On/Off Control by Contact Closure
3.13.2
Remote Output ON/OFF Control by External Source
Application of AC/DC voltage between Pins J1-1 and J1-2, or TTL/CMOS
voltage between Pins J1-14 and J1-2, will turn on the power supply; this
interface is opto-isolated from circuit common, Pins J1-6 and J1-24. See
Figure 3-20 and Figure 3-21 for connection requirements.
+
AC OR DC
SOURCE
ISO ON/OFF 1
14
ISO RTN 2
-
25
Figure 3-20. Remote Output On/Off Using Isolated AC or DC Source
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Operation
1
14 ISO TTL/CMOS
ISO RTN 2
25
Figure 3-21. Remote Output On/Off Using Isolated TTL/CMOS Source
3.13.3 Remote Shutdown(S/D)
A remote +12 VDC voltage can be connected externally between Pin J1-18
(S/D Fault) and Pin J1-24 (COM) to disable, i.e., shut down the output of the
power supply; see Figure 3-22. A low-level, or opening the +12 VDC signal,
will allow the unit to revert to normal operation.
Figure 3-22. Remote Shutdown Using DC Voltage Source
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Operation
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3.14 Remote Sensing
Remote voltage sensing is recommended at all times, whether the sense
leads are connected to the load or to the output terminals. Remote sensing is
required to meet the performance specifications of the power supply. It is
essential in applications where the load is located some distance from the
power supply, or the voltage drop of the power output leads significantly
interferes with load regulation.
The voltage accuracy specifications are valid only with remote sense
connected. Disconnecting the remote sense leads will introduce an error, with
the output voltage increasing. The error occurs because an additional
resistance (PTC local resistor network in Figure 3-23) is present in the circuit
of the resistor divider for voltage sensing, to provide the default local sensing
of the output voltage at the output terminals. When remote sense is connected
the PTC local resistor network is short-circuited, effectively removing it from
the circuit.
Remote Sense
Resistor Network
Sense (+)
Sense (-)
Remote
Sense
Amplifier
PTC
Local
Resistor
Network
Out (+)
Output
Power
Converter
Out (-)
Power Supply
Figure 3-23. Remote Voltage Sensing Network
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Operation
CAUTION!
If the power supply is operated with load power lines
disconnected and remote sense lines connected, internal
power supply damage might occur, since output load current
could flow through the remote sense terminals.
To use remote voltage sensing, connect the power supply as described below
in Figure 3-24 for 10V-800V models, and Figure 3-25 for the 1000V model. A
shielded, twisted-pair cable is recommended to avoid potential noise
interference.
Load
J3
1 2 3
-
+
J3-1: Sense (+)
J3-2: Sense (-), 10V-600V Only
J3-3: Sense (-), 800V Only
Power
Supply
Output
Figure 3-24. Remote Sense Connection at the Load, 10V-800V Models
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Operation
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Load
J3
1 2 3 4
-
+
Power
Supply
Output
J3-1: Sense (+)
J3-2: Not Used
J3-3: Not Used
J3-4: Sense (-)
Figure 3-25. Remote Sense Connection at the Load, 1000V Model
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Operation
3.15 Floating and Polarized Output
The SGI Series supply can be set up for a Positive or Negative supply, as well
as standard operation as a floating output supply.
FLOATING OUTPUT
The output terminals are normally floating from chassis ground. No extra
steps or connections are required for a floating output.
POSITIVE SUPPLY SETUP
Attach the negative output terminal to the supply chassis. The output
reference is now chassis ground. When the output voltage is set or
programmed, the supply will output a positive potential from chassis ground.
NEGATIVE SUPPLY SETUP
Attach the Positive output terminal to the supply chassis. The output
reference is now chassis ground. When the output voltage is set or
programmed, the supply will output a negative potential from chassis
ground.
CAUTION!
The negative output terminal may be floated up to ±300V (PK), maximum,
with respect to chassis ground. Exceeding the limit will be detected as a
fault by a protective supervisory monitor and shutdown of the output will
be executed; this condition will be latched, requiring reset to resume
normal operation.
CAUTION!
Floating the negative output terminal subjects the internal control circuitry of
the power supply to the same potential as present at the negative output
terminal. In a unit with the standard Non-Isolated Analog Interface, the signals
of control connector, J1, would float at the same potential as the negative
output terminal. Damage might occur if the signals of the Non-Isolated Analog
control connector are connected to an external ground referenced device, due
to unintentional ground loop currents that this connection could generate. To
correct ground loop problems, it is advised to use the optional Isolated Analog
Interface in order to isolate the external signals from the internal control
circuitry of the supply. Refer to the Section 1.2.2 for additional information.
M550221-01 Rev U
3-53
Operation
Sorensen SGI Series
3.16 Parallel and Series Operation
Parallel and series modes of operation are used for applications requiring
more current or voltage than is available from a single power supply. To meet
the requirements for greater output current or voltage, up to five supplies could
be connected in parallel, or up to two supplies could be connected in series.
3.16.1 Parallel Operation
In order to connect up to five power supplies in parallel, use a “Master/Slave”
daisy-chain wiring configuration as follows; refer to Figure 3-26:
(There are two separate 9-pin connectors on the upper left rear panel of each
power supply, marked “PAR OUT” and “PAR IN”).
1. Programming, readback, and control is performed through the Master.
2. Beginning with the power supply that is to function as the Master, use an
interface cable (P/N 890-453-03) to connect the PAR OUT connector on
the designated Master power supply to the PAR IN connector on the
second power supply (Slave 1).
3. On the second power supply (Slave 1), use another interface cable to
connect the PAR OUT connector to the PAR IN connector of the third
power supply (Slave 2). Continue these interconnections up to a
maximum of 5 power supplies.
4. Connect the Positive output terminals of all the power supplies and the
load.
5. Connect the Negative output terminals of all the power supplies and the
load.
6. Confirm that there are no shorts between the Positive and Negative
output terminals.
7. Referring to Figure 3-26, connect twisted-pair sense cables as follows;
ensure that all twisted-pair cables are as short as possible:
All slave units shall have twisted-pair cables from their sense terminals to
their own output terminals.
For remote sense at the load, the master unit shall have a twisted-pair
cable from its own sense terminals to the load terminals.
For remote sense at the output terminals (local sense connection), the
master unit shall have a twisted-pair cable from its own sense terminals
to the output terminals of its own chassis.
Note: The OVP circuit remains active for all units in parallel operation. If the
units are set to different OVP levels, the paralleled system will trip according
to the lowest setting. For ease of use, adjust the OVP levels for the slaves to
maximum and adjust the master OVP level to the desired setting.
3-54
M550221-01 Rev U
Sorensen SGI Series
Operation
Figure 3-26. Parallel Connection and Remote Sense
M550221-01 Rev U
3-55
Operation
Sorensen SGI Series
3.16.2 Series Operation
Series operation is used to obtain a higher aggregate output voltage using two
units. Each supply is operated individually, and is set up as follows:
Connect the negative terminal (–) of one supply to the positive terminal (+) of
the next supply; both units must be of the same model. The total voltage
available is the sum of the maximum voltages of each supply. Each supply
displays its own output voltage, and the load voltage is the sum of each front
panel display.
CAUTION!
Under no condition should the negative (–) output terminal of any
power supply exceed 300 V to chassis (earth) ground. This is
limited by the isolation and creepage/clearance distances internal
to the power supply construction. If a higher output voltage range
is required, contact the factory for availability.
Note:

The maximum allowable current for a series string of power supplies
is the rated output current of a single supply of the string.

Remote sensing at the load should not be used during series
operation. Each power supply should have its remote sense leads
connected to its own output terminals.

An anti-parallel diode (power diode capable of the maximum current
of the series group, connected across the output, but reverse biased) is
recommended to protect against sinking current into a supply should one
supply be “ON” while another other is “OFF.” (Refer to Section 2.6.1).
3-56
M550221-01 Rev U
SECTION 4
CALIBRATION AND VERIFICATION
4.1
Introduction
This section provides calibration and verification procedures for the SGI Series
power supplies and the Remote Isolated Analog Interface control (option).
Refer to the SG Programming Manual for calibration of display readback and
remote digital programming option.
4.1.1
Calibration and Verification Cycle
Annual calibration and verification is recommended. Calibrate only as needed.
4.1.2
Preparation
WARNING!
Hazardous voltages exist at the rear of the supply. Care must be
taken to avoid contact with the AC input and DC output terminals.
Only authorized personnel should perform this procedure.
Only technically trained personnel, who understand the operation of the power
supply and are capable taking accurate readings should perform calibration.
The calibration procedures require two digital multimeters and a precision
shunt for measurement of voltage and current. To set up for the calibration
procedures, perform the following initial steps:
1. Disconnect AC mains power.
2. Connect a precision current shunt, that is suitably derated, across the output of
the power supply; a fan might be required to cool the shunt. Connect remote
sense leads, and ensure that the digital voltmeter that measures output
voltage is connected across the sense leads.
M550221-01 Rev U
4-1
Calibration and Verification
4.2
Sorensen SGI Series
Calibration and Verification Procedures
WARNING!
Hazardous voltages might be present on the output, even after it is disabled,
due to stored capacitive charge. Disconnect the AC mains input, and allow
5 minutes to drain the output capacitive charge to safe levels, before
connecting or removing output wiring.
All calibration potentiometers are on circuit board assemblies located at the
front of the chassis, and adjustment of the potentiometers is made from the top
of the chassis. Refer to Figure 4-1 for the physical location of the
potentiometers. Some of the models will require partial removal of the top
cover of the chassis to gain access to the potentiometers. This is dependent
on the type of chassis, and whether the Ethernet option is installed.
The 6U-chassis units and earlier 3U-chassis units have access holes in the top
cover that allow adjustment of the calibration potentiometers without removing
the top cover. However, if the Ethernet option is installed, some of the
potentiometers are covered by a ribbon-cable. To adjust those
potentiometers, the cover should be partially removed, and slid towards the
rear of the chassis just enough to expose the location of the potentiometers,
but with the cover still on top of the chassis. The ribbon-cable should then be
carefully moved sufficiently to expose the adjustment screws of the
potentiometers.
The latest 3U-chassis units do not have access holes in the top cover, and the
top cover must be partially removed to perform calibration. The cover should
be slid towards the rear of the chassis just enough to expose the
potentiometers, but with the cover still on top of the chassis. If the Ethernet
option is installed, a ribbon-cable must be moved, as described above for the
6U-chassis.
When a unit is configured with the Remote Isolated Analog Interface option,
calibration must be first performed on that option (refer to Section 4.3), before
the standard calibration and verification procedures of Section 4.2 are
performed.
4-2
M550221-01 Rev U
Sorensen SGI Series
4.2.1
Calibration and Verification
Constant-Current Mode
1. Setup the SGI Series unit to operate in remote current programming
mode using an external 0-5 VDC voltage source, as shown in Figure 3-15
in Section 3.10. Ensure that Pins J1-5 and J1-6 are jumpered to enable
the output.
2. Connect a precision current shunt across the output of the power supply,
and attach a precision meter across the shunt Kelvin terminals. (see
Section 4.1.2 ).
3. Attach a precision meter in parallel with the voltage programming source.
4. Set the voltage source to 0.0 V ±1mV.
5. Apply AC power, turn the unit on, and press the "Output On" button to
enable the output (see Section 3.1.1).
6. Set the programming voltage to 5.0 V ±1mV.
7. Verify that the unit produces 100% ±0.8% of rated output current. If
necessary, adjust R69 for 100% of rated output current through the shunt.
8. Set the programming source for 0.5 V ±1mV.
9. Verify that the unit produces 10% ± 0.8% of rated output current. If
necessary, adjust R55 for 10% of rated output current through the shunt.
10. Repeat the steps above as required to obtain the required accuracy.
4.2.2
Constant-Voltage Mode
1. Disconnect the AC mains power to the unit. Remove the current shunt
from the output and verify that there is no load attached.
2. Remove the precision meter leads from the current shunt and apply them
across the output terminals.
3. Setup the SGI series unit to operate in remote voltage programming
mode using an external 0-5 VDC voltage source, as shown in Figure 3-17
in Section 3.11. Ensure that Pins J1-5 and J1-6 are jumpered to enable
the output.
4. Apply AC power, turn the unit on, and press "Output On" button to enable
the output (see Section 3.1.1).
5. Set the programming source to 5.0 V ±1m V.
6. Verify that the unit produces 100% ±0.25% of rated output voltage. If
necessary adjust R74 for 100% of rated output voltage.
7. Set the programming source to 0.5 V ±1 mV.
M550221-01 Rev U
4-3
Calibration and Verification
Sorensen SGI Series
8. Verify that the unit produces 10% ±0.25% of rated output voltage. If
necessary adjust R90 for 10% of rated output voltage.
9. Repeat the steps above as required to obtain the required accuracy.
10. Remove all connections to the remote analog control connector (J1),
except the jumper between Pins J1-5 and J1-6; ensure that they are
jumpered to enable the output, and allow front panel control.
4.2.3
Resistive-Control Programming Current Sources
(Standard, Non-Isolated Analog Interface Control)
1. Disconnect the AC mains power to the unit.
2. Connect a precision current shunt across the output of the power supply,
and attach a precision meter across the shunt Kelvin terminals. (see
Section 4.1.2).
3. Setup the SGI series unit to operate in remote current programming mode
using resistance by connecting a 5 kΩ (0.1% or better tolerance) resistor,
as shown in Figure 3-14 in Section 3.10. Ensure that Pins J1-5 and J1-6
are jumpered to enable the output.
4. Attach a precision meter across the shunt Kelvin terminals.
5. Apply AC power, turn the unit on, and press “Output On” button to enable
the output (see Section 3.1.1).
6. Adjust R35 so that the measured output current equals 100% rated output
current.
7. Disable AC power to the unit.
8. Setup the SGI series unit to operate in remote voltage programming
mode using resistance by connecting a 5 kΩ (0.1% or better tolerance)
resistor, as shown in Figure 3-16 in Section 3.11. Ensure that Pins J1-5
and J1-6 are jumpered to enable the output.
9. Apply AC power, turn the unit on, and press “Output On” button to enable
the output (see Section 3.1.1).
10. Adjust R33 so that the measured output voltage equals 100% rated
output voltage.
11. Turn off AC power, and remove all connections to the remote analog
control connector (J1), except the jumper between Pins J1-5 and J1-6;
ensure that they are jumpered to enable the output, and allow front panel
control.
4-4
M550221-01 Rev U
Sorensen SGI Series
4.2.4
Calibration and Verification
Change Calibration Date
To change the calibration date stored in memory, issue the following SCPI
commands (see SG Series Programming Manual for command details)
through the remote digital interface, either RS-232, GPIB, or Ethernet:
VIA RS-232 OR GPIB
CAL:UNLOCK “6867”
CAL:DATE YYYYMMDD
CAL:STORE
CAL:LOCK
VIA ETHERNET
CAL:UNLOCK “6867”
CAL:MOD;LASTCALDATE MM DD YYYY
CAL:MOD:NEXTCALDATE MM DD YYYY
CAL:STORE
CAL:LOCK
4.3 Remote Isolated Analog Interface (Option)
Calibration and Verification Procedure
CAUTION!
Hazardous voltages may be present on the output, even after it is
disabled, due to stored capacitive charge. Disconnect the mains AC
input, and allow 5 minutes to drain the output capacitive charge to
safe levels before connecting or removing output wiring.
4.3.1
Constant-Current Mode
1. Disconnect AC mains power to the unit. Setup the SGI Series unit to
operate in remote current programming mode using an external 0-5 VDC
voltage source, as shown in Figure 3-15 in Section 3.10. Ensure that Pins
J1-5 and J1-6 are jumpered to enable the output.
2. Connect a precision current shunt across the output of the power supply,
and attach a precision meter across the shunt Kelvin terminals. (see
Section 4.1.2).
3. Attach a precision meter in parallel with the voltage programming source.
M550221-01 Rev U
4-5
Calibration and Verification
Sorensen SGI Series
4. Set the voltage source to 0.0 V 1mV.
5. Apply AC power, turn the unit on, and press “Output On” button to enable
the output (see Section 3.1.1).
6. Program the voltage to 100% of rated output voltage.
7. Set the programming voltage to 5.0 V 1mV.
8. Verify that the unit produces 100% 0.8% of rated output current. If
necessary, adjust R33 for 100% of rated output current through the shunt.
9. Set the programming source for 0.5 V 1 mV.
10. Verify that the unit produces 10% 0.8% of rated output current. If
necessary, adjust R47 for 10% of rated output current through the shunt.
11. Repeat the steps above as needed to obtain the required accuracy.
4.3.2
Constant-Voltage Mode
1. Disconnect AC mains power to the unit. Remove the current shunt from
the output and verify that there is no load attached.
2. Remove the precision meter leads from the current shunt and apply them
across the output terminals.
3. Setup the SGI Series unit to operate in remote voltage programming
mode using an external 0-5 VDC voltage source, as shown in Figure 3-17
in Section 3.11. Ensure that Pins J1-5 and J1-6 are jumpered to enable
the output.
4. Apply AC power, turn the unit on, and press “Output On” button to enable
the output (see Section 3.1.1).
5. Program the current to 100% of rated output current.
5. Verify that the unit produces 0 V ±0.25% of rated output voltage. If
necessary adjust R35 to obtain zero output volts.
6. Set the programming voltage to 5.0 V 1 mV.
7. Verify that the unit produces 100% ±0.25% of rated output voltage. If
necessary adjust R39 for 100% of rated output voltage.
8. Set the programming source to 0.5 V ±1 mV.
9. Verify that the unit produces 10% ±0.25% of rated output voltage. If
necessary adjust R35 for 10% of rated output voltage.
10. Repeat the steps above as needed to obtain the required accuracy.
4-6
M550221-01 Rev U
Sorensen SGI Series
Calibration and Verification
11. Remove all connections to the remote analog control connector (J1),
except the jumper between Pins J1-5 and J1-6; ensure that they are
jumpered to enable the output, and allow front panel control.
4.3.3
Change Calibration Date
To change the calibration date stored in memory, issue the following SCPI
commands (see SG Series Programming Manual for command details)
through the remote digital interface, either RS-232, GPIB, or Ethernet:
VIA RS232 OR GPIB
CAL:UNLOCK “6867”
CAL:DATE YYYYMMDD
CAL:STORE
CAL:LOCK
VIA ETHERNET
CAL:UNLOCK “6867”
CAL:MOD;LASTCALDATE MM DD YYYY
CAL:MOD:NEXTCALDATE MM DD YYYY
CAL:STORE
CAL:LOCK
M550221-01 Rev U
4-7
Calibration and Verification
Sorensen SGI Series
STANDARD CALIBRATION ADJUSTMENT
R35 = VPRES (1 mA) Adjust
R33 = IPRES (1 mA) Adjust
R74 = 100% Voltage Adjust
R90 = Zero Voltage Adjust
R69 = 100% Current Adjust
R55 = Zero Current Adjust
ISOLATED ANALOG (OPTION)
CALIBRATION ADJUSTMENT
R39 = 100% Voltage Adjust
R35 = Zero Voltage Adjust
R33 = 100% Current Adjust
R47 = Zero Current Adjust
FACTORY USE ONLY
R37
R46
R82
R104
R54
R45
R71
R54
R86
R73
(In units without access holes in the top, the potentiometers are mapped to the same location
under the top cover)
Figure 4-1. Potentiometer Locations
4-8
M550221-01 Rev U
SECTION 5
MAINTENANCE
5.1
Introduction
This chapter contains preventive maintenance information for the SGI Series
power supplies.
WARNING!
All maintenance that requires removal of the cover of the unit should
only be done by properly trained and qualified personnel. Hazardous
voltages exist inside the unit. Disconnect the supply from the AC mains
input before performing any maintenance. Service, fuse verification, and
connecting of wiring to the chassis must be accomplished at least
5 minutes after AC input power has been removed with an external
disconnect switch. Do not touch any circuits and/or terminals that are
energized.
5.2
Preventive Maintenance
WARNING!
The OFF position of the front panel power switch does not remove AC
input from internal circuits or input terminal blocks. Disconnect external
AC input before servicing unit.
CAUTION!
For safe and continued operation of the SGI Series, always operate the
unit in a temperature and humidity controlled, indoor area. Exposure to
conductive contaminants or corrosive compounds/gases that could be
ingested into the chassis could result in internal damage. Keep the rear
and sides of the unit free of obstructions to ensure proper ventilation.
M550221-01 Rev U
5-1
Maintenance
Sorensen SGI Series
No routine maintenance on the SGI Series is required, aside from periodic
cleaning of the unit and inspection, as required by the environmental operating
conditions.:

Once a unit is removed from service, vacuum all air vents, including
the front panel grill.

Clean the exterior with a mild solution of detergent and water. Apply
the solution onto a soft cloth, not directly to the surface of the unit. To
prevent damage to materials, do not use aromatic hydrocarbons or
chlorinated solvents for cleaning.

Check external connections for integrity of insulation, loose contacts,
and proper torque.
If there is any evidence of short-circuits or arcing, overheating, or
corrosion, contact the factory for recommended service.
5-2
M550221-01 Rev U
Sorensen SGI Series
5.3
Maintenance
Fuses
There are no user replaceable components in the power supply. Internal fuses
are listed in Table 5–1. Fuses are sized for fault isolation, and, an open fuse
might indicate that a circuit component has been damaged. Contact the factory
for further assistance..
CAUTION!
To reduce the risk of fire or electrical shock, replace fuses only
with the same type and rating.
Assembly
Bias Supply PWA
Power Module
Converter Control PWA
Manufacturer
Reference
Rating
F1, F2, F3
5 A, 600V
Littelfuse KLK-5
F1, F2, F3
30 A, 600V
Littelfuse KLK-30
Part No.
Table 5–1. Fuse Ratings
M550221-01 Rev U
5-3
Maintenance
Sorensen SGI Series
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5-4
M550221-01 Rev U
INDEX
A
AC Input Connector, 3U, 2-6
Screw Torque, 2-6
Agency Approvals, 1-3
Analog Control Connector (J1), 3-39
Isolated Analog Voltage, 3-40
J1 Connector Pin-Out, 3-40
Return Connection, 3-40
C
Calibration and Verification
Remote Isolated Analog (Option), 4-5
Calibration and Verification, 4-1, 4-2
Calibration Date, 4-5
Constant-Current Mode, 4-3
Constant-Voltage Mode, 4-3
Resistive-Control Current Sources, 4-4
Calibration and Verification
Isolated Analog Constant-Current
Mode, 4-5
Calibration and Verification
Isolated Analog Constant-Voltage
Mode, 4-6
Calibration and Verification
Potentiometer Locations, 4-8
Constant-Current Mode, 3-11
Calibration and Verification, 4-3
Operation, 3-11
Constant-Power Mode, 3-33
Constant-Voltage Mode, 3-10
Calibration and Verification, 4-3
Operation, 3-10
Contents of Shipment, 2-1
Controls and Indicators, 3-1
M550221-01 Rev U
Analog Control (J1), 3-39
Front Panel ON/OFF Switch, 3-2
D
Default Programming, 3-9
Display Brightness, 3-34
Display Elements, 3-14
E
Editing, 3-16
Aborting an Edit, 3-17
Electrical Characteristics, 1-3
Environmental Characteristics, 1-3
F
Flexible Cables, 2-7
Floating Negative Terminal, 2-4
Front Panel, 3-1
Front Panel Drawing, 3-1
Fuses, 5-3
H
Home Timeout, 3-34
I
Initial Start-Up, 3-9
Input Overcurrent Protection, 2-4
Circuit Breaker/Fuse Rating, 2-4
Input/Output Connections, 2-4
Connectors, 2-5
Input Overcurrent Protection, 2-4
Input Terminal Connections, 2-6
Lugs, 2-6
Index-1
Index
Sorensen SGI Series
Maximum AC Current Ratings, 2-5
Output Terminal Connections, 2-6
Safety Disconnect Device, 2-4
Safety Ground Wire, 2-4
Sense Connector Tools, 2-6
Inspection, 2-1
Installation Drawings, 2-11
L
Language, 3-34
Live Update, 3-16
Loads, 2-10
Inductive, 2-10
Store-Energy, 2-10
Location, 2-2
Protected Environment, 2-2
Ventilation, 2-2
Lock Key, 3-34
M
Maintenance, 5-1
Cleaning/Inspection, 5-2
Fuses, 5-3
Preventive, 5-1
Maximum AC Current Ratings, 2-5
Menu, 3-18
Constant-Power Setup, 3-21
Default Programming, 3-18
Home, 3-18
Remote, 3-21
Sequence, 3-20
Menu Map, 3-18
Model Number Decoding, 1-2
Mounting, 2-2
6U Rack Removal, 2-3
Rack Mounting, 2-3
Mounting Hardware, 2-3
N
Navigation, 3-15
P
Parallel Operation, 3-54
Master/Slave Connection, 3-54
Physical Characteristics, 1-8
Polarized Output, 3-53
Programming Summing, 3-40
Programming/Operating Functions, 3-22
Constant-Power Mode, 3-33
Display Brightness, 3-34
Home Timeout, 3-34
Language, 3-34
Lock Key, 3-34
Programming Current, 3-23
Programming Overvoltage Protection,
3-23
Programming Voltage, 3-22
Recall, 3-24
Remote Mode, 3-35
Save V/I/OVP Settings, 3-23
Saving a Configuration, 3-24
Saving to Power ON, 3-24
Sequencing, 3-25
Supply Info, 3-35
Total System Current, 3-38
Warning Screens, 3-39
R
O
Operation, 3-1
Constant-Current Mode, 3-11
Constant-Voltage Mode, 3-10
Initial Setup, 3-9
Parallel, 3-54
Power-Up State, 3-9
Programming Summing, 3-40
Index-2
Remote Current Programming, 3-43
Remote Output On/Off Control, 3-48
Remote Overvoltage Protection
Programming, 3-47
Remote OVP Reset, 3-47
Remote Sensing, 3-50
Remote Shutdown, 3-49
Remote Voltage Programming, 3-45
Series, 3-56
Outline Drawings, 2-11
Output Isolation, 1-6
Negative Output Terminal, 1-6
Output Float Voltage, 1-6
Overvoltage Protection, 3-12
Rear Panel Drawings, 2-11
Remote Current Programming, 3-43
Resistance Control, 3-43
Voltage Source Control, 3-44
Remote Isolated Analog Interface Control,
3-40
Remote Mode, 3-35
Remote Output On/Off Control, 3-48
M550221-01 Rev U
Sorensen SGI Series
Maintenance
Contact Closure Control, 3-48
External Source Control, 3-48
Shutdown (S/D), 3-49
Remote Overvoltage Protection
Programming, 3-47
Remote Sensing, 1-5, 3-50
Error with Disconnected Sense, 3-50
Remote Shutdown, 3-49
Remote Voltage Programming, 3-45
Resistance Control, 3-45
Voltage Source Control, 3-46
Ripple/Noise, 1-7
S
Safety Disconnect Device, 2-4
Safety Ground Wire, 2-4
Screens, 3-22
Other Screens, 3-22
Remote Control, 3-22
Warning, 3-22, 3-39
Sequencing, 3-25
Examples, 3-30
Operation, 3-25
Step Operations, 3-27
Step Restrictions, 3-25
M550221-01 Rev U
Series Operation, 3-56
Specifications, 1-3
Electrical Characteristics, 1-3
Environmental Characteristics, 1-3
Parallel Operation, 1-6
Physical Characteristics, 1-8
Rated Current, 1-7
Rated Output Power, 1-4
Rated Voltage, 1-7
Remote Analog Interface, 1-5
Remote Isolation, 1-6
Remote Sensing, 1-5
Ripple/Noise, 1-7
Series Operation, 1-6
T
Total System Current, 3-38
W
Wire Selection, 2-7
Current Ratings, 2-7
Flexible Cable, 2-7
Voltage Drop, 2-10
Wire Size, 2-7
Index-3
Index
Sorensen SGI Series
This page intentionally left blank.
Index-4
M550221-01 Rev U
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