ITech IT8511+, IT8511A+, IT8512+, IT8512C+, IT8514B+ User Manual

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ITech IT8511+, IT8511A+, IT8512+, IT8512C+, IT8514B+ User Manual | Manualzz

DC Programmable Electronic

Loads

Series IT8500plus User’s Manual

Model:IT8511+/ IT8511A+/IT8511B+/IT8512+/IT8512A

+/IT8512B+/IT8512C+/IT8512H+/IT8513A+/IT8513C

+ /IT8514C+/IT8514B+/IT8516C+

Version:2.0

Notices

© Itech Electronic, Co., Ltd. 2015

No part of this manual may be reproduced in any form or by any means

(including electronic storage and retrieval or translation into a foreign language) without prior permission and written consent from Itech Electronic,

Co., Ltd. as governed by international copyright laws.

Manual Part Number

IT8500+-402008

Revision

Second Edition: May 09,

2017

Itech Electronic, Co., Ltd.

Trademarks

Pentium is U.S. registered trademarks of Intel Corporation.

Microsoft, Visual Studio, Windows and

MS Windows are registered trademarks of Microsoft Corporation in the United

States and/or other countries and regions.

Warranty

The materials contained in this document are provided “as is”, and is subject to change, without prior notice, in future editions. Further, to the maximum extent permitted by applicable laws, ITECH disclaims all warrants, either express or implied, with regard to this manual and any information contained herein, including but not limited to the implied warranties of merchantability and fitness for a particular purpose. ITECH shall not be held liable for errors or for incidental or indirect damages in connection with the furnishing, use or application of this document or of any information contained herein.

Should ITECH and the user enter into a separate written agreement with warranty terms covering the materials in this document that conflict with these terms, the warranty terms in the separate agreement shall prevail.

Technology Licenses

The hardware and/or software described herein are furnished under a license and may be used or copied only in accordance with the terms of such license.

Restricted Rights Legend

Restricted permissions of the U.S. government. Permissions for software and technical data which are authorized to the U.S. Government only include those for custom provision to end users.

ITECH follows FAR 12.211 (technical data), 12.212 (computer software).

DFARS 252.227-7015 (technical data--commercial products) for national defense and DFARS 227.7202-3

(permissions for commercial computer software or computer software documents) while providing the customized business licenses of software and technical data.

Safety Notices

A CAUTION sign denotes a hazard. It calls attention to an operating procedure or practice that, if not correctly performed or adhered to, could result in damage to the product or loss of important data. Do not proceed beyond a CAUTION sign until the indicated conditions are fully understood and met.

A WARNING sign denotes a hazard. It calls attention to an operating procedure or practice that, if not correctly performed or adhered to, could result in personal injury or death. Do not proceed beyond a WARNING sign until the indicated conditions are fully understood and met.

NOTE

A NOTE sign denotes important hint. It calls attention to tips or supplementary information that is essential for users to refer to.

IT8500+ User’s Manual

Quality Certification and Assurance

We certify that series IT8500+ electronic load meets all the published specifications at time of shipment from the factory.

Warranty

ITECH warrants that the product will be free from defects in material and workmanship under normal use for a period of one (1) year from the date of delivery (except those described in the Limitation of Warranty below).

For warranty service or repair, the product must be returned to a service center designated by ITECH.

 The product returned to ITECH for warranty service must be shipped

PREPAID. And ITECH will pay for return of the product to customer.

 If the product is returned to ITECH for warranty service from overseas, all the freights, duties and other taxes shall be on the account of customer.

Limitation of Warranty

This Warranty will be rendered invalid in case of the following:

 Damage caused by circuit installed by customer or using customer own products or accessories;

 Modified or repaired by customer without authorization;

 Damage caused by circuit installed by customer or not operating our products under designated environment;

 The product model or serial number is altered, deleted, removed or made illegible by customer;

 Damaged as a result of accidents, including but not limited to lightning, moisture, fire, improper use or negligence.

Safety Symbols

Direct current

Alternating current

Both direct and alternating current

Protective conductor terminal

Earth (ground) terminal

Caution, risk of electric shock

Warning, risk of danger (refer to this manual for specific

Warning information) or Caution

Frame or chassis terminal

Copyright © Itech Electronics Co., Ltd.

-

ON (power on)

OFF (power off)

Power-on state

Power-off state

Reference terminal

Positive terminal

Negative terminal

- i

IT8500+ User’s Manual

Safety Precautions

The following safety precautions must be observed during all phases of operation of this instrument. Failure to comply with these precautions or specific warnings elsewhere in this manual will constitute a default under safety standards of design, manufacture and intended use of the instrument. ITECH assumes no liability for the customer’s failure to comply with these precautions.

 Series IT8500+ electronic load supports 110V/220VAC input and need to switch the input voltage before operation.

 Do not use the instrument if it is damaged. Before operation, check the casing to see whether it cracks. Do not operate the instrument in the presence of inflammable gasses, vapors or dusts.

 The electronic load is provided with a three-core power line during delivery and should be connected to a three-core junction box. Before operation, be sure that the instrument is well grounded.

 Make sure to use the power cord supplied by ITECH.

 Check all marks on the instrument before connecting the instrument to power supply.

 Use electric wires of appropriate load. All loading wires should be capable of bearing maximum short-circuit current of electronic load without overheating. If there are multiple electronic loads, each pair of the power cord must be capable of bearing the full-loaded rated short-circuit output current

 Ensure the voltage fluctuation of mains supply is less than 10% of the working voltage range in order to reduce risks of fire and electric shock.

 Do not install alternative parts on the instrument or perform any unauthorized modification.

 Do not use the instrument if the detachable cover is removed or loosen.

 To prevent the possibility of accidental injuries, be sure to use the power adapter supplied by the manufacturer only.

 Never use the instrument with a life-support system or any other equipment subject to safety requirements.

 Failure to use the instrument as directed by the manufacturer may render its protective features void.

 Always clean the casing with a dry cloth. Do not clean the internals.

 Make sure the vent hole is always unblocked.

Copyright © Itech Electronics Co., Ltd. ii

IT8500+ User’s Manual

Environmental Conditions

The instrument is designed for indoor use and an area with low condensation.

The table below shows the general environmental requirements for the instrument. The speed of fan will change intelligently by the temperature of radiator. When the temperature is up to 40°C, the fan will be on and adjust intelligently when temperature changes.

Environmental Conditions

Operating temperature

Operating humidity

Storage temperature

Altitude

Pollution degree

Installation category

Requirements

0°C to 40°C

20%-80% (non-condensation)

-20°C to 70 °C

Operating up to 2,000 meters

Pollution degree 2

II

Note

To make accurate measurements, allow the instrument to warm up for 30 min before operation.

Regulatory Markings

The CE mark indicates that the product complies with all the relevant European legal directives. The specific year (if any) affixed refers to the year when the design was approved.

The instrument complies with the WEEE

Directive (2002/96/EC) marking requirement. This affixed product label indicates that you must not discard the electrical/electronic product in domestic household waste.

This symbol indicates the time period during which no hazardous or toxic substances are expected to leak or deteriorate during normal use. The expected service life of the product is 10 years. The product can be used safely during the 10-year Environment Friendly

Use Period (EFUP). Upon expiration of the EFUP, the product must be immediately recycled.

Waste Electrical and Electronic Equiment (WEEE)

Directive

2002/96/EC Waste Electrical and Electronic Equipment

(WEEE) Directive

This product complies with the WEEE Directive (2002/96/EC) marking requirement. This affix product label indicates that you must not discard the electrical/electronic product in domestic household waste.

Product Category

Copyright © Itech Electronics Co., Ltd. iii

IT8500+ User’s Manual

With reference to the equipment classifications described in the

Annex I of the WEEE Directive, this instrument is classified as a

“Monitoring and Control Instrument”.

To return this unwanted instrument, contact your nearest

ITECH office.

Copyright © Itech Electronics Co., Ltd. iv

IT8500+ User’s Manual

Compliance Information

Complies with the essential requirements of the following applicable European

Directives, and carries the CE marking accordingly:

 Electromagnetic Compatibility (EMC) Directive 2014/30/EU

 Low-Voltage Directive (Safety) 2014/35/EU

Conforms with the following product standards:

EMC Standard

IEC 61326-1:2012/ EN 61326-1:2013 ¹²³

Reference Standards

CISPR 11:2009+A1:2010/ EN 55011:2009+A1:2010 (Group 1, Class A)

IEC 61000-4-2:2008/ EN 61000-4-2:2009

IEC 61000-4-3:2006+A1:2007+A2:2010/ EN 61000-4-3:2006+A1:2008+A2:2010

IEC 61000-4-4:2004+A1:2010/ EN 61000-4-4:2004+A1:2010

IEC 61000-4-5:2005/ EN 61000-4-5:2006

IEC 61000-4-6:2008/ EN 61000-4-6:2009

IEC 61000-4-11:2004/ EN 61000-4-11:2004

1. The product is intended for use in non-residential/non-domestic environments. Use of the product in residential/domestic environments may cause electromagnetic interference.

2. Connection of the instrument to a test object may produce radiations beyond the specified limit.

3. Use high-performance shielded interface cable to ensure conformity with the EMC standards listed above.

Safety Standard

IEC 61010-1:2010/ EN 61010-1:2010

Copyright © Itech Electronics Co., Ltd. v

IT8500+ User’s Manual

Content

DC PROGRAMMABLE ELECTRONIC LOADS

................................................................................................ 1

Q UALITY C ERTIFICATION AND A SSURANCE ....................................................................................................................... 1

W ARRANTY .............................................................................................................................................................. 1

L IMITATION OF W ARRANTY .......................................................................................................................................... 1

S AFETY S YMBOLS ....................................................................................................................................................... 1

S AFETY P RECAUTIONS ................................................................................................................................................. 2

E NVIRONMENTAL C ONDITIONS ...................................................................................................................................... 3

R EGULATORY M ARKINGS ............................................................................................................................................. 3

W ASTE E LECTRICAL AND E LECTRONIC E QUIMENT (WEEE) D IRECTIVE .................................................................................... 3

C OMPLIANCE I NFORMATION ......................................................................................................................................... 5

CHAPTER1 INSPECTION AND INSTALLATION ...................................................................................................... 1

1.1

V ERIFYING THE S HIPMENT ...................................................................................................................................... 1

1.2

I NSTRUMENT S IZE I NTRODUCTION ............................................................................................................................ 1

1.3

A DJUSTMENT OF L OAD H ANDLE ............................................................................................................................... 3

1.4

D ISASSEMBLY OF L OAD H ANDLE ............................................................................................................................... 4

1.5

R ACK M OUNTING ................................................................................................................................................ 5

1.6

C ONNECTING THE P OWER C ORD .............................................................................................................................. 5

CHAPTER2 QUICK START .................................................................................................................................... 6

2.1

B RIEF I NTRODUCTION ............................................................................................................................................ 6

2.2

F RONT P ANNEL I NTRODUCTION ............................................................................................................................... 7

2.3

VFD D ISPLAY A NNUNCIATORS ................................................................................................................................. 8

2.4

F RONT P ANEL K EYS ............................................................................................................................................... 8

2.5

C OMBINATION K EYS .............................................................................................................................................. 9

2.6

R EAR P ANNEL I NTRODUCTION ............................................................................................................................... 10

2.7

P OWER ON S ELFTEST .......................................................................................................................................... 11

CHAPTER3 FUNCTIONS AND CHARACTERISTICS .............................................................................................. 14

3.1

L OCAL M ODE /R EMOTE M ODE .............................................................................................................................. 14

3.2

O PERATION M ODE ............................................................................................................................................. 14

3.2.1 Constant Current Mode (CC)

............................................................................................................ 14

3.2.2 Constant Voltage Mode (CV)

............................................................................................................. 15

3.2.3 Constant Resistance Mode (CR)

...................................................................................................... 15

3.2.4 Constant Power Mode (CW)

.............................................................................................................. 15

3.3

I NPUT O N /O FF C ONTROL .................................................................................................................................... 16

3.4

S HORT CIRCUIT A NALOG F UNCTION ....................................................................................................................... 16

3.5

S YSTEM M ENU (S YSTEM ) ..................................................................................................................................... 16

3.6

C ONFIG M ENU (C ONFIG ) ..................................................................................................................................... 17

3.7

T RIGGER F UNCTION ............................................................................................................................................ 19

3.8

T RANSIENT F UNCTION ......................................................................................................................................... 19

3.8.1 Continuous Mode

............................................................................................................................... 19

3.8.2 Pulse Mode

......................................................................................................................................... 19

3.8.3 Toggled Mode

..................................................................................................................................... 20

3.9

LIST O PERATION ................................................................................................................................................ 20

3.10

S AVING AND R ECALLING S ETTINGS ....................................................................................................................... 20

3.11

VON F UNCTION .............................................................................................................................................. 21

3.12

OCP O PERATION ............................................................................................................................................. 22

3.13

OPP O PERATION ............................................................................................................................................. 23

3.14

B ATTERY T EST .................................................................................................................................................. 24

3.15

CR-LED T EST F UNCTION ................................................................................................................................... 26

3.16

M EASUREMENT OF V OLTAGE R ISE T IME ................................................................................................................. 26

3.17

P ROTECTION F EATURES ...................................................................................................................................... 27

3.17.1 Over Voltage Protection (OVP)

....................................................................................................... 27

3.17.2 Over Current Protection (OCP)

....................................................................................................... 27

3.17.3 Over Power Protection (OPP)

......................................................................................................... 28

3.17.4 Over Temperature Protection (OTP)

.............................................................................................. 28

3.17.5 Reverse Voltage Protection (LRV)

.................................................................................................. 28

3.18

K EY L OCK F UNCTION ......................................................................................................................................... 28

Copyright © Itech Electronics Co., Ltd. vi

IT8500+ User’s Manual

3.19

T HE T ERMINALS ON THE R EAR P ANEL .................................................................................................................... 28

3.19.1 Remote Sensing

............................................................................................................................... 28

3.19.2 External Triggering

........................................................................................................................... 29

3.19.3 Current Monitoring (I Monitor)

......................................................................................................... 29

3.19.4Ripple Function

.................................................................................................................................. 30

CHAPTER4 BASIC OPERATION .......................................................................................................................... 31

4.1

C ONSTANT C URRENT O PERATION ........................................................................................................................... 31

4.2

C ONSTANT V OLTAGE O PERATION ........................................................................................................................... 31

4.3

C ONSTANT P OWER O PERATION ............................................................................................................................. 32

4.4

C ONSTANT R ESISTANCE O PERATION ........................................................................................................................ 32

4.5

T RANSIENT T EST O PERATION ................................................................................................................................ 32

4.5.1 Continuous Transient Operation

....................................................................................................... 33

4.5.2 Pulse Transient Operation

................................................................................................................. 34

4.5.3 Toggle Transient Operation

............................................................................................................... 34

4.6

L IST O PERATION ................................................................................................................................................. 35

4.7

T EST F ILES ........................................................................................................................................................ 37

CHAPTER5 COMMUNICATION INTERFACES...................................................................................................... 42

5.1C

OMMUNICATION M ODULES I NTRUDUCTION ............................................................................................................ 42

5.2

C OMMUNICATION WITH PC .................................................................................................................................. 43

5.3USB

I NTERFACE .................................................................................................................................................. 45

CHAPTER6 SPECIFICATIONS.............................................................................................................................. 46

S PECIFICATIONS ....................................................................................................................................................... 46

S UPPLEMENTARY C HARACTERISTICS .............................................................................................................................. 54

APPENDIX ............................................................................................................................................................... 55

S PECIFICATIONS OF R ED AND B LACK T EST L INES .............................................................................................................. 55

Copyright © Itech Electronics Co., Ltd. vii

Inspection and Installation

Chapter1 Inspection and Installation

1.1 Verifying the Shipment

Unpack the box and check the contents before operating the instrument. If wrong items have been delivered, if items are missing, or if there is a defect with the appearance of the items, contact the dealer from which you purchased the instrument immediately. The package contents include:

Checklist of Package Contents

Item Qty. Model

Electronic Loads x1

Power cord

CD

Ex-factory Test

Report x1 x1 x1

IT8500+ series

IT-E171/IT-E172

/IT-E173/IT-E17

4

-

-

Remarks

The IT8500+ series include:

IT8511+/IT8511A+/IT8511B+/IT85

12+/IT8512A+/IT8512B+/IT8512C

+/IT8512H+/IT8513A+/IT8513C+/I

T8514C+/IT8514B+/IT8516C+

User may select an appropriate power cord that matches the specifications of power socket used in the area. See the

Section Connecting the Power

Cord for details.

It contains IT8500+ electronic load

User’s Manual, Programming

Guide and other user documentations.

It is the test report of the instrument before delivery.

NOTE

Upon verification of the shipment, keep the package and relevant contents thereof in a safe place. When returning the instrument for warranty service or repair, the specified packing requirements shall be met.

1.2 Instrument Size Introduction

The instrument should be installed at well-ventilated and rational-sized space.

Please select appropriate space for installation based on the electronic load size.

IT8500+ series electronic load different models are not the same size, the detail size of the electronic load are shown as below.

Copyright © Itech Electronics Co., Ltd. 1

Inspection and Installation

IT8511+/IT8511A+/IT8511B+/IT8512+/IT8512B+/IT8512C+/IT8512H+ Model

Dimension:

Width: 214.5mm

Height: 88.2mm

Depth: 354.6mm

Detialed Dimension Drawing

IT8513A+/IT8513C+ Model

Dimension:

Width: 214.5mm

Height: 88.2mm

Depth: 453.5mm

Detailed Demension Drawing

Copyright © Itech Electronics Co., Ltd. 2

IT8514B+/ IT8514C+ Model

Dimension:

Width: 436.5.5mm

Height: 88.2mm

Depth: 463.5mm

Detialed Dimension Drawing

Inspection and Installation

IT8516C+ Model

Dimension:

Width: 482.5mm

Height: 174.5mm

Depth: 531.5mm

Detailed Dimension Drawing

1.3 Adjustment of Load Handle

IT8511+/IT8511A+/IT8511B+/IT8512+/IT8512A+/IT8512B+/IT8512C+/IT8512H

/IT8513A+/IT8513C+ series loads are equipped with a handle for user to easily carry and place it.

Copyright © Itech Electronics Co., Ltd. 3

Inspection and Installation

The load handle may be adjusted based on three methods (as shown in icons below). Be sure that appropriate force is applied to adjust the load handle to appropriate position.

1.4 Disassembly of Load Handle

Please disassemble the load handle before installing equipment on the support.

Disassembly steps:

1. Adjust the handle to the position as shown in the figure below.

NOTE

To easily disassemble handle, align the locking mouth and locking device, which is between the handle and the instrument.

2. Align the locking mouth, and pull out the handle towards two sides.

NOTE

Do not use too much force and mind your hands during disassembly of load handle.

Copyright © Itech Electronics Co., Ltd. 4

Inspection and Installation

1.5 Rack Mounting

IT8511+/IT8511A+/IT8511B+/IT8512+/IT8512A+/IT8512B+/IT8512C+/IT8512H

+/IT8513A+/IT8513C+ loads can be installed on standard 19-inch rack.

ITECH provides user with IT-E151/IT-E151A rack, as an optional mount kit. The detailed operation please refer to the User Manual of your mount kit.

IT8514B+/IT8514C+/IT8516C+ need not mount on rack, they can installed on cabinet directly by screw.

1.6 Connecting the Power Cord

Connect the power cord after checking that the power switch of the instrument is turned OFF. Only use the power cord supplied as a standard accessory.

Select from the following Schedule of Power Cord Specifications an appropriate power cord that matches the voltage for the area in which you use the instrument. If the power cord included in the instrument you purchased does not match the voltage, contact the dealer or manufacturer for change.

E

N

E

L N

E

L

China

IT-E171

E

L N

United States &

Canada

IT-E172

Europe

IT-E173

L N

England

IT-E174

Copyright © Itech Electronics Co., Ltd. 5

Quick Start

Chapter2 Quick Start

This chapter introduces the front panel, the rear panel, key functions and VFD display function of the electronic load, make sure that you can quickly know the appearance, instruction and the key function before you operate the load, Help you make better use of this series of electronic load.

2.1 Brief Introduction

IT8500plus series DC electronic loads are single channel programmable electronic load which can provide multiple solutions according to the requirements of your design and test. This series have international advanced functions and features.

 High-visibility vacuum fluorescent display (VFD)

 Measurement resolution: 0.1mV,0.1mA

 Voltage and current Measurement speed: up to 40KHZ

 Four operation modes:CV(Constant Voltage),CC,CR,CW

 Battery test function

 OCP test , OVP test

 Auto test function:

 Short circuit function

 Remote Sense function

 Memory capacity to save/recall setting parameters: 100 registers

 Intelligent fans

 Build-in Buzzer as alarm signal

 Power off memory function

 Rotary knob, making the operation more convenient

 Measure test function,test the rising/dropping time of the voltage

 List modes

Model

IT8511+

IT8511A+

IT8511B+

IT8512+

IT8512A+

IT8512B+

IT8512C+

IT8512H+

IT8513A+

IT8513C+

IT8514B+

IT8514C+

IT8516C+

Voltage

120V

150V

500V

120V

150V

500V

120V

800V

150V

120V

500V

120V

120V

Current Power

30A

30A

10A

30A

30A

15A

60A

5A

60A

120A

60A

240A

240A

150W

150W

150W

300W

300W

300W

300W

300W

400W

600W

1500W

1500W

3000W

Communication

Interface

DB9(TTL)

DB9(TTL)

DB9(TTL)

DB9(TTL)

DB9(TTL)

DB9(TTL)

DB9(TTL)

DB9(TTL)

DB9(TTL)

DB9(TTL)

USB/RS232 standard USB/RS232

Standard USB/RS232

Copyright © Itech Electronics Co., Ltd. 6

Quick Start

2.2 Front Pannel Introduction

IT8500+ series electronic load different models have different front pannels, the front panels and keyboards of different models are shown as below.

IT8511+/IT8511A+/IT8511B+/IT8512+/IT8512A+/IT8512B+/IT8512C+/IT8512H+/IT8513A+/IT

8513C+ Model

① Power switch

② vacuum fluorescent display (VFD)

③ Compound key and the local switch key

④ Number key:

Set the parameters value, achieve the menu’s function by key combination

⑤ Function key:

Set the operation mode

Control the input state: On/Off

⑥ Direction function

⑦ Rotary knob

⑧ Input terminal

IT8514B+/IT8514C+ Model

① Power switch

② vacuum fluorescent display (VFD)

③ Compound key and the local switch key

④ Number key:

Set the parameters value, achieve the menu’s function by key combination

⑤ Function key:

Set the operation mode

Control the input state: On/Off

⑥ Direction function

⑦ Rotary knob

⑧ Input terminal

Copyright © Itech Electronics Co., Ltd. 7

IT8516C + Model

Quick Start

① Power switch

② vacuum fluorescent display (VFD)

③ Com pound key and the local switch key

④ Num ber key:

Set the parameters value, achieve the menu’s function by key combination

⑤ Function key:

Set the operation mode

Control the input state: On/Off

⑥ Direction function

⑦ Rotary knob

⑧ Input terminal

2.3 VFD Display Annunciators

OFF The load is off.

Error An error has occurred.

CC

CV

Constant mode

Constant mode current voltage

Trig Waiting for the trigger signal

Sense Remote sensing is on.

CR Constant resistance mode

Prot

CW Constant power mode Auto

OCP function is on.

Voltage range automatically seleted function is open

Lock The keyboard is locked. Rmt Instrument is in the remote state.

Timer LOAN ON is on. Shift Shift button pressed. has been

2.4 Front Panel Keys

( Blue-green)

Shift button is a composite key.

Copyright © Itech Electronics Co., Ltd. 8

(Gray)

(Gray-white)

0

~

9

ESC

Quick Start

Local button is used to switch local and remote mode.

Power on button

Enter the digits 0 to 9.

Decimal point

The escape key

Choose constant current mode.

Choose constant voltage mode.

Choose constant resistance mode.

Choose constant power mode.

Enter the selected value or setting.

Turns DC Load ON or OFF (OFF is high impedance state).

Scroll up key

Scroll down key

Scroll left and right key

2.5 Combination Keys

Press [ Shift ] button first and then other keys to achieve all kinds functions in the following table.

[ Shift ]

+ [ 1 ] (Short)

[ Shift ]

+ [ 2 ] (Tran)

[ Shift ]

+ [ 3 ] (List)

[ Shift ]

+ [ 4 ] (Save)

Turn short circuit on or off.

Start or stop transient condition.

Set LIST operation parameters.

Store the DC Load state in non-volatile memory.

[ Shift ]

+ [ 5 ] (Battery)

[ Shift ]

+ [ 6 ] (Prog)

[ Shift ] + [ 7 ] (Info)

[ Shift ] + [ 8 ] (System)

[ Shift ]

+ [ 9 ] (Config)

[ Shift ]

+ [ 0 ] (Pause)

Turn on or off battery testing function.

Enter auto test function.

Display product’s Model/SN/Version.

System menu setting

Configure menu setting

Press this button if you need a pause when runing an auto test file.

[ Shift ] + [ ] (Trigger)

[ Shift ] + [ CC ] (OCP)

Cause an immediate trigger.

Enter OCP test function.

[ Shift ] + [ CV ] (Setup) Set detailed parameters in

CC/CV/CW/CRmode.

[ Shift ]

+ [ CW ] (OPP) Enter OPP test function.

[ Shift ]

+ [ Enter ] (Recall) Recall the DC Load state from non-volatile memory.

[ Shift ] + [ On/Off ] (Lock) Key lock function

Copyright © Itech Electronics Co., Ltd. 9

Quick Start

2.6 Rear Pannel Introduction

IT8500+ series electronic load different models have different rear pannels, the rear panels and keyboards of different models are shown as below.

IT8511+/IT8511A+/ IT8511B+/ IT8512+/ IT8512B+/IT8512C+/IT8512H/IT8513A+/IT8513C+ Model

① Thermal window

② Line voltage selection switch( 110V/220V )

③ 3 pin IEC320 AC input connector

IT8514B+/IT8514C+Model

④ Current monitoring Terminal

⑤ 9-Pin serial port interface connector

⑥ 4 pin trigger and remote sensing connector

① Thermal window

② Line voltage selection switch( 110V/220V )

③ 3 pin IEC320 AC input connector

④ Current monitoring Terminal

⑤ RS232 communication cable interface

⑥ 4 pin trigger and remote sensing connector

⑦ USB communication cable interface

Copyright © Itech Electronics Co., Ltd. 10

IT8516C+Model

Quick Start

① Thermal window

② Line voltage selection switch( 110V/220V )

③ 3 pin IEC320 AC input connector

④ Current monitoring Terminal

⑤ RS232 communication cable interface

⑥ 4 pin trigger and remote sensing connector

⑦ USB communication cable interface

2.7 Power-on Selftest

A successful test process indicates that the instrucment meets the factory specifications and can be operated well.

Before operation, please confirm that you have fully understood the safety instructions.

 To avoid burning out, be sure to confirm that power voltage matches with supply voltage.

 Be sure to connect the main power socket to the power outlet of protective grounding. Do not use terminal board without protective grounding. Before operation, be sure that the power supply is well grounded.

 To avoid burning out, pay attention to marks of positive and negative polarities before wiring.

Selftest steps

Normal selftest procedures:

1. Correctly connect the power cord. Press [ Power ] key to start up.

2. After selftest, VFD display

information below.

0.0000V 0.0000A

0.00W CC=0.000A

OFF CC Auto

Information description:

 The first line display actual voltage and current value.

 The second line display the actual power value and the setting current/voltage/power/resistance value

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Quick Start

 The third line display the input state/operation mode.

3. Press [ Shift ] + [ 7 ] , VFD display products information. You can press direction buttons to examine product’s model/SN/software version.

Error Information References

The following error information may occur when an error occurs during Power

On self-test:

 If the EEPROM was damaged, the VFD will display “Eeprom Fail”.

 If the lastest operation data in EEPROM is lost, then VFD will display

“Config Data Lost”.

 If the calibration data in EEPROM is lost, then VFD will display “Cal data lost”.

 If the system setting data in EEPROM is lost, the VFD will display “Eeprom data lost”.Please press [ Shift ] + [ 4 ] and [ 0 ] to save after setting parameters.

Exception handling

If the electronic load cannot start normally, please check and take measures by reference to steps below.

1. Check whether the power line is correctly connected and confirm whether the electronic load is powered.

Correct wiring of power line => 2

Incorrect wiring of power line => Re-connect the power line and check whether the exception is removed.

2. Check whether the power in On.

[ Power ] key is under “ ” On status.

Yes => 3

No => Please check the [ Power ] key to start power and check whether the exception is removed.

3. Check whether set power voltage of electronic load is larger than the power supply voltage. If set power voltage is 220 V and the supply voltage is 110V, the electronic load cannot start.

4. Check whether the fuse of electronic fuse is burned out.

If yes, change fuse. Detailed steps:

 Pull out power line and take out the fuse box at power line jack with a small screw driver. As shown below.

 If the fuse is fused, please change fuse of same specification based on machine model. See the table blow for matching information of fuse and machine model.

Model

Fuse specification

(220VAC)

Fuse specification

(110VAC)

IT8511+ T0.5A 250V T1.25A 250V

IT8511A+

IT8511B+

T0.5A 250V

T0.5A 250V

T1.25A 250V

T1.25A 250V

Copyright © Itech Electronics Co., Ltd. 12

Model

IT8512A+

IT8512A+

IT8512B+

IT8512C+

IT8512H+

IT8513A+

IT8513C+

IT8514B+

IT8514C+

IT8516C+

Fuse specification

(220VAC)

T0.5A 250V

T0.5A 250V

T0.5A 250V

T0.5A 250V

T0.5A 250V

T1.25A 250V

T1.25A 250V

T1.25A 250V

T1.25A 250V

T2.5A 250V

Quick Start

Fuse specification

(110VAC)

T1.25A 250V

T1.25A 250V

T1.25A 250V

T1.25A 250V

T1.25A 250V

T2.5A 250V

T2.5A 250V

T2.5A 250V

T2.5A 250V

T5A 250V

 After replacement, install the fuse box back to original position, as shown below.

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Functions and Characteristics

Chapter3 Functions and Characteristics

This chapter elaborates on the functions and characteristics of electronic loads.Contents following sections:

 Switching of local/remote operation modes

 Constant-status operation mode

 Input On/Off function

 Keyboard locking function

 Short -circuit analog function

 System setup function

 Triggering function

 List mode

 Test function

 Save/Recall

 VON function

 Full protection function,OCP,OVP,OTP,OPP,Reverse voltage

 Remote Sense function

 Current monitoring function

 Ripple function

3.1 Local Mode/Remote Mode

There are two types of control modes for IT8500+ series products: Local mode and Remote mode.

In remote mode, you can operate the electronic loads through PC via communication cable(optional). While After power on electronic loads, it defaults in local mode and all buttons are avaiable in this mode.In remote control mode, the keys on the front pannel can not work except local key.Customers could through [ Local ] key to switch the control mode.

3.2 Operation Mode

There are four operation modes of IT8500+ series products:

 Constant current mode (CC)

 Constant voltage mode (CV)

 Constant resistance mode (CR)

 Constant power mode(CW)

3.2.1 Constant Current Mode (CC)

In constant current mode, the DC load will comsume a constant current, regardless of the voltage at its terminals.

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Functions and Characteristics

Load current

I

Setting current

Input voltage

CC mode

V

Diagram 3-1 I-V curve in CC mode

3.2.2 Constant Voltage Mode (CV)

In constant voltage mode, the DC load will cause a constant voltage to appear at its terminals.

V

Input voltage

Setting voltage

Input current

CV mode

Diagram 3-2 I-V curve in CV mode

I

3.2.3 Constant Resistance Mode (CR)

In constant resistance mode, the DC load will behave as a fixed resistance value.As shown below,the load linearly changes the current value with the rising of input voltage.

I

Load current

Slope is equal

To the setting resistance

Input voltage

CR mode

V

Diagram 3-3 I-V curve in CR mode

3.2.4 Constant Power Mode (CW)

In constant power mode,the DC load will cause a constant power to be dissipated in the load.As shown below,the load current is decreasing with the rising of input voltage,while power always maintain the setting value.

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Functions and Characteristics

Diagram 3-4 I-V curve in CP mode

3.3 Input On/Off Control

[ On/Off ] button on the front panel is used to manually toggle the instrument between its set mode and an infinite impedance state, i.e control input on and off.

[ On/Off ] button lighted indicates the load input is on, meanwhile the [ OFF ] indicator will disappear.

3.4 Short-circuit Analog Function

Short circuit simulation and short circuit current measurement:you may press

[ Shift ] + [ 1 ] botton to emulate a short state.It can be used to check whether the tested instrument’s short protection is avaiable.

In short mode,the DC load will draw maximum current from the DC supply in any of the four operation modes(CC,CV,CW or CR).In CC,CV,or CR mode,you may press [ Shift ] + [ 1 ] to stop short.The DC load will return to its previous operation.However,in CW mode,the short current will continue to be drawn.To stop the short,you must press the [On/Off] key after you press [ Shift ] + [ 1 ] .

When emulating a Short in CC, CW or CR mode, the maximum allowable short current is equal to the 110% of current range. Under CV mode, short circuit current is equivalent to that constant voltage value of load is 0 V.

3.5 System Menu (System)

Press [ Shift ] + [ 8 ] (system) to enter the system menu.

POWER-ON

POWER-ON

RST(default)

SAV0

Power on state of instrument

Do not remember state in SAVE 0.Customer can save a often used data in SAVE 0 to recall when power on the DC load next time.

Remember state in SAVE 0

BUZZER

KNOB

BUZZER

ON(default)

OFF

KNOB

Enable audible beep when key is pressed

No sound when key is pressed

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UPDATE(default)

Functions and Characteristics

The value modified with knob during operation will be saved after load is off.For example; the DC load is set to 1A by press [CC] and turned on the input.Then increase the setting value to 2A with knob.When customer turn off load and trun on again, the setting value changes to 2A.

OLD

SOURCE

MANUAL(Def)

EXTERNAL

TRIGGER

MEMORY

BUS

HOLD

MEMORY

GROUP= 0

DISP-TIMER

DISPLAY

RS-232

ON

OFF(default)

RS-232

4800_8N 1

9600_8N 1

19200_8N 1

38400_8N 1

SCPI

PROTOCOL

FRAME

ADDRESS ADDRESS= 0

RUN

RUNMODE

NORMAL

BATTERY

PROG_TEST

OCP_TEST

OPP_TEST

DEFAULT DEFAULT

NO

YES

As explained above, after the DC load is turned on again,the setting value is 1A instead of 2A changed with knob.

Set trigger mode

Triggered from the

[ Shift ]

+ [ ] key

Triggered from a TTL high signal at the trigger connector on rear panel

Triggered from a serial bus command 5AH

Receving a command 9DH

Recall the prestored datas

0: indicates1-10 group; 1 :indicates 11-20group, by parity of reasoning

Timer function

Enable timer function

Disable timer function

Baudrate 4800, data bit 8, none parity, stop bit 1

Baudrate 9600, data bit 8, none parity, stop bit 1

Baudrate 19200, data bit 8, none parity, stop bit 1

Baudrate 38400, data bit 8, none parity, stop bit 1

Select SCPI protocol

Select FRAME protocol

Set the instrument’s address(0~31)

Runing mode at power on

Normal mode

Default in battery test mode at power on

Default in autotest mode at power on

Default in OCP test mode at power on

Default in OPP test mode at power on

Do not return instrument to factory default settings.

Retrun instrument to factory default settings

3.6 Config Menu (Config)

Press [ Shift ]+ [ 9 ] (Config) to enter the menus.

Max-P Set hardware power protection

PROTECT

MAX POWER=150.00W Set hardware OPP value

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MEASURE

A-LIMIT

A-LIMIT

ON

A-LIM POIN=30.000A

A-LIM DELAY=3S

OFF

P- LIMIT

P-LIM POIN=150.00W

P-LIM DELAY=3S

TIMER

LOAD-TIMER

ON

LOAD-TIMER=10.0S

OFF

V-RANGE

V-RANGE

ON

OFF

FILTER

FILTER COUNT = 2^14

TIME-V1

TIME-VOLT1=0.000V

TIME-V2

TIME-VOLT2=120.00V

CR-LED

CR-LED

SENSE

VON

RESET

ON

OFF

REM- SENSE

ON

OFF

VON

LIVING

VON POINT = 0.10V

LATCH

VON POINT = 0.10V

RESET

NO

YES

Copyright © Itech Electronics Co., Ltd.

Functions and Characteristics

Set software current protecting state

Enable software over current protection function

Set the software OCP level

Set the OCP delay time

Disable the software OCP funtion

Set software power protecting state.

Set the software OPP level.

Set the OPP delay time.

Set load on timer

Enable load-on timer

Set the load on time(0.1S~9999.9S)

Disable load on timer

Voltage auto-rangefuntion

Enable voltage auto range function

Disable voltage auto range function

Set the filter parameter

Filter count set, range 2~16

Set the start time, to measure the voltage rise/fall time.

Set the end time, to measure the voltage rise/fall time

Imitate LED (in CR mode)

Open the function(in CR mode,press

[ Shift ]+ [ CV ]

to set Vd value)

Disenable the function

Remote sense function

Enable remote sense function

Disable remote sense function

Set the load’s VON point

VON point living state

Set the VON value

VON point latch state, ON /OFF

Set the VON value

Reset the config menu

Do not reset

Reset

18

Functions and Characteristics

3.7 Trigger Function

Triggering is used with the transient operation; list operation and test function.There are four types of triggers you can use for IT8500+ products.

Manual: An immediate trigger is created by pressing [ Shift ]+ [ ] ( Trigger ) on the front panel.

External(TTL signal): An external trigger is a TTL low signal applied to the trigger connection on the rear panel.This TTl signal must last for more than

10us.

Bus: The instrument will be triggered if command 5AH is sent via the communication interface.

Hold: The instrument will be triggered if command 9DH is sent via the communication interface.

3.8 Transient Function

The transient test allows switching between two different load values.A common application is to test the dynamic characteristics of DC source.

There are three different types of transient operation: continuous, pulse, toggled.

3.8.1 Continuous Mode

In continuous transient operation, the load is continuously switched between two load values.An example is shown in the following figure:

3.8.2 Pulse Mode

In pulse operatrion,the load operates at the A value that has been entered until a trigger is received.At the trigger,the load switches to the B value and stays at that level for the B timing value.Then the load switches back to the A value and stays there until another trigger is received.

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Functions and Characteristics

3.8.3 Toggled Mode

In toggled transient operation,the load starts at the stored parameters for the mode.When a trigger is received,the load switches to B value.When another trigger is received,the load switches to the A level.It stays at the A value until another trigger is received,at which point it switches to the B value.Here’s an example:

10A

5A

TRG

TRG

Toggled Transient Operation

3.9 LIST Operation

List mode allows you to generate a complex current sequence. Moreover, the mode. change can be synchronized with an internal or external signal, to accomplish dynamic and precise test A list file includes following parameters: file name, step counts (range 2-84), time width of single step(0.00005s~3600s),step value and slope .The edited list file can be saved in nonvolatile memory, can be recalled easily.The DC load provides 7 nonvolatile registers to save list files for recall later.

In list mode,the DC load start to run the list file once receiving a trigger signal, continue to run once receiving another trigger signal.To illustrate the use of a list,we’ll create a list that runs the following constant current profile on a power supply:

Trigger

0 1 2 3 4 5

List count=1

List sequence

List count=2

3.10 Saving and Recalling Settings

We can save some often-used parameters in the non volatile memory, including working mode, voltage/current value and so on.IT8500plus series provide 100 non-volatile registers.

They are divided into 10 Memory groups: Group0-9.You can set it in the system menu.Group0 means you can save and recall parameters in 0-10 registers.

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Functions and Characteristics

Group1 means you can save and recall parameters in 11-20 registers.

Group2-Group9 can be concluded in the same manner.

Save and Recall operation

For example: the instrucment works in CC mode, setting value is 1A,

Memory Group is 6. Save “CC 1A” in the 61th register and then recall.

1. Set the parameters ok. To save the instrument's settings to a register, press [ Shift ]+ [4] (Save). Enter number [6] and [1].

2. Then press [Enter] , The setting is saved.

3. To recall the instrument's settings from a register, press [ Shift ]+ [Enter]

(Recall).

4. Enter [1] .Then the setting is recalled.

NOTE

Saving operation will overwrite any values previously saved in that register.

Recalling operation will light the Enter . You should press [ESC] to escape the recalling state before setting other parameters.

3.11 VON Function

The DC load can be set to only turn on if the voltage is above a set value(VON set) under configure menu by pressing [ Shift ]+ [9].

There are two types of

VON function: Living and Latch .The following will have detailed description for the two types.

NOTE

VON set is used to ensure an electronic system under test will not have power applied unless the supply voltage is above a certain value.If you have no such testing request, do not set this value arbitrarily.If your instrument can not work normally, for example, set CC=1A, after turn on the input while the current is still 0A instead of setting value 1A, then you should check VON set firstly.If VON set is not 0V, then please modify to 0V.

VON LIVING MODE

In Living mode, when power is applied to the DC load, the voltage must rise above VON setting before the load draws current from the source.If the voltge below VON setting on the load’s terminals, the load will turn off input.

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Functions and Characteristics

VON LATCH MODE

In Latch mode,as before,the load will turn on only when the voltage exceed

VON setting,but once on,it will now stay on,even if the voltage drops to zero.

3.12 OCP Operation

OCP test process : After input voltage reaches VON point,the DC load start to draw a current from the source after a delay time.The current value will increase by a certain step size at regular intervals.Simultaneously,the DC load will judge whether the input voltage is lower than OCP voltage you’ve set.If it is,then the present current value will be compared to see if it is in the current range you’ve set,in this range,the OCP test will Pass or fail.On the contrary,the

DC load will continue to increase drawing current and compare the voltage.

To start an OCP test,press [ Shift ]+ [ ] (Trigger ) .

Press [ Shift ]+ [ CC ] (OCP) to enter OCP operation.

OCP TEST

1.VON LEVEL=0.000V

2.VON DELAY=0.00S

EDIT

3.RANGE=3.000A

4.START=0.1000A

5.STEP=0.1000A

6.STEP DEL=0.20S

7.END=2.0000A

8.OCP VOLT=2.000V

9.MAX TRIP =1.5000A

10.MIN TRIP=0.9000A

SAVE OCP FILE=1

Set Voltage threshold

After delay certain time,the DC load starts to draw current.

Set current range

Set start current

Set step current

Set delay time of each step

Set end current

Set OVP value

Upper limit of OCP value

Lower limit of OCP value

Save OCP test file (1-10)

Set the power on mode to be OCP test mode:

Operation Display on front pannel

1.Press

[ Shift ]+ [ 8 ]

(system) enter into sysmtem menu

0.0000V 0.000A

POWER-ON BUZZER

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Functions and Characteristics

2.Press right key,select RUNMODE and confirm with [ Enter ] button

3.Press direction key to select OCP_TEST,Press

[ Enter ] to confirm.

0.0000V 0.000A

RUN <NORMAL

0.0000V 0.000A

RUN <OCP_TEST

4,Press [ Esc ] button to quit the set. 0.0000V 0.000A

STOP 0.000A

After above steps,press [ ] ( Trigger) button to run ocp test file.

Recall OCP File:

1. Press [ Shift ]+ [ Enter ] button to select programe file,the panel displays

“CALL OCP FILE= 1.Enter the file name(1-10),press [ Enter ] button to confirm.

2. According to the following steps to escape OCP mode:press [ Shift ]+ [ 8 ]

(system)------“RUNMODE”----[Enter] -------select

“NORMAL”mode---[ Enter ] .

3.13 OPP Operation

OPP test process :When the input voltage has reached VON point, power will begin to work after a delay time.The power value will increase by a step size at regular intervals.Simultaneously,the DC load will judge wether the input voltage is lower than OPP voltage(you need to set).If it is,then the present current value will be compared to see if it is in the current range you’ve set,in this range,the

OPP test will Pass or fail.On the contrary,the power will continue to increase within the cut-off current range.And then compare OPP voltage with input voltage too.

OPP TEST

To start a OPP test, press [ Shift ]+ [ ] (Trigger ) .

Press [ Shift ]+ [CW] (OPP) to enter OPP test operation.

RUN

CALL

EDIT

OPP TEST

STOP

OPP TEST

Recall OPP File=1

OPP TEST

1.VON LEVEL=0.000V

2.VON DELAY=0.01S

3.RANGE=5A

4.START =0.1W

5.STEP =1W

6.STEP DEL=1S

7.END =12W

8.OPP VOLT=7V

9.MAX TRIP =6.5W

10.MIN TRIP =5.6W

SAVE OPP FILE=1

Run OPP test file

Recall OPP test file(range file1-file10)

Set Voltage on value

Set Voltage on delay time

Set working current range

Set start power value

Set step power value

Set step delay time

Set cut-off power value

Set OPP value

Upper limit of OPP value

Lower limit of OPP value

Save OPP test file

Operation

Set the power on mode to be OPP test mode

Display on front pannel

1.Press

[ Shift ]+ [ 8 ]

(system) enter into sysmtem menu

0.0000V 0.000A

POWER-ON BUZZER

2.Press right key,select RUNMODE and confirm with [ Enter ] button

0.0000V 0.000A

RUN <NORMAL

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3.Press direction key to select

OCP_TEST,Press [ Enter ] to confirm.

0.0000V 0.000A

RUN <OPP_TEST

4,Press [ Esc ] button to quit the set. 0.0000V 0.000A

STOP 0.000A

Functions and Characteristics

After above steps,press [ ] ( Trigger) button to run OPP test file.

Recall OPP File

1. Press [ Shift ]+ [ Enter ] button to select programe file,the panel displays

“CALL OPP FILE= 1.Enter the file name(1-10),press [ Enter ] button to confirm.

2. According to the following steps to escape OPP mode:press [ Shift ]+ [8]

(system)------”RUNMODE”---[ Enter ] ------select“NORMAL”mode---[ Ente r ] .

3.14 Battery Test

IT8500plus series products test the battery capability in CC/CW/CR mode.

The test mode should be set first, and then the discharge stop conditions.

There are three discharge stop conditions to be set for IT8500 plus series products. When user only need to do battery testing in one or two stop conditions, the other conditions should be set to the specified value (STOP

VOLT:0V;STOP CAP:999.999AH;STOP TIMER:99999S). When the system checks the discharging time or battery voltage or capacity is equal to the setting stop value or under an insecurity state, the battery test will stop, and the E-Load will turn off. The battery voltage, discharge current, discharge time and discharged capability are displayed on the VFD while testing.

Take CC mode for example, the operations are as below:

( 1 )Voltage-threshold Cut Off

Step Operation

1

2

3

4

5

Press

[ Shift ]+ [ 5 ]

(Battery),set current range

Set discharge current,for example 2A

Set the stop voltage,for example 2V, then press

[ Enter ] to confirm.

Set the stop capability to maximum 999.999AH, press [ Enter ] to confirm.

Set the stop timer to maximum 99999S, press

[ Enter ] to confirm.

Save the battery test to specified file

Display

0.0000V 0.000A

RANGE = 0.00A

CURRENT = 2.000A

STOP VOLT=2V

STOP CAP=999.999AH

STOP TIMER=99999S

6

6 Press [ Enter ] to confirm

0.0000V 0.000A

SAVE BATT FILE 1(1-10)

0.0000V 0.000A

0.00W I = 2.00A

Off cc

(2)Capacity-threshold Cut Off

Step Operation

1

2

3

4

5

Press

[ Shift ]+ [ 5 ]

(Battery),set current range

Set discharge current,for example 2A

Display

0.0000V 0.000A

RANGE = 0.00A

CURRENT = 2.000A

Set the stop voltage to 0V, then press [ Enter ] to confirm.

STOP VOLT=0V

Set the stop capability, for example,7AH,then press [ Enter ] to confirm.

STOP CAP=7AH

Set the stop timer to maximum 99999S, press STOP TIMER=99999S

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Functions and Characteristics

6

7

[ Enter ] to confirm.

Save the battery test to specified file

Press [ Enter ] to confirm

0.0000V 0.000A

SAVE BATT FILE 1(1-10)

0.0000V 0.000A

0.00W I = 2.00A

Off cc

(3)Time-out Cut Off

Step Operation

1

2

3

4

5

Press

[ Shift ]+ [ 5 ]

(Battery),set current range

Set discharge current,for example 2A

Set the stop voltage to 0V, then press [ Enter ] to confirm.

Set the stop capability to maximum 999.999AH, press [ Enter ] to confirm.

Set the stop timer, for example, 3800S, press

[ Enter ] to confirm.

Save the battery test to specified file

Display

0.0000V 0.000A

RANGE = 0.00A

CURRENT = 2.000A

STOP VOLT=0V

STOP CAP=999.999AH

STOP TIMER=3800S

6

7 Press [ Enter ] to confirm

0.0000V 0.000A

SAVE BATT FILE 1(1-10)

0.0000V 0.000A

0.00W I = 2.00A

Off cc

(4) Any of the Three Conditions Cut Off

Step Operation

1

2

3

4

5

6

7

Press

[ Shift ]+ [ 5 ]

(Battery),set current range

Set discharge current,for example 2A

Set the stop voltage as needed,for example,2V,then press [ Enter ] to confirm.

Set the stop capbility as needed,for example,7AH,then press [ Enter ] to confirm.

Set the stop timer as needed,for example,3800S,then press [ Enter ] to confirm.

Save the battery test to specified file

Press [ Enter ] to confirm

Display

0.0000V 0.000A

RANGE = 0.00A

CURRENT = 2.000A

STOP VOLT=2V

STOP CAP=7AH

STOP TIMER=3800S

0.0000V 0.000A

SAVE BATT FILE 1(1-10)

0.0000V 0.000A

0.00W I = 2.00A

Off cc

(5)Go into Battery Test Mode

Operation Display on front pannel

1.Press

[ Shift ]+ [ 8 ]

(system) enter into sysmtem menu

0.0000V 0.000A

POWER-ON BUZZER

2.Press right key,select RUNMODE and confirm with [ Enter ] button

3.Press direction key to select

OCP_TEST,Press [ Enter ] to confirm.

0.0000V 0.000A

RUN <NORMAL

0.0000V 0.000A

RUN <BATTERY

4,Press [ ESC ] button to quit menu set 0.0000V 0.000A

0S 0.000AH

(6)Start Battery Test

Press [ ] (trigger) to provide a signal to start battery test.The discharing process will be auto terminated when stop conditions are reached.

(7)Recall Battery File

Press [ Shift ] + [ Enter ] button to select programe file,the panel displays

“RECALL BATTERY 1.Enter the file name(1-10),press [ Enter ] button to

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Functions and Characteristics confirm.

(8)Pannel Locked in case of Error Operations

Press [ Shift ]+ [ On/Off ] (Lock) button to lock the panel.In this mode,only [ Shift ] and [ On/Off ] button is enabled.

According to the following steps to escape OPP mode:

Press [Shift ]+ [ 8 ] (system)---”RUNMODE”--

[ Enter ] ---select “NORMAL” mode--[ Enter ]

3.15 CR-LED Test Function

With adding of diode break-over voltage setting in the IT8500+ series electronic load under conventional CR mode, the electronic load only works when voltage applied at its both ends is higher than the diode break-over voltage to give a real simulation of diode working principle, i.e., the ripple current at real

LED test.

Detailed steps of LED power test:

1. Start CR-LED Function

Press [Shift] + [9] keys to enter configuration menu. Press Right Key and select “CR-LED”. Press [Enter] key for entry. Select “on” and press [Enter] key. Press [ESC] key to exit.

2. Set CR Mode and Resistance Value

Press [CR] key and set corresponding constant resistance (as R calculated below).

3. Set Vd Value

Press [Shift] + [CV] keys for a series of related setting: range=7500.0, high=130V, low=0V, which may remain the original values. Vd will be set based on the calculation below.

Calculation method of Vd and R:

Vd=V*0.8 R=0.2V/I

Where:

 V: constant working voltage of load LED of LED constant current source;

 I: output current of LED constant current source;

 Vd: break-over voltage of diode (string);

 R: constant resistance;

3.16 Measurement of Voltage Rise Time

The IT8500+ series electronic load is provided with special voltage rise/drop time measurement function. This function gives a simple analog of voltage rise/drop speed of oscilloscope test power.

Operation methods:

Set initial Voltage and Final Voltage

1. Press [Shift] + [9] keys to enter configuration menu. Press Right key.

Select “Measure” and press [Enter] key.

2. Press [ ] to select “TimeV1”. Press [Enter] key. Press numeric keys to set initial voltage value and press [Enter] key.

3. Press [ ] to select “TimeV2”. Press [Enter] key. Press numeric keys to set final voltage value and press [Enter] key.

4. Press [ESC] to exit setting.

Start timer function

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Functions and Characteristics

5. Press [Shift] + [8] keys to enter system menu. Press Right key till “Displ” flicks and press [Enter] key.

6. Press [ key.

] key to select “On”. Start timer function and press

7. Press [ESC] to exit setting.

[Enter]

8. VFD second line will display time 0.0000S between power value and set value.

OFF CC

0.0001V 0.0002A

0.00W 0.0000S CC=0.000A

Measurement of Rise Time

9. Connect DC power to be tested to the input terminal of the electronic load.

The power is set with a value that is higher than the set final voltage value.

Keep power output in OFF status.

10. Set a constant current value on the load and open the load input.

11. Open power output.

12. The electronic load timer starts timing. After ending, time will keep stable, which is rise time of voltage.

13. Close the power output. The electronic load VFD will display voltage drop time.

3.17 Protection Features

DC load protection features include: OVP, OCP, OPP, OTP, reverse voltageprotection(LRV/RRV).

3.17.1 Over Voltage Protection (OVP)

If input voltage exceeds the voltage limit set by the user, the DC load will turn the input OFF and the buzzer will sound. The display will show OVP .

Operations to clear the OVP state

Disconnect the instrument under test. Press any key on the front panel, the

OVP on the VFD will disappear, then the DC load exits OVP protection state.

3.17.2 Over Current Protection (OCP)

The DC load includes both hardware and software over current protection features.

Hardware OCP : maximum input current of the DC load will be limited at about

110% of the current range, once the hardware OCP is activated, the status register’s OC bit will be set; when the hardware OCP is removed, the status register’s OC bit will be reset. Hardware over current protection won’t change the DC load’s On/Off state.

Software OCP : users can set the DC load’s software OCP value, steps:

[Shift] + [9] > Protect > Alimit set ON, Apoint set OCP current value, Adelay set delay time before alarm. When the software OCP function is actived, the DC load will automatically turn off, VFD displays OCP .

Operations to clear the OCP state

Disconnect the instrument under test. Press any key on the front panel, the

OCP displayed on the VFD will disappear, the DC load exits OCP protection state.

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Functions and Characteristics

3.17.3 Over Power Protection (OPP)

The DC load includes both hardware and software OPP features.

Hardware OPP: the DC load allows user to set a power protection limit in hardware which will limit the power in the range you set when the OPP occur.

The hardware OPP protection will not change the ON/OFF state of the the DC load.

Software OPP: users can set the DC load’s software OPP value, steps: [Shift]

+ [9] > Protect > P-LIMIT > P-LIM POIN set OPP power value, P-LIM DELAY set alarm delay. If the the DC load’s power value reach OPP limit and after the delay time, the DC load will automatically turned off, VFD will display OPP .

Operations to Clear the OPP State

Disconnect the instrument under test. Press any key on the front panel, the

OPP displayed on the VFD will disappear, the DC load exits OPP protection state.

3.17.4 Over Temperature Protection (OTP)

If internal temperature exceeds safety limits(85 ℃ ;185 °F), the Over temperature circuitry will be activated. The DC Load will turn off the input, the buzzer will sound, and the display will show OTP .

Operations to Clear the OTP State

When the DC load temperature drops to the protecting point, press any key on the front panel, the OTP) displayed on the front panel will disappear, the DC load exits OTP protection state.

3.17.5 Reverse Voltage Protection (LRV)

This feature protects the DC load in case the DC input terminals are connected to a power source with reversed polarity. If a reverse voltage condition is detected, the buzzer will sound and will be displayed on the VFD.

Operations to Clear the Reverse Voltage State

Check whether the connection is reversed; if so disconnect the power source.

3.18 Key Lock Function

Press [Shift] + [On/Off] (Lock)key to lock the front panel keys,VFD will display a Lock label.In this state,setting values can not be modified,woriking mode can not be changed.Press [Shift] + [On/Off] (Lock)again will disable this function.

3.19 The Terminals on the Rear Panel

3.19.1 Remote Sensing

Remote sensing is used to counteract the effect of lead resistance. For example, if you connect a power supply to the DC Load, the voltage at the power supply's terminals will not be the same as the voltage at the DC Load's terminals if there is a current flowing because of the finite resistance from the wires. Using remote sensing, you can sense the voltage at the power supply's terminals, effectively removing the effect of the voltage drop in the connection wire.

When using remote sensing, the power displayed by the instrument includes both the power dissipated inside the instrument and the power dissipated in the

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Functions and Characteristics leads from the power supply to the DC Load's input terminals.

 Steps to enable remote sensing in the menu:

1. Press [Shift] + [9] key into the menu

2. VFD displays > , press [Enter] key to confirm

3. Press [ ] to choose > , press [Enter] key to confirm

4. Press [ ] to choose > , press [Enter] key to confirm, then remote sense function has been set, and VFD display indicator.

Remote Sensing: SENSE (+) and SENSE (–) are the remote sensing inputs .

By eliminating the effect of the inevitable voltage drop in the DC load leads, remote sensing provides greater accuracy by allowing the DC load to regulate directly at the source's output terminals.

Wiring Diagram for Remote Sensing:

3.19.2 External Triggering

EXTERNAL :An external trigger is a TTL low signal applied to the Trigger connection on the back panel. This TTL signal must last for more than

5 ms. A trigger applied to this input can be used to change settings

(voltage, current , resistance), toggle between settings in transient- toggle mode, or generate a pulse in pulse mode.

Operation to select the trigger source as external:

[Shift] + [8] (system)to enter the menu,use [ ] t o select TRIGGER ,press

[Enter] ,and then select EXTERNAL .Press [ESC] to exit the menu.

3.19.3 Current Monitoring (I Monitor)

Current monitoring terminal will output 0-10V analog signal to corresponding to

0 to full range of input current. You can connect an external voltmeter or an oscilloscope to display the input current’s changing

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Functions and Characteristics

3.19.4Ripple Function

IT8500plus series DC electronic loads have test ripple function.You can read ripple voltage and ripple current by sending instructions.See in IT8500+ programming guide .

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Basic Operation

Chapter4 Basic Operation

4.1 Constant Current Operation

(Set the current from 0 to the current limit)

There are three ways to set the current value:

1. In CC mode, rotate Rotary knob.

2. In CC mode, input value through number keys directly , press [Enter] to confirm.

3. In CC mode, move the cursor to change the step value by pressing the

[ ] , and then adjust the current by pressing the [ ].

To set current range, follow the steps:

Step

1

2

3

Operation

Press [CC] , and then

+[CV] (Setup).

[Shift]

Set the current range,press

[ Enter] to confirm

Press [Esc] to escape.

VFD Display

RANGE=30.000A

RANGE =10.000A

HIGH=120.00V

Note: when you set the current range to low range(within 3A),the resolution of current will rise.

4.2 Constant Voltage Operation

(Set the voltage from 0.1V to the setting voltage limit)

There are three ways to change the voltage:

1. In CV mode, rotate Rotary knob.

2. In CV mode,input value through number key boards directly,press [Enter] to confirm

3. In CV mode, move the stepping cursor by pressing [ adjust the voltage by pressing [ ] .

To set voltage range, follow the steps:

Steps Operation

1 Press [CV] , then

[Shift] + [CV]

.

VFD Display

RANGE=120.00V

] , and then

2 Set the voltage range, press

[ Enter] to confirm

Press [Esc] to escape.

RANGE=10.00V

HIGH=30.000A 3

Note: When you set the voltage range to low range,the resolution of voltage will rise.

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Basic Operation

4.3 Constant Power Operation

(Set a value from 0 to upper limit of power)

There are three ways to set the power value:

1. In CW mode, rotate Rotary konb.

2. In CW mode, input value through number key boards directly,press [Enter] to confirm

3. In CW mode, move the stepping cursor by pressing [ adjust the power by pressing [ ] .

To set power range, follow the steps:

Steps

1

Operation

Press [CW] , then [Shift] +[CV] .

] , and then

VFD Display

RANGE=150.00W

2

3

Set the power range,press [Enter] to confirm

Press [Esc] to escape.

RANGE =100.00W

HIGH=120.00V

4.4 Constant Resistance Operation

(A llowed setting range is 0.05Ω to 7500Ω)

There are three ways to set the resistance value:

1. In CR mode, rotate Rotary knob.

2. In CR mode, input value through number key boards directly,press [Enter] to confirm

3. In CR mode, move the stepping cursor by pressing [ adjust the resistance by pressing [ ]

To set resistance range, follow the steps:

] , and then

Steps Operation

1

2

Press [CR], then

[Shift] +[CV]

(Setup) .

Set the resistance range,press [ Enter] to confirm

3 Press [Esc] to escape.

VFD Display

RANGE=7500.0Ω

RANGE =2000

Ω

HIGH=120.0V

4.5 Transient Test Operation

Transient operation enables the DC load to periodically switch between two levels.

To edit a transient test file, related parameters need to be set: A level, B level, time width (only in pulse mode), frequency, duty and running mode

(Continuous/Pulse/Toggled). If in CC dynamic mode, user can set current rising and falling slope additionally.

Following is an example to illustrate the three transient operations.

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Basic Operation

4.5.1 Continuous Transient Operation

Steps

1

2

3

4

5

6

7

8

9

10

11

Press [Shift] +[2] (Tran) to enter the transient operation setup menu:

Operation

Press

[Shift]+[2]

(Tran), move

VFD Display

TRAN ON OFF

[ ] key to select ON.

, press

[Enter] to confirm.

Preess [ ] to select transient operation mode as

CONTINUOUS (the indicator lamp

Trig will be lighted)

MODE CONTINUOUS >

Set the rising slope,press [Enter] to confirm

Set the descending slope,press

[Enter] to confirm

UP=1A/uS

DOWN=2/uS

Set level A ,press [Enter] to confirm

LEVEL A=5A

Set level B ,press [Enter] to confirm LEVEL B=10A

Set the frequency,press [Enter] to confirm

Set the dutyfactor,press [Enter] to confirm

Open the transient test function, mentain on the “on”selection, press

[Enter] to confirm.

Then the VFD will display TRAN A and Trig

FREQUNCE=50HZ(0.01-10000HZ)

DUTY=98%(%0.1-99.9%)

TRAN ON OFF

10.0000V 0.0000A

0.00W TRAN. 0

Trig

Turn on the load, press [Shift]+[ ]

(Trigger) to trigger

12

Press anyone of [CC/CV/CW/CR] button can quit the transient test,if you want to continue the test again, please repeat 1-11 steps

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4.5.2 Pulse Transient Operation

Basic Operation

Press [Shift]+[2] (Tran) enter the transient operation setup menu:

Steps

1

2

3

4

5

6

7

8

9

10

11

Operation

Press

[Shift]+[2]

(Tran), move [ ] key to select ON.

, press [Enter]

VFD Display to confirm.

Press [ ] to select MODE CONTINUOUS > transient operation mode as PULSE (the indicator lamp Trig will be lighted)

Set the rising slope, press

[Enter] to confirm

UP=1A/US

Set the descending slope,press [Enter] to confirm

Set level A,press [Enter] to confirm

Set level B,press [Enter] to confirm

Set the time width,press

[Enter] to confirm

TRAN ON OFF

DOWN=2A/US

Level A=5.000A

Level B=10.000A

WIDTH=5S(0.00005-3600S)

Open the transient test function, mentain on the

“on”selection , press

[Enter] to confirm

Then the VFD will display

TRAN and Trig

TRAN ON OFF

10.0000V 0.0000A

0.00W TRAN. 0

Trig

Turn on the load, press

[Shift]+[ ] (Trigger) to trigger

Press anyone of [CC/CV/CW/CR] button will quit the transient test,if you want to continue the test again,please repeat 1-10 steps.

4.5.3 Toggle Transient Operation

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Basic Operation

10A

5A

TRG

TRG

Toggled Transient Operation

Press [Shift]+[2] (Tran) to enter the transient operation setup menu

Steps

1

2

3

4

5

6

7

8

9

10

Operation

Press

[Shift]+[2]

(Tran), move

[ ] key to select on.

, press [Enter] to confirm.

Set transient operation mode as

TOGGLE (the indicator lamp

Trig will be lighted)

Set the rising slope, press

[Enter] to confirm.

Set the descending slope,press

[Enter] to confirm

VFD Display

TRAN On Off

MODE

CONTINUOUS >

UP=1A/US

DOWN=2A/US

Set level A, press [Enter] to confirm

Set level B, press [Enter] to confirm

Open the transient test function, function,press [Enter] to confirm

LEVEL A=5A

LEVEL B=10A

TRAN ON OFF

Then the VFD will display

TRAN and Trig

10.0000V 0.0000A

0.00W TRAN. 0

Trig

Turn on the load, press

[Shift]+[ ]

(Trigger) to trigger

Press anyone of [CC/CV/CW/CR] button will quit the transient test,if you want to continue the test again,please repeat 1-9 steps.

4.6 List Operation

Before run a list file,you should edit the list file firstly and save it in a non-volatile memory.The following examples will help you understand the function well.In the example, the output voltage and current are 10V and 3A,and the DC load is in CC mode.

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Basic Operation

Trigger

0

Steps

1

2

3

4

5

6

7

8

9

10

11

12

13

14

1 2 3 4 5

List count=1

List sequence

List count=2

Operation

Press

[Shift]+[3]

(List), make sure the ON is flashing,if not,press

[Enter] to select ON ,then press

[ ] key to select EDIT ,press

[Enter] to confirm.

Set the current range.

VFD Display

LIST ON

CALL EDIT

LIST RANGE=3A

Set list step count by number keys, and press [Enter] to confirm.

Set the first step’s current, press

[Enter] to confirm.

Set the first step’s rise slope, press [Enter] to confirm.

Set the first step’s time, such as

5S. Press Enter to confirm.

LIST STEP=2(2-84)

STEP 01 =1A

STEP 01 =0.1A/US

STEP 01 =5S

Set the second step’s current, such as 1A, press [Enter] to confirm.

Set the second step’s rise slope, such as 1A/uS press [Enter] to confirm.

STEP 01 =2A

STEP 01 =0.1A/US

Set the second step’s time, such as 5S. Press [Enter] to confirm.

Set repeat times, press [Enter] to confirm.

STEP 01 =5S

REAPEAT =3

Select the position to save file, such as 1, press [Enter] to confirm.

SAVE LIST =1(1-7)

Press [ ] to select ON , LIST ON CALL press

[Enter] to confirm (the Trig

EDIT indicator will be light now),press

[Esc].

Turn on the DC load, press

[Shift]+[ ]

(Trigger ) to trigger.

Press any function ksys if you want to quit list mode

If you want to run a list file you’ve saved, please recall it first.The steps is:

Steps Operation VFD Display

Copyright © Itech Electronics Co., Ltd. 36

1

2

3

Basic Operation

Press

[Shift]+[3]

(List), make sure the ON is flashing,if not,press

[

[Enter] to select ON ,then press

] to select CALL ,press

[Enter] to confirm.

Select the list file.Press [Enter] to confirm.

-

LIST ON CALL

EDIT

RECALL LIST =1

LIST ON CALL

EDIT

4.7 Test Files

Test files are a generalization of lists—they let you generate a sequence of tests using different modes, mode parameters, and durations. They are useful for executing a set of tests on a device, then displaying whether the tests passed or failed. We will illustrate how to use test files by a short example.

You can edit up to 10 groups of testing files, each file has 10 steps, it can edit up to 100 steps which can be saved in EEPROM (address).

Suppose we have a small AC to DC power supply (a "wall-wart") and we want to set up an acceptance test for a number of these devices. Our test will consist of two steps:

1. Set the DC load to constant current mode to draw the rated current of 1.2A from the device. The output voltage of the device at the rated current must be between 4.4V and 4.6V.

2. Set the DC load to constant voltage 3V. The output current of the device is between 2A and 3A.

3. When the device operates into a short, the supplied current must be larger than 3.0 A.

Steps

1

2

3

4

5

6

7

Operation

Press

[Shift]+[6]

(Prog),

Press [1] , [2] and [3] , Press

[Enter] to confirm.

Select the step that needs to pause during the test.

VFD Display

ACTIVE =0987654321

ACTIVE =0987654YYY

PAUSE

=NNNNNNN32Y

When it is paused,press [ ] can continue the test.

Step 3 short circuit testing, press [3] . And press [Enter] to confirm.

Set Ton for the first step, if you want to load on 2S, press [2] , and then press [Enter] to confirm.

Ton range 0~60S

Set Toff for the first step, if you want to load off 2S, press [2] , then press [Enter] to confirm

Toff range 0~60S

Set testing delay time, range

0~60S e.g. 1S, press [1].

SHORT

=NNNNNNNY21

SEQ01 ON =2S

SEQ01 OFF =2S

SEQ01 P/F =1S

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Steps

8

9

10

11

12

13

14

15

Basic Operation

Operation

Set Ton for the second step, if you want to load 2S, press

[2] , then press [Enter] to confirm

Set Toff of the second step, if you need 2S, press [2] , and then press [Enter] to confirm.

Set testing delay time of the second step, e.g. 1S, press

[1]

Set Ton for the third step, if you want to load on 3S, press

[3] , then press [Enter] to confirm

Set Toff of the third step, if you need 2S, press [2] , then press

[Enter] to confirm.

Set testing delay time of the third step, e.g. 2S, press [2] . set start voltage.Please refer to “function of auto start voltage”.

Set stop condition

VFD Display

SEQ02 ON =2S

SEQ02 OFF =2S

SEQ02 P/F =1S

SEQ03 ON =3S

SEQ03 OFF =2S

SEQ03 P/F =2S

AUTO START=0.000V

STOP

FAILURE

COMP

Function of Auto Start Voltage:

1. Auto start=0V.

Auto test file start to run when receive a trigger signal by pressing

[shift]+[trigge] r or providing a external trigger signal.

2. Auto start is not equal to 0V(Take 2V as an example)

In this condition,user only need to connect the charger to input termianls of

E-load.The unit can auto start to run test file when detect a rising edge from

0-2V.Auto start voltage is not suggested to be a big value.2V is suitable.

Ton, Toff and Tpf (P/F) Relation:

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Basic Operation

Tpf is the delay time for a step

15

16

Set stop conditions: COMP means stop test when all the steps are completed, FAILURE means stop test when the testing fails. Press

[Enter] key to confirm.

Select the test file to link if you’d like to. The linked file must be saved before. 0 stands for not linking to other files. Press [Enter] key to confirm.

STOP

FAILURE

CHAIN

=0(0-10)

COMP

PROGRAM

PROGRAM

Sequence

Save Group

PROGRAM

Sequence

Save Group

1

2

PROGRAM 10

Sequence

Save Group

1

1

1

11

1

91

2

2

2

12

2

92

3

3

3

13

3

93

4

4

4

14

4

94

5

5

5

15

5

95

6

6

6

16

6

96

7

7

7

17

7

97

8

8

8

18

8

98

9

9

9

19

9

99

10

10

10

20

10

100

17

18

19

Save the edited files in EEPROM, you can save up to 10 groups of files, e.g please press [1] to save the edited file in group 1, and then press [Enter] to confirm.

Select a operation mode and then press [Shift]+[CV] to set related parameters

SAVE

=1(1-10)

PROGRAM

10.0000V 0.0000A

0.00W CC=1.000A

Edit the three steps of the test file, details refer to below procedure.

After all the steps are set ,

Press [ESC] to exit setup, and then press

[Shift]+[4]

to save.

You need to recall the test file before runing it

Set the steps of a test file in the example

CC Mode, 1.2A, Voltage Range 4.4V~4.6V

Step

1

2

3

4

5

6

7

Operation

Press [CC] button,and then

[Shift) +[CV] (Setup) to enter the setting interface

Set the current range,press

[ Enter] to confirm set the upper limit of voltage, press [ Enter] to confirm

Set the lower limit of voltage, press [ Enter] to confirm

Set the rise speed of current, press [ Enter] to confirm

Set the fall speed of current, press [ Enter] to confirm

Finish the setup

VFD Display

RANGE=30.000A

CC

RANGE =1.2A

CC

HIGH=4.6V

CC

LOW=4.4V

CC

UP=1A/uS

CC

DOWN=1A/uS

CC

10.0000V 0.000A

0.00W CC=0.000A

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Basic Operation

CV Mode, 3V, Current Range 2A~3A

Steps Operation

1 Press [CV] button,press

[ Shift] +[CV] to set related parameters

2

3

Set the voltage range,press

[ Enter] to confirm set the upper limit of current,press [ Enter] to confirm

4

5

Set the lower limit of current,press [ Enter] to confirm

Finish the setup

VFD Display

RANGE=120.00V

RANGE=3.00V

HIGH=3A

LOW=2A

10.0000V 0.000A

0.00W CV=10V

The CW and CR is set as the same way:

 CW Mode

Steps Operation

1 Press [CW] button,press

[Shift] +[CV] to set related parameters

2

3

Set the power range,press

[ Enter] to confirm

Set the upper limit of voltage,press [ Enter] to confirm

4

5

Set the lower limit of voltage,press [ Enter] to confirm

Finish the setup

VFD Display

RANGE=150.00W

RANGE =1.00W

HIGH=120.00V

LOW=0.000V

10.0000V 0.000A

0.00W CW=1.00W

 CR Mode

Steps Operation

1 Press [CR] button,press

[Shift] +[CV] (Setup) to set related parameters

2

3

4

5

Set the resistance range,press

[ Enter] to confirm set the upper limit of voltage,press [ Enter] to confirm

Set the lower limit of voltage,press [ Enter] to confirm

Finish the setup

VFD Display

RANGE=7500.0Ω

RANGE =2Ω

HIGH=120.0V

LOW=0.000V

10.0000V 0.000A

0.00W CR=2.000Ω

 Go into Autotest Mode

Operation Display on Front Pannel

1.Press [Shift] +[8] (system) enter into sysmtem menu

2.Press right key,select

RUNMODE and confirm with

[Enter] button

0.0000V 0.000A

POWER-ON BUZZER

0.0000V 0.000A

RUN <NORMAL

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Basic Operation

3.Press direction key to select

OCP_TEST,Press [Enter] to confirm.

4,Press [Esc] button to quit menu set

0.0000V 0.000A

RUN <PROG_TEST

0.0000V 0.000A

P01

According to the following steps to escape OPP mode:

Press [Shift]+[8] (system)---”RUNMODE”--[Eneter] ----select “NORMAL” mode--[Enter].

(6)Start Auto Test File

Press [ ] (trigger) to provide a signal to start auto test file.The discharing process will be auto terminated when stop conditions are reached.

(7)Recall Test File

Press [Shift]+[Enter] button to select programe file,the panel displays

“RECALL PROGRAM= 1.Enter the file name(1-10),press [ Enter] button to confirm.

If you need a pause, please press [Shift]+[0] (pause).Press [ ] can continue the test.

Copyright © Itech Electronics Co., Ltd. 41

Communication Interfaces

Chapter5 Communication Interfaces

DB9 in the rear panel of the DC load could connect with RS-232 through on TTL connector. The following description may help you to know how to control the output of the DC load through PC.

WARNING: Don’t connect the DC load’s DB9 connector to a standard RS232 instrument; doing so may damage the instrument.

5.1Communication Modules Intruduction

IT-E121 Communication Module

The DB9 interface connector on the rear panel of the DC load is TTL voltage level; you can use the communication module IT-E121 and an a standard

RS232 extension cable to connect the DB9 interface connector of the DC load and the RS-232 interface connector of computer for the communication.

IT-E121A Communication Module

The DB9 interface connector on the rear panel of the DC load is TTL voltage level; you can use the communication module IT-E121A and an a standard

RS232 extension cable to connect the DB9 interface connector of the DC load and the RS-232 interface connector of computer for the communication.

IT-E121A is derived on the basis of IT-E121,the main difference between them is that the DB9 interface connector of the RS232 changes from female to male ,so that can be directly connected to the standard LAN interface.

IT-E121A communication cable

IT-E122 Communication Module

The DB9 interface connector on the rear panel of the DC load is TTL voltage level;

Copyright © Itech Electronics Co., Ltd. 42

Communication Interfaces

IT-E122 has a USB interface on one end,you can use IT-E122 and an a standard USB extension cable to connect the DB9 interface connector of the

DC load and the USB interface connector of computer for the communication.

IT-E123 Communication Module

The DB9 interface connector on the rear panel of the DC load is TTL voltage level;

The interface on both side port of IT-E123 are DB9 interface and RS485 interface, you can use the communication module IT-E123 and an a standard RS485-RS232 conversion cable to connect the DB9 interface connector of the DC load and the RS-232 interface connector of computer for the communication.

RS485 pins

5.2 Communication with PC

Before using the remote operation mode, please make sure that the baud rate and communication address in the DC load are the same as in the computer software, otherwise, the communication will fail, you can change the baud rate and communication address from the front panel or from computer.

Copyright © Itech Electronics Co., Ltd. 43

Communication Interfaces

DB9 Serial Port

In order for the computer to communicate with the DC load, both must be set to the same RS-232 settings. These communication settings are:

1. Address: the range is from 0 to 31, default setting is 0

2. Baud rate: 4800,9600,19200 and 38400 are selectable, default setting is

9600. Refer to chaptor 1.7.

3. Data bit: 8 bit

4. Stop bit: 1

5. Parity: None,Even, Odd, default is None, refer to chaptor1.7.

Parity=None Start Bit 8 Data Bits Stop Bit

RS-232

IT8514B+/IT8514C+/IT8516C+ series electronic load have a DB9 interface on rear panel. Connect E-load and computer by cable of COM ends (DB9).

Composite key [Shift]+[8] on front board can be used to enter system menu for activation.

 RS-232 Interface

In RS-232 interface, all SCPI commands can be used for programming. If

RS-232 interface is selected, in accordance with internal connection of data terminal equipment (DTE) and data communication equipment (DCE) as defined in EIA RS-232, the load is connected to another DTE (e.g., PC COM interface) with direct-connected Modem cable.

Base Pin

Number

Description

1 No conjunction

2 TXD, data transmission

RS232 Pins of Plug

3 RXD, data receiving

4

5

6

No conjunction

GND, grounding

No conjunction

7

8

9

CTS, clear to send

RTS, request to send

No conjunction

 Communication Setup

Please ensure the PC and the load have the same configuration in the following items.

Baudrate: 9600(4800 、 9600 、 19200 、 38400).You could enter the system menu

Copyright © Itech Electronics Co., Ltd. 44

to set the baudrate.

Data bit: 8

Stop bit: 1

Parity bit: (none,even,odd)

EVEN 8 data bits have even parity

ODD 8 data bits have odd parity

NONE 8 data bits have no parity

Native machine address: ( 0 ~31, factory default is 0)

Communication Interfaces

Start Bit 8 Data Bits Parity=None Stop Bit

5.3USB Interface

Connect the load and the computer using a cable with two USB interfaces

(each end). All functions of the load can be programmed via USB.

After connecting the load and computer by USB, you need to install IT-E122 driver or IT-E132 driver ( see in ITECH CD or contact ITECH agent). The device manager of PC will display ‘Prolific USB-to-Serial COM Port’ after installing.

Notes: Only IT8514B+/8514C+/IT8516C+ models have the USB commucation interface. Just use USB line to connect in commucation. ( Please don’t connect

DB9 interface at the same time). Don’t need to set the menu.

Copyright © Itech Electronics Co., Ltd. 45

Specifications

Chapter6 Specifications

Specifications

Model IT8511+ input voltage 0~120V

Rated input current 0~3A value

( 0~40 ℃ )

Minimum operation 0.14V at 3A value

0~30A

1.4V at 30A range 0.1~18V 0.1~120V

0~3A

0.12V at 3A

0.1~18V

IT8512+

0~120V

300W

0~30A

1.2V at 30A

0.1~120V

CV mode resolution range

1mV

0~3A

10mV

0~30A

1mV

0~3A

10mV accuracy ±(0.05%+0.02%FS) ±(0.05%+0.025%FS) ±(0.05%+0.02%FS)

±(0.05%+0.025%F

S)

0~30A resolution 0.1mA 1mA 0.1mA

1mA

CC mode

CR mode

*1

CP mode

*3 accuracy ±(0.05%+0.05%FS) range 0.05

Ω

~

10Ω

150W

10

Ω

~7.5K

Ω

0.05

Ω

~10

Ω

300W

10Ω

~7.5K

Ω resolution 16bit 16bit accuracy 0.01%+0.08S *2 0.01%+0.0008S 0.01%+0.08S *2 0.01%+0.0008S range resolution accuracy

10mW

±(0.1%+0.1%FS)

Dynamic mode

10mW

±(0.1%+0.1%FS)

CC

T1

T2 20uS~3600S /Res:1 uS accuracy 2uS±100ppm

20uS~3600S /Res:1 uS

2uS±100ppm

Rising/Falling slope *4 0.0001~0.2A/uS minimum rise time *5 ≒ 10uS

0.001~1.5A/uS

≒ 10uS

Measuring range

Readback voltage range resolution

0~18V

0.1 mV

0~120V

1 mV

Readback current accuracy range resolution

0~3A

0.1mA

0~18V

0.1 mV

±(0.025%+0.025%FS)

0~30A

1mA

0.0001~0.2A/uS

≒ 10uS

0~3A

0.1mA

Readback power accuracy range resolution accuracy

±(0.05%+0.05%FS)

150W

10mW

±(0.1%+0.1%FS)

Protection range

±(0.05%+0.05%FS)

300W

0.001~1.5A/uS

10mW

≒ 10uS

0~120V

1 mV

0~30A

1mA

±(0.1%+0.1%FS)

OPP

Protection

OCP

Protection

OVP

Protection

OTP

Protection

≒ 3.3A

160W

125V

85 ℃

≒ 33A ≒ 3.3A

≒ 320W

≒ 125V

≒ 85 ℃

≒ 33A

Short current(CC) voltage(CV)

≒ 3.3/3A

0V

Specification

≒ 33/30A

0V

≒ 3.3/3A

0V

≒ 33/30A

0V

Copyright © Itech Electronics Co., Ltd. 46

Specifications

OPP

Protecti on

OCP

Protecti on

OVP

Protecti on

OTP

Protecti on resistance(C

R) input

Impendanc e

Dimension

Model

≒ 45mΩ

1

50KΩ

214.5mm*88.2mm*354.6mm

IT8511A+

≒ 45mΩ input voltage 0~150V

Rated value

( 0~40 input power 150W

℃ )

Minimum operation value

0.25V at 3A

0~30A

2.5V at 30A

≒ 40mΩ ≒ 40mΩ

214.5mm*88.2mm*354.6mm

0~3A

IT8512A+

0~150V

0.14V at 3A

150KΩ

300W

0~30A

1.4V at 30A range 0.1~18V 0.1~150V 0.1~18V 0.1~150V

CV mode resolution accuracy range

1mV

±(0.05%+0.02%FS)

0~3A

10mV

±(0.05%+0.025%FS) ±(0.05%+0.02%FS)

0~30A

1mV

0~3A

10mV

±(0.05%+0.025%F

S)

0~30A

CC mode

CR mode

*1

CP mode

*3 resolution 0.1mA 1mA 0.1mA

20uS~3600S /Res:1 uS

2uS±100ppm

1mA accuracy range resolution

±(0.05%+0.05%FS) ±(0.05%+0.05%FS) ±(0.05%+0.05%FS)

0.05

Ω

~

10Ω

16bit

10

Ω

~

7.5KΩ

0.05

Ω

~

10Ω

16bit

±(0.05%+0.05%

FS)

10

Ω

~

7.5KΩ accuracy 0.01%+0.08S *2 0.01%+0.0008S

0.01%+0.08S *2 0.01%+0.0008S range 150W 300W resolution accuracy

10mW

±( 0.1%+0.1%FS )

10mW

±( 0.1%+0.1%FS )

Dynamic mode( CC mode )

T1

T2 accuracy

20uS~3600S /Res:1 uS

2uS±100ppm

Rising/Falling slope *4 0.0001~0.2A/uS minimum rise time *5 ≒ 10uS

0.001~1.5A/uS

≒ 10uS

0.0001~0.2A/uS 0.001~1.5A/uS

≒ 10uS ≒ 10uS

Readba ck voltage

Measuring range range 0~18V 0~150V 0~18V 0~150V resolution 0.1 mV 1 mV 0.1 mV 1 mV accuracy ±(0.025%+0.025%FS) ±(0.025%+0.025%FS) ±(0.025%+0.025%FS)

±(0.025%+0.025%

FS) range 0~3A 0~30A 0~3A 0~30A

Readba ck current

Readbac k power resolution accuracy range resolution accuracy

0.1mA 1mA

±(0.05%+0.05%FS)

150W

10mW

±(0.1%+0.1%FS)

Protection range

0.1mA

±(0.05%+0.05%FS)

300W

10mW

1mA

±(0.1%+0.1%FS)

≒ 320W

≒ 3.3A

≒ 160W

160V

85 ℃

≒ 33A ≒ 3.3A

160V

85 ℃

≒ 33A

Copyright © Itech Electronics Co., Ltd. 47

Short input

Impend ance

Dimensi on current( CC ) voltage( CV ) resistance( CR

)

Specification

≒ 3.3/3A

0V

80mΩ

150KΩ

214.5mm*88.2mm*354.6mm

≒ 33/30A

0V

≒ 80mΩ

Model input voltage input current 0~3A

( 0~40

)

CV mode

CC mode

CR mode *1

CP mode

*3

Dynamic mode

Minimum operation value range resolution accuracy range resolution accuracy range resolution accuracy range resolution accuracy

T1

T2 accuracy

Rising/Falling slope *4 minimum rise time

*5

1.2V at 3A

0.1~50V

1mV

±(0.05%+0.05%FS)

0~3A

0.1mA

±(0.05%+0.05%FS)

0.5

Ω

~

10Ω

0.0001~0.2A/uS

10uS

3.3/3A

0V

40mΩ

150KΩ

214.5mm*88.2mm*354.6mm

IT8511B+

0~500V

150W

16bit

0~10A

0~10A

1mA

10uS

4V at 10A

0.1~500V

Specifications

33/30A

0V

40mΩ

10mV

±(0.05%+0.05%FS)

±(0.05%+0.05%FS)

10

Ω

~

7.5KΩ

0.01%+0.08S *2 0.01%+0.0008S

150W

10mW

0.1%+0.2%FS

Dynamic mode

CC mode

20uS~3600S /Res:1 uS

2uS±100ppm

0.001~0.8A/uS

Readback voltage

Readback current

Readback power

OPP Protection

OCP Protection

OVP Protection

OTP Protection range resolution accuracy range resolution accuracy range resolution accuracy

Measuring range

0~50V

1 mV

±(0.025%+0.025%FS)

0~3A

0.1mA

±(0.05%+0.05%FS)

150W

10mW

±(0.1%+0.2%FS)

Protection range

160W

≒ 3.3A

530V

85 ℃

0~500V

10 mV

±(0.025%+0.025%FS)

0~10A

1mA

11A

Copyright © Itech Electronics Co., Ltd. 48

Specification

3.3/3A

Specifications current( CC )

11/10A

Short voltage( CV ) 0V 0V resistance( C

R )

≒ 400mΩ ≒ 400mΩ input

Impendance

Dimension

1MΩ

214.5mm*88.2mm*354.6mm

( 0~40

Model

CC mode

)

CV mode input voltage input current 0~3A

IT8512B+

0~500V

0~15A 0~6A

IT8512C+

0~120V

0~60A

300 W

Minimum operation value range

0.6V at 3A 3V at 15A 0.25V at 6A 2.5V at 60A

0.1~50V 0.1~500V 0.1~18V 0.1~120V resolution 1mV 10mV 1mV 10mV accuracy ±(0.05%+0.02%FS) ±(0.05%+0.025%FS) ±(0.05%+0.02%FS)

±(0.05%+0.025%F

S) range 0~3A 0~15A 0~6A 0~60A resolution 0.1mA 1mA 0.1mA 1mA

CR mode

*1

CP mode

*3 accuracy range 0.3

Ω

~

10Ω

±(0.05%+0.05%FS)

10

Ω

~7.5K

Ω

0.3

Ω

~

10Ω

10

Ω

~7.5K

Ω resolution 16bit 16bit accuracy 0.01%+0.08S *2 0.01%+0.0008S 0.01%+0.08S

*2 0.01%+0.0008S range 300W 300W resolution accuracy ±(

10mW

0.1%+0.1%FS)

Dynamic mode

10mW

±( 0.1%+0.1%FS)

T1

T2 accuracy

CC mode

20uS~3600S /Res:1 uS

2uS±100ppm

20uS~3600S /Res:1 uS

2uS±100ppm

Rising/Falling slope *4 0.0001~0.2A/uS 0.001~0.8A/uS 0.0001~0.3A/uS 0.001~3A/uS minimum rise time *5 ≒ 10uS ≒ 10uS ≒ 10uS ≒ 10uS

Measuring range

Readback voltage

Readback current

Readback power

OPP

Protection

OCP

Protection

OVP

Protection range resolution accuracy range resolution accuracy range resolution accuracy

≒ 3.3A

0~50V

1 mV

0~500V

10mV

0~18V

1 mV

±(0.025%+0.025%FS)

0~15A 0~6A 0~3A

0.1mA 1mA

±(0.05%+0.05%FS)

300W

10mW

±(0.1%+0.1%FS)

Protection range

0.1mA 1mA

±(0.05%+0.05%FS)

300W

10mW

0~120V

10mV

0~60A

±(0.1%+0.1%FS)

≒ 320W

≒ 320W

≒ 530V

≒ 16A

Copyright © Itech Electronics Co., Ltd.

≒ 6.5A

≒ 125V

≒ 65A

49

Copyright © Itech Electronics Co., Ltd.

Specifications

OTP

Protection

≒ 85 ℃

Short current( CC ) voltage( CV ) resistance( C

R )

3.3/3A

0V

180mΩ

Specification

≒ input

Impendanc e

Dimension

Model input voltage input current

1MΩ

214.5mm*88.2mm*354.6mm

0~1A

16/15A

0V

180mΩ

6.5/6A

0V

40mΩ

≒ 85 ℃

150KΩ

0~5A

65/60A

0V

40mΩ

214.5mm*88.2mm*354.6mm

IT8512H+

0~800V

300W

( 0~40 ℃ )

CV mode

CC mode

Minimum operation value range resolution accuracy range resolution

1.4V at 1A

0.1~80V

1mV

±(0.05%+0.05%FS)

0~1A

0.1mA

7V at 5A

0.1~800V

10mV

±(0.05%+0.05%FS)

0~5A

1mA

CR mode *1

CP mode

*3

Dynamic mode accuracy range resolution accuracy range resolution accuracy

T1

T2 accuracy

Rising/Falling slope *4 minimum rise time

*5

±(0.05%+0.1%FS)

2

Ω

~

10Ω

±(0.05%+0.05%FS)

10

Ω

~

7.5KΩ

16bit

0.01%+0.08S *2 0.01%+0.0008S

300W

10mW

0.2%+0.2%FS

Dynamic mode

CC mode

20uS~3600S /Res:1 uS

2uS±100ppm

0.0001~0.04A/uS

≒ 20uS

0.001~0.2A/uS

≒ 20uS

Readback voltage

Readback current

Readback power

OPP Protection

OCP Protection range resolution accuracy range resolution accuracy range resolution accuracy

Measuring range

0~80V

1 mV

0~800V

10 mV

±(0.025%+0.025%FS)

0~1A

0.1mA

±(0.025%+0.025%FS)

±(0.05%+0.05%FS)

0~5A

1mA

300W

10mW

±(0.2%+0.2%FS)

Protection range

≒ 320W

1.1A

5.5A

50

OVP Protection

OTP Protection current( CC )

Short voltage( CV ) resistance( C

R ) input

Impendance

Dimension

Model input voltage input current

( 0~40 ℃ )

CV mode

CC mode

CR mode

CP mode

*3

*1

Minimum operation value range resolution accuracy range resolution accuracy range resolution accuracy range resolution accuracy

Dynamic mode

Readback voltage

Readback current

Readback power

OPP

T1

T2 accuracy

Rising/Falling slope *4 minimum rise time

*5 range resolution accuracy range resolution accuracy range resolution accuracy

≒ 850V

≒ 85 ℃

Specification

1.1/1A

0V

≒ 1.4Ω

2MΩ

214.5mm*88.2mm*354.6mm

5.5/5A

0V

Specifications

0~6A

IT8513A+

0~150V

400W

0~60A

0.25V at 6A 2.5V at 60A

0.1~18V

1mV

±(0.05%+0.02%FS)

0~6A

0.1mA

0.1~150V

10mV

±(0.05%+0.025%FS)

0~60A

1mA

±(0.05%+0.05%FS)

0.1

Ω

~

10Ω

16bit

0.01%+0.08S *2

400W

10mW

±(0.2%+0.2%FS)

Dynamic mode

±(0.05%+0.05%FS)

10

Ω

~

7.5KΩ

0.01%+0.0008S

CC mode

20uS~3600S /Res:1 uS

2Us

100ppm

0.001~0.15A/uS 0.01~1 A/uS

50uS

60uS

Measuring range

0~18V

0.1 mV

±(0.025%+0.025%FS)

0~6A

0.1mA

±(0.05%+0.05%FS)

400W

10mW

±(0.2%+0.2%FS)

Protection range

420W

0~150V

1mV

±(0.025%+0.025%FS)

0~60A

1mA

Copyright © Itech Electronics Co., Ltd. 51

Protection

OCP

Protection

OVP

Protection

OTP

Protection

≒ 6.6A

165V

85 ℃

Specification

6.6/6A

66A

Specifications current( CC )

66/60A

Short voltage( CV )

0V resistance( C

R ) input

Impendanc e

Dimension

Model input voltage input current

280K

Ω

30mΩ

214.5mm*88.2mm*453.5mm

0~12A

IT8513C+

0~120V

0~120A 0~24A

IT8514C+

0~120V

0~240A

1500W

( 0~40 ℃ )

Minimum operation value range

0.2V at 12A

0.1~18V

2V at 120A

0.1~120V

0.25V at 24A

0.1~18V

2.5V at 240A

0.1~120V

CV mode

CC mode

CR mode

*1

CP mode

*3 accuracy range resolution

±(0.05%+0.05%FS)

0.05

Ω

~

10Ω

16bit

10

Ω

~7.5K

Ω

±(0.1%+0.1%FS)

0.05

Ω

~

10Ω

10

Ω

~

7.5KΩ

16bit accuracy 0.01%+0.08S *2 0.01%+0.0008S 0.02%+0.08S *2 0.02%+0.0008S range resolution accuracy

600W

10mW

±( 0.2%+0.2%FS)

Dynamic mode

CC mode

1500W

10mW

±(0.2%+0.2%FS)

T1

T2 100uS~3600S /Res:1 uS 100uS~3600S /Res:1 uS accuracy 10uS±100ppm 10uS±100ppm

Rising/Falling slope *4 0.001~0.2A/uS minimum rise time *5 ≒ 60uS

0.01~1.6A/uS

≒ 60uS

Measuring range

Readback voltage range resolution

0~18V

0.1 mV

0~120V

1mV accuracy

0.001~0.3A/uS

≒ 60uS

0~18V

0.1 mV

±(0.025%+0.025%FS)

0.01~3.2A/uS

≒ 60uS

0~120V

1mV range 0~12A 0~120A 0~24A 0~240A

Readback current resolution 1mV 10mV 1mV 10mV accuracy ±(0.05%+0.02%FS) ±(0.05%+0.025%FS) ±(0.05%+0.02%FS)

±(0.05%+0.025%F

S) range 0~12A 0~120A 0~24A 0~240A resolution 1mA 10mA 1mA 10mA resolution accuracy

1mA 10mA

±(0.05%+0.05%FS)

1mA 10mA

±(0.05%+0.05%FS)

Readback power range resolution

600W

10mW

1500W

10mW

Copyright © Itech Electronics Co., Ltd. 52

Specifications accuracy ±(0.2%+0.2%FS)

Protection range

OPP

Protection

OCP

Protection

OVP

Protection

OTP

Protection

≒ 13A

620W

125V

95 ℃

≒ 130A

Short current( CC ) voltage( CV ) resistance( C

R )

13/12A

0V

15mΩ

Specification

≒ 130/120A

0V

15mΩ input

Impendanc e

Dimension

Model input voltage input current

150KΩ

214.5mm*88.2mm*453.5mm

0~6A

IT8514B+

0~500V

0~60A

( 0~40 ℃ )

CV mode

±(0.2%+0.2%FS)

26.7A

26.7/24A

0V

8mΩ

1550W

125V

85 ℃

150KΩ

≒ 267A

267/240A

0V

8mΩ

436.5mm*88.2mm*463.5mm

0~24A

IT8516C+

0~120V

0~240A

3000W

Minimum operation value range

0.25V at 6A 2.5V at 60A 0.15V at 24A 1.5V at 240A

0.1~50V 0.1~500V 0.1~18V 0.1~120V resolution 1mV 10mV 1mV 10mV accuracy ±(0.05%+0.02%FS) ±(0.05%+0.025%FS) ±(0.05%+0.02%FS)

±(0.05%+0.025%F

S) range 0~6A 0~60A 0~24A 0~240A

CC mode resolution 1mA 10mA 1mA 10mA

CR mode

*1

CP mode

*3 accuracy range resolution

±(0.05%+0.05%FS)

0.05

Ω

~

10Ω

16bit

10

Ω

~7.5K

Ω

±(0.1%+0.1%FS)

0.05

Ω

~

10Ω

10

Ω

~

7.5KΩ

16bit accuracy 0.02%+0.08S *2 0.02%+0.0008S

0.02%+0.08S *2 0.02%+0.0008S range 1500W 3000W resolution accuracy

10mW

±( 0.2%+0.2%FS )

Dynamic mode

10mW

±( 0.2%+0.2%FS )

CC mode

T1

T2 accuracy

100uS~3600S /Res:1 uS

10uS±100ppm

120uS~3600S /Res:1 uS

10uS±100ppm

Rising/Falling slope *4 0.001~0.15A/uS minimum rise time *5 ≒ 60uS

Readback voltage range resolution accuracy

0~50V

0.1 mV

0.01~0.8A/uS 0.001~0.3A/uS 0.01~2.8A/uS

≒ 60uS ≒ 70uS ≒ 70uS

Measuring range

0~500V

1mV

0~18V

0.1 mV

±(0.025%+0.025%FS)

0~120V

1mV

Readback current range resolution accuracy

0~6A

1mA

0~60A

10mA

±(0.05%+0.05%FS)

0~24A

1mA

0~240A

10mA

±(0.1%+0.1%FS)

Readback power range resolution accuracy

1500W

10mW

±(0.2%+0.2%FS)

3000W

10mW

±(0.2%+0.2%FS)

Copyright © Itech Electronics Co., Ltd. 53

Specifications

Protection range

OPP

Protection

OCP

Protection

OVP

Protection

OTP

Protection

≒ 6.7A

≒ 1550W

530V

85 ℃

≒ 67A ≒ 26A

≒ 3050W

125V

85 ℃

≒ 260A

Short current( CC ) voltage( CV ) resistance( C

R )

6.7/6A

0V

30mΩ

Specification

67/60A

0V

30mΩ

26/24A

0V

5mΩ

260/240A

0V

5mΩ input

Impendanc e

Dimension

150KΩ 150KΩ

436.5mm*88.2mm*463.5mm 436.5mm*176mm*463.5mm

*1

*2

The voltage/current input is no less than 10% FS

The scope of read-back resistance is

:( 1/(1/R+(1/R)*0.01%+0.08),1/(1/R-(1/R)*0.01%-0.08) )

*3

IT8514B+/14C+/16C+: ( 1/(1/R+(1/R)*0.02%+0.08),1/(1/R-(1/R)*0.02%-0.08) )

The voltage/current input is no less than 10% FS

*4 .Ascending/descending slope: 10%-90% current ascending slope from 0 to maximum current

*5 Minimum rise time: 10%-90% current rise time

*

The above specifications may be subject to change without prior notice.

Supplementary Characteristics

 Memory capacity:100 registeres

Suggested calibration frequency:Once a year

 AC input level(A transfer switch is selectable on the rear panel)

Option Opt.1: 220V ±10% 50Hz/60Hz

Option Opt.2: 110V ±10% 50Hz/60Hz

 Cooling type

Intelligent fans

 Fans working principle:

Fans running speed is determined by radiator temperature.When temperature reaches 40 ,fans start to work and intellig ently adjust its speed with temperature variation.

Copyright © Itech Electronics Co., Ltd. 54

Appendix

Appendix

Specifications of Red and Black Test Lines

ITECH provides you with optional red and black test lines, which individual sales and you can select for test. For specifications of ITECH test lines and maximum current values, refer to the table below.

Model

IT-E301/10A

IT-E301/30A

IT-E301/30A

IT-E301/60A

IT-E301/120A

IT-E301/240A

IT-E301/240A

IT-E301/360A

Specification Cross Section Length

10A

30A

30A

60A

120A

240A

240A

360A

-

6mm

2

6mm

2

20mm

2

50mm

2

70mm

70mm

95mm

2

2

2

1m

1.2m

2m

1.5m

2m

1m

2m

2m

For maximum current of AWG copper wire, refer to table blow.

AWG 10 12 14 16 18 20 22 24 26 28

The

Maximum

Current

Value( A)

40 25 20 13 10 7 5 3.5 2.5 1.7

Note: AWG ( American Wire Gage), it means X wire ( marked on the wire). The table above lists current capacity of single wire at working temperature of 30°C.

For reference only.

Copyright © Itech Electronics Co., Ltd. 55

Contact Us

Thanks for purchasing ITECH products. In case of any doubts, please contact us as follows:

1.

Refer to accompanying data disk and relevant manual.

2.

Visit ITECH website: www.itechate.com.

3. Select the most convenient contact method for further information.

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