I-Tech IT8500plus Series User manual

IT8500 USER MANUAL
User Manual
1
User’s Manual
DC Programmable Electronic Load
Model IT8500plus series
IT8511+/IT8512+/IT8512B+/IT8512C+
/IT8513C+/IT8514B+/IT8514C+/IT8516C+
©Copyright 2010 All Right Reserved
Ver1.1 /MAR, 2013/ IT8500+
Via Acquanera, 29 22100 Como
tel. 031.526.566 (r.a.) fax 031.507.984
[e-mail] www.calpower.it

IT8500 USER MANUAL
User Manual
2
CHAPTER1 INSPECTION AND INSTALLATION ......................................................................................... 7
1.1 INSPECTION........................................................................................................................................... 7
1.2 CLEANING ............................................................................................................................................. 7
1.3 INSTALLATION ........................................................................................................................................ 7
1.3.1 Mounting Dimensions .................................................................................................................. 7
1.3.2 Adjustment of handle ................................................................................................................. 11
1.3.3 Rack mounting ........................................................................................................................... 12
1.4 INPUT CONNECTIONS............................................................................................................................ 14
CHAPTER2 QUICK STARTS...................................................................................................................... 15
2.1 POWER-ON SELFTEST .......................................................................................................................... 15
2.1.1 Introduction ................................................................................................................................ 15
2.1.2 Selftest steps ............................................................................................................................. 15
2.1.3 Instrument won't turn on ............................................................................................................ 15
2.2 FRONT PANNEL INTRODUCTION ............................................................................................................. 17
2.3 REAR PANNEL INTRODUCTION .............................................................................................................. 18
2.4 VFD DISPLAY ANNUNCIATORS .............................................................................................................. 19
2.5 FRONT PANEL KEYS ............................................................................................................................. 19
2.6 COMBINATION KEYS ............................................................................................................................. 20
CHAPTER3 SPECIFICATIONS .................................................................................................................. 21
3.1 SPECIFICATIONS .................................................................................................................................. 21
3.2 SUPPLEMENTARY CHARACTERISTICS .................................................................................................... 25
CHAPTER4 FUNCTIONS AND CHARACTERISTICS................................................................................ 26
4.1 LOCAL MODE/REMOTE MODE ................................................................................................................ 26
4.2 OPERATION MODE ............................................................................................................................... 26
4.2.1 Constant current mode(CC)....................................................................................................... 26
4.2.2 Constant voltage mode(CV) ...................................................................................................... 27
4.2.3 Constant resistance mode(CR) ................................................................................................. 27
4.2.4 Constant power mode(CW) ....................................................................................................... 27
4.3 INPUT ON/OFF CONTROL ....................................................................................................................... 28
4.3.1 On/Off operation ........................................................................................................................ 28
4.3.2 Short........................................................................................................................................... 28
4.4 SYSTEM MENU (SYSTEM) ..................................................................................................................... 28
4.5 CONFIG MENU (CONFIG)....................................................................................................................... 29
4.6 TRIGGER FUNCTION ............................................................................................................................. 30
4.6.1 Trigger operation........................................................................................................................ 30
4.6.2 Trigger source............................................................................................................................ 31
4.7 TRANSIENT FUNCTION .......................................................................................................................... 31
4.7.1 Continuous mode....................................................................................................................... 31
4.7.2 Pulse mode ................................................................................................................................ 31
4.7.3 Toggled mode ............................................................................................................................ 32
4.8 LIST OPERATION ................................................................................................................................. 32
4.9 SAVING AND RECALLING SETTINGS ........................................................................................................ 32
4.10 VON FUNCTION ................................................................................................................................. 33
4.11 OCP OPERATION ............................................................................................................................... 35
4.12 OPP OPERATION ............................................................................................................................... 36
4.13 BATTERY TEST................................................................................................................................... 36
4.14 PROTECTION FEATURES ..................................................................................................................... 39
4.14.1 Over Voltage Protection (OVP)................................................................................................ 39
4.14.2 Over Current Protection (OCP)................................................................................................ 39
4.14.3 Over Power Protection (OPP).................................................................................................. 39
4.14.4 Over Temperature Protection (OTP) ....................................................................................... 40
4.14.5 Reverse voltage protection (LRV)............................................................................................ 40
4.15 KEY LOCK FUNCTION ......................................................................................................................... 40
4.16 THE TERMINALS ON THE REAR PANEL .................................................................................................. 40
4.16.1 Remote sensing ....................................................................................................................... 40

IT8500 USER MANUAL
User Manual
3
4.16.2 External Triggering................................................................................................................... 41
4.16.3 Current monitoring (I Monitor).................................................................................................. 41
CHAPTER 5 BASIC OPERATION .............................................................................................................. 42
5.1 OPERATION MODE................................................................................................................................ 42
5.1.1 Constant current operation ........................................................................................................ 42
5.1.2 Constant voltage operation........................................................................................................ 42
5.1.3 Constant power operation.......................................................................................................... 42
5.1.4 Constant resistance operation ................................................................................................... 43
5.2 TRANSIENT TEST OPERATION ................................................................................................................ 43
5.2.1 Continuous transient operation.................................................................................................. 44
5.2.2 Pulse transient operation ........................................................................................................... 45
5.2.3 Toggle transient operation ......................................................................................................... 46
5.3 LIST OPERATION .................................................................................................................................. 46
5.4 TEST FILES .......................................................................................................................................... 48
CHAPTER6 COMMUNICATION INTERFACES ......................................................................................... 53
6.1COMMUNICATION MODULES INTRUDUCTION ............................................................................................ 53
6.2 COMMUNICATION WITH PC ................................................................................................................... 54

IT8500 USER MANUAL
User Manual
4
Warranty Information
Certification
We certify that this product met its published specifications at time of shipment from the
factory.
Warranty
This hardware product is warranted against defects in material and workmanship for a
period of ONE year from date of delivery. During the warranty period our company will
either repair or replace products which prove to be defective. Our company does not
warranty that the operation for the software firmware or hardware shall be uninterrupted
or error free.
For warranty service, with the exception of warranty options, this product must be
returned to a service facility designated by our company. Customer shall prepay shipping
charges (and shall pay all duty and taxes) for products returned to our place for warranty
service. Our company shall pay for return of products to Customer.
Limitation of Warranty
The foregoing warranty shall not apply to defects resulting from improper or inadequate
maintenance by the Customer, Customer-supplied software or interfacing, unauthorized
modification or misuse, operation outside of the environmental specifications for the
product, or improper site preparation and maintenance.
Assistance
The above statements apply only to the standard product warranty. Warranty options
product maintenance agreements and customer assistance agreements are also
available.
Safety Summary
The following general safety precautions must be observed during all phases of operation
of this instrument. Failure to comply with these precautions or with specific warnings
elsewhere in this manual violates safety standards of design, manufacture, and intended
use of the instrument .We assumes no liability for the customer’s failure to comply with
these requirements.
Environmental Conditions
This instrument is intended for indoor use in a pollution degree 2 environment. It is
designed to operate at a maximum relative humidity of 80%. Refer to the specifications
tables for the AC mains voltage requirements and ambient operating temperature range.
Before Applying Power
Verify that all safety precautions are taken. Note the instrument's external markings
described under "Safety Symbols".
Ground the Instrument
This product is a Safety Class 1 instrument (provided with a protective earth terminal). To
minimize shock hazard, the instrument chassis and cover must be connected to an

IT8500 USER MANUAL
User Manual
5
electrical ground. The instrument must be connected to the AC power through a
grounded power cable, with the ground wire firmly connected to an electrical ground
(safety ground) at the power outlet. Note: Any interruption of the protective (grounding)
conductor or disconnection of the protective earth terminal will cause a potential shock
hazard that could result in personal injury.
DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE
Do not operate the instrument in the presence of fumes or flammable gases.
KEEP AWAY FROM LIVE CIRCUITS
Operating person must not remove instrument covers except as instructed in this Guide
for installing or removing electronic load modules. Component replacement and internal
adjustments must be made only by qualified service personnel. Do not replace
components with the power cable connected. Under certain conditions dangerous
voltages may exist even with the power cable removed. To avoid injuries always
disconnect power, discharge circuits and capacitors, and remove external voltage
sources before touching components.
DO NOT SERVICE OR ADJUST ALONE
Do not try to perform internal service or adjustment unless another person capable of
rendering first aid resuscitation is present.
Safety Symbols
Direct current
Alternating current
Both direct and alternating current
Protective earth (ground) terminal
Caution (refer to accompanying documents)
WARNING
The WARNING sign denotes a hazard. It calls attention to a procedure, practice, or the
like, which, if not correctly performed or adhered to, could result in personal injury. Do not
proceed beyond a WARNING sign until the indicated conditions are fully understood and
met.
CAUTION
The CAUTION sign denotes a hazard. It calls attention to an operating procedure, or the
like, which, if not correctly performed or adhered to, could result in damage to or
destruction of part or all of the product. Do not proceed beyond a CAUTION sign until the
indicated conditions are fully understood and met.
NOTE
We suggest you operate the instrucment after half an hour warm machine operation to
ensure the accuracy.
The content of this manual is subject to change without notice.

IT8500 USER MANUAL
User Manual
6
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.
• Highlight VFD display
• Dynamic mode: Up to 10KHZ;
• Measurement resolution: 0.1mV,0.1mA
• Measurement speed: up to 40KHZ
• Four operation mode:CV(Constant Voltage),CC,CR,CW
• Rotary knob, making the operation more convenient
• Remote Sense function
• Battery test function
• Memory capacity to save/recall setting parameters: 100 registers
• Short circuit function
•Intelligent fans
• Build-in Buzzer as alarm signal
• Power off memory function
Operational accessory:
IT8511+/IT8512+/IT8512B+/IT8512C+/ IT8513C+ optional accessory:
IT-E121(RS232)，IT-E122(USB)，IT-E123(RS485)
IT-E151(Rack mount kit)
IT8514B+/IT8514C+/IT8516C+ optional accessory:
No, the models equipped with RS232/USB interface.
Model Voltage Current Power Communication
interface
IT8511+ 120V 30A 150W COM
IT8512+ 120V 30A 300W COM
IT8512B+ 500V 15A 300W COM
IT8512C+ 120V 60A 300W COM
IT8513C+ 120V 120A 600W COM
IT8514B+ 500V 60A 1500W USB/RS232
IT8514C+ 120V 240A 1500W USB/RS232
IT8516C+ 120V 240A 3000W USB/RS232

IT8500 USER MANUAL
User Manual
7
Chapter1 Inspection and Installation
1.1 Inspection
Make sure that you have received the following compontents in the table below (one
instrucment for example).If anything has been lost, please contact with your franchiser.
Item Part Number Description
One power
cord
IT-E171
You can choose different power cord
according to your region.
IT-E172
IT-E173
IT-E174
One user’s
manual
Installation,operation,self-test information
One test
report
Calibration report
1.2 Cleaning
Do not clean any internal parts of the electronic loads casually.If you need to clean the
outside cover, please use a dry cloth or moistish cloth to wipe.
Caution: Cut the power off before cleaning.
1.3 Installation
The following outside drawing has marked the dimension information.The instrucment
should be fixed in a ventilation and reasonable size of space.
1.3.1 Mounting Dimensions
IT8511+/IT8512+/IT8512B+/IT8512C+ Dimension：
214.5 mmW x 88.2mm H x 354.6mm D
Refer to the following dimension drawing:

IT8500 USER MANUAL
User Manual
8
unit：minimeter（mm）
IT8513C+ Dimension：
214.5 mmW x 88.2mm H x 453.5mm D
unit：minimeter（mm）
IT8514B+/IT8514C+ Dimension：
436.5 mmW x 88.2mm H x 463.5mm D

IT8500 USER MANUAL
User Manual
9
unit：minimeter（mm）
IT8516C+ Dimension：
482.5 mmW x 174.5mm H x 531.5mm D

IT8500 USER MANUAL
User Manual
10

IT8500 USER MANUAL
User Manual
11
unit：minimeter（mm）
1.3.2 Adjustment of handle
Model IT8511+/IT8512+/IT8512B+/IT8512C+/IT8513C+ has handle. The following
pictures demonstrate various ways to use the handle. Please use proper strength to
adjust the handle to enable it in a favorable location.

IT8500 USER MANUAL
User Manual
12
The handle may be removed if desired. The way to remove the handle:
Move the handle to depart it from the load’s side by 2mm and then rotate the handle to
the position as below pictures, remove it.
1.3.3 Rack mounting
Model IT8511+/IT8512+/IT8512B+/IT8512C+/IT8513C+can be mounted into a standard
19-inch rack. Rack mount kits are available as Option IT-E151. The electronic load can
be mounted in a standard 19-inch rack panel or enclosures using an Option IT-E15C1
rack mount kit. A rack mount kit for joining two half-rack units is also available by using
Option IT-E151.
Before you install IT-E151, you should first remove the handle as described in 1.3.2
Then tear the tags on both sides.

IT8500 USER MANUAL
User Manual
13
Rack Installation:
Elevation for Installation one electronic load in a standard 19-inch rack
Side elevation for Installation one electronic load in a standard 19-inch rack
Elevation for Installation two electronic loads in a standard 19-inch rack
Caution: Be careful not to grip your fingers due to too much strength when you
take off the handle.

IT8500 USER MANUAL
User Manual
14
1.4 Input connections
Power Cord
Connect the power cord to the IEC 320 connector on the rear of the unit. If the wrong
power cord was shipped with your unit, contact your nearest Agent to obtain the correct
cord. See the following figure for the part number and ordering options.
E
NL
E
LN
E
NL
E
LN
China United States/Canada Europe United Kingdom
IT-E171 IT-E172 IT-E173 IT-E174

IT8500 USER MANUAL
User Manual
15
Chapter2 Quick Starts
2.1 Power-on selftest
2.1.1 Introduction
A successful test process indicates that the instrucment meets the factory specifications
and can be operated well.
2.1.2 Selftest steps
Power cord should be connected correctly.Following is the detailed selftest steps.
Procedure VFD display Explanations
About 1S later System Selftest…. System self check
About 1S later 0.0000V 0.0000A
0.00W CC=0.000A
OFFCC Auto
VFD:
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
The third line display the input
state/operation mode
Press (Shift)+7
IT85XX Ver—1.XX
SN1:XXXXXXXXXXXXX
SN2: XXXXX
Display products information.You can
press direction buttons to examine
product’s model/SN/software version
It may display following prompts when selftest fail.
1. “Eeprom Fail” means EEPROM is not functional.
2. “Eeprom data lost” means parameters of power-on have been lost.Reset them by
pressing (Shift)+4(save)+0
3. “Cal data lost” means calibration date have been lost.
4. “Eeprom Data lost”means the system settings are lost, reset them in system menu.
If you experience these error messages, the instrument should be returned to ITECH for
service.
WARNING：The electronic load is shipped from factory with a power cord
that has a plug appropriate for your location. Your electronic load is
equipped with 3-wire grounding type power cord; the third conductor being
ground. The electronic load is grounded only when the power-line cord is
plugged into an appropriate receptacle. Do not operate your power supply
without adequate cabinet ground connection.
2.1.3 Instrument won’t turn on
If the instrument won’t turn on, please check as follows.
1) Check whether the power cord is connected well.

IT8500 USER MANUAL
User Manual
16
Please ensure the power cord is plugged into the back of the instrument, the other
end of the cord is plugged into a live AC power outlet and the power is on.
2) Check the power-line voltage setting.
The line voltage is set to the proper value for your country(110VAC or 220VAC) when
the electronic load is shipped from facory. Change the line voltage setting if it’s not
correct.
3) Check whether the fuse is ok.
If the instrument still won’t turn on, remove the power cord from the instrument. Open
the fuse container on the rear panel and check the fuse for continuity.Please refer 4)
to take down the fuse.
If the fuse is an open circuit, replace it with the proper fuse indicated in the following
table.
Model Fuse specification for 220
V AC operation
Fuse specification for 110
VAC operation
IT8511+ T0.5A 250V T1.25A 250V
IT8512+ T0.5A 250V T1.25A 250V
IT8512B+ T0.5A 250V T1.25A 250V
IT8512C+ T0.5A 250V T1.25A 250V
IT8513C+ T1.25A 250V T2.5A 250V
IT8514B+ T1.25A 250V T2.5A 250V
IT8514C+ T1.25A 250V T2.5A 250V
IT8516C+ T2.5A 250V T5A 250V
4) The method of replacing fuse
Use a flat-bladed screwdriver to open the small plastic cover under the AC input
connector on the rear panel of the load , then you can see the fuse. Please use the
matching fuse.（figure showing the fuse location）
Fuse

IT8500 USER MANUAL
User Manual
17
2.2 Front pannel introduction
Front panle of IT8511+/IT8512+/IT8512B+/IT8512C+/IT8513C+
Front panel of IT8514B+/IT8514C+
Front panel of IT8516C+

IT8500 USER MANUAL
User Manual
18
①Power switch
②VFD display
③Composite key and Local key
④Number key:
Set the parameters value
Achieve the menu’s function by key combination
⑤Function key:
Set the operation mode
Control the input state：On/Off
⑥Direction function
⑦Rotary knob
⑧Input terminal
2.3 Rear Pannel Introduction
Rear panel of IT8511+/IT8512+/IT8512B+/IT8512C+/IT8513C+
Rear panel of IT8514B+/IT8514C+

IT8500 USER MANUAL
User Manual
19
Rear panel of IT8516C+
①Fan
②Power swith (110V/220V)
③Power input socket
④I-monitor
⑤DB9 COM interface/RS232 interface（IT8514B+/IT8514C+/IT8516C+）
⑥Remote measurement and external trigger terminals
⑦USB interface
2.4 VFD Display annunciators
OFF The load is off. Error An error has occurred.
CC Constant current mode Trig Waiting for the trigger signal
CV Constant voltage mode Sense Remote sensing is on.
CR Constant resistance mode Prot OCP function is on.
CW Constant power mode Auto Voltage range automatically
seleted function is open
Rmt Instrument is in the remote
state. Lock The keyboard is locked.
Timer LOAN ON is on. Shift Shift button has been pressed.
2.5 Front panel keys
( Blue-green) Shift button is a composite key.
(Gray) Local button is used to switch local and remote mode.

IT8500 USER MANUAL
User Manual
20
(Gray-white) Power on button
0
～
9
Enter the digits 0 to 9.
Decimal point
ESC
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
2.6 Combination keys
Press (Shift) button first and then other keys to achieve all kinds functions in the
following table.
+1(Short) Turn short circuit on or off.
+2(Tran) Start or stop transient condition.
+3(List) Set LIST operation parameters.
+4(Save) Store the DC Load state in non-volatile memory.
+5(Battery) Turn on or off battery testing function.
+6(Prog) Enter auto tese function.
+7(Info) Display product’s Model/SN/Version.
+8(System) System menu setting
+9(Config) Configure menu setting
+0(Pause) Press this button if you need a pause when runing an auto test
file.
+(Trigger) Cause an immediate trigger.
+CC(OCP) Enter OCP test function.
+CV(Setup) Set detailed parameters in CC/CV/CW/CRmode.
+CW(OPP) Enter OPP test function.
+Enter(Recall) Recall the DC Load state from non-volatile memory.
+On/Off(Lock) Key lock function