I-Tech IT8211 Bedienungsanleitung

Digital Control Electronic load

User ’s Manual

IT8211

Safety Regulations

To avoid electrical shock, do not open the cabinet. Refer only to

qualified personnel for service.

To avoid injuries, always disconnect power, discharge circuits,

and remove external voltage sources before touching

components.

KEEP AWAY FROM LIVE CIRCUITS.

We cannot accept responsibility for any direct or indirect

financial damage or loss of profit that might occur when using

the electronic load.

The instrument chassis and cover must be connected to an

electrical ground.

WARNING

We certify that this product met its published specifications at

time of shipment from the factory.

Certification

Notice The information contained in this document is subject to change

without notice.

This hardware product is warranted against defects in material

and workmanship for a period of ONE year from date of delivery.

IT8211 Electronic load for use with a hardware product and when

properly installed on that hardware product, are warranted not to

fail to execute their programming instructions due to defects in

material and workmanship for a period of 90 days from date of

delivery. During the warranty period our company will either

repair or replace products which proved 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 by (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.

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.

Limitation of Warranty

Compliance Statements

The ITECH products you have purchased is subject to

Directive 2002/96/EC of the European Parliament and the

Council of the European Union on waste electrical and

electronic equipment (WEEE) , and in jurisdictions adopting

that Directive, is marked as being put on the market after

August 13, 2005, and should not be disposed of as unsorted

municipal waste. Please utilize your local WEEE collection

facilities in the disposition of this product and otherwise

observe all applicable requirements.

Disposal of Old Electrical & Electronic Equipment (Applicable in

the European Union and other European countries with separate

collection systems)

Connect it to safety earth ground using the wire recommended in

the user’s manual.

High voltage danger

The symbol on an instrument indicates that the user should refer

to the operating instructions located in the manual.

Safety Symbols

About IT8211

IT8211 digital control electronic load (60V/30A/ 150W)

High resolution and accuracy: 10mV/1mA, CV / CC/ CR work

mode, short-test function, friendly interface, storage for 4*100

sets preset value. All these help you to achieve different

complex test purpose easily。

CC work mode

ConstantCurrent

時

為幾伏特

,ITECH

來吸取電流

Constant current

Whenthe load works in

CV mode, it will consume

enough current to control

power supply under test,

and achieve your preset

value

Constant voltage

CV work mode

CR work mode

Whenthe load works in

CR mode, it will

consume the current

that linear proportionate

to input voltage

Constant

Constant resistance

Attribute

Whenthe load works in

CC mode, it will absorb

the current what you set

Digital control electronic load

Full range 10mV /1mA resolution

Very small size

Highlight LED display

Working mode: CC/CV/CR

Very competitive price

Input on/off control

High reliability, OC/OV/OP/ protection

Storage for 4*40 sets preset value

Easily operated

Programmable LIST mode: 25*4 sets

3/30A selector（shift)

Shift button

Main power on/off

Air flow input

Input on/off button

Switch +shortcut C

Left arrow +shortcut A

Memory save (shift)

Current value

Stepping value D + memory D

Stepping value C + memory C

Stepping value A + memory A

Stepping value B + memory B

Voltage value

CV mode indicator

Short indicator

CC mode indicator

CR mode indicator

Recall indicator

Selector indicator

Shift indicator

Input off indicator

Right arrow + memory B

Rotary encoder

Input +

Input -

Recall (shift)

Function setup (shift)

Mode selector + memory D

Voltage setup indicator

Current setup indicator

Setup indicator

Short on/off

Panel layout

Quick Start

This instrument is carefully inspected before shipment. Upon receipt, please inspect the

instrument for damage that might occurred in transit, if any sign of damage, please

contact the vendor.

Work voltage of load has two type: 110V AC or 220V AC. Please switch the correct line

voltage accordance to the voltage in you area by toggle the switch on the rear panel

If the above 2 points are right, please power on the electronic load.

Check out

Press key to turn on the CC

light, and now the load work in CC

mode, you can set current value.

For example, press key,

move the cursor to the position

n ,screw the knob ,the current

value will rise or decline1A. After

setting value, press key to

make load start to work.

Preset cursor

IT8211 60V/30A/150W

DC Electronic Load Prog CC

Short CV

OFF Shift

30A CR

ITECH

ABCD

Step cursor B

IT8211 60V/30A/150W

DC Electronic Load Prog CC

Short CV

OFF Shift

30A CR

ITECH

ABCD

Preset voltage

Step cursor A

IT8211 60V/30A/150W

DC Electronic Load Prog CC

Short CV

OFF Shift

30A CR

ITECH

ABCD

Press key to turn on the CV

light, and now the load work in CV

mode, you can set voltage value.

For example, press key ,

move the cursor to the position

n ,screw the knob ,the voltage

value will rise or decline1V. After

setting value, press key to make

load start to work.

Voltage set

Mode

On/OffOn/Off

Press key to turn on the CR

light, and now the load work in CR

mode, you can set resistance value.

For example, press key ,

move the cursor to the position,

screw the knob ,the voltage value

will rise or decline. After setting value,

press key to make the load start to

work.

Resistance set

Mode

On/OffOn/Off

current set

Mode

On/OffOn/Off

Input on/off

Press key at the front panel

to toggle the input on/off. Disable t

the input (zero current) does not

affect the programmed setting. The

input will return to the previously

programmed values when the input

is enabled again.

IT8211 60V/30A/150W

DC Electronic Load Prog CC

Short CV

OFF Shift

30A CR

ITECH

ABCD

OCP function

IT8211 60V/30A/150W

DC Electronic Load Prog CC

Short CV

OFF Shift

30A CR

ITECH

ABCD

The input of electronic load will be

turned off automatically if the OCP value

is less than the actual current value.

Default OCP setting is 30A,

NOTE

Press key, and then press

(Setup) key, OCP LED will be lit.

Use key and knob to

set OCP value.

ShiftShift

View

view function

The electronic load usually display

the actual voltage and current value,

and then press key ,the light

will change V to SV, the load display

the preset voltage, current or

resistance value and the actual power,

and press key, it will be back

to show an actual value.

View

After setting REL, Press to enter

the BEEP setting. Use the knob

to turn the knob sound ON or OFF.

IT8211 60V/30A/150W

DC Electronic Load Prog CC

Short CV

OFF Shift

30A CR

ITECH

ABCD

On/Off

Key sound (BEEP)

IT8211 60V/30A/150W

DC Electronic Load Prog CC

Short CV

OFF Shift

30A CR

ITECH

ABCD

After setting OCP, press to enter

the REL setting, use the knob to

select ON/OFF. ON means the REL

function is turn on; OFF means the REL

function is turn off. Press to

confirm.

Real-time reveal (REL)

View

Set address (ADD)

After setting BEEP, Press to

enter the ADD setting, use the cursor

key and the knob to

enter address to store settings. ADD

range: 0~31，press to confirm.

IT8211 60V/30A/150W

DC Electronic Load Prog CC

Short CV

OFF Shift

30A CR

ITECH

ABCD

Set group (GRP)

After setting the OCP value, press

key to enter GRP setting, use the

cursor key and the knob

to select store group. There are 40

groups to be selected, each group

can store 4 group current , voltage

or resistance values. Press

key to confirm and exit setup mode.

View

Store Operation

After the voltage or current value has been set, press and (Save) key, the

cursor will wink together. Choose or or or key to

save the preset value.

ShiftShift

View

Mode

ABCD

IT8211 60V/30A/150W

DC Electronic Load Prog CC

Short CV

OFF Shift

30A CR

ITECH

ABCD

Recall Operation

Current range switch (3/30 A)

Short-circuit operation

IT8211 loads can simulate a short circuit at its input by turning the load on with,

full-scale current. The short circuit can be toggled on/off at the front panel using

the + . Short operation does not infect the operation setting current value,

when short operation is in off state ,load back to the original setting state.

The actual value of the electronic short is dependent on the mode and current

range that are active when the short is turned on. In CC,CW and CR mode, the

max short-circuit current value is 1.2 time of the current range. In CV mode,

short-circuit operation is same as the operation of setting CV to 0V.

ShiftShift

On/OffOn/Off

Check and reset the voltage ,current and resistance value

The electronic load usually display the actual voltage and current value. If you

want to check or reset the preset voltage, current and resistance value, screw

Knob or press or key, the bright will change V to SV . The preset on

the LED will wink for 3 second. If not reset a value ,it will recover to show an

actual value.

Press and (Prog) key, will be lighted up,that means you can recall

the parameter from the store group. Chose or or or key to

recall the parameter which has been saved.

When the electronic load is on recall operation, keys are

disabled, they only can be used with key. If you want to exit recall function,

please press and (Prog) key.

ShiftShift

Prog

ShiftShift

View

Mode

View

Mode

Press key, then press key, light will be lit, that means current

in high range:30A ,you can set the current from 0 to 30A.

Press key, then press key, light will be turned off. You can set

the current from 0 to 3A .

current resolution in high current range is 10mA, current resolution in low current

range is 1mA.

ShiftShift

30A

ShiftShift

30A

Mode

Trouble shooting hint

If the input is disabled

1. check if the voltage or current preset value is zero, if so, please set the voltage or

current value once again.

2. check if the OCP indicator is lit, if so, set OCP value properly.

LIST function

The function helps you test the features of power supply to be measured when with

different load easily.

Power on IT8211 with pressing the key (Prog) at the same time. The normal function

of all keys are forbidden, only list function are permitted.

Press and keys to enter the list edit menu:

STEP allow you to choose and edit the step you want, range: 0-99;

TYPE allow you to choose the working mode (1/2/3, which is corresponded to CC/CV/CR

mode);

DATAallow you set the mode value, e.g. you set TYPE as 1(CC mode), so the value to be

set here is current value;

DT is the delay time, range; 0.4S-25S;

HV set the up limit of the input voltage;

LV set the low limit of the input voltage;

HA set the up limit of the input current;

LA set the low limit of the input current.

The menu is set in cycle, enter the next step setting directly. Press + to

exit (the present step won’t be saved ).

NOTE: the unit saves the list file in four group automatically: 0-24 steps in A key, 25-

49 steps in B key, 50-74 steps in C key, 75-99 steps in D key. Set the last step

CC/0A if the total steps is less than 25. if you press A key, it will run from step 0,

if you press B key, it will run from step 25, if you press C key, it will run from 50,

if you press D key, it will run from step 75.

IT8211 60V/30A/150W

DC Electronic Load Prog CC

Short CV

OFF Shift

30A CR

ITECH

ABCD

Operation:

Press power on button + key to power

on the unit and enter the LIST mode.

Press + to enter list edit menu.

Use the cursor keys and the Knob

to set the step.

ShiftShift

View

ShiftShift

View

ShiftShift

View

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