Quick Start
Copyright © Itech Electronic Co., Ltd. 18
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.
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.
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 latest 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 the power voltage setting of the electronic load is larger
than the power supply voltage. If the power voltage of the load is set to
220V and the supply voltage is 110V, the electronic load will not start.
4. Check whether the fuse of electronic load 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.
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