Quick Start 
  Copyright ©ITECH Electronics Co., Ltd.  15 
Selftest steps 
Normal selftest procedures:   
1.  Correctly connect the power cord. Press Power key to start up. 
2. 
After selftest, VFD displays the output voltage and current status as below:   
 
 
 
 
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 Failure”    . 
  If the system setting data in EEPROM is lost,the VFD will display “ Main 
frame Initialize Lost”    . 
  If the calibration data in EEPROM is lost, then VFD will display “ Calibration 
Data Lost”    . 
  If the lastest operation data in EEPROM is lost, then VFD will display 
“ Config Data Lost”    . 
  In case of parallel networking fault, networking will be failed and 
“ NETWORKING…”    will be prompted. 
Exception handling 
If the power supply can not start normally, please check as below steps. 
1.  Check whether the power cord is correctly connected and confirm whether 
the power supply is powered. 
Correct wiring of power cord = > 2 
Incorrect wiring of power cord = > Re-connect the power cord and check 
whether the exception is removed. 
2.  Check whether the power turn 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 terminal resistance (plug) of the system bus is correctly 
installed.   
Yes => 4 
No => Please re-install the terminal resistance. For 2U model, insert the 
terminal resistance at any end of the system bus interface. For other 
models, insert the terminal resistance to the bus Input of the first power 
supply system and the bus Output of the last power supply system. Restart 
the power supply to see whether the fault isPress [Esc] key to see whether 
present fault state can be cleared. Or, the user can attempt to clear the fault 
state by restarting the instrument. Do not restart the instrument until it is 
completely powered down. If not, contact ITECH engineer.