Omron Q2V Series User Manual

Troubleshooting
7
7.4 Faults
SIEPCYEUOQ2V01A Q2V Technical Manual 237
Code Name Causes Possible Solutions
The relay or contactor on the soft-charge bypass
relay is damaged.
U4-06 [SoftChgRelay Maint] shows the performance life of the
soft-charge bypass relay. If U4-06 is more than 90%, replace the
board or the drive. For information about replacing the board,
contact the manufacturer or your nearest sales representative.
Note:
• The drive detects this error if the DC bus voltage decreases below the level set in L2-05 [UV Detection Lvl (Uv1)] while the drive is running.
• The Uv1 detection level is approximately 190 V for a 200 V class drives. The detection level is approximately 380 V for 400 V class drives. The detection level is
approximately 350 V when E1-01 [Input AC Supply Voltage] < 400.
• Do a Fault Reset to clear the fault.
• Fault trace is not available for this fault.
• L5-08 [U/OV,OH,GF A-Reset Select] disables the Auto Restart function.
Code Name Causes Possible Solutions
Uv2 Control Power Undervoltage
The value set in L2-02 [RideThrough Time@Power
Loss] increased and the momentary power loss
recovery unit is not connected to the drive.
Connect the momentary power loss recovery unit to the drive.
There was a problem with the drive hardware. • Re-energize the drive.
• If the fault stays, replace the control board or the drive. For
information about replacing the control board, contact the
manufacturer or your nearest sales representative.
Note:
• The drive detects this error if the control power supply voltage decreases.
• Do a Fault Reset to clear the fault.
• Fault trace is not available for this fault.
Code Name Causes Possible Solutions
Uv3 Soft Charge Answerback Fault
The relay or contactor on the soft-charge bypass
relay is damaged.
• Re-energize the drive.
• If the fault stays, replace the control board or the drive.
• Check monitor U4-06 [SoftChgRelay Maint] shows the
performance life of the soft-charge bypass relay. If U4-06 is
more than 90%, replace the board or the drive. For information
about replacing the control board, contact the manufacturer or
your nearest sales representative.
Note:
• Do a Fault Reset to clear the fault.
• Fault trace is not available for these faults.

Omron Q2V Series Specifications

General

Brand	Omron
Model	Q2V Series
Category	Inverter
Language	English