YASKAWA GA800 Series, Техническое обслуживание и устранение неисправностей

Страница: 112 / 566

2.4 Fault
112 YASKAWA TOEPYAIGA8001B GA800 Drive Maintenance & Troubleshooting
Code Name Causes Possible Solutions
UL5 Mechanical Weakening Detection 2
The drive detected undertorque as specified by the
conditions for mechanical weakening detection set in
L6-08 [Mechanical Fatigue Detect Select] .
Examine the machine for deterioration.
Note:
•
Do a Fault Reset to clear the fault.
•
If the drive detects this error, it will operate the motor as specified by the Stopping Method set in L6-08 .
Code Name Causes Possible Solutions
Uv1 DC Bus Undervoltage There is a phase loss in the drive input power. Correct errors with the wiring for main circuit drive input power.
There is loose wiring in the drive input power
terminals. Tighten the terminal screws to the correct tightening torque.
The drive input power voltage is changing too much. • Examine the input power for problems.
• Make the drive input power stable.
• If the input power supply is good, examine the magnetic
contactor on the main circuit side for problems.
There was a loss of power. Use a better power supply.
The main circuit capacitors have become
unserviceable. Examine the capacitor maintenance time in monitor U4-05
[CapacitorMaintenance] . If U4-05 is more than 90%, replace the
control board or the drive. For information about replacing the
control board, contact Yaskawa or your nearest sales representative.
The relay or contactor on the soft-charge bypass relay
is damaged. U4-06 [PreChargeRelayMainte] 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 Yaskawa or your nearest sales representative.
Note:
•
The drive detects this error if the DC bus voltage decreases below the level set in L2-05 [Undervoltage 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 [Fault Reset Enable Select Grp2] disables the Auto Restart function.
Code Name Causes Possible Solutions
Uv2 Control Power Undervoltage
The value set in L2-02 [Power Loss Ride Through
Time] 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 Yaskawa
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 [PreChargeRelayMainte] 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 Yaskawa or your
nearest sales representative.
Note:
• Do a Fault Reset to clear the fault.
• Fault trace is not available for these faults.