Fault codes, Major fault – Yaskawa GPD 506/P5 Section Three User Manual
Page 4
PP.P5G5.03.Troubleshoot
Page 4
Rev. 06/11/2003
506
√
515
√
505
Undervoltage of the main circuit when running.
230V Units - trip point 190V DC or less.
460V Units - trip point 380V DC or less.
600V Units - trip point 546V DC or less.
UV1
DC Bus Undervolt
U
u
1
Undervoltage of the control circuit when running.
230V Units - 30kW ~ 75kW, monitors the (-15V)
power supply.
460V Units - 55kW ~ 160kW, monitors the (-15V)
power supply.
UV2
CTL PS Undervolt
U
u
2
Possible Cause(s):
Single phase condition on the input, low input voltage at L1, L2, and L3.
Corrective Action:
Check the three phase input voltage, verify L2-05 for 515/G5 units.
Possible Cause(s):
External load connected pulling down the inverter power supplies.
Corrective Action:
Repair or replace the power/gate drive board.
Fault Codes
Major Fault
- Motor coasts to a stop, the fault is displayed on the digital
operator, and the fault relay is activated.