Fault codes, Major fault – Yaskawa GPD 506/P5 Section Three User Manual
Page 5
PP.P5G5.03.Troubleshoot
Page 5
Rev. 06/11/2003
The pre-charge contactor opened while the inverter is
running.
UV3
MC Answerback
U
u
3
Overvoltage of the main circuit when running.
230V Units - trip point 400V DC or more.
460V Units - trip point 800V DC or more.
600V Units - trip point 1050V DC or more.
OV
DC Bus Overvolt
ou
This fault only applies to 230V units 18kW ~ 75kW , 460V units 22kW ~ 160kW and
600V units 30kW ~ 160kW .
Possible Cause(s):
Contacts on contactor are dirty, contactor does not function mechanically.
Corrective Action:
Check the contactor, check the ribbon cable from the control board to the
gate drive board.
Possible Cause(s):
High input voltage at L1, L2, and L3. The deceleration time is set too
short. Power factor correction capacitors are being used on the input to the inverter.
Corrective Action:
Check the input circuit, verify the program parameters, add a braking
resistor, remove the power factor correction capacitors.
505
Fault Codes
Major Fault
- Motor coasts to a stop, the fault is displayed on the digital
operator, and the fault relay is activated.
506
√
515
√