Yaskawa GPD 506/P5 Section Three - Manual (Page 26)

PP.P5G5.03.Troubleshoot
Page 26
Rev. 06/11/2003
Fault Codes
Minor Fault
- Operation continues and the digital operator indication blink
The fault relay does not activate.
The main circuit or control circuit voltage has fallen
below the under voltage trip point momentarily.
A minor fault contact output can be programmed by
using the multi-function outputs. (GPD515/G5 only)
UV
DC Bus Undervolt
U
u
The DC bus voltage has exceeded the overvoltage
trip point while the inverter output is off. OV
DC Bus Overvolt
ou
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 setting of L2-05 for GPD515/G5
Possible Cause(s): High input voltage at L1, L2, and L3. 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 power factor correction capacitors.
505 506
√
515
√