YASKAWA GPD 505/P5 - PF Input Pha Loss; LF Output Pha Loss

PP.P5G5.03.Troubleshoot
Page 10
Rev. 06/11/2003
Inverter input power supply has an open phase.
Large imbalance of input voltage.
PF
Input Pha Loss
sp1
Inverter output has an open phase.
LF
Output Pha Loss
spo
Possible Cause(s): Open phase on the input of the inverter. Loose terminal screws at
terminals L1, L2, or L3. Program parameters set incorrectly (n083 for 506/P5, L8-05 for 515/G5)
Corrective Action: Tighten the terminal screws, check the input voltage, verify the program
settings.
Possible Cause(s): Open phase on the output of the inverter. Loose terminal screws at
terminals T1, T2, or T3. Program parameters set incorrectly.
Corrective Action: Tighten the terminal screws, check the output voltage, verify the
program settings.
Fault Codes
Major Fault - Motor coasts to a stop, the fault is displayed on the digital
operator, and the fault relay is activated.
505
506 √ 515 √
506 515 √
505