YASKAWA A1000 Installation Manual page 28

Incorrect speed feedback scaling
when terminal RP is used as
speed feedback input in V/f
control.
Incorrect PG pulse number set.
Inappropriate parameter settings.
Digital Operator Display
PGo
Cause
PG cable is disconnected.
PG cable wiring is wrong.
PG encoder does not have
enough power.
Brake is holding the PG.
Digital Operator Display
PGoH
Cause
PG cable is disconnected.
YASKAWA ELECTRIC TOBP C730600 37B 1000-Series Option PG-X3 Installation Manual
• Set H6-02 to the value of the speed feedback signal frequency when the motor
runs at the maximum speed.
• Adjust the input signal using parameters H6-03 through H6-05.
Check and correct parameter F1-01.
Check the setting for the overspeed detection level and the overspeed detection
time (F1-08 and F1-09).
PG Disconnected
Detected when no PG pulses received for a time longer than setting in F1-14.
Reconnect the cable.
Correct the wiring.
Make sure the correct power supply is properly connected to the PG encoder.
Ensure the brake releases properly.
PG Hardware Fault
PG cable is disconnected.
Reconnect the cable.
7 Troubleshooting
Fault Name
Possible Solution
Fault Name
Possible Solution
29