YASKAWA 1000 Series Installation Manual page 32

7 Troubleshooting
Incorrect speed feedback scaling
when terminal RP is used as
speed feedback input in V/f
control.
Incorrect PG encoder pulse
number set.
Inappropriate parameter settings.
Digital Operator Display
PGo
Cause
PG encoder cable is
disconnected.
PG encoder wiring is incorrect.
PG encoder does not have
enough power.
Brake control sequence is
incorrect.
Digital Operator Display
PGoH
Cause
PG encoder cable is
disconnected.
32
• 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 Encoder Disconnected
Detected when no PG encoder pulses have been received for a time longer than is
set to F1-14.
Reconnect the cable.
Correct the wiring.
Make sure the correct power supply is properly connected to the PG encoder.
Correct the brake control sequence and verify that the brake has been released.
PG Encoder Hardware Fault
PG encoder cable is disconnected.
Reconnect the cable.
YASKAWA ELECTRIC TOBP C730600 52D 1000-Series Option PG-E3 Installation Manual
Fault Name
Possible Solution
Fault Name
Possible Solution