PG Open Circuit
Yaskawa · F7 Drive Programming
What does PGO mean?
This fault occurs when an open circuit condition is detected in the Pulse Generator (PG) feedback. This means the drive is not receiving proper speed or position feedback from the motor's encoder. This can lead to uncontrolled motor speed, position errors, or loss of precise control if left unaddressed.
Complete Troubleshooting Guide
- 1
Inspect all wiring connections between the encoder (PG) and the drive, checking for breaks, loose terminals, or physical damage to the cables.
- 2
Verify the encoder's power supply and signal integrity, ensuring it is powered correctly and outputting valid pulses.
- 3
Check the encoder for mechanical damage or misalignment that could prevent accurate feedback.
- 4
Review parameter F1-02 to ensure the chosen stopping method (Ramp to stop, Coast to stop, Fast-Stop, Alarm Only) is appropriate for the application in case of a PGO fault.