YASKAWA GPD 505/P5 - OS Overspeed Det; PGO PG Open

PP.P5G5.03.Troubleshoot
Page 11
Rev. 06/11/2003
The motor speed has exceeded the overspeed level
when operating in the Closed Loop V/f or Closed
Loop Flux Vector modes.
OS
Overspeed Det
N/A
Feedback pulses are not received by the PG option
board.
PGO
PG open
N/A
Possible Cause(s): The load has changed considerably, the program settings may not be
set correctly.
Corrective Action: Check the load on the motor, verify the program settings (F1-08 PG
Overspeed Level, and F1-09 PG Overspeed Time).
Possible Cause(s): The Pulse Generator feedback wires may be broken or not properly
connected to the PG feedback option board.
Corrective Action: Check for a broken wire or a loose connection from the Pulse
Generator, verify the program settings.
505
Fault Codes
Major Fault - Motor coasts to a stop, the fault is displayed on the digital
operator, and the fault relay is activated.
506 515 √
505
506 515 √