YASKAWA GPD 505/P5 - CF out of Control; SVE Zero Servo Fault

PP.P5G5.03.Troubleshoot
Page 13
Rev. 06/11/2003
The actual torque during deceleration has reached
the regen torque limit for more than 3 seconds.
(Open Loop Flux Vector mode only)
CF
Out of Control
N/A
In the zero servo mode, the motor shaft has
rotated 10,000 non-quadrature PG pulses from the
home position.
SVE
Zero Servo Fault
N/A
Possible Cause(s): The regen torque limit value is set too low, load torque is excessively
large.
Corrective Action: Verify the program setting, L7-03 forward regen torque limit and L7-04
reverse regen torque limit, extend the deceleration time.
Possible Cause(s): Torque limit or zero servo gain set too low, load torque excessively
large, PG signal noise.
Corrective Action: Verify the program parameters B9-01 zero servo gain and torque limit
settings L7-01 ~ L7-02, check for noise on the PG signals.
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 √