Delta MH300 Series - Page 779

Chapter 14 Fault CodesMH300
14-52
ID No. Display Fault Name Description
45
PG slip error
(PGF4)
Under PG mode, when the motor frequency
exceeds encoder observer slip range (Pr. 10-13)
and starts to count, the fault time is longer than
the detection time of encoder observer slip (Pr. 10-
14), PGF4 fault occurs.
Action and Reset
Action condition Pr. 10-13
Action time Pr. 10-14
Fault treatment parameter
Pr. 10-15
0: Warn and keep operation
1: Fault and ramp to stop
2: Fault and coast to stop
Reset method
Auto
When Pr. 10-15=0, PGF4 is a “Warning”,
when the deviation
between output frequency and motor frequency is smaller than
the encoder observer slip range, the
warning is automatically
cleared.
Manual
When Pr. 10-15=1 or 2, PGF4 is a “Fault”.
You must reset
manually.
Reset condition Reset immediately
Record When Pr. 10-15=1 or 2, PGF4 is a “Fault”, and the fault is recorded.
Cause Corrective Actions
Incorrect settings for PG
feedback parameters
Reset correct values for Pr. 10-13 and Pr. 10-14.
Incorrect settings for ASR
parameters and accel. / decel.
time
Reset ASR parameters.
Set correct accel. / decel time.
Incorrect settings of encoder
parameters
Reset encoder parameters (Pr. 10-01).
Accel. / Decel. time is too short Reset proper accel. / decel. time.
Incorrect settings
of torque limit
parameters (Pr. 06-12, Pr. 11-
17–20)
Reset proper setting values for Pr. 06-12 and Pr. 11-17–Pr. 17-20.
Motor shaft lock Remove causes of motor shaft lock.
Mechanical brake is not
released
Check the action sequence of the system.