Delta MH300 Series - Page 792

Chapter 14 Fault CodesMH300
14-65
ID No. Display Fault Name Description
63 Over slip error (oSL)
On the basis of the maximum slip limit
set via Pr.
10-
29, the speed deviation is abnormal. When the
motor drive outputs at constant speed, F>H or F<H
exceeds the level set via Pr. 07-
29, and it exceeds
the time set via Pr. 07-
30, oSL shows. oSL occurs
in induction motors only.
Action and Reset
Action condition
Pr. 07-29
100% of Pr. 07-29 = the maximum limit of the slip frequency (Pr. 10-29)
Action time Pr. 07-30
Fault treatment parameter
Pr. 07-31
0: Warn and continue operation
1: Fault and ramp to stop
2: Fault and coast to stop
3: No warning
Reset method
Auto
Pr. 07-31=0 is a warning.
When the motor drive outputs at constant speed, and F>H or
F<H does not exceed the level set via Pr. 07-
29 anymore, oSL
warning will be cleared automatically.
Hand
When Pr. 07-31=1 or 2, oSL
is an error, and it needs to reset
manually.
Reset condition Reset immediately
Record Pr. 07-31=1 or 2, oSL is “Fault”, and will be recorded.
Cause Corrective Actions
Any of the motor parameters in
parameter group 5 may be
incorrect
Check the motor parameters
Overload Decrease the load
Any of the setting value of Pr.
07-29, 07-30, and 10-29 is
improper
Check the setting of oSL protection function related parameters