Chapter 14 Fault Codes and DescriptionsC2000 Plus
ID* Display on LCD Keypad Fault Name Fault Descriptions
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 <
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
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