Delta MS300 Series User Manual page 606

ID Display on LCD Keypad
63
Action Condition
Action Time
Fault Treatment Parameter
Reset Method
Reset Condition
Record
Cause
Any of the motor parameters in
parameter group 5 may be
incorrect
Overload
Any of the setting value of Pr.07-
29, 07-30, and 10-29 is improper
Fault Name
Over slip error
(oSL)
Action and Reset
Pr.07-29
100% of Pr.07-29 = the maximum limit of the slip frequency (Pr.10-29)
Pr.07-30
Pr.07-31
0: Warn and continue operation
1: Fault and ramp to stop
2: Fault and coast to stop
3: No warning
Pr.07-31 = 0 is a warning.
When the motor drive outputs at constant speed, and F>H or F<H
Auto
does not exceed the level set via Pr.07-29 anymore, oSL warning will
be cleared automatically.
When Pr.07-31 = 1 or 2, oSL is an error, and it needs to reset
Hand
manually.
Immediately reset
Pr.07-31 = 1 or 2, oSL is "Fault", and the fault is recorded.
Check the motor parameters
Decrease the load
Check the setting of oSL protection function related parameters
597
Fault Descriptions
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.
Corrective Actions
Chapter 14 Fault CodesMS300