Delta VFD2A8MS21ANSAA

Chapter 13 Warning CodesMS300
492
ID No.
Display on LCD Keypad
Warning Name
Description
24
Over slip warning
(oSL)
Over slip warning.
By using the maximum slip (Pr.10-29) as the base,
when the drive outputs at constant speed, and the F >
H or F < H exceeds Pr.07-29 condition and Pr.07-30
setting time, 100% Pr.07-29 = Pr.10-29.
Action and Reset
Action Condition
When the drive outputs at constant speed, and F > H or F < H exceeds the
Pr.07-29 condition
Action Time
Pr.07-30
Warning Setting Parameter
Pr.07-31 = 0 Warning
0: Warn and continue operation
1: Fault and ramp to stop
2: Fault and coast to stop
3: No warning
Reset Method
When Pr.07-31 = 0 and when the drive outputs at constant speed, and F > H or
F < H no longer exceeds the Pr.07-29 condition, the oSL warning automatically
clears.
Reset Condition
N/A
Record
N/A
Cause
Corrective Actions
Check if the motor parameter is
correct
Check the motor parameter.
The load is too large
Decrease the loading.
Check if the settings for Pr.07-29,
Pr.07-30 and Pr.10-29 are properly
set
Check the parameter settings for oSL protection.