Delta VFD750C43A-HS - Page 526

Chapter 13 Warning CodesC2000-HS
13-14
ID No. Display on LCM 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 level and Pr. 07-30 setting
time, 100% Pr. 07-29 = Pr. 10-29.
Action and Reset
Action level
When the drive outputs at constant speed, and F>H or F<H exceeds the Pr.
07-29 level
Action time Pr. 07-30
Warning setting parameter
Pr. 07-31=0 Warning
0: Warn and keep operation
1: Warn and ramp to stop
2: Warn 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 level, 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.
ID No. Display on LCM Keypad Warning Name Description
25
Auto tuning
(tUn)
Parameter auto-tuning is processing.
When running auto-tuning, the keypad displays “tUn”.
Action and Reset
Action level
When running Pr. 05-00 motor parameter auto-tuning, the keypad displays
“tUn”.
Action time N/A
Warning setting parameter N/A
Reset method
When auto-tuning is finished and no error occurs, the warning automatically
clears.
Reset condition When auto-tuning is finished and no error occurs.
Record N/A
Cause Corrective Actions
The motor parameter is running
auto-tuning
When the auto-tuning is finished, the warning automatically clears.