Operating Instructions

Warning Codes
Digital Keypad RT-KEYPAD
277 | 443
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 LCD 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.
ID No.
Display on LCD Keypad
Warning Name
Description
28
Output phase loss (oPHL)
Output phase loss of the drive
Action and Reset
Action level
Pr.06-47
Action time
N/A
Warning setting parameter
Pr.06-45
0: Warn and continue operation
1: Fault and ramp to stop
2: Fault and coast to stop
3: No warning
Reset method
If Pr.06-45 is set to 0, the oPHL warning automatically clears after the drive stops.
Reset condition
N/A
Record
N/A