Operating Instructions

Warning Codes
Digital Keypad RT-KEYPAD
278 | 443
Cause
Corrective Actions
Unbalanced three-phase impedance of
the motor
Replace the motor.
Check if the wiring is incorrect
Check the cable.
Replace the cable.
Check if the motor is a single-phase motor
Choose a three-phase motor.
Check if the current sensor is broken
Check if the control board cable is loose. If yes, reconnect the cable and run the drive to test. If
the error still occurs, return to the factory for repair.
Check if the three-phase current is balanced with a current clamp meter. If the current is balanced
and the oPHL error still shows on the display, return to the factory for repair.
Check if capacity of the drive is larger than
the motor
Choose a drive’s capacity that matches the motor’s.
ID No.
Display on LCD Keypad
Warning Name
Description
30
Copy model error 3 (SE3)
Keypad COPY error 3: copy model error
Action and Reset
Action level
“SE3” warning occurs when different drive identity codes are found during copying parameters.
Action time
Immediately act when the error is detected
Warning setting parameter
N/A
Reset method
Manual reset
Reset condition
N/A
Record
N/A
Cause
Corrective Actions
Keypad copy between different power
range drives
It is mainly to prevent parameter copies between different HP/models.
ID No.
Display on LCD Keypad
Warning Name
Description
31
Over-torque
(ot3)
Over-torque 3 warning
Action and Reset
Action level
Pr.14-75
Action time
Pr.14-76
Warning setting parameter
Pr.14-74 Over-torque Detection Selection (Motor 3) =1 or 3
0: No function
1: Continue operation after over-torque detection during constant speed operation
2: Stop after over-torque detection during constant speed operation
3: Continue operation after over-torque detection during RUN
4: Stop after over-torque detection during RUN
Reset method
When the output current < Pr.14-75, the Ot3 warning automatically clears
Reset condition
When the output current < Pr.14-75, the Ot3 warning automatically clears