Operating Instructions

Warning Codes
Digital Keypad RT-KEYPAD
272 | 443
Cause
Corrective Actions
Improper parameter setting for the slip
error
Reset proper value for Pr.10-13 and Pr.10-14.
Improper setting for ASR parameter and
acceleration/ deceleration
Reset ASR parameters.
Set proper accel./ decel. time.
Accel./ Decel. time is too short
Reset proper accel./ decel. time.
Motor locked
Remove the causes of motor locked.
Mechanical brake is not released
Check the action timing of the system.
Incorrect parameter setting of torque limit
(Pr.06-12, Pr.11-17–20)
Adjust to proper setting value.
Malfunction caused by interference
Verify the wiring of the control circuit, and the wiring/grounding of the main circuit to prevent
interference.
ID No.
Display on LCD Keypad
Warning Name
Description
19
Phase loss
(PHL)
Input phase loss warning
Action and Reset
Action level
One of the phases outputs less than Pr.06-47
Action time
Pr.06-46
Warning setting parameter
Pr.06-45 Output Phase Loss Detection Action (OPHL) =0
0: Warn and continue operation
Reset method
Warning automatically clears when the drive stops
Reset condition
After the drive stops
Record
N/A
Cause
Corrective Actions
Phase loss of the input power
Verify the wiring of the main circuit.
Single phase power input on a three-
phase model
Use the model with voltage that matches the power.
The power voltage has changed
If the power of main circuit works well, check if the MC of the main circuit is broken.
Cycle the power after verifying the power is normal. If PHL still occurs, return to the factory for
repair.
Loose wiring terminal of input power
Tighten the terminal screws with the torque listed in the user manual.
Check if the input cable of three-phase
power is broken
Ensure the wiring is correct.
Replace the broken part of the cable.
Unbalanced three-phase of the input
power
Check the status of three-phase power.