Chapter 14 Fault Codes | VFD-ED
ID
No.*
Display on
KPED-LE01
Display on KPC-CC01 Descriptions
84
W-phase output phase loss
corrective action
1. Unbalanced three-phase impedance of the motor. Replace the
motor.
2. Check if the motor wiring is incorrect.
3. Check if a single-phase motor is used.
4. Check if the current sensor is broken.
5. Check if temporary power supply is used or any grounding fault.
6. Make sure the capacity of the drive matches the motor.
86
Leveling switch short-circuited
When elevator runs downward, LD signal will be inactive. When
elevator runs upward, LU signal will be inactive. When elevator is
running, there will be signal active for LU and LD whenever passing
through each floor. If not so, this fault code will be triggered.
corrective action
Check if the action of leveling switch (LU/LD) is normal.
87
Leveling switch open-circuited
When elevator executes leveling, either LU or LD is open-circuited
or both are open-circuited, this fault code will be triggered.
corrective action
Check if the action of leveling switch (LU/LD) is normal.
94
BTTx Fail
Brake torque test failed
corrective action
1. Minimum output torque ratio allowed during brake torque test
(Pr.07-36) is too large. Adjust Pr.07-36 Minimum Output
Torque Ratio Allowed during Brake Torque Test
2. Mechanical brake clamping force is insufficient. Adjust or
replace the mechanical brake.
95
BTTx Error
Brake torque test action error
corrective action
Poor wiring connection. Check MI terminal wiring (FWD, REV, and
MI=57).
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