Description of Fault Codes
‑62‑
Cause
Confirming Method
Solution
1. FPGA internal speed
overflows.
Check whether the servo
drive power cables are
connected in the correct
sequence at both ends.
Connect the U/V/W cables in
the correct phase sequence.
2. The motor speed
overshoots.
Check in the software tool
whether the speed feedback
exceeds the overspeed
threshold.
Adjust the gains or
mechanical operating
conditions.
● E500.2: Velocity feedback error 2
Cause
Confirming Method
Solution
Communication error
occurred between boards of
the drive.
The alarm persists in spite of
repeated power off and on.
Replace the servo drive.
● E602.0: Angle auto‑tuning error
Cause:
Unusual jitter occurs on the encoder feedback during angle auto‑tuning.
Cause
Confirming Method
Solution
The data fed back by the
encoder is abnormal.
Check if the encoder
communication is being
disturbed.
Check the wiring of the
encoder.
● E602.2: Wrong UVW phase sequence detected during angle auto‑tuning
Cause:
A wrong U/V/W phase sequence is detected during angle auto‑tuning.
Cause
Confirming Method
Solution
Incorrect UVW wiring is
detected during angle auto‑
tuning.
Check whether U/V/W
phases are wired correctly.
Exchange cables of any two
phases among U/V/W and
perform auto‑tuning again.
● E605.0: Bootstrap overspeed
Cause:
The motor speed exceeds the rated speed when the servo drive in size A/B is
switched on.
Cause
Confirming Method
Solution
The motor speed exceeds
the rated speed when the
servo drive is switched on.
Check if the drive is enabled
when the motor has been
driven.
Switch on the drive when
the motor is standstill.
● E620.0: Motor overload
Cause:
The accumulative heat of the motor reaches the fault threshold.
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