Description of Fault Codes
‑64‑
Cause
Confirming Method
Solution
6. The motor is stalled due
to mechanical factors,
resulting in overload during
operation.
Check the reference and
motor speed (H0b.00)
through the software tool or
keypad.
● References in the position
control mode: H0b.13
(Input position reference
counter)
● References in the speed
control mode: H0b.01
(Speed reference)
● References in the torque
control mode: H0b.02
(Internal torque reference)
Check whether the reference
value is not 0 but the motor
speed is 0 rpm in the
corresponding mode.
Eliminate the mechanical
factors.
7. The servo drive is faulty.
The fault persists after the
servo drive is powered off
and on again.
Replace the servo drive.
Note
When E620.0 occurs, stop the servo drive for at least 30s before further operations.
● E625.0: Brake abnormality enabled
Cause
Confirming Method
Solution
The brake fails when it is
released.
Check if the motor shaft end
is held by the brake when
the brake release signal is
active.
1. Check the brake wiring.
2. Replace the Brake motor.
● E626.0: Brake abnormality enabled
Cause
Confirming Method
Solution
The brake fails when it
closes.
Check if the motor shaft end
is not held tightly by the
brake when the braking
signal is active.
1. Check the brake wiring.
2. Replace the Brake motor.
● E630.0: Motor stall
Cause:
The actual motor speed is lower than 10rpm but the torque reference reaches the
limit, and such status lasts for the time defined by H0A.32.
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