Description of Fault Codes
‑62‑
Cause
Confirming Method
Solution
3. The communication
commands are being
disturbed.
Check whether jitter occurs
on the commands sent from
the host controller and
whether EtherCAT
communication is being
disturbed.
Check whether the
communication line
between the host controller
and the servo drive is being
disturbed.
4. The motor is stalled due
to mechanical factors.
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.
Check the current feedback
(torque reference)
waveform.
Check whether any
mechanical part gets stuck
or eccentric.
Note
When E620.0 occurs, stop the servo drive for at least 30s before further operations.
● E631.1: Motor brake fault
Cause:
The brake circuit is faulty.
Cause
Confirming Method
Solution
When the brake feature is
used, the 24 V power supply
or brake is not connected.
Check whether 24 V power
supply or the brake is not
connected when H02.16 is
set to 1.
1. Turn off the brake switch
H02.16.
2. Connect the brake cable
and 24 V power supply
cable.
3. Replace the motor.
● E631.2: P‑MOS open circuit
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