Description of Fault Codes
‑84‑
● EB02.0: Excessive position deviation in fully closed‑loop mode
Cause:
The absolute value of position deviation in fully closed‑loop mode exceeds the
value of H0F.08 (Excessive position deviation threshold in fully closed‑loop mode).
Cause
Confirming Method
Solution
1. U/V/W output phase loss
or incorrect phase sequence
occurs on the servo drive.
Perform a no‑load trial run
on the motor and check the
wiring.
Connect cables again
according to the correct
wiring diagram or replace
the cables.
2. The servo drive U/V/W
cables or the encoder cable
is disconnected.
Check the wiring.
Connect the cables again.
The servo drive power
cables must be connected in
the correct order at both
ends. Replace with new
cables if necessary and
ensure cables are connected
properly.
3. 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.
Eliminate the mechanical
factors.
4. The gain values are too
low.
Check the position loop gain
and speed loop gain of the
servo drive.
1st gain set: H08.00...H08.02
2nd gain set: H08.03...H08.05
Adjust the gain values
manually or use gain auto‑
tuning.
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