Description of Fault Codes
‑46‑
Cause
Confirming Method
Solution
The servo drive fails to
receive the data fed back by
the encoder in three
consecutive cycles.
1. Check bit12 of H0b.30.
2. The encoder cable is
connected improperly.
3. The encoder cable is
connected loosely.
4. The encoder cable is too
long.
5. The encoder
communication is being
disturbed.
6. The encoder is faulty.
1. Check whether the motor
model is correct.
2. Check whether the
encoder cable is proper.
3. Check whether the
encoder version (H00.04)
is set properly.
4. The servo drive operates
improperly. Replace it.
● E208.4: FPGA current loop operation timeout
Cause:
The operating time of the current loop exceeds the interval threshold.
Cause
Confirming Method
Solution
FPGA operation timeout
Internal fault code H0b.45 =
4208: Current loop operation
timeout
Disable some unnecessary
functions to reduce the
operating load of the current
loop.
● E210.0: Short‑to‑ground detection error
Cause:
An abnormal motor phase current or bus voltage is detected during power‑on self‑
testing.
■ The DC bus voltage exceeds the braking threshold.
■ The phase U current of size C/D/E models is greater than 1/4 of H01.07.
■ Overcurrent occurs on phase‑P and phase‑N of servo drives in SIZE A and B.
Cause
Confirming Method
Solution
1. The servo drive power
cables (U/V/W) are short‑
circuited to ground.
Disconnect the motor cables
and measure whether the
servo drive power cables (U/
V/W) are short‑circuited to
ground (PE).
Connect the cables again or
replace the servo drive
power cables.
2. The motor is short‑
circuited to ground.
After confirming the servo
drive power cables and
motor cables are connected
properly, measure whether
the insulation resistance
between the servo drive U/
V/W side and the PE cable is
at MΩ level.
Replace the motor.
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