Description of Fault Codes
‑48‑
Cause
Confirming Method
Solution
3. Overcurrent occurs on the
regenerative resistor.
Check whether resistance of
the external regenerative
resistor is too small or the
regenerative resistor is
short‑circuited (between
terminals P⊕ and C).
Replace with a regenerative
resistor of matching
resistance. Perform wiring
again.
4. The servo drive is faulty.
Switch off the S‑ON signal
and rotate the motor shaft
manually. Check whether
the value of H0b.17
(Electrical angle) changes as
motor shaft rotates.
Disconnect the motor cable
but the fault persists after
the servo drive is powered
off and on again.
Replace the servo drive.
● E208.2: Encoder communication timeout
Cause:
Cause
Confirming Method
Solution
The servo drive fails to
receive the data fed back by
the encoder in three
consecutive cycles.
Check bit12 of H0b.30.
The encoder is wired
incorrectly.
The encoder cable is
loosened.
The encoder cable is too
long.
The encoder communication
suffers from interference.
The encoder is faulty.
1. Check whether the motor
model is correct.
2. Check the condition of the
encoder cable.
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: Output short‑circuited to ground
Cause:
An abnormal motor phase current or bus voltage is detected during power‑on self‑
testing.
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