Description of Fault Codes
‑43‑
Cause
Troubleshooting
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.
● E206.0: switching frequency abnormal
Description:
Switching frequency abnormal
Cause
Troubleshooting
Solution
1: Motor control malfunction
This fault persists after the
servo drive is powered off
and on.
Replace the servo drive.
2. The switch‑on times of the
inverting circuit is abnormal.
● E208.2: Encoder communication timeout
Description:
The FPGA detected a communication timeout with the encoder.
Cause
Troubleshooting
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 cable is
connected improperly.
● The encoder cable is
connected loosely.
● The encoder cable is too
long.
● The encoder
communication is
interferenced with.
● 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
Description:
The operating time of the current loop exceeds the interval threshold.
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