Description of Fault Codes
‑42‑
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. Overcurrent is caused by
the superposition of the
braking current and phase
current.
Check if the drive
accelerates abruptly during
braking. Check if the voltage
feedback exceeds the
release threshold through
the Inovance drive
commissioning platform,
and if the torque command
increases abruptly.
Increase the acceleration/
deceleration time.
5. 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.
● E201.4: Phase‑N overcurrent
Description:
An excessively high current flows through the negative pole of the DC‑AC circuit.
Cause
Troubleshooting
Solution
1. Gains are set improperly,
leading to motor oscillation.
Check whether vibration or
sharp noise occurs during
start and operation of the
motor, or view "Current
feedback" in the software
tool.
Adjust the gains.
2. The encoder is wired
improperly, aging, or
connected loosely.
Check whether the encoder
cable provided by Inovance
is used and whether the
cable is aging, corroded, or
connected loosely.
Re‑solder, tighten or replace
the encoder cable.
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