Description of Fault Codes
‑42‑
Cause
Confirming Method 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.
1. Motor parameters are set
improperly, modify motor
parameter values.
2. Current loop parameters
are set improperly,
modify current loop
parameter values.
3. Speed loop parameters
are set improperly,
leading to motor
oscillation.
4. Servo drive operates
improperly. Replace it.
2. The encoder is wired
improperly, aging, or
connected loosely.
1. Check whether the
encoder cable provided
by Inovance is used and
whether the cable is
aging, corroded, or
connected loosely.
2. 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.
Re‑solder, tighten or replace
the encoder cable.
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, C).
Use a regenerative resistor
of matching resistance.
Perform wiring again.
4. The servo drive is faulty.
Disconnect the motor cable
but the fault persists after
the servo drive is powered
off and on again.
Replace the servo drive.
● E201.1: Phase‑U overcurrent
Cause:
A current higher than the threshold is collected in the phase‑U current.
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