Description of Fault Codes
‑46‑
Cause
Confirming Method
Solution
1. Motor cables are in poor
contact.
2. Motor cables are
grounded.
3. U/V/W cables of the motor
are short‑circuited.
1. Check whether the servo
drive power cables and
motor cables on the U, V,
and W sides of the servo
drive are loose.
2. 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.
1. Tighten the cables that
are loose or
disconnected.
2. Replace the motor in case
of poor insulation.
4. The motor is damaged.
1. Disconnect motor cables
and check whether short
circuit occurs among
motor U/V/W cables and
whether burrs exist in the
wiring.
2. Disconnect the motor
cables and measure
whether the resistance
among UVW phases of
motor cables is balanced.
1. Connect the motor cables
correctly.
2. Replace the motor if the
resistance is unbalanced.
● E201.4: Phase‑N overcurrent
Cause:
An excessively high current flows through the negative pole of the DC‑AC circuit.
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.
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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