Description of Fault Codes
‑44‑
Cause
Confirming Method
Solution
1. Motor cables are in poor
contact.
Check whether the servo
drive power cables and
motor cables on the U, V,
and W sides of the servo
drive are loose.
Tighten the cables that are
loose or disconnected.
2. The motor cables are
grounded.
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.
Replace the motor in case of
poor insulation.
3. U/V/W cables of the motor
are short‑circuited.
Disconnect the motor cables
and check whether short
circuit occurs among U, V,
and W phases and whether
burrs exist in the wiring.
Connect the motor cables
correctly.
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.
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