Description of Fault Codes
‑39‑
Cause
Troubleshooting Solution
3. The servo drive is faulty.
1. 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.
2. Disconnect the motor
cable and power on the
servo drive again, but the
fault persists.
3. Check whether resistance
of the external
regenerative resistor is
too small or the
regenerative resistor is
short‑circuited (between
terminals P⊕ and C).
1. Replace with a
regenerative resistor with
matching resistance and
perform wiring again.
2. Replace the servo drive.
4. 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.
● E201.1: Phase‑U overcurrent
Description:
A current higher than the threshold is collected in the phase‑U current.
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