Description of Fault Codes
‑47‑
Cause
Troubleshooting
Solution
1. The voltage input to the
main circuit is too high.
Check the power input
specifications of the servo
drive and measure whether
the voltage input to main
circuit cables (R/S/T) on the
drive side is within the
following range:
220 V servo drive:
Effective value: 220 V to 240
V
Allowable deviation: –10%
to +10% (198 V to 264 V)
380V servo drive:
Value range: 380 V to 440 V
Allowable deviation: –10%
to +10% (342 V to 484 V)
Replace or adjust the power
supply according to the
specified range.
The power supply is
unstable or affected by
lightning.
Check whether the power
supply is unstable, affected
by lightning, or complies
with the preceding range.
Connect a surge protection
device (SPD) and switch on
the power supplies of the
control circuit and the main
circuit. If the fault persists,
replace the servo drive.
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