Description of Fault Codes
‑52‑
Cause
Troubleshooting
Solution
The power supply is
disconnected during
operation.
Check the power input
specifications of the servo
drive and measure whether
the input voltage at the
power supply side of the
main circuit cables and R/S/
T on the drive side is within
the following range:
220 V servo drive:
Value range: 220 V to 240 V
Allowable deviation: ‑10% to
+10%
380V servo drive:
Effective value: 380 to 440 V
Allowable deviation: ‑10% to
+10%
Measure the voltages of all
the three phases.
Increase the capacity of the
power supply.
Monitor the power supply
voltage and check whether
the main circuit power
supply is applied to other
devices, resulting in
insufficient power capacity
and voltage drop.
Check whether 200B.1Bh
(Bus voltage) is within the
following range: 220 V servo
drive: H0b.27h＜ 200 V. 380 V
servo drive: H0b.27h＜ 380
V. The fault persists after the
main circuit is powered off
and on repeatedly.
Replace the servo drive.
Check the wiring of the main
circuit.
Replace the cables and wire
the power cables correctly
Three‑phase: R, S, T/L1, L2,
L3
● E420.0: Main circuit phase loss
Description:
Drive three‑phase input phase abnormal.
To Next Page
Loading...
