Omron R88L-EC Series User Manual page 428

12 Troubleshooting and Maintenance
Error No.
Name
Main Sub
13 hex 0 hex Main Circuit
Power
Supply
Undervoltage
(Undervoltag
e between
positive and
negative
terminals)
1 hex Main Power
Supply
Undervoltage
(AC
interruption
detected)
12 - 14
Cause
If the Undervoltage Error Selection
(3508 hex) is set to "1," a momentary
power interruption occurred between L1
and L3 for longer than the value specified
for the Momentary Hold Time (3509 hex).
Alternatively, the voltage between the
positive and negative terminals in the
main power supply converter dropped
below the specified value while the servo
was ON.
• The power supply voltage is low.
• A momentary power interruption
occurred.
• Insufficient power supply capacity: the
power supply voltage dropped because
there was inrush current when the main
power supply was turned ON.
• Phase-failure: a Servo Drive with
3-phase input specifications was
operated with single-phase power
supply.
• The Servo Drive is faulty (circuit fault).
G5-series Linear Motors/Servo Drives With Built-in EtherCAT Communications
Measures
Measure the voltage between the
connector (L1, L2, and L3) lines.
• Increase the power supply voltage.
Change the power supply. Eliminate the
cause of the failure of the
electromagnetic contactor on the main
circuit power supply, and then turn ON
the power again.
• Check the setting of the Momentary
Hold Time (3509 hex). Set each phase
of the power supply correctly.
• Increase the power supply capacity.
• Connect each phase (L1, L2, and L3) of
the power supply correctly. Use L1 and
L3 for single-phase 100 V and
single-phase 200 V.
• Replace the Servo Drive.