Omron R88M-K User Manual page 525

Error No. (hex)
Name
Main Sub
13 0 Main Circuit
Power Supply
Undervoltage
(Undervoltage
between
positive and
negative
terminals)
1 Main Power
Supply
Undervoltage
(AC
interruption
detected)
G5-series AC Servomotors and Servo Drives User's Manual (with Built-in EtherCAT Communications)
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.
100-V products: Approx. 80 VDC
(Approx. 55 VAC)
200-V products: Approx. 110 VDC
(Approx. 75 VAC)
400-V products: Approx. 180 VDC
(Approx. 125 VAC)
• 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).
12 Troubleshooting and Maintenance
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. Refer
to 2-3-1 Servo Drive Model Table on page
2-8 for information on 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.
12
12-15