12-1
12-1 Troubleshooting
OMNUC G5-series AC Servomotors and Servo Drives User’s Manual (with Built-in EtherCAT Communications)
12
Troubleshooting and Maintenance
12-1 Troubleshooting
Preliminary Checks When a Problem Occurs
This section explains the preliminary checks and analytical software required to determine the
cause of a problem if one occurs.
Checking the Power Supply Voltage
 Check the voltage at the power supply input terminals.
Main Circuit Power Supply Input Terminals (L1, L2, L3)
R88D-KN@L-ECT-R (50 to 400 W): Single-phase 100 to 120 VAC (85 to 132 V) 50/60 Hz
R88D-KN@H-ECT-R (100 W to 1.5 kW): Single-phase 200 to 240 VAC (170 to 264 V) 50/60 Hz
R88D-KN@H-ECT-R (750 W to 1.5 kW): 3-phase 200 to 240 VAC (170 to 264 V) 50/60 Hz
(2 kW to 5 kW): 3-phase 200 to 230 VAC (170 to 253 V) 50/60 Hz
R88D-KN@F-ECT-R (750 W to 5 kW): 3-phase 380 to 480 VAC (323 to 528 V) 50/60 Hz
 Control Circuit Power Supply Input Terminals (L1C, L2C)
R88D-KN@L-ECT-R (50 to 400 W): Single-phase 100 to 120 VAC (85 to 132 V) 50/60 Hz
R88D-KN@H-ECT-R (100 W to 1.5 kW): Single-phase 200 to 240 VAC (170 to 264 V) 50/60 Hz
(2 kW to 5 kW): 3-phase 200 to 230 VAC (170 to 253 V) 50/60 Hz
R88D-KN@F-ECT-R (750 W to 5 kW): 24 VDC (21.6 to 26.4 V)
 If the voltage is out of range, there is a risk of operation failure. Be sure that the power supply is
within the specified range.
 Check the voltage of the sequence input power supply (+24 VIN terminal (CN1 pin 7)).
It must be between 11 and 25 VDC.
If the voltage is out of range, there is a risk of operation failure. Be sure that the power supply is
within the specified range.
Checking Whether an Error Has Occurred
 Make an analysis using the 7-segment display on the front of the Servo Drive or using CX-Drive
tools.
When an Error Has Occurred
…
Check the error display (
@@
) and make an analysis based on the error that is indicated.
 When an Error Has Not Occurred
… Make an analysis according to the error conditions.
 In either case, refer to 12-4 Troubleshooting on page 12-13 for details.
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