12 Troubleshooting and Maintenance
12-2
G5-series AC Servomotors and Servo Drives User’s Manual (with Built-in EtherCAT Communications)
12-1 Troubleshooting
This section explains the preliminary checks required to determine the cause of a problem if one
occurs.
• Check the voltage at the power supply input terminals.
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.
• 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 12-14 for details.
12-1-1 Preliminary Checks When a Problem Occurs
Checking the Power Supply Voltage
Main Circuit Power Supply Input Terminals (L1, L2, L3)
R88D-KNîš…L-ECT (50 W to 400 W) :Single-phase 100 to 120 VAC (85 to 132 V) 50/60 Hz
R88D-KNîš…H-ECT (100 W to 1.5 kW) :Single-phase 200 to 240 VAC (170 to 264 V) 50/60 Hz
(750 W to 1.5 kW) :3-phase 200 to 240 VAC (170 to 264 V) 50/60 Hz
(2 kW to 15 kW) :3-phase 200 to 230 VAC (170 to 253 V) 50/60 Hz
R88D-KNîš…F-ECT (750 W to 15 kW) :3-phase 380 to 480 VAC (323 to 528 V) 50/60 Hz
Control Circuit Power Supply Input Terminals (L1C, L2C)
R88D-KNîš…L-ECT (50 W to 400 W) :Single-phase 100 to 120 VAC (85 to 132 V) 50/60 Hz
R88D-KNîš…H-ECT (100 W to 1.5 kW) :Single-phase 200 to 240 VAC (170 to 264 V) 50/60 Hz
(2 kW to 15 kW) :3-phase 200 to 230 VAC (170 to 253 V) 50/60 Hz
R88D-KNîš…F-ECT (750 W to 15 kW) :24 VDC (21.6 to 26.4 V)
Checking Whether an Error Has Occurred
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