10 Troubleshooting and Maintenance
10 - 2
OMNUC G5-series (Pulse-train Input Type) AC Servomotors and Servo Drives User’s Manual
10-1 Actions for Problems
This section explains the preliminary checks and analytical software required to determine the cause of
a problem if one occurs.
• Check the voltage at the power supply input terminals.
Main Circuit Power Supply Input Terminals (L1, L2, L3)
R88D-KPH(100 W to 1.5 kW): Single-phase 200 to 240 VAC (170 to 264 VAC) 50/60 Hz
(750 W to 1.5 kW): 3-phase 200 to 240 VAC (170 to 264 VAC) 50/60 Hz
(2 to 5 kW): 3-phase 200 to 230 VAC (170 to 253 VAC) 50/60 Hz
Control Circuit Power Supply Input Terminals (L1C, L2C)
R88D-KPH(100 to 1.5 kW): Single-phase 200 to 240 VAC (170 to 264 VAC) 50/60 Hz
(2 to 5 kW): Single-phase 200 to 230 VAC (170 to 253 VAC) 50/60 Hz
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 and operation keys on the front of the Servo Drive.
• When an alarm has occurred
Check the alarm display () and make an analysis based on the alarm that is indicated.
• When an alarm has not occurred
Make an analysis according to the error conditions.
• In either case, refer to 10-4 Troubleshooting on page 10-10 for details.
10-1-1 Preliminary Checks When a Problem Occurs
Checking the Power Supply Voltage
Checking Whether an Alarm Has Occurred
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