10 Troubleshooting and Maintenance
10 - 22
OMNUC G5-series (Pulse-train Input Type) AC Servomotors and Servo Drives User’s Manual
• The lifetimes for the different drive parts are given below.
• Aluminum electrolytic capacitors: 28,000 hours
(at a drive operating ambient temperature of 50°C, constant output at rated torque, constant output at
rated rotation speed, and installation as described in this manual)
Axial-flow fan: 10,000 to 30,000 hours (The limit depends on the operating conditions.)
Inrush current prevention relay: Approximately 20,000 operations (The limit depends on the operation
conditions.)
• When using the Servo Drive in continuous operation, use fans or air conditioners to maintain the
ambient temperature below 40°C.
• We recommend that the ambient temperature and the power supply ON time be reduced as much as
possible to lengthen the service life of the Servo Drive.
• The limit of aluminum electrolytic capacitors is greatly affected by the operating ambient temperature.
Generally, an increase of 10°C in the operating ambient temperature will reduce capacitor service life
by 50%.
• The aluminum electrolytic capacitors deteriorate even when the Servo Drive is stored with no power
supplied. If the Servo Drive is not used for a long time, we recommend periodic inspection and a part
replacement period of 5 years.
• If the Servomotor or Servo Drive is not to be used for a long time, or if they are to be used under
conditions worse than those described above, a periodic inspection period of 5 years is
recommended.
• Upon request, OMRON will inspect the Servo Drive and Servomotor and determine if part
replacement is required.
10-5-2 Servo Drive Life Expectancy
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