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12 Troubleshooting and Maintenance
G5 Series AC Servo Drives With Built-in EtherCAT Communications, Linear Motor Type
12-5 Periodic Maintenance
12
• The lifetimes for the different drive parts are given below.
Aluminum electrolytic capacitors: 28,000 hours
(at an ambient drive operating temperature of 55C, constant output at rated force, constant output at
rated 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: Approx. 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 40C.
• 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 ambient operating temperature.
Generally, an increase of 10C in the operating ambient temperature will reduce capacitor service life
by 50%.
For example, when the ambient operating temperature is 25C, the life expectancy will be as follows:
• 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 motor 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 motor and determine if part replacement is
required.
Servo Drive Life Expectancy
Life expectancy at 25°C = Life expectancy at 55°C × 2
55 - 25
10
= 224,000 hours
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