Omron R88M-K Series User Manual page 587

Servo Drive Life Expectancy
 The lifetimes for the different drive parts are listed below.
Aluminum electrolytic capacitors:
(at an ambient drive operating temperature of 55°C, constant output of rated torque, constant
output of 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: 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 40°C.
 We recommend that ambient temperature and the power supply ON time be reduced as much the
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 10°C in the operating ambient temperature will reduce
capacitor service life by 50%. Following equation shows an example for 25°C: .
 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 examine the Servo Drive and Servomotor and determine if part
replacement is required.
OMNUC G5-SERIES AC SERVOMOTOR AND SERVO DRIVE USER'S MANUAL
28,000 hours
Lifetime 25°C = Lifetime 55°C × 2
11-5 Periodic Maintenance
55−25
= 224000 hour
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