Periodic Maintenance - Omron OMNUC G Series User Manual

8-5 Periodic Maintenance

Resume operation only after transferring to the new Unit the
contents of the data required for operation.
Not doing so may result in equipment damage.
Do not attempt to disassemble or repair any of the products.
Any attempt to do so may result in electric shock or injury.
Servomotors and Servo Drives contain many components and will operate properly only when each
of the individual components is operating properly.
Some of the electrical and mechanical components require maintenance depending on application
conditions. Periodic inspection and part replacement are necessary to ensure proper long-term
operation of Servomotors and Servo Drives. (quotes from "The Recommendation for Periodic
Maintenance of a General-purpose Inverter" published by JEMA)
The periodic maintenance cycle depends on the installation environment and application conditions
of the Servomotor or Servo Drive.
Recommended maintenance times are listed below for Servomotors and Servo Drives. Use these
for reference in determining actual maintenance schedules.
Servomotor Service Life
 The service life for components is listed below.
Bearings: 20,000 hours
Decelerator: 20,000 hours
Oil seal: 5,000 hours
Encoder: 30,000 hours
These values presume an ambient Servomotor operating temperature of 40C, shaft loads within
the allowable range, rated operation (rated torque and rated r/min), and proper installation as
described in this manual.
You can request replacement of the bearings, Decelerator, Oil Seal, or encoder as repair work.
 The radial loads during operation (rotation) on timing pulleys and other components contacting
belts is twice the still load. Consult with the belt and pulley manufacturers and adjust designs and
system settings so that the allowable shaft load is not exceeded even during operation. If a
Servomotor is used under a shaft load exceeding the allowable limit, the Servomotor shaft can
break, the bearings can burn out, and other problems can occur.
Caution
8-5 Periodic Maintenance
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