Life - Mitsubishi Electric Melsec-Q172DCPU User Manual

6 INSPECTION AND MAINTENANCE

6.4 Life

The following parts must be changed periodically as listed below.
However, if any part is found faulty, it must be changed immediately even when it has
not yet reached the end of its life, which depends on the operating method and
environmental conditions.
For parts replacement, please contact your sales representative.
Module name
Motion CPU module
Electrolytic capacitor
Motion module
Capacitor
Synchronous
encoder
Bearings
(1) Capacitor
The life of the capacitor greatly depends on ambient temperature and operating
conditions. The capacitor will reach the end of its in 10 years of continuous
operation in normal air-conditioned environment.
(2) Bearing
Change the bearings in 20,000 to 30,000 hours as a guideline under rated speed.
This differs on the operating conditions, The bearings must also be changed if
unusual noise or vibration is found during inspection.
Table 6.3 Life
Part name Life guideline
10 years
20,000 to 30,000
hours
6 - 6
Remark
Life guideline is reference time.
If faulty, it must be changed
immediately even when it has
not yet reached the life
guideline.