Troubleshooting - Omron SYSMAC C Series User Manual

Maintenance and troubleshooting
Mounting
CPU and expansion I/O unit firmly Mounting screws must not be loose
secured?
Expansion |/O unit cable securely The cable must not be loose
inserted in connector?
Screws for external wiring firmly Screws must not be loose
secured?
Any break in external wiring cables Must be free from visible abnormality
Battery service life 5 years
Optical-fiber cable
Bending radius of the optical-fiber 15mm min.
cable
Caution: Be sure that the power is off before replacing the expansion I/O or other
unit.
Remember
lf a defective unit is discovered and replaced, confirm the operation of the
replacement unit.
When returning a defective unit to OMRON, enclose a written description
of the problem.
If the problem is a poor cable contact, wipe the connector pins with a
clean all-cotton cloth moistened with industrial alcohol. Make certain that
there is no cloth debris remaining on the cable before plugging it in.
Tools and testing devices for maintenance
Screwdrivers (phillips and flat-bladed)
VOM or digital voltmeter
Industrial alcohol and all-cotton cloth
Tools and testing devices for troubleshooting
Oscilloscope
Pen-recording oscilloscope
Thermometer, hygrometer
Maintenance parts
To ensure continuous operation in the event of failure, it is recommended
to keep at least one spare expansion I/O unit on hand.