Maintenance; Regular Inspection Of The Protective Device By Qualified Safety Personnel - Mitsubishi MELSEC-WS0-CPU0 User Manual

Chapter 11
11

Maintenance

89
Maintenance
The following sections inform about regular tests and the exchange of MELSEC-WS
modules.
Do not try to dismantle, repair or modify the MELSEC-WS modules. This can lead to
a loss of the safety function(s). In addition Mitsubishi accepts no claims for liability.
11.1 Regular inspection of the protective device by
qualified safety personnel
 Check the system at the inspection intervals specified in the national rules and
regulations. This procedure ensures that any changes on the machine or
manipulations of the protective device are detected before use/re-use.
 Each safety application must be checked at an interval specified by you. The
effectiveness of the protective device must be checked by authorized
commissioned persons.
 If any modifications have been made to the machine or the protective device, or if
the MELSEC-WS safety controller has been changed or repaired, the system
must be checked again as specified in the checklist in Chapter 14.
 Carry out regular or daily inspections in order to keep the MELSEC-WS modules
in an optimal operating mode.
 Check whether the implementation of the MELSEC-WS modules fulfills all the
technical data of the device.
 Check the mounting conditions and whether the wiring of the MELSEC-WS
modules is still correct.
 Regularly verify that the safety functions fulfill the requirements of the application
as well as all relevant regulations and standards (e.g. regular checking) in order
to ensure the reliability of the safety functions.