On Safety; Qualified Safety Personnel; Application Areas For The Device - Mitsubishi MELSEC-WS0-CPU0 User Manual

2

On safety

On safety
This chapter deals with your own safety and the safety of the equipment operators.
 Please read this chapter carefully before working with the MELSEC-WS safety
controller or with the machine protected by the MELSEC-WS safety controller.
2.1

Qualified safety personnel

The MELSEC-WS safety controller must be mounted, commissioned and serviced
only by qualified safety personnel.
Qualified safety personnel are defined as persons who
 have undergone the appropriate technical training
and
 have been instructed by the responsible machine owner in the operation of the
machine and the current valid safety guidelines
and
 are sufficiently familiar with the applicable official health and work safety
regulations, directives and generally recognized engineering practice (e.g. DIN
standards, VDE stipulations, engineering regulations from other EC member
states) that they can assess the work safety aspects of the power-driven
equipment
and
 have access to the MELSEC-WS manuals and have read and familiarized
themselves with them
and
 have access to the manuals for the protective devices (e.g. light curtains)
connected to the safety controller and have read and familiarized themselves with
them.
2.2

Application areas for the device

The MELSEC-WS safety controller is a configurable controller for safety
applications. It can be used ...
 in accordance with IEC61508 to SIL3
 in accordance with IEC 62061 to SILCL3
 in accordance with EN/ISO 13849-1 up to Performance Level e
The degree of safety actually attained depends on the external circuit, the realization
of the wiring, the parameter configuration, the choice of the pick-ups and their
location at the machine.
Opto-electronic and tactile safety sensors (e.g. light curtains, laser scanners, safety
switches, sensors, encoders, emergency stop pushbuttons) are connected to the
safety controller and are linked logically. The corresponding actuators of the
machines or systems can be switched off safely via the switching outputs of the
safety controller.
Chapter 2
18