Scope; Abbreviations Used; Symbols Used - Mitsubishi MELSEC-WS0-CPU0 User Manual

About this document
1.4
These operating instructions are original operating instructions.
This manual is valid for all modules of the MELSEC-WS safety controller with the
exception of the network modules.
This document is the original manual.
To configure and undertake diagnostics on these devices you will need version V1.7.0
or later of the Setting and Monitoring Tool. To check the version of the software, on
the Extras menu select Info.
1.5
EDM External device monitoring
EFI Enhanced function interface = safe SICK device communication
ESPE Electro-sensitive protective equipment (e.g. light curtains)
NC Normally closed
NO Normally open
OSSD Output signal switching device
PFHd Probability of dangerous failure per hour
SIL Safety integrity level (safety class)
SILCL Safety integrity level claim limit
1.6
Recommendation Recommendations are designed to give you some assistance in your decision-making
process with respect to a certain function or a technical measure.
Note Notes provide special information on the device.
,  LED symbols describe the state of a diagnostics LED. Examples:
,


 Action Instructions for taking action are shown by an arrow. Read carefully and follow the
instructions for action.
ATTENTION!
An "ATTENTION" indicates concrete or potential dangers. It is intended to protect you
from harm and help avoid damage to devices and systems.
Read warnings carefully and follow them!
ATTENTION
Otherwise the safety function may be impaired and a dangerous state may occur.
The term "dangerous state"
The dangerous state (standard term) of the machine is always shown in the drawings
and diagrams of this document as a movement of a machine part. In practical
operation, there may be a number of different dangerous states:

Scope

Abbreviations used

Symbols used

The LED is illuminated constantly.
The LED is flashing.
The LED is off.

machine movements

electrical conductors
Chapter 1
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