User Manual
Chapter 1
GFK-2843A
Jan 2020
For your safety
6
1.7
Documentation
Latest
documentation
Make sure you always use the latest documentation. Changes or
additions to this document can be found on the Internet at
https://www.emerson.com/Industrial-Automation-
Controls/support.
VersaSafe
System
When working on the VersaSafe system and its components, you
must always keep this user manual and other items of product
documentation on hand and observe the information therein.
User manuals:
•
For the controller used
•
For VersaSafe system I/O modules
•
For VersaSafe system functional blocks
Please also observe the relevant information about the bus system
used.
VersaPoint
product range
GFK-2736
Automation terminals of the VersaPoint product range
(configuration and installation) Documentation for the Network
Interface Unit (NIU) used
1.8
Abbreviations used
Table 1: Abbreviations used
Abbreviation
Meaning
Standard
Example
SIL
Safety integrity level
IEC 61508-2
SIL 2, SIL 3
SIL CL
SIL claim limit
EN 62061
SIL CL 3
Cat.
Category
EN ISO 13849-1
Cat. 2, Cat. 4
PL
Performance level
EN ISO 13849-1
PL e, PL d
Table 2: Abbreviations used
Abbreviation
Meaning
PELV
Protective extra-low voltage
A circuit in which the voltage cannot exceed 30 V AC, 42.4 V peak value
or 60 V DC under normal conditions, and under single-fault conditions,
except in the event of grounding errors in other circuits.
A PELV circuit is like a SELV circuit, but is connected to protective earth
ground.
(According to EN 61131-2)
EUC
Equipment under control