Safety Application Examples; Overview - ABB AC500-S Safety User Manual

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Safety application examples

7.1 Overview

In this chapter, application examples based on PLCopen Safety POUs are presented with the main goal to
give an explanation on how PLCopen Safety POUs can be used in typical safety applications. Examples are
used from [7] with a permission from PLCopen organisation.
Initialization procedures for handling PROFIsafe start-up behaviour and AC500-S specific POUs are not
listed in these examples, but have to be included in the final safety application programs, as it was men-
tioned in the chapter "Checklist for creation of safety application program" (
ation of safety application program" on page 406).
As an example of the usage of safety functions, the following production line is used (Fig. 133). It is state-of-
the-art to use a programmable electronic system (PES) to realize the safety functions (versus hard-wired).
The PLCopen FBs described below can be used to easily realize the safety application program.
This production line includes the following:
Fig. 133: Example of safety functionalities in a production line
1 Centralized control cabinet, including the safety
related part of the control system where the
safety related function blocks are running.
2 Infeed of material. In this example no special
safety related functions are used. However,
safety functionalities like muting to separate
between products and persons could be used.
3 Cutting of the material. For manual control a two
hand control safety function (unit is in front of the
machine) is added combined with a 2-fold door
monitoring system (attached to the door on the
machine)
4 Automatic printing station, with door monitoring
as safety function in case of service access
(attached to the door on the machine)
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Safety application examples
5 First cartonning machine with door monitoring as
safety function in case of service access
(attached to the door on the machine). Some-
times, the manual operation is necessary. In this
case, the operator can run the machine with a
safely limited speed controlled by an enabling
device which, when released, initiates a safe
stop.
AC500-S
Ä Chapter 6.2 "Checklist for cre-
Overview
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