ABB FlexLoader, Applications Manual

Page: 31 / 68

5 Interface
5.1 External safety interface to connected system
Introduction
The connected system is, for example, the customer’s machine tool or the main
safety system in the robot cell. Most often, the connected system is the master of
the safety system and FlexLoader Standard Safety Center is a slave.
FlexLoader Standard Safety Center can also assume the role of the master in the
safety system, either to other slaves or as a master cooperating with another
master.
xx1800002561
Pos. Description Pos.
Emergency stop ES FlexLoader Standard Safety Center F
Protective stop PS Connected system K
The connected system(s) must achieve sufficiently high PL (performance level)
and PFH values (average probability of dangerous failures per hour) in order to
achieve the necessary PL for all affected safety functions.
It is generally recommended that all protective functions are internally monitored
and doubled.
The emergency stop and protective stop on FlexLoader Standard Safety Center’s
side fulfils the requirements according to category 3 and PLd.
For more information on performance levels and PFH values, see EN ISO 13849:1.
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Application manual - FlexLoader Standard Safety Center 31
3HAC051769-001 Revision: E
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5 Interface
5.1 External safety interface to connected system