WARNING
Ine
ffectiveness of the protective device
In the case of non-compliance, it is possible that the dangerous state of the machine
may not be stopped or not stopped in a timely manner.
The same safety level is required for the safety-related parts of the control which switch
the active protective field as for the safety function.
In many cases, this is safety level PL d as per ISO 13849-1 or SIL2 as per IEC 62061.
b
For position-dependent switching, use two independently wired signal sources, for
example two independent position switches.
b
For speed-dependent switching, use two independently wired signal sources, for
example two independent incremental encoders.
b
For manual operating mode-dependent switching, use a suitable manual control
switch.
WARNING
Ine
ffectiveness of the protective device
In the case of non-compliance, it is possible that the dangerous state of the machine
may not be stopped or not stopped in a timely manner.
b
When operating two safety laser scanners in a system network (communication
via EFI), use the same earthing method for both safety laser scanners.
NOTICE
b
Ensur
e adequate arc suppression at the relays (contactors). Keep in mind that arc-
suppressors can extend the response time.
b
Lay the arc-suppressors parallel to the relays (contactors) (not over the contacts).
NOTE
W
hen using two safety laser scanners connected via EFI in an application, the input sig‐
nals must be connected to just one safety laser scanner. It is not possible to distribute
the input signal connections across two safety laser scanners.
Schematic legend
T
able 6: Schematic legend for connection diagrams
Meaning
k1 and k2 or k3 and k4 Output circuits
Incor
porate these contacts into the controller in such a way that
the dangerous state is brought to an end if the output circuit is
open. For categories 3 and 4, they must be incorporated on dual-
channels (x, y paths) in accordance with EN 13849-1. Observe the
maximum values when loading the outputs (see "Data sheet",
page 121).
FE Functional earth
T
o achieve the specified EMC safety, the functional earth (FE)
must be connected, e.g., to the central earth star point of the vehi‐
cle or system.
H2 Signaling device for fault or contamination
H3 Signaling device for Reset required
H8 Signaling device for warning field interruption
PROJECT PLANNING 4
8010948/ZA21/2020-06-18 | SICK O P E R A T I N G I N S T R U C T I O N S | S300
51
Subject to change without notice
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