6 Electrical installation
6.1 Device connection
Important information
DANGER
H
azard due to lack of effectiveness 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
Ensure the safety relay is supplied with supply voltage in all operating statuses.
b
Ensure that the supply voltage of the safety relay is not connected via safety
sensors or safety switches in order to switch the enabling current paths.
Prerequisites
•
E
lectrical installation is carried out according to the project planning.
•
Dangerous condition of the machine is and remains off during the electrical instal‐
lation.
•
Electrical installation is done in conformity with IEC60204-1.
•
The mounting rail is connected to the functional earth.
•
The safety outputs and external device monitoring (EDM) must be wired within the
control cabinet.
•
When using the safety relay with voltages larger than the safety extra-low voltage:
The N/C contacts of the controlled contactors must be safely isolated from the
other contactor contacts.
•
Enabling current paths are safely isolated from the other terminals. There is a
basic insulation between the enabling current paths.
•
The ground connection of all connected devices must have the same potential as
A2.
•
The connected control devices comply with the required category in accordance
with ISO 13849-1 and SIL in accordance with IEC 62061 (e.g. shielded single
sheathed cables, separate installation).
•
The cables for the control devices must be laid with protection.
6 ELE
CTRICAL INSTALLATION
20
O P E R A T I N G I N S T R U C T I O N S | ReLy HAND1 8020872/1FH0/2022-10-27 | SICK
Subject to change without notice
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