6 Electrical installation
6.1 Safety
Important information
DANGER
Ris
k of ignition
Failure to observe this information could result in a risk of ignition
b
Always switch the voltage supply off before disconnecting a connecting cable from
the device.
b
Ensure that all electrical connections to the device or to the connections are
protected.
b
The IP enclosure rating for the connections and therefore for the device is only
guaranteed if the connections are actually connected or protected. Otherwise
foreign objects can enter the terminal compartment. This can cause an explosion
the next time the device is switched on.
b
Take appropriate technical measures to ensure the IP enclosure rating of the
connecting cables when the cables are connected and disconnected.
DANGER
Hazard due to electrical voltage
Hazard due to unexpected starting of the machine
b
Make sure that the machine is (and remains) disconnected from the voltage
supply during the electrical installation.
b
Make sure that the dangerous state of the machine is (and remains) switched off
during electrical installation.
b
Make sure that the outputs of the safety light curtain have no effect on the
machine during the electrical installation work.
b
Use a suitable voltage supply.
DANGER
H
azard due to lack of effectiveness of the protective device
The dangerous state may not be stopped in the event of non-compliance.
b
Always connect the two OSSDs separately. The two OSSDs must not be connected
to each other.
b
Connect the OSSDs such that the machine controller processes both signals
separately.
DANGER
H
azard due to lack of effectiveness of the protective device
The dangerous state may not be stopped in the event of non-compliance.
b
Prevent the formation of a potential difference between the load and the protec‐
tive device.
DANGER
H
azard due to lack of effectiveness of the protective device
Malfunctions can occur if unused inputs are wired incorrectly.
b
Unused inputs must either not be connected or be permanently switched to LOW.
6 ELECTRICAL INSTALLATION
78
O P E R A T I N G I N S T R U C T I O N S | deTec4 Ex II 3GD 8023872/18YZ/2021-01-14 | SICK
Subject to change without notice
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