4 Electrical installation
4.1 Safety
In addition to the information in the underlying operating instructions, please observe
the following points when installing the electrics for the safety light curtain.
DANGER
Ignition Hazard
Failure to observe this information could result in a risk of ignition
b
Always switch the power supply off before disconnecting a connecting cable from
the device.
b
Ensure that all electrical connections to the device or the connections are protec‐
ted.
b
The IP enclosure rating for the connections and therefore for the device is only
guaranteed if the connections are protected. Otherwise foreign objects can get in‐
to the terminal compartment. This can cause an explosion the next time the de‐
vice is switched on.
b
It is absolutely essential that you take technical measures to guarantee the IP en‐
closure rating for the connecting cables.
DANGER
Risk of ignition
Failure to observe this information could result in a risk of ignition.
b
If the safety light curtain is used in an environment classified as tb IIIC, tc IIIB or
tc IIIC the cover must not be removed, not even temporarily (e.g. for maintenance
purposes).
DANGER
Risk of ignition or explosion
b
If you have to remove the cover when working on the safety light curtain, make
sure that the joints and o-ring are clean and undamaged before refitting the cover.
DANGER
Risk of ignition or explosion
b
Disconnect the power supply before opening the explosion-proof enclosure to
avoid igniting hazardous atmospheres.
b
Do not reconnect the power supply until you have completed the electrical installa‐
tion.
4 ELECTRICAL INSTALLATION
20
O P E R A T I N G I N S T R U C T I O N S | C4000 Select Ex 8017025/YIZ2/2015-02-25 | SICK
Subject to change without notice
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