SICK C4000 Fusion Ex

4 Electrical installation
4.1 Safety
In addition to the information in the underlying operating instructions, please observe
t
he following points when installing the electrics for the safety light curtain.
DANGER
Ignit
ion Hazard
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 pro‐
tected.
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
into the terminal compartment. This can cause an explosion the next time the
device is switched on.
b
Put in place measures for ensuring supply reliability and delivery dependability.
DANGER
Ris
k 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
Ris
k 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.
DANGER
Ris
k of ignition or explosion
b
Each connection to the protection earth (PE) on the explosion-proof enclosure
must use at least one wire with a cross-section meeting the requirements of the
table below.
Table 1: Minimum wire cross-section for protection earth (PE)
Wire cross-section of outer cable S Minimum wire cross-section of the corre‐
spondin
g protection earth wire S
P
S ≤ 16 mm
2
S
16 mm
2
< S
≤ 35 mm
2
16 mm
2
S > 35 mm
2
0.5 S
4 ELECTRICAL INSTALLATION
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O P E R A T I N G I N S T R U C T I O N S | C4000 Fusion Ex 8022867/2019-03-04 | SICK
Subject to change without notice