5
Electrical installation
5.1
Notes on the electrical installation
NOTICE
Device damage due to incorrect supply voltage!
An incorrect supply voltage may result in damage to the device.
■
Only operate the device with safety/protective extra-low voltage (SELV/PELV).
■
The sensor is a device of protection class III.
NOTICE
Device damage due to incorrect supply voltage!
An incorrect supply voltage may result in damage to the device.
•
Only operate the device with an LPS (limited power source) in accordance with IEC
60950-1 or an NEC Class 2 power supply unit.
NOTICE
Device damage or unpredictable operation due to working with live parts!
Working with live parts may result in unpredictable operation.
■
Only carry out wiring work when the power is off.
■
Only connect and disconnect electrical connections when the power is off.
■
The electrical installation must only be performed by electrically qualified person‐
nel.
■
Standard safety requirements must be met when working on electrical systems!
■
Only switch on the supply voltage for the device when the connection tasks have
been completed and the wiring has been thoroughly checked.
■
When using extension cables with open ends, ensure that bare wire ends do not
come into contact with each other (risk of short-circuit when supply voltage is
switched on!). Wires must be appropriately insulated from each other.
■
Wire cross-sections in the supply cable from the user’s power system must be
selected in accordance with the applicable standards.
■
Only operate the device with an LPS (limited power source) in accordance with IEC
60950-1 or an NEC Class 2 power supply unit.
■
All circuits connected to the device must be designed as SELV/PELV circuits.
■
Operation in short-circuit protected network at max. 8 A.
NOTE
Layout of data cables
■
Use screened data cables with twisted-pair wires.
■
Implement the screening design correctly and completely.
■
To avoid interference, e.g., from switching power supplies, motors, clocked drives,
and contactors, always use cables and layouts that are suitable for EMC.
■
Do not lay cables over long distances in parallel with voltage supply cables and
motor cables in cable channels.
The IP enclosure rating for the device is only achieved under the following conditions:
■
The cables plugged into the connections are screwed tight.
■
Any other covers present must be closed and lie flush on the device.
If these instructions are not complied with, the IP enclosure rating for the device is not
guaranteed!
ELECTRICAL INSTALLATION
5
8022051/2018-01-31 | SICK
O P E R A T I N G I N S T R U C T I O N S | PSS Prime
13
Subject to change without notice
