SICK RFU62 Series

6 Electrical installation
6.1 Safety
6.1.1 Notes on electrical installation
•
Electrical installation must only be performed by electrically qualified personnel.
•
Standard safety requirements must be observed when working on electrical sys‐
tems!
•
Electrical connections between the device and other devices may only be made or
separated in a voltage-free state. Otherwise, there is a risk of damaging the
devices.
•
All connection work must be performed at ambient temperatures above 0 °C, see
"Ambient data", page 85
•
Connect the device to the permissible supply voltage only, see "Connecting the
supply voltage", page 55.
•
Only switch on the supply voltage to the device (or optional connection module or
fieldbus module depending on the type), after first:
°
Completing the connection work
°
Carefully checking the wiring work
•
Where connecting cables with one end open are concerned, make sure that bare
wire ends are not touching (risk of short circuit when the supply voltage is switched
on). Wires must be appropriately insulated from each other. This also applies to
unused wires.
•
The wire cross-sections in the supply cable from the user’s power system must be
selected in accordance with the applicable national standards. When this is being
done in Germany, observe the following standards: DIN VDE 0100 (Part 430) and
DIN VDE 0298 (Part 4) and/or DIN VDE 0891 (Part 1).
•
The wire cross-sections of the data and, if applicable, switching signal cables must
also be selected in accordance with the applicable national standards.
•
Circuits connected to the device must be designed as SELV circuits (SELV = Safety
Extra Low Voltage). The voltage supply must meet SELV requirements in accor‐
dance with the currently applicable standards, see "Mechanics and electronics",
page 84.
NOTE
For additional instructions on operating the device at ambient temperatures below
0 °C, see "Prerequisites", page 49
Data cables
NOTE
Layout of data cables
•
Use shielded data cables with twisted-pair wires.
•
The possible cable length between the device and host computer depends on:
°
the chosen physical version of the host interface
°
the data transmission rate set in the device
For further information, see "Wiring data interfaces", page 58.
•
Implement the shielding design correctly and completely.
•
To avoid interference, always use EMC-compliant cables and layouts. This applies,
for example, to cables for switched-mode power supplies, motors, clocked drives,
and contactors.
•
Do not lay cables in parallel with voltage supply cables or motor cables in cable
channels over longer distances.
6 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 | RFU62x 8015930/ZTM0/2018-11-06 | SICK
Subject to change without notice