Technical Information Chapter 4
CLV61x
Electrical installation
8015592/ZNI9/2017-06-13 © SICK AG · Germany · All rights reserved · Subject to change without notice 17
4 Electrical installation
4.1 Notes on the Electrical Installation
The electrical installation must only be performed by qualified electricians.
The currently applicable safety regulations must be observed when working in electri-
cal systems!
Electrical connections between the CLV61x and other devices must only be created and
disconnected when there is no power to the system. Otherwise, the devices may be
damaged.
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 of the supply cable from the customer's power system should be
designed in accordance with the applicable standards.
In order to retain the IP 65 enclosure rating for the CLV61x connecting cable even when
using an extension cable (e.g., no. 2043413, 2 m), insert rubber seal no. 4038847 be-
tween the plug and socket of the D-Sub plug connection of the cables and screw in the
plug connection.
Circuits connected to the CLV61x must be designed as SELV circuits (SELV = Safety
Extra Low Voltage).
Do not switch on the supply voltage for the CLV61x/the CDB620-001/CDM420-0001
connection module until the connection work has been completed and the wiring work
has been tested thoroughly.