Chapter
5
Operating Instructions
UE4740
18
©
SICK AG • Industrial Safety Systems • Germany • All rights reserved
8020182/1CUO/2022-08-26
Subject to change without notice
Electrical installation
5
Electrical installation
Switch the entire machine/system off line!
The system could start up unexpectedly while you are connecting the EFI gateway or
establishing the connections with other devices.
Ensure that the entire system is de-energised during the electrical installation.
SICK industrial safety devices are designed for local DC supplies only!
If the device is used differently in DC power supply networks, additional protection
measures have to be taken, e.
g. according to IEC 61
326-3-1.
Machines where safety devices are used must be installed and designed according to the
lightning protection zone (LPZ) according to EN 62
305-1. Required Immunity levels can be
achieved through the use of external protective devices. The installed surge protective
devices (SPD) should meet the requirements of EN 61
643-11.
The installation must prevent disturbances according to IEC 61
000-4-16 (common mode
disturbances in the frequency range of 0 Hz to 150 kHz).
Check the cabling whenever work has been carried out on the EFI gateway!
Check the cabling again whenever maintenance or work has been carried out on the EFI
gateway!
The EFI gateway meets the interference suppression requirements (EMC) for industrial
use (interference suppression class A). When used in residential areas it can cause
interference.
The supply GNDs of the connected EFI devices have to be interconnected.
The EFI gateway must be connected using a twisted wire pair. The twisted pair must be
shielded and the shield must be connected at both ends for the connection to the EFI
gateway.
All shields must also be connected to the earthed mounting rail in the control cabinet.
All the devices, also the EFI gateway, have to be connected to a frame potential.
The device is designed for Protection class III. The voltage supply must therefore be
realised with a safety extra-low voltage.
The electrical installation must be made as per EN 60
204-1. To meet the requirements
of the relevant product standards, the external voltage supply for the device (SELV)
must be able to withstand the brief mains failure of 20 ms allowed in EN 60
204-1.
If the EFI gateway is used in accordance with the requirements of UL 508, the voltage
supply must be approved “for
use in class 2 circuits”.
Currents > 4 A may not flow.
All the devices may only be connected in a de-energised state. The configuration
connection, on the other hand, may also be connected/disconnected with the power
supply connected.
The EFI gateway and the sensors connected to the EFI gateway must be supplied with
the same power supply unit.
WARNING
Notes
