Chapter 6 Operating Instructions
C 4000 Standard/Advanced
46 © SICK AG • Industrial Safety Systems • Germany • All rights reserved 8 009 861/OE59/19-11-04
Electrical installation
6 Electrical installation
Switch the entire machine/system off line!
The machine/system could inadvertently start up while you are connecting the unit.
Make sure that the entire machine/system is disconnected during the electrical
installation.
Connect OSSD1 and OSSD2 separately!
To ensure that the signals are safe, OSSD1 and OSSD2 are to be connected separately to
the machine controller and the machine controller must process the two signals separa-
tely. OSSD1 and OSSD2 must not be connected together.
$ The two outputs are protected against short-circuits to 24 V DC and 0 V. When the light
path is clear, the signal level on the outputs is HIGH DC (at potential), when the light
beams are interrupted or there is a device fault the outputs are LOW DC.
$ The safety light curtain C 4000 meets the interference suppression requirements (EMC)
for industrial use (interference suppression class A). When used in residential areas it
can cause interference.
$ To ensure full electromagnetic compatibility (EMC), functional earthing (FE) must be
connected.
$ The external voltage supply of the device must be capable of buffering brief mains
voltage failures of 20 ms as specified in EN 60)204-1. Suitable power supplies are
available as accessories from SICK (Siemens type series 6 EP 1).
$ System connections and extension connections in a cascaded system must be connect-
ed only if the system is off line. The configuration connection however, may be
connected/disconnected with the system on line.
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WARNING
Notes