Operating instructions
Operating Instructions Chapter 6
C4000 Standard/Advanced
8009861/WA65/2012-06-12 © SICK AG • Industrial Safety Systems • Germany • All rights reserved 61
Subject to change without notice
Electrical installation
6.10 Key-operated pushbutton for bypass
T
he bypass function may only be activated by a key-operated pushbutton with an
automatic reset and two levels or by two input signals that are independent of each other,
e.g. two position switches.
T
he key-operated pushbutton for bypass is connected to the same connections as the
emergency stop signal instead of the emergency stop signal. You can design it also as
equivalent (N/C / N/C) or complementary (N/O / N/C). See section 6.9 “Emergency stop”
on page 60.
Mount the key-operated pushbutton for bypass in such a way that the hazardous point
is completely visible when the key-operated pushbutton is used.
The key-operated pushbutton for bypass must have volt-free contacts.
When you connect the key-operated pushbutton for bypass to the C4000, you can
connect a teach-in key-operated switch only to the UE402. An emergency stop signal
can therefore no longer be connected, as it uses the same connections.
On a cascaded system with a C4000 Guest or a C4000 without extension connection as
the last guest, you can only connect the key-operated pushbutton for bypass to a
switching amplifier.
You must configure the switching mode of the key-operated pushbutton for bypass to
comply with the selected switch type (N/C / N/O or N/O / N/O) with the aid of the CDS:
Device symbol C4000 Host (receiver), context menu Configuration draft, Edit,
selection System, file card General, option Key-operated pushbutton for bypass.
6.11 Signal output (ADO)
Pin 7 on the system connector is a signal output (ADO). You can use this output for a relay
or a PLC.
If you connect the signal output, then you must configure it with the aid of the CDS prior to
commissioning. Details can be found in chapter 4.5 “Signal output (ADO)” on page 25.
Device configuration after replacement!
If you replace a safety light curtain on which the signal output (ADO) is connected, then you
must transfer the configuration to the device again. It is not sufficient to make the elec-
trical connections, because new devices are supplied ex factory with the signal output
deactivated.
Notes
Fig.
41
:
Connection to the
signal output
Note
Pin 7
0
V
DC