SICK deTec4 Ex - Application Diagnostic Output; Connection of Sender and Receiver; Electrical Diagram of External Device Monitoring (EDM); Electrical Diagram of the Application Diagnostic Output

24 V DC
k2
k1
K1
K2
0 V DC
OSSD 1
EDM
OSSD 2
r
Figure 21: Electrical diagram of external device monitoring (EDM)
Y
ou must implement external device monitoring electrically so that the two N/Cs (k1,
k2) close in a positively guided manner when the contactors (K1, K2) reach their de-
energized position once the protective device has responded. 24 V are then present at
the input of external device monitoring. If 24 V are not present once the protective
device has responded, one of the contactors is defective and external device monitor‐
ing prevents the machine from restarting.
4.4.3 Application diagnostic output
The safety light curtain has an application diagnostic output on the system connection.
D
epending on the configuration, the application diagnostic output signals a certain sta‐
tus of the safety light curtain, e.g. if the reset pushbutton must be engaged or if there is
a weak signal at the receiver.
For a signal of the safety light curtain to be displayed, a light can be connected to the
application diagnostic output or the signal can be transmitted to the machine con‐
troller.
0 V DC
ADO
r
Figure 22: Electrical diagram of the application diagnostic output
Further topics
•
"C
onfiguring application diagnostic output", page 64
4.4.4 Connection of sender and receiver
Overview
T
o indicate the status on both sides, you can connect the sender and receiver to each
other in the control cabinet. To do this, connect the following wires:
•
0 V DC of sender and receiver
•
+24 V DC of sender and receiver
•
Com1 of sender and receiver
Further topics
•
"Pr
otection against interference from systems in close proximity to each other",
page 29
4 P
ROJECT PLANNING
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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 | deTec4 Ex 8022883/2019-03-07 | SICK
Subject to change without notice