102 Rockwell Automation Publication 450L-UM001D-EN-P - December 2019
Chapter 6 Installation and Wiring
Typical Wiring Diagram
Direct to Contactors
Figure 66 - Example of Connecting to External Contactors with a 450L-APR-ED-8 Plug-in for the
Receiver and a 450L-APT-PW-8 Plug-in for the Transmitter
S2=manual restart; K1/K2 = safety contactors (Bulletin 100S-C contactors with electronic coils). For non-motor loads, K1/K2 can be
Bulletin 700S-CF control relays with electronic coils).
The use of some type of surge suppression to help protect and extend the
operating life of the OSSD outputs is required. The potentially high current
surges that are created when switching inductive load devices, such as motor
starters and solenoids, requires this extra protection. By adding a suppression
device directly across the coil of an inductive device, you prolong the life of the
outputs. You also reduce the effects of voltage transients and electrical noise from
radiating into adjacent systems.
Figure 66
shows an output with a suppression device. We recommend that you
locate the suppression device as close as possible to the load device. Since the
outputs are 24V DC, we recommend 1N4001 (50V reverse voltage) to 1N4007
(1000V reverse voltage) diodes for surge suppression for the OSSD safety
outputs. The diode is connected as close as possible to the load coil. Bulletin 100S
contactors and 700S control relays with electronic coils have built-in suppression;
additional components for suppression are not needed.
Aux
Aux
S2
450L-E4FN1200YD
450L-E4FN1200YD
2 Brown
450L-APU-UN-8
898D-F8NB-5
450L-APR-ED-8
898D-F8NB-5
Tx
Rx
5 Gray OSSD1
1 White
6 Pink OSSD2
4 Yellow EDM
8 Red Reset
3 Green
7 Blue
FE
+24V DC
24V Com (0V)
PE
L
L
++
N
N
1606-XLP95E
24-
28V
DC ok
120-240V AC
2 Brown
5 Gray
NC
NC
1 White
6 Pink
4 Yellow
8 Red
Connect 8 to 4
to make UN a Tx
3 Green
7 Blue
FE
L1 L2 L3
M
K2
K1
Primary Protective Earth Ground
IMPORTANT EDM must be activated in the GuardShield safety light curtain and the
application requires safety contactors (K1 and K2). EDM feedback is only
available on eight-pin plug-ins.
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