Specifications

Presence Sensing Safety Devices
Safety Light Curtain Interfaces
2-80
Visit our website: www.ab.com/catalogs
Publication S117-CA001A-EN-P
120V AC Power Supply and Safety Relay
General Principles
2-Opto-electronics
Safety Switches Operator
Interface
Logic Power
R
Typical Wiring Diagram
M8400 Single Relay
K3
K4
L2
L1
K4
K3
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
L
N
K3
K3
K4
K4
+24V
Light Curtain
Interface Box
Transmitter
Receiver
GND +24V PE TEST
TEST
+24V
PE GND
OSSD2
OSSD1
OR
Relay Man. Restart
(Jump 15 & 16, 17 & 18)
Relay Auto Restart
(Jump 16 & 17)
Relay Man. Restart w/
MPCE Feedback
(N.C. contacts between
15 & 16, Jumper 17 & 18)
Relay Auto Restart w/
MPCE Feedback
(N.C. contacts
between 16 & 17)
(Jumper required if
mounts not used)
Arc
Suppression
Devices
Man. Restart
Internal to
Light curtain
(Jumper 16 & 17)
To red wire of
Safe/GuardShield
Receiver
Fuse Fuse
Machine
Prime
Mover
Elements
Fuse
Fuse
Wiring diagram is not intended to be used for installation purposes.