Target/Actuator 1
Target/Actuator 2
Target/Actuator 3
Switch 1
Switch 2
Switch 3
RTN
24V DC
Power
Supply
+24
1606-
XL120D
Green
Blue
Pink
Grey
Brown
Red
Yel
White
A2
440R-N23132
Initial conditions:
All switches are locked
Switch 1 receives unlock
command (guard door
can then be opened)
Lock/unlock
command
Switch 2 drops the 24 volts (red and
yellow) from Switch 1 OSSD outputs
Green LED ashes
Switch 3 drops the 24 volts (red and
yellow) from Switch 3 OSSD outputs
Green LED ashes
Pink
Grey
Brown
Red
Yel
White
Green
Blue
Pink
Grey
Brown
Red
Yel
White
Green
Blue
S11 41332313S12S52
S21 S22 42342414A1S34
125 ms100 ms75 ms0 ms
650 ms625 ms600 ms0 ms
Switch 1 guard door is
closed
Switch 1 OSSD outputs are
energized
Switch 2 OSSD inputs (red and yellow)
transition to 24V DC from Switch 1
OSSD outputs
Switch 2 OSSD outputs are energized
Switch 3 OSSD inputs (red and
yellow) transition to @$V DC from
Switch 2 OSSD outputs
Switch 3 OSSD outputs are energized