Donaldson Torit Checker board Installation, Operation, Service And Replacement Part Information page 17

Signal Terminal
The Signal Terminal provides a way to export a
logic signal to a PLC from a transistor-type
optocoupler. Any fault light, except the Service
Interval light and the unlabeled lights, causes the
ground
100-240 Volt AC
ground
100-240 Volt AC
optocoupler to pass a DC logic signal to a
connected PLC for approximately 0.5 seconds.
Typical circuits to use this signal are illustrated in
Signal Terminal.
- +
signal
100-240V AC DC OUT DC IN
L N 24-V 0-V COM
PLC Sensor DC Power Supply
-
+
100-240V AC DC OUT DC IN
L N 24-V 0-V COM
PLC and an External DC Power Supply
Signal Terminal
Checker board Control Panel
0 1 2 3 4
- +
signal
0 1 2 3 4
5 6 7 10
5 6 7 10
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