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Outputs and Inputs
thermoMETER CT
8.5.3
Open Collector Output / AL2
+24 V
GND
+24 V
+24 V
GND
AL 2
CT / CTlaser
LED
Relais
Fig. 26 Open collector output / AL2
Fig. 27 Open collector output / AL2 circuit
diagram
i
The transistor acts as a switch. In case of alarm, the contact is closed.
A load/consumer (relay, LED or a resistor) must always be connected.
The alarm voltage (here 24 V) must not be connected directly to the alarm output (short circuit).
Avoid exceeding the maximum load of 50 mA on the output.
> Destruction of the output