MICRO-EPSILON thermoMETER CTL Series - Open-Collector Output; AL2

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Outputs and Inputs
thermoMETER CTL
8.5.3 Open-collector Output / AL2
+24 V
GND
+24 V +24 V
GND
AL 2
CT / CTlaser LED Relais
Fig. 28 Open-collector output / AL2 Fig. 29 Open-collector output / AL2 switching
diagrams
i
The transistor acts as switch. In case of an alarm, the contact is closed.
Always one load unit (relay, LED or a resistor) must be connected.
The alarm voltage (here 24 V) must not be connected directly to the alarm output (short circuit).
Prevent the load from exceeding a maximum of 50 mA on the output.
> Destruction of the output