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Parallel connection of open collector outputs

Question

Question

KCV-4S is connected to APS4-12M-E.
I would like to add another KCV there.
How many counters can be connected with one proximity sensor?

Reply

Reply

The number of counters that can be connected to the output of the proximity sensor is determined by the maximum switching current of the proximity sensor and the input current of the counter.
The rated operating current of APS4-12M-E is 50mA at maximum.
In the case of negative logic, the input current of KCV-4S is about 7.3mA because the input resistance is 3.3KΩ and the pull-up voltage is 24V.
Therefore, up to 50mA / 7.3mA ≒ 6 units can be connected.

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Output current Input current

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