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Unformatted text preview: e technology © Festo Didactic GmbH & Co. KG • FP 1110 149 10. Connection and circuit technology 10.3.3 Parallel connection of proximity sensors using three-wire technology
Parallel connection of proximity sensors in three-wire technology can be achieved
without any problems. The following points must be observed:
• In the unswitched status, the low residual currents of the parallel connected
proximity sensors accumulate (simultaneous use of mechanical contacts and
proximity sensors is possible).
• If proximity sensors with an output stage in the form of an open-collector circuit
are used, then there is no mutual effect. In the case of proximity sensors with
different switch outputs, decoupling diodes are necessary (see Fig. 10.3.2). The
diodes are usually integrated in the sensor for the purpose of reverse polarity
BU(3) + 24 V DC L 0V
Load (L) Fig. 10.3.2: Parallel connection in three-wire technology (DC) Direct current three-wire proximity sensors can be parallel...
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This note was uploaded on 11/01/2012 for the course CHEMICAL 102 taught by Professor Jamesrodriguez during the Spring '12 term at Universidad Politécnica de Cartagena.
- Spring '12