These stray pulses can lead to malfunctions in

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Unformatted text preview: ables • If possible, error signal to be limited at source • Install interference voltage filter into the voltage supply 10.5 Connection of controllers, relay and display elements If the output of a proximity sensor is loaded as a result of a downstream connected device, the following must be observed: • Current consumption of the connected load should not exceed the permissible load current of the proximity sensor. Typical values for proximity sensor load currents range between 50 – 500 mA. • In order to guarantee reliable operation of the proximity sensor in the switched state, the resistance of the connected load should not be too high such as to impair the flow of the minimum load current. • Proximity sensors can emit irregular switching signals if the supply voltage is switched on or off, depending on whether the proximity sensor is attenuated or unattenuated. These stray pulses can lead to malfunctions in controllers downstream and must therefore be suppressed by using additional hardware or taken into account in the software programming of the controller. • If lamps are used b...
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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.

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