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The selection of the proper cable or line for transmitting signals on your machine has essential influence on the machine availability. Usually, when determining the instruments of machines and plants, a profound quantity of attention is directed at choosing the right sensors.
For example, an individual determines which measuring principles are used for level measurement, which power supply ought to be provided to the machine and which kind of signal transmission should be used. Usually, the cables shown in the wiring schemes as simple connection lines between sensor and SPS are problematic. This poses an interesting paradox in the automation technology ? a sensor is tested for highest demands to assure it meets certain requirements of the application, whereas a cable is merely regarded as a component which supposedly guarantees a reliable connection under all circumstances.
However, cables and connectors pose one of the most frequent resources of error. This is exactly where unforeseen prospect of increasing machine availability are available. During Obsession of research I learned that in a higher two-digit percentage of most cases, renowned cable manufacturers traced back sensor failure on machines to mechanical failure of the cable because of faulty installation, handling and especially because of the selection of an unsuited cable for the specific application. Principally, there is absolutely no patent remedy for determining which cable and which plug connector is most beneficial suitable for your application.
For example, flexibility demands for cables found in level probes for level measurement in deep wells aren?t high, whereas the demands on tensile strength together with high longitudinal and transverse water tightness are. In level probes, plug connectors are barely ever applied as a result of lack of permanent leak tightness. For machine tools which are set up in factory buildings, the easiest cable materials with a straightforward M12 connector are employed. In this instance, however, the use of a suitable cable that permanently withstands ambient conditions such as temperature fluctuations and that has resistance against oils and fats can significantly raise the option of your machine.
Using cable assemblies with factory pre-assembled connectors also prevents failure risk through improper on-site assembly. It is therefore a fallacy that all cables will be the same and that any given cable with the sufficient amount of wires is suitable for an application.
In another of my previous articles, I drew up a short overview of the most relevant criteria for choosing cables and connectors. Invest some time in specifying a suitable cable for your application. Take into account the demands your plug link with sensors and PLC must meet. An individually matched wiring concept supplies a measurable increase of the device availability and higher safety during operation.
In the event you need assistance or consulting for specifying a suitable pressure sensor and associated cable / connector, feel absolve to contact us.