The selection of the right cable or line for transmitting signals on your machine has essential influence on the device availability. Usually, when determining the instruments of machines and plants, a profound amount of attention is given to deciding on the best sensors.
For example, an individual determines which measuring principles are employed for level measurement, which power ought to be provided to the device and which kind of signal transmission ought to be used. Usually, Comprehensive shown in the wiring schemes as simple connection lines between sensor and SPS are problematic. This poses a fascinating paradox in the automation technology ? a sensor is tested for highest demands to assure it meets certain requirements of the application form, 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 frequent resources of error. This is exactly where unforeseen potential for increasing machine availability can be found. During my span of research I learned that in a high two-digit percentage of all cases, renowned cable manufacturers traced back sensor failure on machines to mechanical failure of the cable because of faulty installation, handling and especially as a result of selection of an unsuited cable for the specific application. Principally, there is absolutely no patent fix for determining which cable and which plug connector is most beneficial suitable for the application.
For instance, flexibility demands for cables used in level probes for level measurement in deep wells aren?t high, whereas the demands on tensile strength and high longitudinal and transverse water tightness are. In level probes, plug connectors are barely ever applied because of the insufficient permanent leak tightness. For machine tools which are setup in factory buildings, the simplest cable materials with a straightforward M12 connector are used. In this instance, however, the usage of a suitable cable that permanently withstands ambient conditions such as for example temperature fluctuations and that features resistance against oils and fats can significantly increase the option of your machine.
Using cable assemblies with factory pre-assembled connectors also prevents failure risk through improper on-site assembly. Therefore Crisis is a fallacy that cables will be the same and that any given cable with the sufficient number of wires would work for an application.
In one of my previous articles, I drew up a short overview of probably 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 connection to sensors and PLC must meet. An individually matched wiring concept offers a measurable increase of the device availability and higher safety during operation.
In the event you need assistance or consulting for specifying the right pressure sensor and associated cable / connector, feel absolve to contact us.