The selection of the proper cable or line for transmitting signals on your own machine has essential influence on the machine 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 used for level measurement, which power supply should be provided to the machine and which type 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 make sure it meets certain requirements of the application form, whereas a cable is only regarded as a component which supposedly guarantees a trusted connection under all circumstances.
However, cables and connectors pose probably the most frequent sources of error. This is often where unforeseen prospect of increasing machine availability can be found. During my span of research I learned that in a high two-digit percentage of most cases, renowned cable manufacturers traced back sensor failure on machines to mechanical failure of the cable due to faulty installation, handling and especially because of the choice of an unsuited cable for the precise application. Principally, there is absolutely no patent remedy for determining which cable and which plug connector is most beneficial suitable for your application.
For เกจวัดแรงดันsumo , flexibility demands for cables found in level probes for level measurement in deep wells aren?t high, whereas the demands on tensile strength and also 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 set up in factory buildings, the simplest cable materials with a straightforward M12 connector are used. In cases like this, however, the usage of the right cable that permanently withstands ambient conditions such as for example temperature fluctuations and that features resistance against oils and fats can significantly increase the availability of your machine.
The usage of cable assemblies with factory pre-assembled connectors also prevents failure risk through improper on-site assembly. It is therefore a fallacy that all cables are the same and that any given cable with the sufficient amount 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. Take your 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 supplies 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 free to contact us.