The selection of the proper cable or line for transmitting signals on your machine has essential influence on the device availability. Usually, when determining Soaring of machines and plants, a profound amount of attention is given to choosing the right sensors.
For example, an individual determines which measuring principles are employed for level measurement, which power 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 assure it meets the requirements of the application form, whereas a cable is only seen as a component which supposedly guarantees a reliable connection under all circumstances.
However, cables and connectors pose probably the most frequent sources of error. This is exactly where unforeseen potential for increasing machine availability are available. 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 because of the selection of an unsuited cable for the specific application. Principally, there is no patent remedy 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 also high longitudinal and transverse water tightness are. In level probes, plug connectors are barely ever applied as a result of insufficient permanent leak tightness. For machine tools which are setup in factory buildings, the simplest cable materials with a simple M12 connector are used. In this instance, however, the usage of the right cable that permanently withstands ambient conditions such as temperature fluctuations and that features resistance against oils and fats can significantly increase the option of your machine.
The usage of cable assemblies with factory pre-assembled connectors also prevents failure risk through improper on-site assembly. Therefore it is 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 Revengeful of my previous articles, I drew up a brief overview of probably the most relevant criteria for choosing cables and connectors. Take your time in specifying a suitable cable for the application. Think about the demands your plug link with sensors and PLC must meet. An individually matched wiring concept supplies a measurable increase of the machine 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 free to contact us.