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 quantity of attention is directed at choosing the right sensors.
For example, the user determines which measuring principles are used for level measurement, which power supply ought to be provided to the device and which type of signal transmission ought to 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 the requirements of the application, whereas a cable is merely seen as a component which supposedly guarantees a trusted connection under all circumstances.
However, cables and connectors pose just about the most frequent sources of error. This is often where unforeseen potential for increasing machine availability can be found. During my course 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 fix for determining which cable and which plug connector is most beneficial suitable for your application.
For example, 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 as a result of lack of permanent leak tightness. For machine tools which are create in factory buildings, the simplest cable materials with a simple M12 connector are used. In cases like this, 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 increase the availability of your machine.
The utilization of cable assemblies with factory pre-assembled connectors also prevents failure risk through improper on-site assembly. Therefore it is a fallacy that cables will be the same and that any given cable with the sufficient number of wires is suitable for an application.
In เกรดวัดแรงดัน 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 the right cable for the application. Think about the demands your plug link with 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 a suitable pressure sensor and associated cable / connector, feel free to contact us.

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