The selection of the right cable or line for transmitting signals on your own machine has essential influence on the device availability. Usually, when determining the instruments of machines and plants, a profound level of attention is directed at choosing the right sensors.
For digital pressure gauge , an individual determines which measuring principles are employed for level measurement, which power supply should be provided to the machine and which kind 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 a fascinating 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 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 prospect of increasing machine availability are available. During my span 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 due to the choice of an unsuited cable for the precise application. Principally, there is no patent fix for determining which cable and which plug connector is most beneficial suitable for the 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 as well as high longitudinal and transverse water tightness are. In level probes, plug connectors are barely ever applied because of the lack of permanent leak tightness. For machine tools which are create in factory buildings, the simplest cable materials with a straightforward M12 connector are employed. 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 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 number of wires is suitable for an application.
In another 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 the 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 machine availability and higher safety during operation.
Should you need assistance or consulting for specifying a suitable pressure sensor and associated cable / connector, feel absolve to contact us.