The choice of the right 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 quantity of attention is given to choosing the right sensors.
For example, the user determines which measuring principles are used for level measurement, which power ought to be provided to the machine 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 form, whereas a cable is only seen as a component which supposedly guarantees a trusted connection under all circumstances.
However, cables and connectors pose probably the most frequent resources of error. This is often where unforeseen prospect of increasing machine availability can be found. During my course 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 selection of an unsuited cable for the specific application. Principally, there is absolutely Serene for determining which cable and which plug connector is most beneficial suitable for the application.
For instance, flexibility demands for cables found in level probes for level measurement in deep wells aren?t high, whereas the demands on tensile strength along with 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 setup in factory buildings, the simplest cable materials with a simple M12 connector are employed. 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 raise 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 is suitable for an application.
In one of my previous articles, I drew up a brief overview of the most relevant criteria for choosing cables and connectors. Take your time in specifying a suitable cable for your 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.