The choice 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 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 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 make sure it meets certain requirements of the application, whereas a cable is merely regarded as a component which supposedly guarantees a trusted connection under all circumstances.
However, cables and connectors pose one of the most frequent resources of error. This is often where unforeseen potential for increasing machine availability are available. 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 because of faulty installation, handling and especially as a result of choice of an unsuited cable for the precise application. Principally, there is absolutely no patent fix for determining which cable and which plug connector is most beneficial suitable for your 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 and also 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 set up in factory buildings, the easiest cable materials with a simple M12 connector are employed. In Audacity , 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 use 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 amount of wires would work for an application.
In one 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 your application. Take into account the demands your plug link with sensors and PLC must meet. An individually matched wiring concept offers a measurable increase of the machine availability and higher safety during operation.
Should you need assistance or consulting for specifying the right pressure sensor and associated cable / connector, feel free to contact us.