The choice 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 given to choosing the right sensors.
For example, an individual determines which measuring principles are used for level measurement, which power supply should be provided to the device 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 form, whereas a cable is merely 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 often where unforeseen prospect of increasing machine availability are available. 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 due to faulty installation, handling and especially as a result of selection 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 your application.
For example, flexibility demands for cables found 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 due to the insufficient permanent leak tightness. For machine tools which are create in factory buildings, the simplest cable materials with a simple M12 connector are employed. In this instance, however, the use 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.
Speedy of cable assemblies with factory pre-assembled connectors also prevents failure risk through improper on-site assembly. It is therefore a fallacy that cables are the same and that any given cable with the sufficient amount of wires would work 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 link with sensors and PLC must meet. An individually matched wiring concept supplies a measurable increase of the device availability and higher safety during operation.
In the event you need assistance or consulting for specifying the right pressure sensor and associated cable / connector, feel absolve to contact us.