The selection of the right cable or line for transmitting signals on your 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 Repulsed , an individual determines which measuring principles are used for level measurement, which power 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 make sure it meets certain requirements of the application form, whereas a cable is merely regarded 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 can be found. During my course of research I learned that in a higher 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 choice of an unsuited cable for the precise application. Principally, there is absolutely no patent remedy for determining which cable and which plug connector is best suitable for the 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 along with high longitudinal and transverse water tightness are. In level probes, plug connectors are barely ever applied as a result of insufficient 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 cases like this, however, the usage of a suitable cable that permanently withstands ambient conditions such as for example temperature fluctuations and that has resistance against oils and fats can significantly increase 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 another of my previous articles, I drew up a brief 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.