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 given to choosing the right sensors.
For example, the user determines which measuring principles are employed for level measurement, which power supply should be provided to the device 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 assure it meets the requirements of the application, 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 potential for increasing machine availability can be found. 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 because of faulty installation, handling and especially due to the choice of an unsuited cable for the precise application. Principally, there is no patent remedy for determining which cable and which plug connector is best suitable for the application.
For Painless , flexibility demands for cables used in level probes for level measurement in deep wells aren?t high, whereas the demands on tensile strength together with high longitudinal and transverse water tightness are. In level probes, plug connectors are barely ever applied due to the insufficient permanent leak tightness. For Explode which are setup in factory buildings, the simplest cable materials with a straightforward M12 connector are used. In this instance, however, the usage of a suitable cable that permanently withstands ambient conditions such as temperature fluctuations and that has 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 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 brief overview of probably 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 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 free to contact us.