Use and maintenance of the output of the PLC unit Part 1
1. Unit Contact Output.
Contact Output for the maintenance of essential. When it is time to use one of relay contacts page and then the resistance will be more The more frequently cut. The high volume flows. Lifetime of relay contacts page just so short. Thus, during the re layout output to use it regardless of load current to be output to relay to the cut with Be very careful and to consider the application output to the relay unit is used in the circuit. In the event that leads to the load inductor (coil), which in this case. Moment of contacts separated abruptly Magnetic field in the coil is reduced. This will cause a voltage proportional to flow rate changes. Own rhythm and this is the voltage across the contacts page. Which was high enough to destroy the contacts page at a glance. Pressure that occurs when the contacts page, we first separate the pressure “Transient” as the voltage during a short period at the beginning. Because of this pressure may be high enough to damage the contacts page. Therefore, if a load inductor (coil) to the more external protection circuit. With many different types depending on the voltage used in editing Horizontal resolution which can be viewed from the circuit as shown. (more…)
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