Isolator type Rails installed, wiring wiring, this product is known as isolated Terminal, application installation in a Cabinet.
With the development of technology, increasing miniaturization of isolated terminal design, miniaturization is designed to take up less space. Of course, intensive users should be allowed to install, intensive installation is a cooling problem, the internal power consumption must be reduced. Internal power consumption values in selection should be noted.
Now appearing on the market, many CPU-core isolated Terminal, with field programmable and communication capabilities, with a high degree of flexibility for customers can reduce the amount of inventory, cut the backlog of capital. With CPU as core areas of isolated terminal will become the mainstream.
Elinker believes that for transmitter isolation there is another way, sensors and transmitters as a whole, but must be placed in the designated locations. General terminals placed in isolation in the central control room cabinets, Cabinet distribution of isolated terminal for field transmitter power, which to be decided according to the PLC interface to use.
Field test instrument and PLC interface may appear do not match, the sending device to a four-wire transmitter output 4~20mA, 4~20mA receiver interfaces for two-wire loop power supply if direct connection will create a conflict of power. Solution is the use of isolated terminal site 4~20mA receives and isolate, inside the isolated Terminal matches the output part to install a dedicated circuit for two-wire loop power supply interface and PLC.