Communication line converter ACN12G is designed for bidirectional opto-isolated conversion between the RS-232C signals and the RS-422 or RS-485 signals. The typical application is connecting the PC-Computer to the net of the industrial control systems or connection of two or more control systems over a large distance. The way of use of the converter and its features are descibed in more details in the user manual, which you can
download from our WWW pages.
Features
For the connection of the RS-232C line the converter has one 9-pin D-SUB connector. For the connection of the RS-422/485 line there are two parallel connected 9-pin D-SUB connectors and one connector with screw terminals on the converter. Further the converter has two power supply connectors - the coaxial one is for the mains adapter, to the second one with the screw terminals can be the supply voltage 12 to 28 V DC or 12 to 20 V AC connected. By plugging the mains adapter into the coaxial connector the second screw terminal connector is automatically disconnected. The dimensions of the metal case of the converter are 50 x 130 x 100 mm. The transmission and reception are indicated by the green and yellow LEDs. Another yellow LED indicates connection of the transmitter to the RS-422/485 line. The transmitter connection (at RS-422) and send/receive switching (at RS-485) is done from the RS-232C line by means of the RTS signal. The transmitter can also be "hard" connected by means of the configuration switch (suitable for RS-422 connection between two stations). The RS-232C and RS-422/485 lines are galvanically separated each from the other and from the supply voltage.
Mechanical Construction
The converter ACN12G is delivered in two different subtypes. The
ACN12G-R subtype is designed for standard DIN-rail mounting into the switchgear (then there is usually the 24 V DC supply voltage used and therefore a mains adapter is not included in the delivery). The mains adapter is included in delivery of the desk-top
ACN12G-S subtype (it is usually used with the PC-Computer). Both subtypes can easily be mounted on the wall with screws. In all cases the connectors have a suitable position and the LED indicators are well visible.
