Connection of S800 I/O Station and Advant Controller 70 to Twisted Pair Media The S800 I/O Station and the Advant Controller 70 connects to the Advant Fieldbus 100 via terminals on its front. When single media is used it must be connected to line 1, (X2). See Figure 65 for connection details.Connection of S800 I/O Station and Advant Controller 70 to Twisted Pair Media with Redundant Cables The S800 I/O Station and the Advant Controller 70 connects to the Advant Fieldbus 100 via the terminals on its front. When redundant media is used the Advant When connecting a station to the twisted pair bus the incoming and outgoing cable can either be connected directly to the terminal header or via the connection unit TC505/TC506. The TC505/TC506 is typically used when the station is mounted in a cabinet. The TC505/TC506 connection unit is mounted on a DIN rail in the cabinet.
TX507 Capacitive Decoupling Unit
The TX507capacitive decoupling unit shall be mounted at the cable entrance in cabinets for Advant Controller 400 Series and Advant Controller 110. The TX507 units is used for capacitive decoupling of shields of communication cables. One TC507 unit can be used for maximum four communication cables. The purpose with the TX507 unit is to decrease emission levels.When connecting a station to the twisted pair bus with redundant cables the incoming and outgoing cables can either be connected directly to the terminal header or via the connection unit TC505. TC505 is typically used when the station is mounted in a cabinet. The TC505 connection unit is mounted on a DIN rail in the cabinet.
Termination and Grounding of Twisted Pair cables
Termination of the twisted pair cable is performed with a pre-designed termination unit. The termination must have the same resistance as the cable used. For example, the 150 ohm cable, IBM Type 1, is terminated with the 150 ohms termination unit TC501V150.The bus cable must be grounded, but in one end only. This is done by grounding the termination unit GND wire. Figure 69 illustrates the termination of the Advant Fieldbus 100 twisted pair cable. It shows the termination in the first and the last stations. At the first station the terminator GND wire is connected to ground. At the last station the terminator GND wire is not connected at all. It is only the outermost, that is the first and the last stations, on the bus segment that are terminated.