Innotech Genesis V4 System - Manual (Page 47)

Installation Instructions for Innotech Genesis Systems
Edition 011100 3-21
Figure 3-10 shows how to connect a two-cable Comms network to a module. If the module
has only one RS485 Comms cable connected to it, the cable screen must be connected to
S1. If two Comms cables are fitted, the screen of the second cable must be connected to the
S2 terminal. Screens must not be connected to each other.
Figure 3-10. RS485 Comms Cable Connections.
3-4.2.3. RMI Remote Module Interface. The RMI (Figure 3-11) provides an
interface between the controller and the other REMs. It is connected to the controller by
way of the LEM/REM Connector and uses an RS485 link to communicate with the REMs.
The RMI is designed to be located within 100mm of the controller. A controller can have
only one RMI connected to it.
The RMI does not have a power connection block because the module receives 5Vdc
operating power from the controller through the LEM Cable.
The 10-pin ribbon cable plug for connecting the RMI to the controller is at the upper left
side of the module.
The four-terminal connector block at the lower left corner of the module is the RS485
Comms cable connection block. The End of Cable Jumper is to the right of the RS485
connection block.
Terminal 3 in the lower right corner of the RMI is an earth connection point that provides
protection for the Comms cable and screens on the RMI. Connect the electrical earth cable
between Terminal 3 and a solid earth. This may be the earth bus bar of the switchboard
cabinet or the cable that earths the frame of the equipment the RMI is installed in. Only one
of the RMI’s two earth terminals need be used; the two terminals are connected to each
other.
CABLE #1 CABLE #2
S1 S2
+
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