ABB S800 I/O - Page 63

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Information regarding location of equipment may be found in the documentation
delivered with the equipment. Some general I/O Station information is presented
below.
• Install a DIN-rail sized to allow installation of the FCI, ModuleBus Modem,
MTUs, terminator and power supplies. Some extra DIN-rail should be allowed
for expansion or the moving of the FCI, ModuleBus Modem or MTUs during
maintenance.
• Install the FCI, ModuleBus Modem on the left end of the DIN-rail leaving
some room to the left to allow removable from the first MTU. If vertical
mounting is used, leave room to the top of the FCI for removal.
• Install the first MTU to the right (below) of the FCI or ModuleBus Modem and
all other MTUs to the right (below) of the preceding MTU.
• The last MTU (12 max.) connected to the FCI or ModuleBus Modem will have
the TB807 Terminator installed in the ModuleBus connector.
• Set each MTU mechanical keys to the correct setting for the I/O module that
will be located there.
• The power supply modules may be located on the same DIN-rail as the FCI or
ModuleBus Modem and the I/O modules, but should be always located on a
horizontal DIN-rail because of its weight.
• Install an end stop before the first module and after the last one on the DIN-rail.
• Then proceed with the electrical connections as necessary.
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The AF100 Fieldbus is connected to the terminals of a CI810 or a CI820.
The incoming fieldbus twisted pair cable is connected to a plug connector with four
terminals, two for the signal wires and two for the shield. The incoming and out
going fieldbus signal + conductors are terminated in the + terminal.
The - conductors are both terminated in the - terminal. The cable shield drain wires