Installation guide

Extending the Island Bus
890USE17100 September 2003 67
Installing Extension Segments of Advantys STB Island Modules
Preliminary
Considerations
An island bus can support up to six extension segments of Advantys STB I/O
modules in addition to the primary segment. Extension segments may be installed
on the same or on separate DIN rails. The BOS module is connected via an STB
XCA 100x bus extension cable to the previous segment or preferred module. You
can use the configuration software to design your island or use information from the
I/O book to do a design on paper.
How to Build an
Extension
Segment
In all aspects except one, an extension segment is built the same way as the primary
segment. Instead of using a NIM in the first location, an STB XBE 1200 BOS
module is installed.
The rest of the modules are assembled the same as in a primary segment. The
second module is a PDM followed by a voltage group of I/O modules.
The last device in the segment may be:
an STB XMP 1100 termination plate, if this is the end of the island bus
an STB XBE 1000 EOS module, if the island bus is to be extended to a preferred
module or to another segment of STB I/O
an STB XBE 2100 CANopen extension module followed by a STB XMP 1100
termination plate
How to Extend
the Island Bus
Use the following procedure to extend the island bus from one segment to another
segment:
Note: The BOS module mounts in a special size 2 base, the STB XBA 2300, which
is designed to deliver logic power across the extension island backplane. Just as
with the NIM, a BOS module needs to be connected to an external 24 VDC power
supply.
1 Make sure that an STB XBE 1000 EOS module is in the last (rightmost) position
in the previous segment.
2 Install an STB XBE 1200 BOS module (in an STB XBA 2300 base) in the first
position in the extension segment.
3 Install the appropriate PDM (in an STB XBA 2300 base) next to the BOS
module.
4 Connect the EOS module in the previous segment to the BOS module in the
extension segment with a length of STB XCA 100x bus extension cable. Make
sure the connectors are seated firmly into their respective receptacles.