Installation Instructions

PX/QX/RX Version 4.30 Installation Manual – Issue C
- 32 -
Bus Isolator
The XiB bus isolator can be used to both extend the maximum XiB cable length and to electrically
isolate parts of the bus. The maximum bus extension will depend on the cable type and the supply
voltage. Up to 2 bus isolators may be connected in series, giving a total bus length of 5.1km using
standard un-screened cable. Refer to the Technical Specification section for the cable specification.
Bus Isolator
PCB Connections
B+ - A
XiB Bus In
(from control
panel)
+
-
A B
XiB Bus out
F800mA
via FS1
Aux. PSU