Vanderbilt SPCK620, Руководство по установке и настройке

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10 Wiring the system
Wiring the X-BUS interface
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Vanderbilt
Installation & Configuration Manual A6V10276959
01.05.2016
detectors are monitored. This is achieved by connecting 1A, 1B on the controller to
2A, 2B on the first keypad or expander. The wiring continues with connection 1A,
1B to 2A, 2B on the next expander and so on to the last keypad or expander. The
last connection is 1A, 1B of the last expander to 2A, 2B of the controller. See wiring
configuration in the figure below.
1 Controller
2-4 Expanders
10.1.2 Spur configuration
NOTICE
SPC52xx/53xx/63xx supports 2 spurs (2 X-BUS ports).
SPC42xx/43xx supports 1 spur (1 X-BUS port).
NOTICE
All expanders/keypads are fitted with a termination jumper by default. In spur
configuration it is imperative to have these jumpers fitted.
The spur (or open loop) cabling method offers a high level of fault tolerance and
may be more convenient on certain installations. In the case of a X-BUS fault or
break, all expanders and detectors up to the fault continue to be supervised.
In this configuration, the SPC controller uses a single the X-BUS port (1A/1B or
2A/2B) to support a group of expanders. See wiring configuration in the figure
below. The last expander in an open loop configuration is not wired back to the
controller and can be identified by the fast LED flashing light (one flash every 0.2
seconds approx) when in Full Engineer programming.
In automatic mode, the expander numbering commences at the expander nearest
to the controller and ends with the expander connected farthest from the controller.
E.g. if 6 expanders are connected in an open loop configuration, then the nearest
expander on the X-BUS connection is expander 1, the second nearest expander is
2, etc. ending with the expander wired farthest from the controller, which is
expander 6.