Austdac TYPE SILBUS-A2WCCT2 Руководство пользователя - Страница 4

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1 GENERAL DESCRIPTION

The SILBUS repeater type SILBUS-A2WCCT2 is an explosion protected DIN rail-mounting
module that is used to increase the distance in a Dupline or SILBUS network. The repeater
can also be used as a 'power booster' in a section of a network that has many line powered
field devices connected to the network. The repeater may also be useful in attaching a long
stub to a network and limiting the effects of reflections. The repeater takes the SILBUS
pulse train from the primary network and reconstitutes the signal as the secondary network.
The primary network contains the host controller or channel generator.
The primary and secondary ports of the repeater are electrically independent or galvanically
isolated from each other. This isolation allows the SILBUS-A2WCCT2 to provide many
simple and highly effective solutions when used in installations involving intrinsically safe
and non-intrinsically safe SILBUS networks.
The repeater is housed within a DIN rail mounting enclosure measuring 100mm (W) x
75mm (H) x 110mm (D). The front panel is located between the two top of enclosure
mounted terminal blocks to provide a clear view of the operation indicating LED's. Two
yellow LED's are provided to indicate the status of the primary and secondary networks. A
third LED is provided to indicate the status of the secondary network power input port.

2 FRONT PANEL LAYOUT

The repeater front panel is located between the terminal blocks that form part of the
enclosure. Located in the top right hand corner of the front panel are the PRIMARY,
SECONDARY and POWER status LED's. The green power LED is illuminated whenever a
12 volt supply is connected to the repeater secondary power port. The yellow primary
status LED flashes to indicate the correct operation of the primary network. The yellow
secondary status LED flashes to indicate the correct operation of the secondary network.
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Photograph 1 SILBUS-A2WCCT2 front panel

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