Fike TWINFLEX SRP, Инструкция по монтажу и пусконаладке

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TWINFLEX
®
SRP Remote Status Indicator Engineering and Commissioning Manual
14
Peripheral Bus Connections
Communication between the SRP Control Panel and RSI is established via a multi-drop RS-485
Peripheral Bus using 2-core 1.5mm
2
screened fire resistant cable (i.e. MICC, FP200, Firetuff, Firecell,
Lifeline or equivalent).
The maximum total
cable length from the Control Panel to an RSI is 500 metres
.
Up to 8 RSIs can be
used but they must all be within the maximum 500 metres cable length. The RSIs must be wired
A to A, B to B, Screen to Screen and so on. The peripheral bus must be run from the SRP Control
Panel to the first RSI, then to the second RSI and so on. The peripheral bus must not be spurred from
one central point.
SRP Control Panel Connector Board Peripheral Bus Connections
There are two sets of peripheral bus connections on the SRP Control Panel Connector Board. These
are connections A1/B1 and A2/B2. These are linked on the SRP Control Panel so either set can be
used for the Field Connections.
A 120Ω termination resistor must also be fitted across either A1/B1 or
A2/B2 on the last RSI as indicated in the diagram below.
Remote Status Indicator Back Board Peripheral Bus Connections
The last RSI on the network must have a
120Ω End of Line (EOL) resistor fitted across A and B
of the RSI PERIPHERAL BUS terminal
NOTE : A jumper wire MUST be installed between the Screen of the Power and the Screen of the
Peripheral Bus if power is provided by the SRP Control Panel.