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Miniplex wiring (non-4100u), Overview, Wiring configurations – Tyco 4100U User Manual

Page 67: Class a wiring, Class b wiring, Miniplex wiring (non-4100u) -39, Overview -39, Wiring configurations -39, Class a wiring -39, Class b wiring -39

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The RIC must be connected to the host panel via RUI cabling. This section explains how
to wire the two together, and how to set up a system with multiple transponders connected
to the same host panel.

RUI cabling can be accomplished either through Class A or Class B wiring.

Class A wiring allows transponder cabinets to communicate with the FACP even in the
event of an open circuit somewhere in the loop. Class A wiring requires that two wires are
routed from the CPU motherboard to each RIC, and then back again to the CPU
motherboard.

Class B wiring allows “T” tapping, and therefore requires less wiring distance per
installation than Class A. Additionally, Class B wiring does not require end-of-line
resistors, because each RIC communicates directly to the CPU.

Make sure these prerequisites are accounted for before wiring:

• AS1670 allows the loss of a maximum of 40 detectors/addressable devices to be

caused by a single fault.

• All transponder cabinets are installed within 2500 feet (762 m) of the FACP.
• Conductors test free of all grounds.
• All wires are between 12 (3.309 mm

2

) and 18 AWG (0.8321 mm

2

), or as the

local code dictates.

To connect the RUI card to RICs using Class A wiring, read the following instructions
and refer to Figure 3-7, on the next page.

1. Route wire between 0.75 mm

2

and 4 mm

2

from the + (TB1-8) and - (TB1-6)

terminals on the Comms “A” block of the 562-856/565-217 RUI card to the
TB1-8 (+) and TB1-6 (-) terminals on the 565-233 RIC.

2. Route wire from the first RIC to the next one. Repeat for each transponder

cabinet within 2500 feet (762 m).

3. Route wire from TB1-7 (+) and TB1-5 (-) on the last RIC to + (TB1-4) and -

(TB1-2) on the Comms “B” block of the 562-856/565-217 RUI card.

To connect the RUI card to RIC II cards using Class B wiring, read the following
instructions and refer to Figure 3-7, on the next page.

1. Route wire between 0.75 mm

2

and 4 mm

2

from the + (TB1-8) and - (TB1-6)

terminals on the Comms “A” block of the 562-856/565-217 RUI card to the
TB1-8 (+) and TB1-6 (-) terminals on the 565-233 RIC.

2. Route wire from the first RIC to the next one. Repeat for each transponder

cabinet within 2500 feet (762 m).

Continued on next page

MINIPLEX Wiring (Non-4100U)

Overview

Wiring
Configurations

Class A Wiring

Class B Wiring