Honeywell Excel 5000 Open System Installation Instructions

BEFORE INSTALLATION

E-Bus Free Topology Transceiver (FTT)/Linked Power
Transceiver (LPT) networks require termination. Depending
on the network topology, one or more FTT/LPT Termination
Modules may be required, see Fig. 1. If an FTT Repeater
or a LPT device is required in the network, their on-board
terminators can be used in place of the 209541 B
Termination Module. Refer to the E-Bus Wiring Guidelines ,
form 74-2865, for complete rules on network topology and
termination module locations. Refer to the Q7740A,B FTT
Repeater Installation Instructions , form 95-7555, for
information on enabling the on-board network terminators.
FTT networks are very flexible and convenient for
installation and maintenance. However it is imperative to
carefully plan the network layout, and create and maintain
accurate layout documentation.
Fig. 1. 209541 B FTT/LPT Termination Module .

INSTALLATION

The FTT/LPT Termination Module can be attached to the
network at a controller node (the easiest place); In a wall
module that is attached to standard utility junction box (the
module will not fit in a 60 mm junction box); At a wiring
junction (using wire nuts). See Fig. 6 when connecting two
wires at a controller or wall module terminal. If the
termination module must be located at a surface mounted
wall module, and does not fit inside the wall module
housing, extend a pair of E-Bus wires from the wall module
back to the nearest junction box or controller, and wire in
the termination module. The module has three lead wires,
but only two are attached to the E-Bus network .To install
the termination module, connect the brown and yellow
wires to the E-Bus when the network requires single
termination; connect the brown and orange to the E-Bus
when the network requires double termination. In either
case, always cover the unused wire with a wire nut to
prevent potential grounding problems. As with other E-Bus
connections, polarity is not important. Fig. 2 shows the
module attached to typical FTT/LPT network topologies for
a single termination.
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Copyright © 1997 Honeywell Inc. • All Rights Reserved
Excel 10 FTT/LPT 209541 B
Fig. 2. FTT/LPT termination module wiring for single
TERMINATION MODULE
termination network topologies .
95-7554