Honeywell Excel 5000 System Series Installation Instructions
Termination module
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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 209541B 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/LPT 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.
BROWN
Fig. 1. 209541B 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. Fig. 3 shows the physical
connection of the module for a single termination network.
Fig. 4 shows the modules attached to a typical FTT/LPT
network for a double termination. Fig. 5 shows the physical
connection of the modules for a double termination network.
® U.S. Registered Trademark
Copyright © 1997 Honeywell Inc. • All Rights Reserved
Excel 10 FTT/LPT 209541B
YELLOW
ORANGE
TERMINATION MODULE
INSTALLATION INSTRUCTIONS
Double termination is only applicable when a network is wired
in a daisy-chain topology and the total wire length is greater
than 1640 ft (500m). Refer to the E-Bus Wiring Guidelines,
form 74-2865, for complete rules on network topology and
termination module locations.
DEVICE
TERMINATION
DEVICE
MODULE
SINGLY TERMINATED
DEVICE
TERMINATION
MODULE
DEVICE
DEVICE
DEVICE
DEVICE
DEVICE
DEVICE
DEVICE
TERMINATION
MODULE
MIXED
Fig. 2. FTT/LPT termination module wiring for single
termination network topologies.
DEVICE
DEVICE
DEVICE
DEVICE
DEVICE
DEVICE
STAR
DEVICE
DEVICE
DEVICE
DEVICE
DEVICE
DEVICE
TERMINATION
DEVICE
MODULE
DEVICE
DEVICE
LOOP
95-7554
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Summary of Contents for Honeywell Excel 5000 System Series
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Page 1: Before Installation
Fig. 4 shows the modules attached to a typical FTT/LPT network for a double termination. Fig. 5 shows the physical connection of the modules for a double termination network. ® U.S. Registered Trademark Copyright © 1997 Honeywell Inc. • All Rights Reserved 95-7554... - Page 2 CE marking. This is because the termination module is an RC filter (with only passive components. Home and Building Control Home and Building Control Products Helping You Control Your World Honeywell Inc. Honeywell AG Honeywell Plaza Böblinger Straße 17 P.O. Box 524 D-71101 Schönaich...