Honeywell Excel 5000 Open System, Excel 5000 Open System 10 FTT/LPT 209541 B Installation Instructions Manual

Excel 10 FTT/LPT 209541 B

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

Repeater Installation Instructions

, form 95-7555, for

Q7740A,B FTT

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.

TERMINATION MODULE

,

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

termination

; connect the brown and orange to the E-Bus

when the network requires double termination

single

. 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

single termination

a

.

Fig. 2. FTT/LPT termination module wiring for

termination

network topologies

.

single

®

U.S. Registered Trademark

Copyright

1997 Honeywell Inc. • All Rights Reserved

©

95-7554

EXCEL 10 FTT/LPT 209541 B TERMINATION MODULE

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

termination

. Fig. 5 shows the physical connection of the

double

modules for a double termination network. 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.

Fig. 3. Physical connection of module for a

termination

BROWN

network

YELLOW

ORANGE

.

E-BUS

M12200

single

,

Fig. 4. FTT/LPT termination module wiring for

termination

BROWN

ORANGE

YELLOW

network topology

E-BUS E-BUS

BROWN

ORANGE

YELLOW

Fig. 5. Physical connection of modules for a

termination

network

.

double

.

M12201

double

1/2

(13)

1. STRIP 1/2 IN. (13 MM) FROM WIRES
TO BE ATTACHED AT ONE TERMINAL. WITH PLIERS (A MINIMUM

Fig. 6. Attaching two wires at controller or wall module terminals.

2. TWIST WIRES TOGETHER

OF THREE TURNS).

3. CUT TWISTED END OF WIRES TO 3/16 IN. (5 MM)
BEFORE INSERTING INTO TERMINAL AND TIGHTENING
SCREW. THEN PULL ON EACH WIRE IN ALL TERMINALS
TO CHECK FOR GOOD MECHANICAL CONNECTION.

M8945

NOTE: The termination module is outside of the scope of the EMC directive and therefore does not require CE marking. This is

because the termination module is an RC filter (with only passive components.

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95-7554 J.D. 3-97

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