Excel 10 FTT/LPT 209541B
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
form 74-2865, for complete rules on network topology and
termination module locations. Refer to the
Repeater Installation Instructions
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.
E-Bus Wiring Guidelines
Q7740A,B FTT
, form 95-7555, for
TERMINATION MODULE
,
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
termination
when the network requires
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
; connect the brown and orange to the E-Bus
double termination
.
single
. In either
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 209541B 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
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.
BROWN
YELLOW
Fig. 3. Physical connection of module for a
termination
network.
ORANGE
double
,
E-BUS
M12200
single
Fig. 4. FTT/LPT termination module wiring for
termination
BROWN
ORANGE
YELLOW
network topology.
E-BUS
E-BUS
ORANGE
YELLOW
BROWN
Fig. 5. Physical connection of modules for a
termination
network.
double
M12201
double
1/2
(13)
STRIP 1/2 IN. (13 MM) FROM WIRES
1. 2. TWIST WIRES TOGETHER
TO BE ATTACHED AT ONE TERMINAL.
WITH PLIERS (A MINIMUM
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
Fig. 6. Attaching two wires at controller or wall module terminals.
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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Honeywell Inc. Honeywell Limited-Honeywell Limitee Honeywell AG
Honeywell Plaza 155 Gordon Baker Road Boblinger Straβe 17
P.O. Box 524 North York, Ontario D-71101 Schomaich
Minneapolis, MN 55408-0524 M2H 3N7 Phone (49-7031) 637-01
Fax (49-07031) 637-493
95-7554 J.D. 3-97 Printed in Mexico
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