Honeywell Excel 5000 System Series User manual

® U.S. Registered Trademark

Excel 10 FTT/LPT 209541B

TERMINATION MODULE

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 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.

YELLOW

BROWN ORANGE

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.

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.

TERMINATION

MODULE

DEVICE

DEVICE DEVICE DEVICE

DEVICE

TERMINATION

MODULE

DEVICE

TERMINATION

MODULE

DEVICE

DEVICEDEVICE

DEVICE

TERMINATION

MODULE

DEVICE

SINGLY TERMINATED

STAR

MIXED

LOOP

Fig. 2. FTT/LPT termination module wiring for single

termination network topologies.

EXCEL 10 FTT 209541B TERMINATION MODULE

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

Minneapolis, MN 55408-0524 Phone (49-7031) 637-01

Fax (49-7031) 637-493

Printed in USA.

95-7554 Rev. 2-97

BROWN YELLOW

]

E-BUS

ORANGE

Fig. 3. Physical connection of module for a single

termination network.

TERMINATION

MODULE

DEVICE

DEVICE DEVICE DEVICE

DEVICE

TERMINATION

MODULE

(DAISY CHAINED) (DAISY CHAINED)

Fig. 4. FTT/LPT termination module wiring for double

termination network topology.

BROWN

[

ORANGE

E-BUS

BROWN ORANGE

]

E-BUS

YELLOW YELLOW

Fig. 5. Physical connection of modules for a double

termination network.

1/2

(13)

STRIP 1/2 IN. (13 MM) FROM WIRES

TO BE ATTACHED AT ONE TERMINAL.

1. 2. TWIST WIRES TOGETHER

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.

M8945JD

CONTROLLER OR

WALL MODULE

E-BUS

CONNECTOR

TERMINALS

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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