Honeywell 1061 - Manual
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Table of Contents:
- Page 2 – ® BUS WIRING GUIDELINES; Transmission Specifications; maximum total wire length
- Page 3 – Cable Parameters
- Page 4 – Cable Termination; double termination network topology
USER’S GUIDE
Put Bar Code Here
74-2865—04
L
ON
W
ORKS
® Bus
Wiring Guidelines
HONEYWELL CABLE 3252, 3253, 1061,
AK3797, AK3798, AK3799
INTRODUCTION
The Free Topology Transceiver (FTT) supports polarity
insensitive, free topology wiring. This frees the system
installer from wiring using a specific bus topology. T-tap, star,
loop, and mixed wiring topologies are all supported by this
architecture. Free topology wiring reduces the time and
expense of system installation by allowing the wiring to be
installed in the most expeditious manner. It also simplifies
network expansion by eliminating restrictions on wire routing,
splicing, and device placement.
A FTT network may comprise multiple segments (L
ON
W
ORKS
Bus sections containing from one to sixty devices, each
device having a Neuron® ID to validate) separated by
physical layer repeaters or routers.
FTT networks are very flexible and convenient to install and
maintain, but it is imperative to carefully plan the network
layout and create and maintain accurate documentation. This
will aid in compliance verification and future expansion of the
FTT network. This will also minimize unknown or inaccurate
wire run lengths, node-to-node (device-to-device) distances,
node counts, total wire length, inaccurate repeater/router
locations, and misplaced or missing terminations.
APPLICATIONS
Free topology architecture allows the user to wire the control
devices with virtually no topology restrictions.
Unlike bus wiring designs, the FTT system uses a free
topology wiring scheme that supports T-tap, star, loop, mixed,
and/or daisy-chain (see Fig. 1). This design has many
advantages. First, the installer is free to select the method of
wiring that best suits the installation, reducing the need for
advanced planning and allowing last minute changes at the
installation site. Second, if installers have been trained to use
one style of wiring for all installations, free topology
technology can be introduced without requiring retraining.
Third, retrofit installations with existing wiring plans can be
accommodated with minimal, if any, rewiring. This capability
ensures that FTT technology can be adapted to both old and
new projects, widening the potential market for FTT based
products. Finally, free topology allows FTT systems easy
future expansion by tapping into the existing wiring where it is
most convenient to do so. This reduces the time and expense
of system expansion, and from the customers’ perspective,
keeps down the life cycle cost of the free topology network.
Fig. 1. Typical wiring topologies
supported by the FTT System.
TERMINATION
MODULE
TERMINATION
MODULE
DEVICE
DEVICE
DEVICE
TERMINATION
MODULE
TERMINATION
MODULE
DEVICE
DEVICE
DEVICE
MIXED
LOOP
DEVICE
DEVICE
DEVICE
DEVICE
DEVICE
DEVICE
DEVICE
DEVICE
DEVICE
DEVICE
DEVICE
DEVICE
DEVICE
DEVICE
SINGLY TERMINATED
STAR
DEVICE
DEVICE
DEVICE
DEVICE
DEVICE
M12197
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Summary
L ON W ORKS ® BUS WIRING GUIDELINES 74-2865—04 2 System expansion is simplified by the use of physical layer repeaters and routers. The Q7740A 2-Way or Q7740B 4-Way devices perform a repeater function, and the Q7751A operates as a router. See Fig. 2. If a L ON W ORKS Bus segment grows beyond the max...
L ON W ORKS ® BUS WIRING GUIDELINES 3 74-2865—04 Table 1. Daisy-chain FTT Network Bus Topology Transmission Specifications (Doubly Terminated). NOTES: — See Table 2 for singly terminated FTT network bus topology transmission specifications. — See Tables 3 and 4 for a list of Honeywell provided FTT d...
L ON W ORKS ® BUS WIRING GUIDELINES ® U.S. Registered Trademark© 2008 Honeywell International Inc.74-2865—04 K.K. Rev. 11-08 Automation and Control Solutions Honeywell International Inc. Honeywell Limited-Honeywell Limitée 1985 Douglas Drive North 35 Dynamic Drive Golden Valley, MN 55422 Toronto, On...
