Honeywell Excel 5000 System Series Installation Instructions Manual

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Contents

before installation

Honeywell Excel 5000 System Series Installation Instructions Manual Manual pdf 1 page image

® U.S. Registered TrademarkCopyright © 1997 Honeywell Inc. • All Rights Reserved 95-7554Excel 10 FTT/LPT 209541BTERMINATION MODULEINSTALLATION INSTRUCTIONSBEFORE INSTALLATIONE-Bus Free Topology Transceiver (FTT) / Linked PowerTransceiver (LPT) networks require termination. Dependingon the network topology, one or more FTT/LPT TerminationModules may be required, see Fig. 1. If an FTT Repeater or aLPT device is required in the network, their on-boardterminators can be used in place of the 209541B TerminationModule. Refer to the E-Bus Wiring Guidelines, form 74-2865,for complete rules on network topology and terminationmodule locations. Refer to the Q7740A,B FTT RepeaterInstallation Instructions, form 95-7555, for information onenabling the on-board network terminators.FTT/LPT networks are very flexible and convenient forinstallation and maintenance. However it is imperative tocarefully plan the network layout, and create and maintainaccurate layout documentation.YELLOWBROWN ORANGEFig. 1. 209541B FTT/LPT Termination Module.INSTALLATIONThe FTT/LPT Termination Module can be attached to thenetwork at a controller node (the easiest place); In a wallmodule that is attached to standard utility junction box (themodule will not fit in a 60 mm junction box); At a wiringjunction (using wire nuts). See Fig. 6 when connecting twowires at a controller or wall module terminal. If thetermination module must be located at a surface mountedwall module, and does not fit inside the wall module housing,extend a pair of E-Bus wires from the wall module back to thenearest junction box or controller, and wire in the terminationmodule. The module has three lead wires, but only two areattached to the E-Bus network .To install the terminationmodule, connect the brown and yellow wires to the E-Buswhen the network requires single termination; connect thebrown and orange to the E-Bus when the network requiresdouble termination. In either case, always cover the unusedwire 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 networktopologies for a single termination. Fig. 3 shows the physicalconnection of the module for a single termination network.Fig. 4 shows the modules attached to a typical FTT/LPTnetwork for a double termination. Fig. 5 shows the physicalconnection of the modules for a double termination network.Double termination is only applicable when a network is wiredin a daisy-chain topology and the total wire length is greaterthan 1640 ft (500m). Refer to the E-Bus Wiring Guidelines,form 74-2865, for complete rules on network topology andtermination module locations.TERMINATIONMODULEDEVICEDEVICE DEVICE DEVICEDEVICEDEVICEDEVICEDEVICETERMINATIONMODULEDEVICEDEVICETERMINATIONMODULE DEVICEDEVICEDEVICEDEVICEDEVICEDEVICEDEVICEDEVICEDEVICEDEVICEDEVICEDEVICETERMINATIONMODULEDEVICEDEVICEDEVICESINGLY TERMINATEDSTARMIXEDLOOPFig. 2. FTT/LPT termination module wiring for singletermination network topologies.

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