LPT-11 Datasheet, PDF (1/4 Pages) List of Unclassifed Manufacturers – LPT-11 Link PowerTwisted Pair Transceiver

LPT-11 Link Power
®
Twisted Pair Transceiver
Models 50040-02 and 50040R-02
Feature
• Complete LONWORKS^® free topology communication transceiver
and power supply in a miniature SIP
• Receives both network data and power on a single twisted wire pair
• Provides unmatched electrical noise isolation
• Polarity insensitive network wiring
• 78 kilobits per second network bit rate for distances up to 500 meters
(free topology) and up to 2200 meters (doubly terminated bus topology)
• Supports free topology star, bus, and loop wiring
• Compatible with the FTT-10A Free Topology Transceiver, as well as the FT
3120^®/FT 3150^® Smart Transceivers
• Supplies 5VDC @ 100mA maximum for node power
• Meets the requirements of the LONMARK^® TP/FT-10 channel type
Description
The LPT-11 Link Power Twisted Pair Transceiver provides a simple, cost-effective method of
adding a network-powered LonWorks transceiver to any Neuron® Chip-based control system.
The link power system sends power and data on a common twisted wire pair, and allows the
user to install LPT-11 transceivers with virtually no topology restrictions. Power is supplied by
a customer-furnished nominal 48VDC power supply, flows through the LPI-10 Link Power In-
terface Module where it is regulated to 42.4VDC, and then passes onto the twisted wire pair.
The LPT-11 transceiver eliminates the need to use a local power supply at each node since
node power is sent from a central power supply over the same twisted wire pair that handles
network communications.
The LPT-11 transceiver consists of a Single In-Line Package (SIP) containing a 78kbps differen-
tial Manchester coded communication transceiver, a power supply that extracts power from
the twisted pair network, and connections for the Neuron Chip Communications Port (CP)
lines and twisted pair network.
The LPT-11 transceiver supports free topology wiring, freeing the system installer from the
need to wire in a bus topology. Star, bus, and loop wiring are all supported by this architec-
ture. 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 alleviating the need for the installer to follow strict rules about stub lengths.
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