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 L
ON
M
ARK
®
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.
www.echelon.com
®
Typical Wiring Topologies Supported by the LPT-11 Link Power Transceiver
LPI-10
Single Termination Bus/Line
LPI-10
capability of the LPT-11 transceiver elimi-
nates the need for local power supplies
at each node, resulting in equipment and
labor cost savings.
Using the LPT-11 transceiver can save thou-
sands of hours of development time com-
pared with designing a custom transceiver.
The transceiver is designed to comply with
FCC Part 15, Level B, and CISPR 22 Level
B regulations, minimizing time consuming
and expensive laboratory transceiver test-
ing. As a UL, CSA, and TÜV recognized
component, the LPT-11 transceiver can be
integrated into a product with minimal ad-
ditional safety testing. The transceiver is
small enough to fit into virtually any appli-
cation, and is economically priced for OEM
applications of any volume.
Echelon offers a comprehensive range of
development tools, network interfaces,
routers, and network services tools to sim-
plify the task of designing products using
the LPT-11 transceiver. Technical support
for the transceiver is available through
Echelon’s LonSupport™ Premier technical
assistance program.
LPI-10
Termination
Double Termination Bus/Line
Star
LPI-10
LPI-10
Loop
Mixed
Should it be necessary to add more nodes
or wire runs in excess of 500 meters, link
power segments can be interconnected by
a router or a physical layer repeater.
Model 50040R-02 is compliant with the
European Directive 2002/95/EC on the re-
striction of the use of certain hazardous
substances (RoHS) in electrical and elec-
tronic equipment. The LPT-11 transceiver
includes an integral switching power supply
that requires minimal external components
to furnish +5VDC at up to 100mA. This
current is typically used to power a Neuron
Chip and application electronics, sensors,
actuators, and displays. The high current
LPT-11 System Block Diagram
Sensor
Actuator
+5VDC power
LPT-11
Device
FT 3120 / FT 3150
Smart Transceiver
Device
48VDC
Power
Supply
42.4VDC max.
To additional
LPT-11 or
FT 3120/
FT 3150
Smart
Transceiver
Devices
LPI-10
Interface
LPT-11
Device
FT 3120 / FT 3150
Smart Transceiver
Device
LPT-11
Device
www.echelon.com
®
LPT-11 Transceiver Pinout
Name
NET_A
NET_B
V+
INDUCTOR
VCC
GND
CLK
NC
TXD
RXD
NC
NC
NC
NC
Pin Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Function
Connection to TP network, polarity insensitive
Connection to TP network, polarity insensitive
Power supply input voltage
Power supply inductor connection
+5VDC power output for device operation
Power supply ground
Transceiver clock input from Neuron Chip
No Connect (not connected internally)
Neuron Chip CP1
Neuron Chip CP0
No Connect (not connected internally)
No Connect (not connected internally)
No Connect (not connected internally)
No Connect (not connected internally)
General Specifications
Function
Data Communications Type
Network Voltage
Application Current Output at Node
Free topology link power twisted pair transceiver with integral +5VDC power convertor
Differential Manchester coding
42.4VDC supplied by LPI-10 Link Power Interface Module. Nominal 48VDC input
to LPI-10 Interface provided by customer’s power supply
100mA @ 5VDC ± 10%
EMI
ESD
Radiated Electromagnetic Susceptibility
Fast Transient/Burst Immunity
Surge Immunity
Conducted RF Immunity
Listings
Clock Rates
Transmission Speed
Maximum LPT-11 Devices Per Segment
Designed to comply with FCC Part 15 Level B, EN55022 Level B, and CISPR 22 Level B
Designed to comply with EN 61000-4-2, Level 4
Designed to comply with EN 61000-4-3, Level 3
Designed to comply with EN 61000-4-4, Level 4 (network cable only)
Designed to comply with EN 61000-4-5, Level 3
Designed to comply with EN 61000-4-6, Level 3
Recognized by UL to Standards UL 60950, 2000 and CSA C22.2 No. 60950, 2000
Recognized by TÜV EN 60950
20, 10, 5, or
3
2.5 MHz input clock. Clock supplied by Neuron Chip and automatically configured by
the LPT-11
78 kilobits per second
128 with LPT-11 output of 5VDC @ 25mA
64 with LPT-11 output of 5VDC @ 50mA
32 with LPT-11 output of 5VDC @ 100mA
1
See User’s Guide for compatible cables
2
1000m (3,280 feet) maximum total wire with one repeater
2
500m (1,640 feet) maximum total wire with no repeaters
2
500m (1,640 feet) maximum node-to-node distance
2
4400m (14,430 feet) with one repeater
2
2200m (7,210 feet) with no repeaters
Polarity insensitive
High impedance when unpowered
Thru-hole pins (1.8mm spacing)
Termination in LPI-10 Link Power Interface Module
-40 to +85°C
-40 to +85°C
Network Cabling
Network Length in Free Topology
Network Length in Doubly Terminated
Bus Topology
Network Bus Polarity
Power-down Network Protection
Connector
Network Terminator
Operating Temperature
Non-operating Temperature
www.echelon.com
®
Operating Humidity
(non-condensing)
Non-operating Humidity
(non-condensing)
Packaging
25-90% RH @ 70°C
95% RH @ +70°C
Single In-line Package
Ordering Information
Product
LPT-11 Link Powered Twisted Pair Transceiver
L
on
W
orks
LPT-11 Link Power Transceiver User’s Guide
(order separately — not shipped with product)
L
on
W
orks
LPI-10 Link Power Interface Module User’ Guide
s
(order separately — not shipped with product)
Mechanical Dimensions
Echelon Model Number
50040-02, 50040R-02
078-0198-01
078-0104-01
Notes:
1. For compliance to the LonMark TP/FT-10 Channel, cable must comply with ANSI/TIA/EIA-568-A-1995 Category 5 requirements for 24 AWG unshielded
twisted-pair cable.
2. Network length varies depending on wire type. Level-4 wire used in examples. See LonWorks LPT-11 Link Power Transceiver User’s Guide, or Junction Box
and Wiring Guidelines for Twisted Pair LonWorks Networks, 005-0023-01 Rev. K or later, for detailed specifications.
3. Operation at 2.5MHz does not comply with LonMark guidelines for the TP/FT-10 channel. 1.25MHz operation is not supported.
i.LON, LonWorld, ShortStack, Panoramix, LonMaker, the Echelon logo, and the LonUsers logo are trademarks of Echelon Corporation registered in the United States and other countries. LonLink,
LonResponse, LonSupport, LONews, Open Systems Alliance, OpenLDV, Powered by Echelon, LNS Powered by Echelon, Panoramix Powered by Echelon, LonWorks Powered by Echelon, Net-
worked Energy Services Powered by Echelon, NES Powered by Echelon, Digital Home Powered by Echelon, Pyxos, and Thinking Inside the Box are trademarks of Echelon Corporation. Other
trademarks belong to their respective holders.
Disclaimer
Neuron Chips, Free Topology Twisted Pair Transceiver Modules, and other OEM Products were not designed for use in equipment or systems which involve danger to human health or safety or a
risk of property damage and Echelon assumes no responsibility or liability for use of the Neuron Chips or Free Topology Twisted Pair Transceiver Modules in such applications. ECHELON MAKES
AND YOU RECEIVE NO WARRANTIES OR CONDITIONS, EXPRESS, IMPLIED, STATUTORY OR IN ANY COMMUNICATION WITH YOU, AND ECHELON SPECIFICALLY DISCLAIMS ANY IMPLIED
WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
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