N

EURO

L

OGIC

R

ESEARCH

C

ORPORATION

M ODEL 110A

FTT-10 M

ULTI

-S

EGMENT

P

HYSICAL

L

AYER

R

EPEATER

•

Extends wiring distance of FTT-10 LonWorks



Networks.

•

Up to 5 repeaters can be daisy chained together to create a multi-segment repeater of up to 10 channels. (New Feature)

•

Low cost alternative to routers configured as repeaters.

•

All wiring is to removable terminal blocks for ease of service.

•

Polarity insensitive AC/DC wide input voltage range.

•

Input power has over current and transient voltage suppression.

•

Termination for bus and free topology.

•

3.5 mm network jack for local installation tool connection.

•

Communication and power indicators to assist in field diagnostics.

•

DIN Rail mount enclosure is only 36 mm (1.42”) W x 90 mm (3.54”) L x 58 mm (2.28”) H

D

ESCRIPTION

Each Model 110A is a two-channel physical layer repeater for FTT-10 LonWorks networks. Data received on one channel is reconditioned and re-transmitted on the other channel. Each Model 110A effectively doubles the wiring distance and the number of nodes that can be placed on the network. On-board jumpers allow each channel to be terminated independently for bus or free topology.

A local 3.5 mm network jack allows a convenient way to connect an installation or diagnostic tool to the network without disconnecting any wires.

Three LED’s provide diagnostic information for troubleshooting. A green LED indicates when power is applied. Two red LED’s indicate when data is being received on each of the two local channels.

The Model 110A operates from a wide range of low voltage AC or DC power sources allowing it to be easily added to existing systems. The power input has transient voltage suppression as well as over current protection using a self-resetting fuse. This provides protection to the unit under most fault conditions.

The Model 110A is a drop in replacement to our Model 110 product. A new feature in the Model 110A allows multiple repeaters to be daisy chained together to create multi-segment repeaters. This is accomplished via a short jumper cable between units. Data received on one network segment is transmitted on all other network segments. For example, assume three Model 110As are daisy chained together. This equates to six total network segments since each repeater has two. Data received on any one network segment is reconditioned and sent on the other five network segments. This ability allows the user to create a field expandable multi-segment repeater from two to ten channels using a single product.

Note, the daisy chain feature of the Model 110A is not on the network side but actually takes place on a separate daisy chain bus between repeaters. This has several advantages. One, there is minimal delay between the received signal and the repeated signal. Even with a ten-segment repeater (5 Model 110As), the delay is equivalent to a single repeater. Two, each network segment is completely isolated from all other network segments. A short on one segment will only affect that segment and not the others.

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M ODEL 110A

N

ETWORK

O

VERVIEW

The TP/FT-10 network is designed to support free topology wiring, and will accommodate bus, star, loop, or any combination of these topologies. Network devices using FTT-10A transceivers can be located at any point along the network wiring. This capability simplifies system installation and makes it easy to add nodes should the network need to be expanded. Figures 1 through 5 present five different network topologies.

Termination

Figure 1 Single

Node

Node

T ERMINATION

Figure 2 Dual Terminated

Node

Node

Node

Node

Node

Node

Node

Node

Bus Topology

Terminated Bus Topology

Node

Node

Node

Termination

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M ODEL 110A

Figure 3 Star Topology

T ERMINATION

Node

Node

Figure 4 Loop Topology

Node

Node

Node

Node

Node

Termination

Node

Node

Node

Node

Node

Node

Node

T ERMINATION

Node

Figure 5 Mixed Topology

Node

Node

Node

Node

In the event that the limits on the number of transceivers or total wire distance are exceeded, then the Model

FTT-10 Physical Layer Repeater can be added to interconnect two segments and double the overall system capability.

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M ODEL 110A

S

YSTEM

P

ERFORMANCE AND

C

ABLE

S

ELECTION

TP/FT-10 network system and transmission specifications are outlined on the following pages. Both of these specifications must be met to ensure proper operation. The system designer may choose a variety of cables, depending on cost, availability, and performance. Performance may vary with cable type. The transmission specification depends on such factors as resistance, mutual capacitance, and the velocity of propagation. Currently, Echelon has documented system performance on the cable types shown in table 1.

Table 1 Cable Types and Typical Parameters

Cable Type

Belden 85102 single twisted pair stranded 19/29 unshielded 150 o C

Belden 8471 single twisted pair stranded 19/29 unshielded 150 o C

Level IV 22 awg twisted pair typically solid and unshielded

JY (ST) Y 2x2x0.8 4 wire helical twist solid shielded

Tia568 Category 5 24 awg twisted pair

Wire dia. /

AWG

1.2mm/16

1.3mm/a6

0.65 mm/22

0.8 mm/20.4

0.51 mm/24

R loop

Ω /km

28

28

106

73

168

CnF/km

56

72

49

98

46

Vprop %of c

62

55

67

41

58

If a shielded cable is used, the shield should be connected to earth ground via a single 470K

Ω

, 1/4 Watt,

10%, metal film resistor to prevent static charge build-up. Note that the following specifications are for one network segment. Multiple segments may be combined using repeaters as described in the network overview section to increase the number of nodes and distance.

S

YSTEM

S

PECIFICATIONS

• Up to 64 FTT-10/FTT-10A transceivers are allowed per network segment.

• LPT-10 transceivers may be used on network segments with FTT-10/FTT-10A transceivers, but are subject to additional constraints, particularly on distance. See the LPT-10 User's Guide for more information.

• The average temperature of the wire must not exceed +55°C, although individual segments of wire may be as hot as +85°C.

T

RANSMISSION

S

PECIFICATIONS

Table 2 Dual Terminated Bus Topology Specifications

Cable Type Maximum bus length Units

Belden 85102

Belden 8471

Level IV 22 awg

JY (St) Y 2x2x0.8

TIA Category 5

2700

2700

1400

900

900 meters meters meters meters meters

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M ODEL 110A

Table 3 Free Topology Specifications

Cable Type

Maximum node-to-node distance

Maximum total wire length

Belden 85102

Belden 8471

Level IV 22 awg

500

400

400

500

500

500

Units meters meters meters

JY (St) Y 2x2x0.8 320 500 meters

TIA Category 5 250 450 meters

The free topology transmission specification includes two components, which must both be met for proper system operation. The distance from each transceiver to all other transceivers and to the termination

(including the LPI-10 termination, if used) must not exceed the maximum node-to-node distance. If multiple paths exist, e.g., a loop topology, then the longest path should be used for the calculations. The maximum total wire length is the total amount of wire connected per segment.

W

IRING AND

I

NSTALLATION

All wiring is done via two sets of removable terminal blocks. The top terminal block has two positions and supplies power to the unit.

12-36 VDC or 9-26 VAC can be used. The terminals are polarity insensitive.

The bottom terminal block has four positions. Two terminals for each network. The terminals for one network are labeled Network A1 and Network B1. The second network channel is labeled Network A2 and

Network B2. The network wiring is polarity insensitive.

The network jack provides an access point for a network management tool for monitoring or configuration without the disturbing the network wiring.

Network Jack

Network A1

Network A2

Network B1

Network B2

Daisy Chain

Connectors

Vin B

Vin A

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M ODEL 110A

JP2 JP1

T

ERMINATION

J

UMPERS FOR

M

ODEL

110A FTT-10 R

EPEATER

JUMPER

JP1

JP2

FUNCTION

Side 1 Termination

Side 2 Termination

FREE

TOPOLOGY

(DEFAULT)

1-2

1-2

BUS

TOPOLOGY

2-3

2-3

NO

TERMINATION

Off

Off

M

ULTI

-S

EGMENT

D

AISY

C

HAINING

Up to 5 Model 110A Repeaters can be daisy chained to form a ten-channel repeater. To operate properly in multi-segment mode the user must observe the following installation requirements:

•

All repeaters must be placed next to each other and powered from the same power source.

•

All units that are daisy chained together must be powered. A unit that is connected on the daisy chain bus but not powered will cause other units to fail. There is no physical damage but the units will note operate properly.

•

The jumper cable is polarity sensitive and the jumper cable is keyed and should only plug onto the header in the proper orientation. If it feels that it is not going on correctly, chances are it is reversed.

•

Each segment should be properly terminated.

Each Model 110A is delivered with a short jumper cable attached to the two daisy chain jumper headers.

This is simply a convenient place to store it. It is not needed for proper operation if used as a standalone two-channel repeater. The two daisy chain headers provide identical connections. Two headers are needed to daisy chain between more than two units.

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M ODEL 110A

M

OUNTING

O

PTIONS

The Model 110A is housed in a very compact DIN rail mount enclosure that is only 36 mm (1.42”) W x 90 mm (3.54”) L x 58 mm (2.28”) H. The enclosure snaps onto an industry standard 35 mm DIN rail. The

DIN rail and Model 110A can be inside a weatherproof box for best protection. Alternatively, the DIN rail and Model 110A can be wall mounted if it is in a clean indoor environment.

S

PECIFICATION

Operating Environment

Input Power

Network Transceiver

Type

Network Termination

0 to 80C, 0-90% RH non-condensing

12-36 VDC or 9 to 26 VAC @ 30 mA typical. Polarity insensitive wiring.

Two Echelon FTT-10A transceivers at 78 kbps. DC blocking capacitors for

Link Power network are installed.

Separate jumpers for each channel support free and bus topology termination.

Multi-Segment Operation Max of 5 repeaters can be daisy chained to construct a 10-channel repeater hub.

External Dimension 36 mm (1.42”) W x 90 mm (3.54”) L x 58 mm (2.28”) H

DIN rail mount to 35 mm rail Enclosure Type

Enclosure Material

Protection

Grey frame retardant Noryl UL94_V0

Input power is fused and transient voltage protected. Fuse automatically resets when fault is removed.

O

RDERING

I

NFORMATION

0110A-00 Model 110A FTT-10 Physical Layer Repeater

Echelon, LON, LonWorks, Neuron, 3120, 3150, LONMARK are trademarks of Echelon Corporation.

.

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