Terminate linkpower (lon®) control wiring, Terminate linkpower (lon, Control wiring – ETC Unison ERn Rack-mount Control Enclosure User Manual

Page 29: N o t e

Install Rack Options

Terminate LinkPower (LON

) Control Wiring

Unison control stations communicate with the Paradigm architectural control processor

using the LinkConnect station communication bus from the architectural control processor

to the stations. LinkConnect is based on Echelon

LonWorks

with LinkPower bidirectional

protocol, and uses one pair of wires (data+ and data-). Throughout this instruction,

LinkConnect is referred to by the protocol it uses, LinkPower.

Termination is available for up to six home runs of LinkPower (LON) data runs utilizing

Belden 8471 cable (or approved equal) plus one 14 AWG ESD drain wire when the data

cable is not installed in grounded metal conduit. LinkPower wiring is topology-free and

polarity independent, you can install your LinkPower data runs in any desired combination

of bus, star, loop, and home run. The total combined length of LinkPower wire run cannot

exceed 1,640 feet (500m), with a maximum distance of 1,313 feet (400m) between any two

un-repeated communicating devices. Without a repeater, no device may be more than

1,313 feet (400m) away from the architectural control processor.

Standard LON interoperability requires that there should be a maximum of only one

repeater between any two LON devices. This means that only one repeater module,

whether a Paradigm station repeater module (P-REP) or a Paradigm dual station repeater

module (P-DREP), may be used per Paradigm architectural control processor (P-ACP).

Each individual topology-free LonWorks network can have no more than 62 LON stations

with a repeater, station power module, and Paradigm architectural control processor.

Step 1:

Pull Belden 8471 (or approved equal type) control wiring to the rear panel of the

ERn enclosure.

Step 2:

Strip 3/16” (5mm) of insulation from the ends of each wire pair.

Step 3:

Remove the LinkPower connector (labeled LON).
•

Notice the LinkPower/LON connector is labeled

to indicate that the connector is split between two

LON segments, allowing three station wire home

runs per segment. This is effective only when a

Paradigm dual station repeater module (P-

DREP) is used. With the standard Paradigm

station repeater module (P-REP) you may

connect up to six station home runs to the

connector for the single LON segment control.

Step 4:

Loosen the terminal screws for as many wire pairs

you are terminating. Keep in mind that the connector

is split into two LON segments. Be sure to terminate

each wire pair to the correct segment.

Step 5:

Insert each white (typical) wire from the pairs into an

“A” terminal on the connector and tighten the screw

firmly to secure the wire into the connector.

Step 6:

Insert each black (typical) wire from the pairs into an “B” terminal on the

connector and tighten the screw firmly to secure the wire into the connector.

Step 7:

The 14 AWG (2.5mm

) ground wire can terminate to the ground bus located on

the rear panel of the ERn enclosure. Connect the other end of the ground wire to

the green/yellow striped wire connected at the architectural control station using

N o t e :

All low voltage control cables must run in separate conduit from power wires.

N o t e :

When utilizing a Paradigm station repeater module (P-REP) or Paradigm dual

station repeater module (P-DREP), terminate the repeated LON segment(s) and

auxiliary power wiring to the related rear panel I/O board.