NoWire Model 2100 Installation and Operation Manual
NoWire Model 2100 Submeter Solutions, Inc., 888-64METER Page 10
oLocate near a 120V outlet where the NoWire power supply will be plugged in.
oAllow room for conduit bends and runs that connect to the bottom of the NoWire
enclosure. (if required for application)
oLocate away from other equipment per your local electrical codes.
oLocate in an area that allows for optimal wireless communications from the meter
transmitters. Though the wireless communications was designed for use inside of
buildings with obstacles and such it is best to avoid mounting NoWire in enclosed rooms
that have metal or thick rebar reinforced concrete walls or deep down in sub-basements
far away from the transmitters that need to be seen by it. If this is unavoidable then
you may need an external receiver (NoWire 1100-2) that can be mounted in an optimal
location connected to NoWire up to 50 feet away. Repeaters may also be used in this
situation. ee the Wireless Theory of Operation section.
•Remove the NoWire cover by unscrewing the 4 corner screws on the cover.
•Note the deep channels in the corners of the enclosure that have a 1/8” hole at the bottom.
This is where mounting screws are inserted. These do not need to be water tight since they are
outside the front cover gasket.
•Using the appropriate mounting screws for your location, attach the NoWire enclosure to your
flat surface.
•If you wish to use conduit for routing your NoWire wiring, you may remove the wire fitting on
the bottom of the NoWire enclosure and attach a ½” conduit. Use a water tight fitting if you
need to keep NoWire water tight.
6.2 Attach optional external wiring to NoWire
6.2.1 Wired Pulse Inputs
If you are using wired pulse inputs to directly connect your meters then wire the pulse output wires
from the meters into terminals P1 through P4 utilizing the PG terminals as the common ground
reference point. ee [link] for more details on wired pulse inputs.
6.2.2 Wired Pulse Outputs
If you are using the pulse outputs to connect to external equipment do the following: For pulse output
#1 wire the 1+ terminal to the positive signal of your equipment and the 1- terminal to the negative or
ground reference signal of your equipment. For pulse output 2 through 4 wire to terminals 2+/ 2-, 3+/
3-, and 4+/ 4- respectively.
6.2.3 R 232/R 485 Connections
If you are communicating with NoWire using Modbus connect using R 232 or half duplex multi-drop
R 485. For R 232 connections connect your R 232 cable to NoWire COM2 DB9 female connector. For
R 485 either connect to D+, D-, and GND on the NoWire terminal block or connect to pin 1 (D+), pin 9
(D-) and pin 5 (GND) to NoWire COM2 DB9 female connector.
6.2.4 Apply Power to NoWire
NoWire comes with a 12VDC power supply. Before plugging the power supply into a 120V outlet, route
the power supply wire up thru the NoWire wire entry location on the bottom of the enclosure and
connect the wires to the V+ and V- terminal block on the bottom left side of the NoWire circuit board.
Be sure the positive wire is connected to V+ and the negative wire is connected to V-. The + and –
designations should be shown on the power supply itself or the power supply wires. Once your power
