Advanced Control Technologies CR334 User Manual

CR334

A10 PCC 277/480 VAC Coupler-Repeater

THE CR334 is a coupler-repeater designed to receive A10 or X10 Powerline Control Component
signals of 120 KHz from any phase of a 277 VAC, 50/60 Hz, 3-phase power distribution system and
retransmit them onto all three phases, when it is detected on one phase (as low as 25 millivolts peak
to peak) or SCC (Signal Carrying Conductor) lines (as low as 50 millivolts peak to peak). In doing
so, it effectively amplifies the signal for all connected phases, and also creates signal appropriate for
480V receivers. The CR334 is also capable of receiving and retransmitting Dim and Bright signals
nearly simultaneously, including preset dim. In addition to SCC connections, the CR334 has special
signal processing functions to better operate in complex coupling situations (described in detail
in the " Installation" section). Although designed for use on all 3 phases, it can be wired to just 1
or 2 phases, if desired. Its signal output will be greater than 5 volts peak to peak @ 5 ohms, on all
3 phases. Actual output is dependent on facility impedance. This unit is not intended for 120/240V,
120/240/208 high leg delta, or 120/208V, 3 phase systems.

BEFORE YOU BEGIN...

READ ALL INSTRUCTIONS

Make sure your installation will conform to all applicable electrical codes and requirements.

TEST FOR SIGNAL STRENGTH AND INTERFERENCE...

using the appropriate test equipment. It is necessary to test the installation in the actual operating
environment. The amount and types of line loads may reduce the signal strength and/or electrical
interference may degrade the signal. To insure a fully functional system, special coupling devices
may be required to allow signal to be distributed to all phases and zero-crossings in multi-phase and
multi-transformer power distribution systems.

IF YOU HAVE ANY QUESTIONS...

Consult your nearest Engineered System Center (ESC) for technical assistance. Other than fuses
there are no field repairable assemblies on this unit. Should service be required, please contact the
ESC from where it was purchased.

ADVANCED CONTROL TECHNOLOGIES, INC.
Indianapolis, Indiana 46278

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CR334 Installation Instructions

P/D 011904

INSTALLATION

SHOCK HAZARD:

1. This device uses High AC Voltage. Please make all connections and fuse changes with the power
turned off at the breaker panel.

2. Keep fingers away from the internal Heat-sink when the Coupler Repeater is powered. The heat­sink gets very hot and there is a low AC potential present from the heat sink to neutral.

CAUTION! Make all connections with the POWER OFF at the circuit breakers to avoid injury to the
installer or damage to the device. Tools required are those commonly used in basic electrical work.

1. Remove the CR334 from its packaging. Do not discard packaging or instructions until the
installation is complete and operational.

2. Determine the proper location for the CR334 (usually near the main breaker panel) and install
a 4-11/16" x 4-11/16" electrical box according to local and national electrical codes. To maintain
ETL compliance the CR334 must be installed on the 4-11/16" box, and this box must be properly
grounded (box by others).

3. Mount the electrical box in such a manner to allow the CR334 to hinge open and the LED's to be
easily seen.

4. Prepare the required breakers as determined by local and national electrical codes. Although
dedicated circuit breakers make the installation easier, the CR334 may share breakers with
other equipment. Additional wire is usually required (not included).

With the breakers off, follow the diagram on page 1 when connecting the three phase wires and
one neutral wire to the four flying leads on the coupler repeater.

5. If not already done, strip insulation from the ends of the conductors. Connect the flying leads to
each of the three phase wires and to the single neutral wire using wire nuts. Cap any flying leads
not used with individual wire nuts.

6. If Signal Carrying Conductor (SCC) input is used, unplug the SCC plug from the terminal block and
connect the blue and yellow SCC wires to the plug, according to the legend on the printed circuit
board next to the terminal block. Plug it back in after connections are made.

SCC JUMPER SELECTION (J1):

There is one two pin header on the board for an additional operation of the SCC lines. This header
allows the user to select if the CR334 will be allowed to repeat known repeated signals seen on the
SCC lines. If the pins of the two pin header are shorted with a jumper shunt, the CR334 will repeat
repeated signals on the power line phases if repeated signals are seen on the SCC lines. If the pins
are open on this header, then the CR334 will not repeat repeated signals on the power lines if they
are seen on the SCC lines. If DIP switch #2 (see below) is ON, this header must be shorted.

DIP SWITCH SETTINGS:

The CR334 has special capabilities that allow for complex coupling situations. These capabilities
are enabled or disabled by 8 dip switches in the top left corner of the PCB. The Default condition
for all switches is OFF.

Following is a list of the switches and capabilities they change in the operation of the Coupler
Repeater. These switches can be changed as long as there is power applied to Phase A.

Switch 1. ON: SCC signals will take precedence over any incoming power line signal.

Switch 2. ON: CR334 will receive signals at 30°.

Switch 3. ON: CR334 will ignore previously repeated signals on the three phase connections

Switch 4. ON: Split / single phase system is selected.

CR334 Installation Instructions
P/D 011904

OFF: The first received signal from any phase or the SCC lines will take precedence over

the others that may come in shortly after.

OFF: CR334 will receive signals at 0°.

only. The SCC lines are unaffected by this switch.

OFF: CR334 will repeat both original and previously repeated signals. The SCC lines are

still unaffected by this switch.

OFF: A three phase system with neutral is selected.

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ADVANCED CONTROL TECHNOLOGIES, INC.

Indianapolis, Indiana 46278