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
0240-06
1
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
CHECKOUT
*Switch 5. ON: Smaller receive window.
OFF: Normal receive window.
*Receive window – “OFF” is the default and allows the coupler/repeater to analyze a
standard receive window. When “ON”, the coupler/repeater changes the method in which
it determines the presence of a valid signal. If excessive “Error” conditions occur, this
setting often helps the unit operate more effectively.
Switch 6. ON: Phase output transmission is disabled. SCC is unaffected.
OFF: CR334 will retransmit received signals on its 3 phases.
Switch 7. ON: CR334 will only retransmit received signals at 0° only.
OFF: CR334 will retransmit received signals at 0° and 30°.
**Switch 8. ON: Lower Sensitivity
OFF: Normal Sensitivity
**Sensitivity: The ACT coupler/repeater is designed to detect signal even when
obscured by background noise. However, under some harsh electrical environments,
the “OFF” setting may be inappropriate. When “ON”, the CR changes the method in
which it determines the presence of a valid signal. If excessive “Error” conditions
occur, this setting often helps the unit operate more effectively.
1. Check terminal connections to be sure they are tight and no bare conductors are exposed. Hinge
the CR334 into place on the 4-11/16" x 4-11/16" electrical box and fasten with both screws. Turn
the circuit breaker(s) on. The green (Power) LED should light. After a moment, the first red (Ready)
LED should light.
2. Using an appropriate test transmitter or any PCC transmitter on the electrical system,
transmit a PCC signal. The third red (Receive) LED will flash followed immediately by the
second red (Transmit) LED which will also flash.
3. If the appropriate LEDs do not flash in response to a remotely transmitted signal, confirm that
the signal reaching the CR334 has a strength of no less than 25mv peak to peak.
4. The last red (Error) LED will light for 5 seconds, then turn off, whenever the CR334 receives a
corrupted signal. If this LED lights often, it is an indication of electrical interference on the
distribution system. Appropriate filtering will usually be required.
EXPLANATION OF FEATURES
Priority SCC
Enabling priority SCC will allow SCC signals to take priority over any other signals that are being
received up to the last bit of the code. When a Priority SCC “interrupt” occurs, the READY LED will
flash off and on quickly.
Receive at 0° or 30°
The CR334 can receive at 0° or it can receive at 30°. When the CR334 is setup to receive at 30° it
will not be able to ignore repeated signal.
* Special Precaution when receiving at 30°: Do not have the Ignore SCC Repeated Signal Option
enabled. Having this feature enabled while receiving at 30° will cause the CR334 to not detect SCC
signals.
Repeat Repeated Signal/ Ignore Repeated Signal
When Repeat Repeated option is enabled, the CR334 will repeat all signals including signals from
another repeater.
When the Ignore Repeated Signal option is enabled, the CR334 will repeat all signals except signals
from another repeater.
*Special Precaution. Do not have the Ignore SCC Repeated Signal option enabled unless the Ignore
Repeated Signal is also enabled or the CR334 will not detect SCC signals. Note, however that the
ADVANCED CONTROL TECHNOLOGIES, INC.
Indianapolis, Indiana 46278
0240-06
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CR334 Installation Instructions
P/D 011904
WARRANTY
opposite is possible; the Ignore SCC Repeated Signal can be disabled while the Ignore Repeated
Signal option is enabled, allowing SCC repeated code to be repeated while not allowing repeated
signals on the power phases to be repeated.
Three Phase/Split Phase Operation
The CR334 can operate in a Three Phase System or two phases of 277 VAC.
X10 Extended Code 1
The CR334 can accept X10 Extended Code 1.
Handles Preset Dim Commands
Repeat on ALL Active Phases/Repeat on SCC line only
The CR334 can be configured to repeat on all active phases including SCC or it can be configured
to repeat on SCC only. When the CR334 is configured to repeat on SCC only, the TRANSMIT led
will flicker when repeating.
Repeat at 0° and 30°/Repeat at °0 only
The CR334 can be configured to repeat at 0° and 30° or it can be configured to repeat at only 0°.
Smart SCC
Smart SCC is an option that is always enabled. When the CR334 receives signal on the SCC line
and repeats it, the signal will not be repeated back onto the SCC line. When the CR334 is
repeating signal received from the SCC line, the RECEIVE led will flicker.
For warranty and general product information visit our web site at
www.act-solutions.com
ABOUT CR334 CERTIFICATION
The CR334 has been thoroughly tested by the ETL SEMKO division of
Intertek, a nationally recognized testing laboratory. This product was
found to be in compliance with safety standards ANSI/UL STD 244A
and CAN/CSA C22.2 No. 177.
Power
Supply Voltage 277 VAC, +/-10%, 50/60 Hz
Fuses (field replaceable) Phase A (Power): 800mA, 277V (Belfuse MRT series)
Signal
Signal Input X10 Powerline Carrier on any phase (sensitive to 25 millivolts peak to
Signal Output X10 Powerline Carrier (including SCC), 5V peak to peak @ 5 ohms
Connection 12" (30.4 cm) flying leads of 16 ga. insulated wire
SCC
Connections Plug-in terminal block
Wire Size 12 to 22 AWG
Wire Strip Length 5/16" (3.81 mm)
RECOGNIZED COMPONENT
Phase B & C: 500mA, 277V (Belfuse MRT series)
peak), (SCC) Signal Carrying Conductor (sensitive to 50 millivolts
peak to peak)
CR334 Installation Instructions
P/D 011904
0240-06
4
ADVANCED CONTROL TECHNOLOGIES, INC.
Indianapolis, Indiana 46278
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