
E-MON CLASS 3200 METER
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6.4.1 Current Sensor Wiring
Once the current sensors are installed onto their appropriate phase conductors,
you can begin terminating the current sensors onto the E-Mon Class 3200 main
board. The current sensors can be extended up to 500 feet for remote monitoring
applications. To extend the length of the wires, use #22 AWG twisted-pair wire
with one white and one black wire.
The easiest way to connect the current sensors is to use the meter’s built-in
current sensor diagnostics. To do this, there must be at least 1% of the meter’s
current rating (amps) flowing in each of the conductors being monitored. The
E-Mon Class 3200 meter’s diagnostic program (on the 4-line display) will provide
data to ensure that the current sensor installation is done properly.
The current sensor connection points are located at the bottom right of the main
power board. These are TB2, TB3, and TB4. Each sensor connects to two
terminals one labeled “Black” and the other “White.” Current sensors should be
connected to the meter one at a time and verified using the current sensor
diagnostic program.
Connect one of the current sensors to the TB2 terminals (Phase A). Tighten the
terminal to 4.5 in-lb. Wait 5 seconds and look at the meter display.
If the meter displays an error message (see below), remove the wires from TB2
(Phase A) and install them on TB3 (Phase B). if an error message occurs with the
sensor attached toTB3, try again on TB4 (Phase C). The wiring will be correct
when the error indication message is gone.
NOTE: If the power factor being monitored is <65%, the error message may be
activated until improved. This is normal and indicates poor power factor.
The “CT Error: * “message will disappear when the current sensor is connected to
the correct terminals (phase).
Error Messages: CT ERROR: A
CT ERROR: A B
CT ERROR: A C
NOTE: The Single Phase option will only display errors for A and B.
Refer to the section on Current Sensor Diagnostics for assistance in
troubleshooting these errors.
6.4.2 Main Power
After the meter circuit wiring has been examined for correctness, power may be
applied to the circuit board. There are three LEDs located in the upper right
corner of the Meter Board labeled BEAT, STATUS and LOAD. The BEAT and
STATUS LEDs will blink once per second when the meter is operating normally,
twice per second if there is a problem.If the monitored circuit is under load the
LOAD LED will actively blink. A heavy load will cause the LED to blink faster than
a light load. Very light loads will result in an extended blink time.
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