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A S P M E T E R S P L I T C O R E
—
ASPMETER split core
Product diagrams
A
B
2
5
3
4
6
1. 50-pin ribbon cable connectors: Ribbon cables attach
here for easy connection of adapter boards to the data
acquisition board. The two connectors on the left are for
panelboard 1; the two on the right are for panelboard 2.
Note: Connect adapter boards A and B to the correct
ribbon cable connectors for each panel. The top connector
is for adapter board A, and the bottom connector is for
adapter board B.
Note: Ribbon cable is not included with all ASPMETER
models. For ribbon cable options, see recommended
accessories on page 25.
2. Auxiliary inputs: These 0.333 V AC inputs are used for
monitoring the main breaker or other high amperage
source. Inputs on the left are for panelboard 1; inputs
on the right are for panelboard 2.
3. Control (mains) power connection: Easy 2-wire
90–277 V AC 50/60 Hz connection.
4. Control power fuse: 600 V AC, 500 mA time lag,
factory-replaceable.
5. Alive LED: Red/green/amber LEDs. Blink codes on page 18.
6. Voltage taps: 1, 2 or 3 phase plus neutral connections. For
voltage sensing and power calculations (no voltage taps on
the ASPMETER-C). Voltage taps are shared by both panels.
7. Communications address DIP switches: Each Modbus
device must have a unique address. Switches are binary
weighted. Left-most switch has a value of 1; right-most
switch has a value of 128.
Note: Switches set the address for panel 1; panel 2
is automatically set to (panel 1 address + 1). See
configuration section for details.
A
1
B
8
7
2
11
9
10
12
13
14
8. Communications settings DIP switch: Configures baud
rate, parity and 2-/4-wire communications.
9. RS-485 connection: Used for Modbus serial
communications. The universal plug accommodates
2- or 4-wire connections.
10. RS-485 LEDs: The RX LED (closest to DIP switches)
indicates the RS-485 is receiving information; the TX
LED (farthest from DIP switches) indicates transmission
of information.
11. Power LED: Indicates power to main board .
12. Branch current sensors: Each split-core current sensor is
capable of monitoring conductors rated up to a maximum
of 50, 100 or 200 amps. Up to 84 sensors can be purchased
with the ASPMETER (see recommended accessories on
page 25). One of each style is pictured here.
13. Ribbon cable connectors
14. CT terminal connectors
17
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