aci A/CTE2-50, A/CTE2-150, A/SCTE2-150, A/SCTE2-250, A/SCTE2-50 General Information Manual

VOLTAGE OUTPUT CURRENT
SENSOR SERIES

Installation & Operation Instructions

Phone: [phone]

Website: workaci.com

PRECAUTIONS

• This product is not intended to be used for
Life or Safety applications.

FIGURE 1: DIMENSIONS

Solid-Core

2.36” (59.94mm)

• This product is not intended for use in any
hazardous or classified locations.

• The A/CTE2, A/CTV2, A/SCTE2 and A/SCTV2
Series Current Sensors must be used on

2.77”
(70.45mm)

Insulated Conductors Only.

HIGH VOLTAGE

• Disconnect and lock out all power sources
before installation as severe injury or death
may result from electrical shock due to
contact with high voltage wires.

GENERAL INFORMATION

The Voltage Output Analog Current Sensors are designed
for use in any AC current monitoring application in which

1.03”
(26.16mm)

Split-Core

2.55” (64.69mm)

2.87” (72.80mm)

3.35” (84.99mm)

you are looking to monitor a particular piece of
equipment for proper operation. All voltage output
current sensors use an “Average” current measuring
method and should be used in applications where a pure

2.77”
(70.35mm)

Sinusoidal AC waveform that has very little or no
distortion/noise on the conductor being monitored.
Applications may include monitoring a resistive type load
such as an incandescent light bulb or heating element as
well as any single speed linear load. Voltage Output
current sensors are available in both solid and split-core

3.24” (82.23mm)

2.87” (72.77mm)

1.10” (28.02mm)

versions which also includes a Patented 35 mm Din Rail
mounting foot for easy installation in panel mount
applications. The solid-core versions are a great choice for
new installations or OEM applications in which cost
sensitivity, lower trip points and environmental issues like
dust and moisture may be of concern. The split-core version of the current sensors work great in retrot applications and
for use on service technicians vehicles since one or two parts will work in most applications and can be easily installed
without disconnecting any wires. For best results, the voltage output current sensors should not be used in applications
with switching power supplies or variable speed drives due to the limited operating frequency range. In applications
where variable speed drives or waveforms include distortion/noise, ACI recommends the use of the A/CTA2-RMS or
A/SCTA2-RMS Series sensors where you need to supply 24 VDC power to the current sensors with a 4-20 mA signal. A
249 Ohm or 499 Ohm 1 Watt resistor can be used to convert the 4-20 mA signal into a useable 1-5 or 2-10 VDC output
signal at your building management system or PLC.

Page 1

Automation Components, Inc.

2305 Pleasant View Road | Middleton, WI 53562
Phone: [phone] | Website: workaci.com

Version: 8.0

I0000790

INSTALLATION

Make sure that all installations are in compliance with
all national and local electrical codes. Only qualied
individuals that are familiar with codes, standards, and

FIGURE 2: OPENING A/SCTV2-50
SERIES

A/SCTV2-50

proper safety procedures for high-voltage installations
should attempt installation. The current sensor will not
require external power, since the power for the current
sensor is induced from the conductor being monitored.

The current sensor may be mounted in any position
using the two #8 x ¾” Tek screws and the mounting
holes in the base, or snapped directly on to the 35mm
DIN rail (See Figure 3). Leave a minimum distance of 1”
(3 cm) between the current sensor and any other
magnetic devices such as contactors and transformers.

A/SCTV2-50

Latch Operation for A/SCTE2 and A/SCTV2 Series

Press down on the side tab and swing the top of the
unit up to open the split core current sensor as shown
in Figure 2. Press down rmly on the cover to close the
current sensor. An audible “click” will be heard as the
tab slides over the tongue on the base.

CAUTION: Mating surfaces of the magnetic core are
exposed when the sensor is open. Electrical contact
grease, present on the cores to prevent corrosion, can
capture grit and dirt if care is not exercised. Operation
can be impaired if anything prevents good contact between pole pieces. Visually check the mating parts
of the core before closing the current sensor.

Current Sensor Setup

The amperage range selected represents the maximum current that can be applied to the conductor being
monitored, Do not exceed! All current sensors with selectable ranges will have the range selection jumper
factory set on the high range. For models with eld selectable amperage ranges, select the correct
amperage range using the range selection jumper.

Note: An extra jumper shunt is included. It can be discarded if not needed.

Note: In applications where high vibrations are encountered, ACI recommends to use the jumper shunt

without tab. A pliers can help with jumper shunt installation onto the pins.

FIGURE 3: DIN RAIL INSTALLATION

Page 2

Automation Components, Inc.

2305 Pleasant View Road | Middleton, WI 53562
Phone: [phone] | Website: workaci.com

Version: 8.0

I0000790

FIGURE 4: WIRING

(-) Signal Common

+ 0-5 or 0-10 VDC
Analog Input

GND (Shield)

COM

0-5 VDC

SHIELDED CABLE

PLC, DDC or DATA
Acquiation System

WIRING INSTRUCTIONS

ACI recommends the use of a two conductor 16 to 22 AWG shielded cable, copper wire only, for all Analog
current sensor installations. A maximum wire length of less than 30 meters (98.4 feet) should be used
between the current sensors and the Building Management System or controller. All wiring must comply
with all local and National Electric Codes.

Note: When using a shielded cable, be sure to connect only (1) end of the shield to ground at the controller.
Connecting both ends of the shield to ground may cause a ground loop.

When removing the shield from the sensor end, make sure to properly trim the shield to prevent any chance
of shorting. The current sensor terminals are polarity sensitive and represent a linear 0 to 5 or 0 to 10 VDC
output signal. Tighten the screws at the terminal block connections to the recommended torque of 0.5 to 0.6
Nm (4.43 to 5.31 in-lbs.). The aperture (hole) size of the current sensor is 0.75” (1.90 cm).

Automation Components, Inc.

2305 Pleasant View Road | Middleton, WI 53562

Phone: [phone] | Website: workaci.com

Page 3

Version: 8.0

I0000790