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ANALOG INTERFACE SERIES
Installation & Operation Instructions
ARM2
GENERAL INFORMATION
The ARM2 will accept a single analog (voltage or
current) signal and split that signal into two DC
non-isolated current sourcing outputs that can be
re-scaled. Its primary application is as a signal splitter.
The outputs are always scaled identically and will
always track each other. The top-adjust trimmer
potentiometers can be used to make ne adjustments
to output ranges for maximum exibility. This device
can attenuate an input signal to 100%. The ARM2 also
has an adjustable gain and o set. The output gain can
be adjusted from 1 to 20 times the input (gain will vary
depending on input). The ARM2 also has the ability to
reverse an input signal.
MOUNTING INSTRUCTIONS
Circuit board may be mounted in any position. If
circuit board slides out of snap track, a
nonconductive "stop" may be required. Use only
ngers to remove board from snap track. Slide out
of snap track or push against side of snap track and
lift that side of the circuit board to remove. Do not ex board or use tools.
WIRING INSTRUCTIONS
PRECAUTIONS
• Remove power before wiring. Never connect or disconnect wiring with power applied.
•
When using a shielded cable, ground the shield only at the controller end. Grounding both
ends can cause a ground loop.
• It is recommended you use an isolated UL-listed class 2 transformer when powering the unit
with 24 VAC. Failure to wire the devices with the correct polarity when sharing transformers may
result in damage to any device powered by the shared transformer.
• If the 24 VDC or 24VAC power is shared with devices that have coils such as relays, solenoids,
or other inductors, each coil must have an MOV, DC/AC Transorb, Transient Voltage Suppressor
(ACI Part: 142583), or diode placed across the coil or inductor. The cathode, or banded side of the
DC Transorb or diode, connects to the positive side of the power supply. Without these snubbers,
coils produce very large voltage spikes when de-energizing that can cause malfunction or
destruction of electronic circuits.
• All wiring must comply with all local and National Electric Codes.
Automation Components, Inc.
2305 Pleasant View Road | Middleton, WI 53562
Phone: 1-888-967-5224 | Website: workaci.com
FIGURE 1: DIMENSIONS
BOARD
2.17"
(55.16mm)
SNAP TRACK
2.18"
(55.37mm)
3.88" (98.55mm)
Page 1
Phone: 1-888-967-5224
Website: workaci.com
3.69" (93.72mm)
0.70"
(17.78mm)
Version: 6.0
I0000586
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Summary of Contents for aci ANALOG INTERFACE Series
- Page 1 MOV, DC/AC Transorb, Transient Voltage Suppressor (ACI Part: 142583), or diode placed across the coil or inductor. The cathode, or banded side of the DC Transorb or diode, connects to the positive side of the power supply. Without these snubbers, coils produce very large voltage spikes when de-energizing that can cause malfunction or destruction of electronic circuits.
-
Page 2: Factory Calibration
FIGURE 2: WIRING DC AC INPUT OFFSET O - + SIG1 SIG2 + IN - + OUT - + OUT - ATTN GAIN OFF REV ACTION (-) Output 2 Output 1 (+) 24 VAC/VDC POWER SUPPLY Output 1 (-) (+) Output 2 AUX Power Output (+) Input from 2-wire Current Loop Powered Sensor... - Page 3 EQUIVALENT CALIBRATION VOLTAGE Use a voltage signal for your input signal during calibration: this makes both the procedure and the explanation easier. If you will require a current input when you are nished, use the equation below to nd the equivalent calibration voltage to use during the calibration procedure: Equivalent Calibration Voltage = Required Input Signal Amps x 250 Example: 1 VDC is the equivalent calibration voltage for a 4 milliamp input signal (1 = .004 x 250) or 5 VDC is the equivalent calibration voltage for a 20 milliamp input signal (5 = .020 x 250).
- Page 4 EQUIVALENT CALIBRATION VOLTAGE (Continued) To calculate the voltage input signal span, subtract the minimum voltage input signal from the maximum input signal (i.e. a 0 to 5 volt input signal will give you a 5 volt input signal span: 5-0=5). To calculate the current output signal span, subtract the minimum output signal from the maximum output signal (i.e.
-
Page 5: Product Specifications
Operating Humidity Range: 10 to 95% non-condensing WARRANTY The ARM2 Series is covered by ACI’s Two (2) Year Limited Warranty, which is located in the front of ACI’S SENSORS & TRANSMITTERS CATALOG or can be found on ACI’s website: www.workaci.com. W.E.E.E. DIRECTIVE At the end of their useful life the packaging and product should be disposed of via a suitable recycling centre. - Page 6 NOTES Page 6 Automation Components, Inc. Version: 6.0 2305 Pleasant View Road | Middleton, WI 53562 I0000586 Phone: 1-888-967-5224 | Website: workaci.com...
- Page 7 NOTES Page 7 Automation Components, Inc. Version: 6.0 2305 Pleasant View Road | Middleton, WI 53562 I0000586 Phone: 1-888-967-5224 | Website: workaci.com...
- Page 8 Automation Components, Inc. 2305 Pleasant View Road Middleton, WI 53562 Phone: 1-888-967-5224 Website: workaci.com Page 8 Automation Components, Inc. Version: 6.0 2305 Pleasant View Road | Middleton, WI 53562 I0000586 Phone: 1-888-967-5224 | Website: workaci.com...