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Floating Point to Analog Output for Control Applications
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Series-AUD

Floating Point to Analog Output for Control Applications

  • Simplifies ECM switch calibration: The Trip Adjust Tool helps technicians set the trip point on ACI ECM current switches.
  • Visual output indication: Provides a clear indication of output status during setup, reducing guesswork in the field.
  • Distinguishes standby from running: Helps calibrate ECM current switches to identify true motor operation rather than low standby current.
  • Ideal for HVAC commissioning: Useful for fan, pump, compressor, air handler, and furnace motor status applications.
  • Service-friendly accessory: Speeds troubleshooting and verification during installation or maintenance.
Series-AUD
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Series-AUDData Sheet

Data Sheet
Floating Point to Analog Output for Control Applications Series-AUD Series-AUD
Product Overview
  • Accuracy Detail Output Signal Accuracy (24 VAC, 60 Hz): Absolute +/- 2% of span for adjustable ranges, 5% for preset; Output Signal Accuracy (24 VAC, 50 Hz): Absolute +/- 3% of span for adjustable ranges, 5% for preset
  • Air Consumption 0 SCIM
  • Approvals RoHS2, WEEE
  • Contact Fail-Safe N/A
  • Electrical Connection Screw Terminal
  • Height 1.15 in
  • Input Note Input Signal Source: Relay contact closure, transistor, or triac (24 VAC, 50/60 Hz); Input Signal Trigger Level: Normal Mode: 5 to 26.4 VDC, 24 to 26.4 VAC
  • Input Range N/A
  • Input Type Floating Point
  • Length 3.75 in
  • Materials PVC
  • Operating Humidity 10 to 95% RH, non-condensing
  • Operating Temperature, Max 120 °F
  • Operating Temperature, Min 35 °F
  • Output Configurations Rescalable
  • Output Note Output Voltage Fixed Signal Ranges: 0 to 1 VDC, 0 to 4 VDC, 0 to 10 VDC, 0 to 13 VDC, 1 to 2 VDC, 1 to 5 VDC, 1 to 11 VDC, 1 to 14 VDC; Output Voltage Adjustable Signal Ranges: 0 to 20 VDC (with adjustable oset and span); Output Voltage Signal Load: 3300Ω minimum at 20 VDC ± 10% , 400 ohms minimum at 10 VDC ± 10% (If the voltage output is limited to 18 VDC on the high end of the output span, the DC supply limit can be 24 VDC –10% and maintain stated accuracy; Output Current Fixed Signal Ranges: 0 to 16 mA, 4 to 20 mA; Output Current Adjustable Signal Ranges: 0 to 20 mA (with adjustable oset and span); Output Current Signal Load: 0 to 750Ω maximum (If the load is lowered to 700Ω, the DC supply can be 24 VDC –10% and maintain stated accuracy
  • Output Resistance N/A
  • Resolution 256 steps (all ranges); 24 VDC (+/- 10%), 48 mA maximum
  • Series ID Series-AUD
  • Storage Temperature, Max 150 °F
  • Storage Temperature, Min -20 °F
  • Supply Current 208 mA
  • Supply Voltage 24 Vac/Vdc
  • Tightening Torque 0.5 Nm (Minimum); 0.6 Nm (Maximum)
  • Weight 0.24 lb
  • Width 2.2 in
  • Wire Gauge 26 to 16 AWG

Supported Applications

The ACI Series AUD is a floating point to analog output interface designed for control applications. It converts floating point signals into linear analog outputs, providing stable steady-state voltage or current levels that ramp up or down based on input activation. Documented application areas include variable speed drive control, motor speed control, contact integration, and actuator control.

Operating Conditions & Performance

The Series AUD operates within an ambient temperature range of 35 to 120°F (1.7 to 48.9°C) with a storage temperature capability from -20 to 150°F (-28.9 to 65.5°C). Humidity tolerance is rated at 10 to 95% non-condensing. The unit requires a power supply of 24 VDC (range: 24 VDC to 35 VDC) or 24 VAC (range: 21.6 VAC to 28 VAC, 50/60 Hz), drawing a maximum supply current of 208 mA.

Output signal accuracy is specified as Absolute +/- 2% of span for adjustable ranges and 5% for preset configurations when powered by 24 VAC at 60 Hz. For 24 VAC at 50 Hz, accuracy is Absolute +/- 3% of span for adjustable ranges and 5% for preset. The output signal resolution across all ranges is 256 steps.

Load requirements vary by output type: voltage outputs require a minimum load resistance of 3300Ω at 20 VDC ± 10%, or 400 ohms minimum at 10 VDC ± 10%. Current outputs support a maximum load of 0 to 750Ω; if the load is lowered to 700Ω, the DC supply can be reduced to 24 VDC -10% while maintaining stated accuracy.

Input and Output Specifications

  • Inputs: Supports relay contact closure, transistor, or triac (24 VAC, 50/60 Hz). Trigger levels are Normal Mode: 5 to 26.4 VDC, 24 to 26.4 VAC; Triac Mode: 24 to 26.4 VAC.
  • Fixed Voltage Outputs: 0 to 1 VDC, 0 to 4 VDC, 0 to 10 VDC, 0 to 13 VDC, 1 to 2 VDC, 1 to 5 VDC, 1 to 11 VDC, 1 to 14 VDC.
  • Adjustable Voltage Outputs: 0 to 20 VDC (with adjustable offset and span).
  • Fixed Current Outputs: 0 to 16 mA, 4 to 20 mA.
  • Adjustable Current Outputs: 0 to 20 mA (with adjustable offset and span).

Rates of Change by Version

The series offers multiple firmware versions with distinct rates of change for output ramping, defined in seconds based on input combinations (Program #):

  • Version 1 (0008Y0A.HEX): 5 sec., 15 sec., 30 sec., 90 sec.
  • Version 2 (0244Y0A.HEX) & Version 3 (0256Y0A.HEX): 45 sec., 60 sec., 120 sec., 240 sec. Note: Version 3 resets to maximum on startup or if both inputs pulse for 3.5 seconds.
  • Version 4 (0537Y0A.HEX): 5 sec., N/A, N/A, 360 sec.
  • Version 5 (S-AUD V5): 60 sec., 75 sec., 120 sec., 150 sec.
  • AUD2: Resets to midpoint output signal on start-up; rates of change are 5, 15, 30, 90s.

Configuration Options

The Series AUD is housed in a Polyvinyl Chloride (PVC) snap track enclosure with a UL94 V-0 flammability rating. The unit features 90° pluggable screw terminal blocks compatible with wire sizes from 16 AWG (1.31 mm²) to 26 AWG (0.129 mm²), requiring a torque of 0.5 Nm minimum and 0.6 Nm maximum.

Configuration options include scaling via dip switches or potentiometers for adjustable ranges. The unit provides a regulated power output of 24 VDC (+/- 10%), 48 mA maximum, available to the user. Available accessories include:

  • A/D0008 (Item # 142583): Transient Voltage Suppressor, Bi-directional, 56VAC/DC, 1500W.
  • A/DRC 3.88 X 2.18 (Item # 142623): DIN Rail Adapter Kit.
  • ENC1 (Item # 102472): 20 Gauge Metal Enclosure, Designed to Hold Interfaces Products.

The product dimensions are (L) 3.75" (W) 2.20" (H) 1.15" (95.25 x 55.88 x 29.21 mm), with a weight of 0.24 lbs. (0.1077 Kg). Agency approvals include RoHS2 and WEEE.

Key Product Differences

The Series AUD is differentiated by firmware version, which dictates the rates of change for output ramping and specific reset behaviors on power-up or input conditions:

  • AUD (Version 1): Standard configuration with rates of 5, 15, 30, 90s.
  • AUD Version #2 & #3: Slower ramping speeds (45 to 240s). Version #3 includes a specific reset behavior: it resets to maximum output on startup or if both inputs pulse for 3.5 seconds.
  • AUD Version #4: Features rates of 5 and 360s, with N/A values for intermediate input combinations.
  • AUD Version #5: Offers distinct ramping speeds of 60, 75, 120, 150s.
  • AUD2: Distinct from standard versions by resetting to the midpoint output signal on start-up while maintaining rates of 5, 15, 30, 90s.
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