Automation Components Inc (ACI) AAR Control

The ACI AAR Analog Adjustable Relay is a precision analog-to-relay interface designed for seamless building automation system integration. This field-configurable module converts a single analog signal into two independent 10-amp SPDT relay outputs. Utilizing dual onboard potentiometers, technicians can toggle between fixed or adjustable deadband modes to prevent short-cycling in critical HVAC sequences. The edge-connector architecture allows for rapid digital output expansion by bussing power and signal across multiple modules without redundant wiring. High-density terminal blocks support level indication and alarm signaling applications, making it a reliable solution for staging cooling towers, pumps, or multi-stage heating systems.

• Two 10A SPDT Relays: Provides rugged switching capacity for high-draw peripheral devices and motor starters.
• Configurable Deadbands: Choose between a 3% fixed hysteresis or a fully adjustable range to meet specific mechanical tolerances.
• Modular Bus Connection: Sliding edge-connectors reduce installation time and cabling complexity for multi-unit banks.
• Universal Compatibility: Works with standard 0-10 VDC or 4-20 mA control signals from most DDC controllers.
• Enhanced Diagnostics: Integrated status LEDs supply immediate visual feedback for relay activation and signal logic.

How do you configure the ACI AAR for staged heating applications?
The unit is configured by setting the "low" potentiometer for the first stage activation and the "high" potentiometer for the second stage, ensuring the deadband is tuned to prevent rapid relay chatter.

Can the ACI AAR be powered by a 24 VAC supply?
Yes, the module is typically powered by 24 VAC or 24 VDC, making it compatible with most standard HVAC control transformers.

Is this relay suitable for 4-20 mA current loops?
The ACI AAR accepts a variety of analog inputs; for 4-20 mA signals, ensure the internal jumper is correctly positioned to match the input impedance requirements of the circuit.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.