Johnson Controls M9220-HGC-3 Actuator

The Johnson Controls M9220-HGC-3 is a high-torque, proportional spring return damper actuator designed for precise modulation in demanding HVACR applications. Engineered for direct-coupled mounting, this 177 lb-in (20 N·m) unit provides reliable control for dampers and valves without requiring complex linkages. It supports a wide range of input signals, including 0-10 VDC, 2-10 VDC, and 4-20 mA (via the included 500 Ohm resistor), and features adjustable zero and span for field-calibrated control logic. The integrated brushless DC motor is microprocessor-controlled, ensuring constant 150-second run times and 20-second spring return cycles regardless of the applied load. For enhanced system integration, this model includes two internal SPDT auxiliary switches for end-stop position signaling. The durable NEMA 2 (IP54) aluminum enclosure and electronic stall detection protect the internal gear train, making it a rugged choice for mechanical contractors and engineers managing large-scale air handling systems.

• Enhanced Torque Performance: Delivers 177 lb-in of running and spring return torque; can be tandem-mounted for up to 531 lb-in.
• Universal Compatibility: Operates on 24 VAC/VDC power supply and accepts all standard proportional control signals.
• Field Adjustability: Features an adjustable start point (zero) and operating range (span) to match specific controller outputs.
• Simplified Installation: Reversible mounting design and 48-inch halogen-free cable with numbered leads reduce field labor.
• Motor Protection: Advanced electronic stall detection deactivates the motor when an obstruction is met, preventing mechanical failure.

How do I wire the M9220-HGC-3 for a 4-20 mA control signal?
To use a 4-20 mA signal, you must place the provided 500 Ohm resistor across the control signal input (gray) and common (black) wires. Ensure the selector switch is set to the appropriate voltage range corresponding to the 2-10V scale for standard 4-20 mA operation.

Can this actuator be mounted to different shaft types?
Yes, the standard shaft coupler accommodates 1/2" to 3/4" round shafts or 3/8" to 1/2" square shafts. For larger jackshafts up to 1-1/16", the M9220-600 coupler kit is required.

What is the function of the dual auxiliary switches?
The SPDT auxiliary switches are used to signal auxiliary equipment, such as a fan or pump, when the damper reaches a specific position (typically one is fixed at 11 degrees and the other is adjustable).

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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.