M9335-HGA-2 Johnson Controls Actuator

Overview

The Johnson Controls M9335-HGA-2 is a high-performance electric non-spring return actuator engineered to provide precise control of dampers and valves in commercial and industrial HVAC systems. It features automatic signal input detection, allowing it to automatically recognize on/off, floating, and proportional control signals. Designed for direct mounting without requiring damper linkage, it operates at a constant runtime independent of torque and includes electronic stall detection to protect against overloads.

Features

• Automatic Signal Input Detection: Automatically recognizes input signals for on/off, floating, and proportional control.
• Direct-Coupled Design: Configured for direct mounting with a universal clamp, eliminating the need for a damper linkage or crankarm.
• Brushless DC Motor: Microprocessor-controlled motor provides constant runtime independent of torque and reduces wear for a longer lifecycle.
• Electronic Stall Detection: Protects the actuator from overload at all angles of rotation without the need for mechanical end switches.
• Self-Calibrating Input Signal: Automatically adjusts the stroke when an end stop is changed, eliminating complex calibration procedures.
• Halogen-Free Cable: Equipped with a 48-inch halogen-free cable suitable for strict fire safety standards.

Specifications

• Supply Voltage: 24 VAC (19.2 to 28.8 VAC) at 50/60 Hz or 24 VDC (21.6 to 26.4 VDC)
• Torque Rating: 310 lb-in (35 N·m)
• Power Consumption: 6.4 VA running (AC), 2.2 W running (DC)
• Control Signals: On/Off, Floating, or Proportional (0(2)–10 VDC, or 0(4)–20 mA with field-furnished 500 ohm resistor)
• Feedback Signal: 0(2) to 10 VDC
• Running Time: 150 seconds
• Enclosure Rating: NEMA 5 / IP54
• Ambient Operating Temperature: -22°F to 140°F (-30°C to 60°C)

Applications

• Damper actuation in commercial and industrial HVAC systems.
• Valve control utilizing optional mounting kits, such as the VG1000 series valves.
• Air handling units (AHUs), fan coil units, and ventilation systems.
• Environmentally sensitive or code-restricted installations requiring low-smoke, zero-halogen (LSZH) wiring compliance, such as schools, hospitals, and data centers.