M9203-GGA-2 Johnson Controls Actuator

Overview

The Johnson Controls M9203-GGA-2 is a spring return, direct-coupled electric damper actuator engineered for precise proportional control in commercial heating, ventilating, and air conditioning (HVAC) systems. It features a mechanical spring return system to provide fail-safe positioning upon power loss and mounts directly to damper shafts without needing complex linkages. Equipped with a brushless DC motor and electronic stall detection, it offers durable, maintenance-free operation in demanding building automation environments.

Features

• Proportional control for precise, modulating damper positioning.
• Spring return fail-safe system ensures reliable positioning during power interruptions.
• Direct-coupled design enables tool-free installation on round or square shafts.
• Electronic stall detection monitors motor rotation to prevent damage without mechanical switches.
• Microprocessor-controlled brushless DC motor provides constant speed independent of torque.
• Plenum-rated cable (10 feet) enables code-compliant installation in environmental air spaces.

Specifications

• Torque Output: 27 lb-in (3 N-m) running and spring return.
• Supply Voltage: 24 VAC/VDC, 50/60 Hz.
• Control Signal: 0 to 10 VDC or 2 to 10 VDC (0/4 to 20 mA with a 500 ohm resistor).
• Feedback Signal: 0 to 10 VDC or 2 to 10 VDC position tracking.
• Run Time: 150 seconds constant for 90-degree rotation (power-on); less than 25 seconds for spring return.
• Enclosure Rating: NEMA 2 (IP54).
• Operating Temperature Range: -40 to 140 degrees Fahrenheit (-40 to 60 degrees Celsius).

Applications

• Modulating damper control in commercial air handling units (AHUs).
• Variable air volume (VAV) box damper control.
• Outdoor air, exhaust air, and mixed air ventilation systems.
• Proportional modulation of VG1000 series ball valves when using accessory mounting kits.
• Dedicated placement in plenum spaces and hung ceilings used for environmental air handling.