M9208-GGA-2G Johnson Controls Actuator

Overview

The Johnson Controls M9208-GGA-2G is a Proportional Electric Spring Return Direct Coupled Actuator designed for precise control and modulation of dampers in HVAC systems. Operating on 24 VAC or 24 VDC power, it delivers 70 lb-in (8 N-m) of rated torque and incorporates a mechanical spring return mechanism to provide fail-safe repositioning in the event of a power loss.

Features

• Microprocessor-controlled brushless DC motor provides constant speed and electronic stall detection without mechanical end switches.
• Direct-coupled design mounts easily to shafts without requiring a damper linkage.
• Automatic spring-safe return system guarantees rated torque output with or without power applied.
• Includes a 120-inch plenum-rated cable with an integrated 3/8-inch flexible metal conduit connector.
• Provides a 0-10 VDC or 2-10 VDC feedback signal to indicate position and support master-slave applications.

Specifications

• Supply Voltage: 24 VAC at 50/60 Hz or 24 VDC.
• Power Consumption: 7.9 VA running and 5.5 VA holding on AC power; 3.5 W running and 1.9 W holding on DC power.
• Control Input Signal: Proportional 0 to 10 VDC or 2 to 10 VDC; compatible with 0 to 20 mA or 4 to 20 mA using a 500-ohm resistor.
• Rated Torque: 70 lb-in (8 N-m) running and spring return.
• Rotation Angle: 95 degrees maximum.
• Enclosure Rating: NEMA 2 (IP54).
• Operating Temperature: -40 to 140 degrees Fahrenheit (-40 to 60 degrees Celsius).

Applications

• Used for proportional modulation of dampers in Heating, Ventilating, and Air Conditioning systems.
• Suitable for use in building automation systems, variable air volume controls, and energy management setups.
• Conforms to National Electrical Code section 300.22(C) for installation in environmental air-handling spaces other than ducts and plenums, such as the area over a hung ceiling.