Johnson Controls M9108-GGC-2 Actuator

The Johnson Controls M9108-GGC-2 Actuator is a professional-grade, non-spring return direct coupled actuator engineered for precise control of HVAC dampers and valves. Offering a robust 70 lb-in torque, this proportional control actuator supports a wide range of input signals, including 0-10Vdc, 2-10Vdc, and 4-20mA (via the integrated 500 ohm resistor). Designed for versatility, the M9108-GGC-2 is a direct replacement for the DM24-70-A and M9106-GGC-2 models. It features a high-speed 25-50 second travel time and is equipped with two SPDT auxiliary switches for position signaling. The unit’s electronic stall detection protected DC motor ensures longevity by deactivating power if an obstruction is met, eliminating the need for end-stop switches. Field installation is streamlined with screw terminals and a manual gear release for easy commissioning and damper shaft alignment.

• Universal Compatibility: Seamlessly replaces legacy units like the DM24-70-A and M9106-GGC-2 in existing HVAC control systems.
• Enhanced Reliability: Integrated electronic stall detection prevents motor burnout during high-load or blocked conditions.
• Dual Feedback Support: Includes two built-in SPDT auxiliary switches for accurate end-of-travel verification and sequencing.
• Flexible Installation: Direct mounting onto round shafts up to 3/4" or square shafts up to 5/8" without the need for additional linkages.
• Precise Control: Jumper-selectable rotation direction and 0-90° mechanical angle adjustment in 5-degree increments.

• How do I wire the M9108-GGC-2 for 4-20mA signals? Utilize the on-board 500 ohm resistor across the input terminals to convert the current signal to the 2-10Vdc range required by the processor.
• Can this actuator be used for fail-safe applications? No, this is a non-spring return model. It will maintain its last position upon loss of power. Use the M9200 series if a spring-return safety function is required.
• What size damper can the M9108-GGC-2 handle? With 70 lb-in of torque, it typically manages dampers up to 17.5 square feet, depending on the seal type and pressure.

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.