M9203-GGB-2Z Johnson Controls Actuator

Overview

The Johnson Controls M9203-GGB-2Z is a high-performance, direct-mount electric spring-return actuator designed to provide proportional modulation of dampers in commercial HVAC systems. Operating on a 24 VAC/VDC power supply, this bidirectional actuator provides 27 lb-in (3 N-m) of running and spring-return torque. It features a fast 90-second constant runtime for 90-degree rotation and an integrated line-voltage auxiliary switch to indicate end-stop positions or perform localized switching functions. Equipped with a microprocessor-controlled brushless DC motor, the unit ensures constant speed independent of load and automatic stall protection without the need for mechanical end switches.

Features

• High Torque Output: Delivers 27 lb-in (3 N-m) of rated running and mechanical spring-return torque.
• Integrated Auxiliary Switch: Features one built-in line-voltage-capable SPDT auxiliary switch for position signaling or control loop integration.
• Fast Runtime: Provides a constant 90-second runtime for 90 degrees of rotation for quick responsiveness.
• Smart Motor Control: Utilizes a microprocessor-controlled brushless DC motor providing constant speed and automatic stall protection.
• Linkage-Free Installation: Direct-mount design attaches easily to round or square damper shafts via a standard universal clamp.

Specifications

• Supply Voltage: 24 VAC (50/60 Hz) or 24 VDC
• Power Consumption: 4.7 VA (AC), 1.8 W (DC)
• Torque: 27 lb-in (3 N-m)
• Rotation Range: 90 degrees nominal
• Motor Runtime: 90 seconds constant runtime for 90 degrees
• Spring Return Time: Less than 25 seconds
• Control Input Signal: Proportional 0(2) to 10 VDC or 0(4) to 20 mA (with field-added 500-ohm resistor)
• Feedback Signal: 0 to 10 VDC or 2 to 10 VDC
• Auxiliary Switch Rating: 1 SPDT switch, line-voltage capable
• Ambient Operating Temperature: 140°F (60°C) maximum

Applications

• Proportional modulation and precise control of dampers in Heating, Ventilating, and Air Conditioning (HVAC) systems.
• Automation of standard ventilation dampers requiring up to 27 lb-in torque without damper linkages.
• High-reliability environmental control applications utilizing electronic controllers or positioners.
• Master-slave configuration setups via the integrated position feedback signal to coordinate multiple damper units.