Honeywell M7284A1079 Modutrol IV Proportional Actuator

Product Description

M7284A1079 is Honeywell Modutrol IV series modulating electric servo motor, widely used in industrial burner combustion control systems. Rated torque 17Nm (150 lb-in), powered by 120VAC, accepts 2-10VDC proportional control signal. It adopts dual-ended square shaft design, adjustable rotation stroke between 90° and 160°, full travel time 30~60 seconds. Built-in feedback potentiometer provides real-time valve/damper position signal to burner controller. Rugged metal housing, wide ambient temperature range -40°C ~ +66°C, good vibration resistance, for driving gas/oil fuel valves and air dampers on boiler & industrial combustion equipment.

Key Functions

• Proportional modulating control for fuel valve and air damper in combustion system
• 17Nm high output torque, dual-ended square shaft for flexible mechanical connection
• Accept 2-10VDC analog control signal, built-in position feedback potentiometer
• Adjustable rotating angle: 90° or 160°, configurable full stroke time
• 120VAC power supply, reversing motor design for bidirectional rotation
• Metal enclosure, shock & vibration resistant for boiler room harsh environment
• Over-torque mechanical stop protection to avoid mechanical damage

Application Scenarios

• Industrial gas / oil boiler burner fuel and air ratio control
• Thermal plant, heating station combustion safety control cabinets
• Refinery and chemical process heater burner systems
• HVAC large air handling unit damper modulation
• Commercial furnace and thermal fluid heater firing rate regulation

FAQ

Q1: What is the control input signal?
A1: Standard 2-10VDC modulating signal.

Q2: Rated torque and power supply?
A2: 17Nm (150 lb-in), 120VAC power input.

Q3: What are common faults?
A3: No rotation, jitter action, no position feedback, burnt internal coil, stuck gear mechanism.

Q4: Can it replace older Modutrol series motors?
A4: Yes, it is upgraded Modutrol IV version, compatible with most original burner control systems with matching mounting bracket.