Honeywell M7274Q1009/U Modutrol actuator

Honeywell M7274Q1009 servo motors with and without spring return are designed to control flaps and valves. To position the flap or valve in any position, from fully open to fully closed, an electronic controller is used that sends a current or voltage signal to the motor.

Specifications

• Designed to replace engines M734H, J; M744S, T, Y; M745L, S, T, Y.

• Built-in return spring returns the motor shaft to its normal position when the power is turned off.

• The built-in junction box provides protection against external conditions of the NEMA 3 class.

• The motor and electrical circuits operate from a voltage of 24 V AC. Models are provided with a transformer installed by the manufacturer or with the possibility of installing a built-in transformer at the place of application.

• Quick-release terminals as standard, an adapter for threaded terminals is provided.

• An adapter bracket is provided to adapt the height of the shaft position in accordance with that for older engines.

• In most engines, the stroke can be adjusted at the installation site (from 90° to 160°).

• Cast aluminum housing.

• Built-in auxiliary switches can be installed by the manufacturer, or added at the place of application.

• The nominal standard full stroke time is 30 seconds (90° stroke) and 60 seconds (160° stroke). Engines with a different full-stroke time can be supplied.

• Spring return motors can be used to move the rods of normally open or normally closed valves from the drive and from the auxiliary end of the shaft.

• All models are equipped with shafts with two working ends (with a groove and an internal thread at both ends).

• All models are equipped with cams for auxiliary switches.

• Constant torque over the entire voltage range.

• The motors are designed for both normally open and normally closed valves and dampers.

Specifications

Input range: Current, unregulated: 4 – 20 mA, nominal; 25 mA, maximum. Current, adjustable: 4 – 20 mA, adjustable; 50 mA, maximum.

Zero (motor in closed position): 0.0 – 18 mA.

Range: 1.8 – 20 mA.

Voltage, unregulated: 2 – 10 In the post. current.

Stroke: In most models, the stroke can be adjusted from 90° to 160° at the engine installation site. Stroke adjustment is carried out using potentiometers located in the wiring compartment.

Full stroke time: Nominal 30 seconds (90° stroke) and 60 seconds (160° stroke).

Static shaft load: 200 lbs (91 kg) at the drive or auxiliary end of the motor shaft; maximum full load 300 lbs (136 kg).

Nominal ambient temperature: -40… +150°F (-40… +66°C). Shaft: 3/8 inch (9.5mm) square.

Gear drive: 900

Number of moves: 14686

Engine speed: 810

Running time: 15

Number of steps: 91.79

Speed: 918

Location

When choosing a location, leave enough space for installing accessories and servicing the engine. When installing outdoors, use moisture-proof connectors and a junction box that provides protection from external conditions of NEMA 3 class. When installed outdoors in any position other than vertical, use the 4074ERU environmental protection kit and NEMA 3 waterproof connectors.

Accessories

220736A – A set of internal auxiliary switches; one switch. Can be added at the installation site.

220736B – A set of internal auxiliary switches; two switches, for TRADELINE models, can be added at the installation site.

220738A is an adapter bracket that raises the motor shaft by 3/4 inch (19 mm) so that the motor can be used instead of previous Modutrol models.

220741A – Threaded terminal adapter turns standard quick-release terminals into threaded terminals.

221455A is a smoothly adjustable crank link that can rotate through the lower position without touching the engine base without installing an adapter bracket.

4074ERU is a NEMA 3 environmental protection kit for Modutrol IV engines mounted in any position except vertical.

50017460-001 – Built-in transformer; 24/120/230 VAC 50/60 Hz on the primary winding, 24 VAC on the secondary winding, quick-release terminals.

50017460-003 – Built-in transformer; 120 V AC 50/60 Hz on the primary winding, 24 V AC on the secondary winding, quick-release terminals.

221455ADW is a crank link that can be rotated through the lower position without touching the engine base without installing an adapter bracket.

Q100 – Traction unit for connecting the Modutrol engine to the throttle valve V51. Requires a 220738A adapter bracket.

Q181 – Auxiliary potentiometer for serial or parallel control of additional modulating motors (series 90) in an amount from 1 to 4.

Q209E,F – Manual potentiometer for Modutrol engines Q5001 – Adapter bracket and valve thrust assembly for connecting the Modutrol IV engine to a water or steam valve.

Q607 is an external auxiliary switch, which is used to control auxiliary equipment by a signal of the position of the motor shaft.

ES650-117 is an explosion–proof housing for installing the engine in an explosive atmosphere. Not applicable with Q5001 (or with other valve thrust assemblies).