Honeywell M7274 Catalog Page

Modutrol IV Motors

M7274 4-20 mA V Modutrol IV™ Motors

The Series 72 Modutrol IV Motors spring return and non-spring
return motors are used to control dampers and valves. The motors
accept a current or voltage signal from an electronic controller to
position a damper or valve at any point between open and closed.

• Integral spring return returns motor to normal position
in the event of power failure on spring return models

• Integral junction box provides NEMA 3 weather protection
if motor is mounted in the upright position

• Motor and circuitry operate from 24 Vac

• Quick-connect terminals are standard--screw terminal adapter is available

• Adapter bracket for matching shaft height of older motors is available

• Motors have field adjustable stroke (90 to 160 degrees)

• Integral auxiliary switches are available factory mounted,
or can be field added

• Spring return motors can operate valve linkages from power end or
auxiliary end shafts for normally closed or normally open valve applications

• All models have dual shafts (slotted and tapped on both ends)

• All models have auxiliary switch cams

• Fixed torque throughout the entire voltage range

• Motors are designed for either normally open or
normally closed valves and dampers

• Models available with adjustable start (zero) and span

• Models available with 4 to 20 mA input signal

• Die-cast aluminum housing

Application Type: Electric
Dimensions, Approximate: 6 7/16 in. high x 5 1/2 in. wide x 7 5/16 in.

deep (164 mm high x 140 mm wide x 185 mm deep)

Fail Safe Mode: Non-Spring Return
Control Signal: Modulating, 4-20 mA
Feedback: No
Frequency: 50 Hz; 60 Hz
External Auxiliary Switches Available: Ye s
Auxiliary Switch Ratings AFL - 120 Vac: 7.2A
Auxiliary Switch Ratings ALR - 120 Vac: 43.2A
Auxiliary Switch Ratings AFL - 240 Vac: 3.6A
Auxiliary Switch Ratings ALR - 240 Vac: 21.6A
Electrical Connections: Screw terminals
Mounting: Foot-mounted
Motor Shafts: Dual-ended shaft
Shaft Shape: square
Shaft Dimensions: 0.375 in. (10 mm)
Shaft Rotation (upon control signal increase): Clockwise (as viewed

from power end) (normally closed)

Deadweight Load on Shaft (Either End): 200 lbs.

Deadweight Load (Combined on both Shafts): 300 lbs.
Ambient Temperature Range: -40 F to +150 F (-40 C to +60 C)
Weight: 7 lb
Approvals
Underwriters Laboratories, Inc: Listed: File No. E4436, Guide No.

XAPX for USA and Canada

Accessories:

4074ERU-Weatherproofing kit. Protects motor from driving rain when

mounted in any position

220736A-Internal Auxiliary Switch Assembly - 1 Switch
220736B-Internal Auxiliary Switch Assembly - 2 Switches
220738A-Adapter Bracket. Adjusts shaft height to match Modutrol III motors
220741A2-72-Screw Terminal Adapter Kit for Series 72 Modutrol IV

Series 2 motors - Converts quick-connect terminals to screw terminals

221455A-Infinitely adjustable Motor Crank Arm
50017460-001-24/120/230 Vac Internal Transformers for Series 2 and 3

Motors

50017460-003-120 Vac Internal Transformers for Series 2 and 3 Motors

Commercial

Components

Torque/Force

Product Number

M7274Q1009/U 75 lb-in. 8.5 Nm 24V 15/27 2 90 degrees Adjustable;

Vo lt ag e

Nominal
Timing
(sec)

Internal
Auxiliary
Switch

Factory
Stroke
Setting Stroke Comments

90 to 160 degrees,
Symmetrical

70-6910 425

Adjustable zero and
span for split range
applications

Internal
Transformerlb-in., lb Nm, N

None