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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
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