Honeywell Modutrol IV M7284 Product Data
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Series 72
Modutrol IV™ Motors
APPLICATION
The Series 72 Modutrol IV Motors are spring return and non-
spring return motors 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.
FEATURES
• Replaces M734H,J,; M744S,T,Y; and M745L,S,T,Y
Motors.
• M7284, and M7294 are non-spring return motors;
M7285 are spring return motors.
• Integral spring return returns motor to normal position
when power is interrupted.
• Integral junction box provides NEMA 3 weather
protection.
• Motor and circuitry operate from 24 Vac. Models
available with factory installed transformer, or a field
added internal transformer.
• Quick-connect terminals are standard—screw terminal
adapter is available.
• Adapter bracket for matching shaft height of older
motors is available.
• Most motors have field adjustable stroke (90° to 160°).
• Die-cast aluminum housing.
• Integral auxiliary switches are available factory
mounted, or can be field added.
• Nominal timing standard of 30 seconds (90° stroke),
and 60 seconds (160° stroke). Other timings available.
•
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.
• Models available with 2 to 10 Vdc input signal.
Application ........................................................................
Features ...........................................................................
Specifications ...................................................................
Ordering Information ........................................................
Installation ........................................................................
Settings and Adjustments .................................................
Operation and Checkout ................................................... 11
PRODUCT DATA
Contents
1
1
2
2
5
8
Based on 63-2640—08
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Summary of Contents for Honeywell Modutrol IV M7284
- Page 1 Series 72 Modutrol IV™ Motors PRODUCT DATA FEATURES • Replaces M734H,J,; M744S,T,Y; and M745L,S,T,Y Motors. • M7284, and M7294 are non-spring return motors; M7285 are spring return motors. • Integral spring return returns motor to normal position when power is interrupted. •...
- Page 2 TRADELINE® Catalog or price sheets for complete ordering number. If you have additional questions, need further information, or would like to comment on our products or services, please write or phone: 1. Your local Honeywell Environmental and Combustion Controls Sales Office (check white pages of your phone directory). 2. Honeywell Customer Care...
- Page 3 SERIES 72 MODUTROL IV™ MOTORS Fig. 1. Stroke ASYMMETRICAL MOTORS SYMMETRICAL MOTORS VERTICAL VERTICAL VERTICAL VERTICAL REFERENCE REFERENCE REFERENCE REFERENCE FULLY CLOSED FULLY CLOSED FULLY CLOSED FULLY CLOSED FULLY OPEN FULLY OPEN FULLY OPEN FULLY OPEN 90 DEGREE STROKE 160 DEGREE STROKE 90 DEGREE STROKE 160 DEGREE STROKE SPRING RETURN MOTORS AND NON-SPRING RETURN MOTORS...
- Page 4 SERIES 72 MODUTROL IV™ MOTORS TOP VIEW TOP VIEW OF BRACKET 4-7/8 4-1/4 (124) (107) 4-5/8 5-13/16 (116) (148) 5-1/2 2-5/16 (140) (58) 11/16 (17) 13/16 POWER END (20) 1/4 (7) 13/16 (20) 4-7/8 (124) 4-1/16 (103) 1-1/2 (37) 5-9/16 (141) 5-1/2 (140) 1-1/2 (37) JUNCTION...
- Page 5 SERIES 72 MODUTROL IV™ MOTORS Accessories: IMPORTANT 220736B Internal Auxiliary Switch Kit; two switches, can be Always conduct a thorough checkout when field-installed on TRADELINE models. installation is complete. 220738A Adapter Bracket raises motor shaft height by 3/4 in (19 mm) to match that of previous Modutrol Motor models. Location 220741A Screw Terminal Adapter converts the standard quick- connect terminals to screw terminals.
- Page 6 SERIES 72 MODUTROL IV™ MOTORS 3. Attach the motor to the bracket with the four bolts provided. See Fig. 4. STANDARD BOLTS (4) BOLTS PROVIDED (4) WIRING MOTOR ADAPTER BRACKET EQUIPMENT BASE 1 #12 OR 1/4" ZINC PLATED MACHINE SCREWS OR BOLTS M18999 NON-SPRING RETURN SPRING RETURN...
- Page 7 SERIES 72 MODUTROL IV™ MOTORS 3. Replace wiring box cover. JUNCTION MOTOR (HOT) CONTROLLER POWER MOTOR END OF MOTOR Q5001 VALVE LINKAGE POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQURED. CONNECTING F TO – WILL DRIVE MOTOR TO FULLY OPEN. M5778 1/4-20 UNC 1 in.
- Page 8 SERIES 72 MODUTROL IV™ MOTORS SETTINGS AND ADJUSTMENTS (HOT) 4-20 mA Before Setting Stroke CONTROLLER MOTOR 1. Remove the top cover from the motor. 2. Disconnect the controller from the motor. 3. For models with an internal transformer (line voltage motors), ensure that power (and nothing else) remains connected to the motor.
- Page 9 SERIES 72 MODUTROL IV™ MOTORS Zero and Span Adjustment for Turn the start potentiometer slowly counterclockwise until the motor begins to open. This is defined as the M7284Q, M7285Q, and M7294Q start or zero setting. 4. Set the controller current to the value required to drive M7284Q, M7285Q, and M7294Q actuators have the capability the motor to the fully open position.
- Page 10 SERIES 72 MODUTROL IV™ MOTORS Motors with factory added auxiliary switches are shipped in the SEQUENTIAL OPERATION closed position (fully counterclockwise, as viewed from the FOR ADJUSTABLE ZERO AND SPAN MODELS motor power end) with auxiliary cams set to actuate switches 30°...
- Page 11 SERIES 72 MODUTROL IV™ MOTORS MOVE SCREWDRIVER AT NOTE: CAMS ARE OFFSET TOP ONLY TO ADJUST CAM. VERTICALLY TO PROVIDE BETTER VIEW OF BACK CAM. 1/8 INCH STRAIGHT-BLADE SCREWDRIVER RIGHT/INNER SLOW RISE AUXILIARY PORTION SWITCH (APPROX. 10 DIFF.) INNER AUXILIARY (BLUE) FAST RISE PORTION...
- Page 12 SERIES 72 MODUTROL IV™ MOTORS Automation and Control Solutions Honeywell Industrial Combustion Luchthavenlaan 16 1800 Vilvoorde ® U.S. Registered Trademark Belgium © 2012 Honeywell International Inc. Based on 63-2640—08 M.S. Rev. 10-12 hic.emea.honeywell.com Printed in Europe...