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PRODUCT DATA

63- 2202- 4

® U.S. Registered Trademark
Copyright © 2000 Honeywell •  All Rights Reserved 

®

Series 72

 Modutrol IV™ Motors

APPLICATION

The Series 72 Modutrol IV 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.

FEATURES

Replaces M744S,T,Y and M745S,T,Y Motors.

M7261, M7274, M7281, M7284, and M7294 are 
non-spring return motors; M7272, M7282, M7285, 
and M7286 are spring return motors.

Oil immersed motor and gear train for reliable 
performance and long life.

Wiring box provides NEMA 3 weather protection.

Actuator motor and circuitry operate from 24 Vac. 
Models available with factory installed transformer 
or an internal transformer can be field added.

Quick connect terminals standard—screw terminal 
adapter available.

Adapter bracket for matching shaft height of older 
motors is standard with replacement motors.

Nominal timing of 30 seconds for 90° stroke and 
60 seconds for 160° stroke.

Valve and damper linkages, explosion-proof housing, 
and auxiliary switches available as accessories.

Spring return motors are rated for 25 lb.-in. and 
60 lb.-in torque.

Non-spring return motors are rated for 35 lb.-in., 
75 lb.-in., 150 lb.-in., and 300 lb.-in. torque.

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.

Die-cast aluminum housing.

Contents

Application ........................................................................

1

Features ...........................................................................

1

Specifications ...................................................................

2

Ordering Information  ........................................................

2

Installation ........................................................................

5

Settings and Adjustments ................................................. 10
Operation and Checkout  .................................................. 12

Summary of Contents for Modutrol IV 72 Series

Page 1: ... available with factory installed transformer or an internal transformer can be field added Quick connect terminals standard screw terminal adapter available Adapter bracket for matching shaft height of older motors is standard with replacement motors Nominal timing of 30 seconds for 90 stroke and 60 seconds for 160 stroke Valve and damper linkages explosion proof housing and auxiliary switches av...

Page 2: ...ormal manufacturing tolerances Therefore an individual unit may not exactly match the listed specifications Also this product is tested and calibrated under closely controlled conditions and some minor differences in performance can be expected if those conditions are changed Modutrol IV Order Number Guide See Table 1 Dimensions See Fig 1 Table 1 Modutrol IV Order Number Guide a Adjustable zero an...

Page 3: ... 60 Hz M17089BB 4 7 8 124 5 1 2 140 13 16 20 4 1 16 103 1 4 7 1 1 2 37 4 1 16 103 4 1 16 103 WIRING BOX MOTOR AUXILARY END POWER END ADAPTER BRACKET 2 9 16 66 5 3 8 137 6 7 16 164 9 16 15 3 4 19 TOP VIEW OF BRACKET TOP VIEW 4 5 8 116 4 1 4 107 2 5 16 58 11 16 17 4 7 8 124 5 9 16 141 1 4 7 5 13 16 148 2 POWER END 1 3 4 5 1 1 2 37 3 4 19 SPRING RETURN MODEL SHOWN SOME MODELS DO NOT HAVE AN AUXILIARY...

Page 4: ...ternal Transformer 24 Vac 50 60 Hz primary 24 Vac secondary for electrical isolation 220736A Internal Auxiliary Switch Kit one switch can be field installed on TRADELINE models 220736B Internal Auxiliary Switch Kit two switches can be field installed on TRADELINE models 220738A Adapter Bracket raises motor shaft height by 19 mm to match that of previous Modutrol Motor models 220741A Screw Terminal...

Page 5: ...quid tight connectors to provide NEMA 3 protection CAUTION Motor Damage Hazard Deteriorating vapors and acid fumes can damage metal parts Install motor in areas free of acid fumes and other deteriorating vapors In excessive salt environments mounting base and screws should be zinc or cadmium plated not stainless steel or brass Use the 220738A Adapter Bracket for mounting on these surfaces Mounting...

Page 6: ...ction For detailed instructions on the assembly of specific linkages refer to the Installation Instructions packed with the linkage CAUTION Equipment Damage Hazard Stalling a motor can damage the drive shaft Ensure installation of motors and linkages allows the motor to drive through full stroke without obstruction Valve Linkages The Q100 Linkage requires a 220738A Adapter Bracket for all valve ap...

Page 7: ...inkage M452E EQUIPMENT BASE ADAPTER BRACKET STANDARD BOLTS 4 MOTOR BOLTS PROVIDED 4 WIRING BOX NON SPRING RETURN SPRING RETURN No 12 OR 1 4 in ZINC PLATED MACHINE SCREWS OR BOLTS 1 1 P O W E R E N D P O W E R E N D P O W E R E N D 1 4 20 UNC 1 in LONG MOUNTING BOLTS Q5001 VALVE LINKAGE M17092 MOTOR WIRING BOX POWER END OF MOTOR VALVE ...

Page 8: ... schematic 6 Refer to Fig 7 and 8 for typical wiring Wire the motor as follows 1 Remove the wiring box cover by removing the four screws holding the cover to the motor 2 Wire motor to system using quick connect terminals in wiring box 3 Replace wiring box cover Fig 5 Terminals and adjustments RIGHT INNER AUXILIARY SWITCH INNER AUXILIARY SWITCH CAM BLUE POWER END OUTER AUXILIARY SWITCH CAM RED LEFT...

Page 9: ...NLY ON SPRING RETURN MODELS OPEN LIMIT CW WINDING OPEN CCW WINDING CLOSE CLOSE LIMIT T1 1 M5511 L1 HOT L2 F T2 ELECTRONIC CIRCUIT TRIAC SWITCHING FEEDBACK POTENTIOMETER TRIAC SWITCHING BRAKE CIRCUITRY 2 3 4 1 2 2 3 4 CONTROLLER L1 HOT L2 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQURED CONNECTING F TO WILL DRIVE MOTOR TO FULLY OPEN 1 M5778 1 MOTOR 2 F T1 T2 2 24V 20 mA ONTR...

Page 10: ...e more than one disconnect CAUTION Equipment Damage Hazard Can damage the motor beyond repair Never turn the motor shaft by hand or with a wrench Forcibly turning the motor shaft damages the gear train and stroke limit contacts Adjustable cams actuate the auxiliary switches These cams can be set to actuate the switches at any angle within the motor stroke Select switch differential of 1 or 10 Moto...

Page 11: ...tacts R B 8 Rotate the cam as follows a If the contacts are open rotate the cam counterclockwise until the R B contacts close b If the contacts are closed rotate the cam clockwise until the R B contacts open c Make final adjustment in the proper direction to obtain contact make or break at the desired position 9 Check for the proper differential and switching of the auxiliary equipment by driving ...

Page 12: ...urrent from the controller changes and unbalance is amplified to energize the Triac switching to run the motor in the proper direction to correct the change in the temperature or the pressure The motor turns the feedback potentiometer to rebalance the circuit and stop the motor Checkout After installation and linkage adjustment operate the motor through the controller Make sure that The motor prop...

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