Honeywell Modutrol IV 71 Series, Product Data

PRODUCT DATA

63-2640-07

Series 71, 72, and 76

Modutrol IV™ Motors

APPLICATION

The Series 71, 72 and 76 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.

• M7164, M7261, M7284, and M7294 are non-spring 

return motors; M7282, M7285, M7286 and M7685 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.

Contents

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

1

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

1

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

2

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

2

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

5

Settings and Adjustments .................................................

8

Operation and Checkout  .................................................. 11