Honeywell Modutrol IV M7284 Product Data

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