Modutrol IV Motors Series 90 Manuals




Series 90
 Modutrol IV™ Motors
PRODUCT DATA
FEATURES
• Directly replaces M934A,D, M941, M944A,C,D, 
M945A,D,F, M954, M965, and M975 motors.
• Oil-immersed motor and gear train for reliable 
performance and long life.
• 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 standard—screw terminal 
adapter available.
• Adapter bracket for matching shaft height of older 
motors standard with TRADELINE motors.
• Field adjustable stroke (90° to 160°) models available.
• Nominal timing of 30 seconds for 90° stroke and 60 

seconds for 160° stroke standard. Other timings 
APPLICATION
available.
• Die-cast aluminum housing.
The Series 90 Modutrol IV™ Motors are spring return and 
• Integral auxiliary switches available factory mounted, 
non-spring return modulating proportional control motors. Use 
or can be field added to TRADELINE® models.
these motors with controllers that provide a Series 90 output 
to operate dampers or valves.
• Integral spring returns motor shaft to normal position 
(fully open or fully closed, depending on model) upon 
power interruption.
• Field addable interface modules can be mounted in the 
junction box to upgrade the motor to Series 70 
(electronic) control.
• TRADELINE spring return motors can operate valve 
linkages from power end or auxiliary end shafts for 
normally closed or normally open valve applications.
Contents
Application ........................................................................
1
Features ...........................................................................
1
Specifications ...................................................................
2
Ordering Information  ........................................................
2
Installation ........................................................................
5
Settings and Adjustments .................................................
8
Operation .......................................................................... 10
Replacement .................................................................... 12
® U.S. Registered Trademark
®
Copyright © 2002 Honeywell •  All Rights Reserved 
63-2190-3

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