Ing Mecanico

Series 90 Modutrol IV™ Motors
PRODUCT DATA

FEATURES
• Replaces M934A,D, M941, M944A,C,D, M945A,D,F, M954, M965, and M975 motors. • Integral junction box provides NEMA 3 weather protection. • Integral spring return returns motor to normal position when power is interrupted. • Motor and circuitry operate from 24 Vac. Models available with factory installed transformer, or a field addedinternal transformer. • Quick-connect terminals are standard—screw terminal adapter is available. • Adapter bracket for matching shaft height of older motors is available. • 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 form 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 ornormally closed valves and dampers. • Field addable interface modules can be mounted in the junction box to upgrade the motor to Series 70 (electronic) control.

APPLICATION
The Series 90 Modutrol IV™ Motors are spring return and non-spring return modulating proportional control motors. Use these motors with controllers that provide a Series 90 output to operate dampers or valves.

ContentsApplication ........................................................................ Features ........................................................................... Specifications ................................................................... Ordering Information ........................................................ Wiring............................................................................... Settings and Adjustments ................................................. Operation .......................................................................... Checkout .......................................................................... Replacement .................................................................... 1 1 2 2 7 10 11 13 13

63-2631-05

SERIES 90 MODUTROL IV™MOTORS

SPECIFICATIONS
TRADELINE Models: Selected and packaged to provide ease of stocking, ease of handling and maximum replacement value. Specifications are the same as those of standard models unless specified otherwise.

NOTE: Auxiliary switches can only be added to motors that include auxiliary switch cams. (These cams cannot be field-added.) Modutrol IV Order Number Guide: See Table 1.Table 1. Modutrol IV Series 3 Version Order Number Guide. M Motor 91 94 Proportioning Series 90 Control Flame Safeguard Firing Rate Motor 6 7 8 9 1 2 4 5 A B C D E M 91 8 4 A Dual-ended shaft 60 lb-in. Spring Return 35 lb-in. Non-Spring Return 75 lb-in. Non-Spring Return 150 lb-in. Non-Spring Return 300 lb-in. Non-Spring Return Non-Spring Return Normally Closed (NC) Spring Return Non-SpringReturn Normally Closed (NC) Spring Return 0 Auxiliary Switches 1 Auxiliary Switch 2 Auxiliary Switches 0 Auxiliary Switches 1 Auxiliary Switch XXXX See Catalog for Complete O.S. Number Adjustable Stroke Normally Closed

NOTE: Torque designation corresponds to torque rating at standard timing (nominally 60 sec for 160° and 30 sec for 90° except for 300 lb-in. motors which have timings of 2 or 4min). Dimensions: Refer to Fig. 2. Electrical Ratings: Refer to Table 2. Control Inputs: Proportional, Series 90. NOTE: Motor Series 90 control can be either Electronic, or Mechanical (135 ohm). Auxiliary Switch Ratings: Refer to Table 3. Ambient Temperature Ratings: Maximum: 150° F (66° C) at 25% duty cycle. Minimum: -40° F (-40° C). NOTE: 25% duty cycle indicates that the motor operates for 6 out...