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Honeywell ML9185 Manual
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Honeywell ML9185 Manual

Spring return direct coupled rotary actuator
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GENERAL

The ML9185 Spring Return Direct Coupled Rotary Actuator is
a proportioning control motor that can be used with Series 90
controls to operate dampers in heating, ventilation, and air
conditioning (HVAC) applications.
Copyright © 1996 Honeywell Inc. • All Rights Reserved
ML9185 Spring Return
Direct Coupled Rotary Actuator

FEATURES

• Mounts directly on horizontal 3/8 in., 1/2 in., and 5/8 in.
round and square damper shafts by using the
appropriate insert. Most models shipped with 1/2 in.
insert.
• Provides 50 lb-in. running and spring return torque.
• Magnetic coupling eliminates the need for mechanical
stops or limit switch adjustments by limiting stall
torque to 130 lb-in. maximum.
• 95° stroke provides necessary compression of rubber/
neoprene gaskets commonly used on 90° low leakage
dampers.
• Removable splined output hub permits premounting
of the hub on the damper shaft, providing installation
flexibility.
• Reversible mounting allows actuator to be used for
either clockwise (cw) or counterclockwise (ccw) spring
rotation.
• Designed for both single-point and three-point
mounting, providing installation flexibility.
• Available with or without a time-out feature. Models
without the time-out feature are designed to be used
with intelligent building management system and/or
controller.
• Standard models have two 8 mm by 12 mm long set
screws for securing the damper shaft. Actuator models
are available for various shaft sizes that allow the
damper shaft to operate centered inside the output hub.
• Standard one-meter cable with color-coded leadwires
for external wire connections with 1/2 in. conduit
connectors.
• Can mount two or more actuators on one damper
shaft to increase output torque for use on dampers
larger than 16 square feet.
General ............................................................................... 1
Features .............................................................................. 1
Specifications ...................................................................... 2
Ordering Information ........................................................... 2
Installation ........................................................................... 4
Operation ............................................................................ 9
Checkout ............................................................................. 10
PRODUCT DATA
CONTENTS
63-2494-1

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Summary of Contents for Honeywell ML9185

  • Page 1: Table Of Contents

    • Available with or without a time-out feature. Models without the time-out feature are designed to be used with intelligent building management system and/or The ML9185 Spring Return Direct Coupled Rotary Actuator is controller. a proportioning control motor that can be used with Series 90 •...

  • Page 2: Specifications

    Honeywell Inc., 1885 Douglas Drive North Minneapolis, Minnesota 55422-4386 In Canada—Honeywell Limited/Honeywell Limitee, 35 Dynamic Drive, Scarborough, Ontario M1V 4Z9. International Sales and Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France, Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A.
  • Page 3 (28) ± 15 13/32 13/64 (5) (10) 3/4 (19) 5/16 1-13/32 (36) (10) 4-13/32 (112) 1-5/8 (41) 10-13/32 (264) MOUNTING BRACKET M8257 Fig. 1. Approximate dimensions of ML9185 Spring Return Direct Coupled Actuator and mounting bracket in in. (mm). 63-2494—1...

  • Page 4: Installation

    Position Indicator: Mounted on actuator hub. Mounting Actuator Design Life: The ML9185 Direct Coupled Actuator is designed to operate Full Stroke Cycles: 60,000. a damper by driving the damper shaft either cw or ccw Repositions: 1,500,000.
  • Page 5 Most ML9185 Actuators are shipped with a 1/2 in. hub bracket screws. sleeve. For field use, several hub sleeve sizes are available.
  • Page 6 ML9185 SPRING RETURN DIRECT COUPLED ROTARY ACTUATOR INDICATOR DETENTS 1 COUNTERCLOCKWISE SPRING ROTATION ARROW M7230A Fig. 4. ML9185 Actuator mounted for counterclockwise spring rotation with output hub inside actuator. (NOTE: NEMA rating applies only with damper shaft in horizontal position.) 63-2494—1...
  • Page 7 ML9185 SPRING RETURN DIRECT COUPLED ROTARY ACTUATOR M7229 Fig. 5. Standard direct coupled mounting of ML9185 to damper with counterclockwise spring rotation. 63-2494—1...
  • Page 8 All wiring must comply with local electrical codes, ordinances and regulations. The ML9185 is designed for use with a Class 2 power supply. Voltage and frequency of the transformer used must correspond with the characteristics of the motor and with those of the power supply.

  • Page 9: Operation

    ML9185 SPRING RETURN DIRECT COUPLED ROTARY ACTUATOR OPERATION Connecting ML9185 Actuators in Parallel ML9185 Actuators can be stacked on one damper shaft to increase the output torque required to drive dampers larger The ML9185 Direct Coupled Actuator is designed to be used than 16 square feet.

  • Page 10: Checkout

    Connect 24 Vac to the appropriate leadwires (red to CHECKOUT blue or red to yellow). Increase the control signal to move the damper to the opposite position. The ML9185 The ML9185 Direct Coupled Actuator can be checked out should drive the damper.
  • Page 11 ML9185 SPRING RETURN DIRECT COUPLED ROTARY ACTUATOR 63-2494—1...
  • Page 12 ML9185 SPRING RETURN DIRECT COUPLED ROTARY ACTUATOR Home and Building Control Home and Building Control Honeywell Asia Pacific Inc. Honeywell Inc. Honeywell Limited-Honeywell Limitée Room 3213-3225 Honeywell Plaza 155 Gordon Baker Road Sun Hung Kai Centre P.O. Box 524 North York, Ontario No.