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Honeywell ML7295 Series Product Data

Spring return direct coupled actuators
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APPLICATION
The ML7295 Spring Return Direct Coupled Actuator (DCA) is
a control motor that provides proportional control for dampers
or valves in heating, ventilation, and air conditioning (HVAC)
applications. The actuator accepts either a current or voltage
signal from any electronic controller to position the damper/
valve at any chosen point between fully open and fully closed.
For hydronic valve applications, a complete line of brackets
and linkages are available for mounting Honeywell DCAs on
globe valves and on Honeywell ball valves. The ML7295
provides an electronic feedback signal (0-10 Vdc). This
feedback signal provides indication of the motor output hub
position and can be used for rebalancing an external control
circuit.
® U.S. Registered Trademark
Copyright © 1997 Honeywell Inc. • All Rights Reserved
ML7295 Spring Return
Direct Coupled Actuators

FEATURES

• Brushless DC motor achieves sophisticated control of
speed, torque and braking.
• Provides 142 lb-in. (16 N•m) torque.
• Mounts directly on 3/8 in. to 1 in. (9 to 25 mm) round
and 1/4 in. to 3/4 in. (6 to 18 mm) square shafts.
• Self-centering shaft coupling minimizes installation
time.
• Spring return direction is field-selectable to simplify
installation.
• Manual override permits unpowered positioning to
simplify installation and troubleshooting. Deactivation
of interlock is manual or automatic when power is
restored.
• Highly-visible position indicator facilitates setup,
checkout and troubleshooting.
• Rugged, lightweight all-metal alloy housing provides
durability.
• Integral conduit connection.
• Integral adjustable range-stop.
• Models available with 0-10 Vdc input signal.
• Models available with 4-20 mA input signal.
• Models available with adjustable zero and span.
• Models available with two fully adjustable line voltage
auxiliary switches.
Applications ......................................................................
Features ...........................................................................
Specifications ...................................................................
Ordering Information ........................................................
Installation ........................................................................
Operation .........................................................................
Checkout ..........................................................................
129-237
Rev. 1, 10/97
PRODUCT DATA
Contents
1
1
2
2
3
6
7
63-2539-1

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  Summary of Contents for Honeywell ML7295 Series

  • Page 1: Table Of Contents

    • Models available with 0-10 Vdc input signal. For hydronic valve applications, a complete line of brackets and linkages are available for mounting Honeywell DCAs on • Models available with 4-20 mA input signal. globe valves and on Honeywell ball valves. The ML7295 provides an electronic feedback signal (0-10 Vdc).
  • Page 2: Specifications

    Honeywell, 1885 Douglas Drive North Minneapolis, Minnesota 55422-4386 In Canada—Honeywell Limited/Honeywell Limitée, 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: Installation

    ML7295 SPRING RETURN DIRECT COUPLED ACTUATORS (100) MIN. 95° 1-1/8 (28) 11-13/16 (300) 7-3/4 (197) (230) 1/4 (7) MIN. 5/32 (4) 1-11/32 1-11/32 2-1/2 17/32 3-3/8 (85) 25/32 (63) MIN. (14) (20) (34) (34) 3-15/16 (100) (20) MAX. 1-23/32 (30) 11/32 (10) OPENING FOR 3/8 INCH M12444A...
  • Page 4 ML7295 SPRING RETURN DIRECT COUPLED ACTUATORS CAUTION Measure shaft length If the shaft is less than three inches in length, the shaft coupling Deteriorating vapors and acid fumes must be located between the damper/valve and actuator can damage the actuator. housing.
  • Page 5 ML7295 SPRING RETURN DIRECT COUPLED ACTUATORS 4. Remove the mounting bracket and actuator. CAUTION 5. Drill or center punch the starting holes for the mounting bracket screws (or use no.10 self-tapping sheet metal Manually turning the shaft coupling screws). can damage the actuator. 6.
  • Page 6: Operation

    ML7295 SPRING RETURN DIRECT COUPLED ACTUATORS SERIES 70 CONTROL ML7295 ACTUATOR (MODULATING) CONTROL 8 GREY S1 GREEN/RED SIGNALS – SWITCH SPAN, ∆U S2 GREEN/BLUE 9 PINK S3 GREEN/PINK METER S4 BLACK/RED SWITCH 2 BLACK S5 BLACK/BLUE (HOT) 24 VAC 1 RED S6 BLACK/PINK OFFSET, Uo GND GREEN...
  • Page 7: Checkout

    ML7295 SPRING RETURN DIRECT COUPLED ACTUATORS NOTE: The numerical indication on the dials corresonds to 95° the location of the shaft coupling at which a signal will be given by the switch (see Fig. 9). Once power is restored, the actuator will return to normal automated control.
  • Page 8 ML7295 SPRING RETURN DIRECT COUPLED ACTUATORS 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.

This manual is also suitable for:

Ml7295aMl7295cMl7295h