Honeywell ML7984B User Manual

The ML7984B is a self-contained, self-adjusting,
linear motorized linkage that mounts directly
onto V5011 two-way or V5013 three-way valves
and provides up to 19 mm (3/4") of linear travel
(stem lift). For use with a Pulse Width Modulating
or alternately a 2-10Vdc analog signal controller.

ML7984B

VALVE ACTUATOR

• Allows the use of one common transformer power
supply for multiple actuators and controllers

• Field configurable DIP switches for 5 PMW modes
and 2-10Vdc signal inputs.

• Field configurable DIP switches for Direct / Reverse
action

• One device for either Vac or Vdc power supply
application

• Compatible with 3 -wire system (one common wire
for both signal & power inputs)

• For 1/2" to 3" V5011 / V5013F &G valves

• Self-contained, motorized valve linkage.

• Linkage self-adjusts to valve stroke of up to 19 mm (3/4")

• Multipoise mounting

• Strong valve seat closing force 710 Newton (160
lbs.)

• Compact size for easy installation in confined areas

• Electronic current sensing provides internal
protection and positive full closing force

• Field-addable auxiliary switches available

CONTENTS

Specifications.......................................... 2

Order information................................... 2

Installation.............................................. 3

Wiring Schematics.................................. 5

Operation and Checkout......................... 6

PCY • 2-96 • © Honeywell Ltd. 1996 • Printed in Canada * Form number 95C-10808

ML7984B
SPECIFICATIONS • ORDERING INFORMATION

Specifications

IMPORTANT:

The specifications given in this publication do not include
normal manufacturing tolerances. Therefore, an individual
unit may not exactly match the listed specifications. Also,
this product is tested and calibrated under closely controlled
conditions and some minor differences in performance can
be expected if those conditions are changed.

Ambient Rating:

Operating Temperature:
0° C to 55° C (32° F to 130° F)
Shipping Temperature:

-40° C to +65° C (-40° F to 150° F)
Relative Humidity:
15% to 95% at 40° C (104° F)

Acoustic Noise:

55 dBA max. Sound Pressure Level at 1 m (39") distance.

Electrical Ratings:

Power supply/consumption:
24V (Nominal), 50/60Hz or
24 to 28 Vdc
6VA(Running), 12VA(Valve seating)

Input Impedance:

20 KΩ

Shipping Weight:

Approx. 1 kg (2.2 lbs)

Accessories/Parts:

272630A--Auxiliary switch assembly (1-SPDT)
272630B--Auxiliary switch assembly (2-SPDT)
40003793-003--Mounting hardware bag assembly

Mechanical Ratings:

Stroke--19mm (3/4") or less
Stroke timing-- Approx. 63 seconds for 3/4" stroke
Closing Force-- 710N (160 lbs.) Nominal*

*Rating applies to both directions.

Performance Specifications:

Life Expectancy-- (at rated load and power conditions)
50,000 full stroke cycles plus
1,000,000 repositions at 10% stem travel or 10 years,
whichever occurs first.

Input Signal:

PWM: 10-24Vac or Vdc non-directional pulses
Analog: 2-10Vdc

Note: rapid repositioning will result in reduced service
life of the actuator.

Ordering Information

When purchasing replacement and modernization products from your wholesaler or distributor, refer to the price sheets
for complete ordering number, or specify--

1. Model number.

2. Valve body type and model number.

3. Accessories, if desired.

If you have additional questions, need further information, or would like to comment on our products or services, please
write or phone:

1. Your local Honeywell Home and Building Control Sales Office ( check white pages of your phone directory ).

2. Home and Building Control Customer Service Department
Honeywell Limited/Honeywell Limitée

35 Dynamic Drive
Scarborough, Ontario

Canada M1V 4Z9

In U.S.A. --Honeywell, 1885 Douglas Drive North, Minneapolis, Minnesota 55422-4386

International Sales 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.

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