Honeywell ML6874 User Manual

ML6874

Valve Actuator

PRODUCT DATA

FEATURES

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

• Self-contained, motorized valve linkage

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

• Multipose mounting

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

• Compact size for easy installation in
confined area

GENERAL

The ML6874 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 low voltage 3-wire SPDT
Series 20 (on-off) or Series 60 (floating) controllers.

• Field-configurable DIP switches for
Direct/Reverse action

• One device for either Vac or Vdc power
supply application

• 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 02/98
©

Honeywell Ltd. 1998 Printed in Canada

95C-10865

ML6874
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 131° 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)

Accessories/Parts:

272630A--Auxiliary switch assembly (1-SPDT)
272630B--Auxiliary switch assembly (2-SPDT)

272775-- Replacement motor brush kit

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.

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

Shipping Weight:

Approx. 1 kg (2.2 lbs)

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 Relations
Honeywell Limited/Honeywell Limitée

35 Dynamic Drive
Scarborough, Ontario

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, United Kingdom, U.S.A.

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