Honeywell ML7984B User Manual Download Page 2

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 Signal: 

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

Input Impedance: 

20 K

Ω 

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. 

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 

O

ffice ( 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  M

1V 4Z9 

In U.S.A.  --

Honeywell

1

8

85 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.

 2 

Summary of Contents for ML7984B

Page 1: ...rect 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...

Page 2: ...iming 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 repositioning will result in reduced service life of the actuator Ordering Information When purch...

Page 3: ...sition indicator plastic disk or rubber O ring over the valve stem See inset Fig 3 Indicator will self align to the marking on the yoke after one complete operating cycle Assembly of ML7984 to the valve 1 The drive shaft of the ML7984 has a threaded hole to link with the valve stem Slide the yoke over the valve bonnet Fig 4 2 Thread the ML7984 drive shaft onto the valve stem all the way until it i...

Page 4: ...re included in the plastic bag into the top of the shaft slot hex side up 6 With a 5 mm 3 16 Slotted screwdriver or 1 8 x 6 Allen wrench included in the plastic bag tighten the set screw to lock valve stem in place Fig 6 WARNING For proper valve operation valve stem must be threaded into the actuator all the way with no threads showing and locked in place with the set screw provided FIG 4 ASSEMBLY...

Page 5: ...with signal increases or Reverse acting function actuator stem moves downwards with signal increases Use either one controller only 1 2 3 on off 4 on off Reverse Acting 4 on off Direct Acting MODE DIP SWITCH PWM min 0 1 sec 0 01 sec increments max 2 65 sec PWM min 0 1 sec 0 02 sec increments max 5 20 sec PWM min 0 1 sec 0 05 sec increments max 12 85 sec PWM min 0 1 sec 0 10 sec increments max 25 6...

Page 6: ...wiring diagram for details Turn power off before setting the DIP switches 2 There is a short delay in actuator response upon every signal change It is to screen any unwanted incoming signals 3 For proper operation voltage on the T5 T6 must not be less than 22Vac or 24Vdc during running or force generating stages CAUTION 1 Disconnect power supply before beginning installation to prevent electrical ...

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