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ML7984B

VALVE ACTUATOR 

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. 

•  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 

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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