Honeywell M847D Automobile Parts User Manual
Contents
1. Mounting 1 Ensure that the valve body is installed correctly that is the arrow points in the direction of the flow 2 Although the actuator can be mounted in any position it is preferable that the ML7984 is mounted above the valve body This will minimize the risk of damage to the ML7984 in the event of condensation or a valve gland leak 3 Remove the stem button Fig 3 from the valve stem 4 Slide the position 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 is completely attached with no threads showing by turning the valve actuator in a clockwise direction as viewed from above depending on the valve models use a pin or wrench to keep valve stem from turning Note that the valve actuator is shipped with drive shaft in the mid position 3 Care should be exercised when using the TOOLS on the valve stem during tightening Fig 4 DO NOT damage the threads or other parts of the stem 4 Orient the conduit hole to the most desirable direction then tighten the LOCKNUTS on the U bolt ML7984B INSTALLATION Position Indicator Plastic Disk Remove Stem B2. Honeywell ML7984B VALVE ACTUATOR The ML79S84B 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 e Allows the use of one common transformer power e Multipoise mounting supply for multiple actuators and controllers e Strong valve seat closing force 710 Newton 160 e Field configurable DIP switches for 5 PMW modes Ibs and 2 10Vdc signal inputs e Compact size for easy installation in confined areas e Field configurable DIP switches for Direct Reverse action e Electronic current sensing provides internal protection and positive full closing force e One device for either Vac or Vdc power supply application e Field addable auxiliary switches available e Compatible with 3 wire system one common wire for both signal amp power inputs e For 1 2 to 3 V5011 V5013F amp G valves e Self contained motorized valve linkage CONTENTS e Linkage self adjusts to valve stroke of up to 19 mm 3 4 PCY 2 96 e Honeywell Ltd 1996 Printed in Canada Form number 95C 10808 ML7984B SPECIFICATIONS ORDERING INFORMATION IMPORTANT The specifications given in this publication do not include normal manufacturing tolerances Therefore an individual unit may not exactly match the listed specifi
3. actuator GENERAL NOTE 1 For correct valve operation the ML7984 must be field configured with the DIP switches which are located beside the terminal block see 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 amp T6 must not be less than 22Vac or 24Vdc during running or force generating stages Home and Building Control Honeywell Limited Limit e 155 Gordon Baker Road North York Ontario Canada M2H 3N7 A N CAUTION 1 Disconnect power supply before beginning installation to prevent electrical shock and equipment damage 2 All wiring must comply with applicable local electrical codes ordinances and regulations 3 Make certain that the voltage and frequency of the power supply correspond to the rating of the device 4 DO NOT electrically operate the ML7984 before assembly to the valve because damage not apparent to the installer may occur Home and Building Control Honeywell Inc 1985 Douglas Drive North Golden Valley Minnesota 55422 Checkout 1 Make sure the valve stem is completely screwed into the actuator drive shaft with no threads showing 2 Make sure the valve stem is locked in place with the set screw 3 Make sure the Configuration DIP switches are set correctly 4 With 24Vac or 28Vdc power source co
4. cations 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 Specifications Input Impedance 20 KQ Shipping Weight Approx kg 2 2 Ibs 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 Ibs 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 distribu
5. nnected to T5 amp T6 actuator operation can be verified by connecting appropriate control signal PWM or 2 10Vdc from controller to the signal input terminals Fig 7 For direct acting A modulating action can be obtained simply by increasing the control signal width or level The actuator will travel from a fully closed position Stem down to a fully open position Stem up For 2 10Vdc mode actuator defaults to closed position on signal failure For reverse acting Decreasing controller signal width or level will drive actuator from fully closed Stem down to a fully open position Stem up For 2 10Vdc mode actuator defaults to open position on signal failure 5 Operate the system valve actuator and controller for several cycles to ensure proper installation 6 When checkout is completed return the controller to the desired setting NOTE Device will ignore any input changes until it has completed its repositioning relative to the initial signal input Honeywell Helping You Control Your World www honeywell com building components
6. phasing is observed mr T5 and W terminals are factory connected internally Device is compatible with the 3 wire control system Use configuration DIP switches to select device functions Direct acting function actuator stem moves upwards ZS with signal increases or Reverse acting function actuator stem moves downwards with signal increases VAN Use either one controller only MODE DIP SWITCH PWM min 0 1 sec 0 01 sec increments max 2 65 sec on PWM min 0 1 sec 0 02 sec increments max 5 20 sec off g Direct PWM min 0 1 sec 0 05 sec increments max 12 85 sec Acting PWM min 0 1 sec 0 10 sec increments max 25 6 sec on off a Reverse Acting Analog 2 10 Vdc PWM min 0 59 sec 0 00918 sec increments max 2 93 sec NOVAR Configuration DIP switches 3 A NOTE located adjacent to the input Turn power off before setting the DIP switches Fig 7 Wiring for ML7984B actuators ML7984B OPERATION AND CHECKOUT Operation and checkout Operation The recommended valve actuator power source is a class 2 24V transformer or 28Vdc across terminals T5 amp T6 See Fig 7 The internal circuitry provides dc power for the electronic sensing and drive motor circuits The sensing circuits respond to the signal across the input terminals based on the configuration DIP switches setting At the end of the valve stroke the actuator continues to drive and g
7. radually develops the necessary force for positive valve close off The actuator motor stops automatically when the motor current reaches the predetermined current amp force level PWM mode The ML7984B is controlled by an intermittent voltage pulse whose width varies in proportion to the desired actuator position This called pulse width modulation PWM The PWM signal has two parts a fixed pulse of a set width to indicate a signal presence e g 0 1 s and a varible width portion incremented in proportional to the signal percentage There are 255 increments available e g 0 01 s Thus the pulse width will be the minimum width plus the number of increments times the incremental value e g stroke mid position is 0 1s 128 x 0 01s 1 38 s The ML7984B supports 5 different PMW timebased modes 2 10 Vdc mode Control signal between signal input terminals is compared to similar voltage across the actuator feedback potentiometer When these voltages are equal the drive motor and drive shaft are stationary As long as the value of controlled medium remains at the controller setpoint the circuit is in balance and the actuator does not run When the value of the controlled medium changes the controller output voltage is changed causing reference voltages in the circuit to be out of balance As the actuator moves in the direction to correct the medium change the feedback potentiometer also moves to rebalance the circuit and stop the
8. tor 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 Limit e 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 i 1 0 HUT be Lz i ap Enoch ut ML7984B SPECIFICATIONS INSTALLATION oe a F mej i 1 21 BE 7 88 AGUATING OA co D E FIG 1 DIMENSIONS OF ML7984 VALVE ACTUATOR IN MM INCHES 10 cm 4 in for Actuators with auxiliary switches 8 cm 3 in we te nenge a 30 cm 12 in Minimum Mounting Clearance FIG 2 MINIMUM MOUNTING CLEARANCE A N CAUTION 1 Installer must be a trained service technician 2 DO NOT electrically operate the ML7984 before assembly to the valve because damage not apparent to the installer may occur Installation
9. utton a Assembly of the position indicator FIG 3 PREPARATION FOR VALVE ASSEMBLY 5 Remove the plastic cover from the ML7984 by loosening the two screws located on the top Note These screws are captive Rotate three complete revolutions to remove cover Drop either slot headed or Allen hex type of set screw both are 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 A N 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 Gy FIG 5 U BOLT ASSEMBLY E DO NOT DAMAGE ANY PART OF THE STEM U boit A Yoke Thread Actuator shaft to valve stem by rotating in a clockwise direction Tighten U bolt nuts to secure linkage to vaive body Valve Bonnet A FIG 4 ASSEMBLY OF ML7984 TO VALVE 5 mm 3 16 in Slotted Screwdriver Linkage Set Screw Valve Stem FIG 6 LOCKING ML7984 DRIVE SHAFT TO VALVE STEM ML7984B WIRING AS SIGNAL SOURCE N ML7984B N 2 10 Vde PWM OO 28 Vdc A lt as Allow 0 5 amps maximum for each device Actuators and controller can share same transformer providing the VA rating of the transformer is not exceeded and proper
Download Pdf Manuals
Related Search