Honeywell ML6984 User Manual Download Page 1

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PRODUCT DATA

95C-10939-11

ML6984, ML7984 Series 4000
Direct Coupled Valve Actuators

FEATURES

• Self-contained, motorized globe valve linkage.

• Microprocessor-based digital position sensing and

motor control for accurate positioning.

• Compact size for easy installation in confined spaces.

• NEMA 3R rain-proof cover for outdoor installation.

• Self-calibrating for valve stroke from 1/2 in. (13 mm)

to 1 in. (25 mm).

• DIP switch input configuration selection.

• LED (light-emitting diode) status indication.

• Configurable to 3-wire mode for floating models.

• 710 N 160 lbf (712 N) valve closing force.

• Usable with common transformer power supply for

multiple actuators and controllers.

• 24 Vac or 28 Vdc power supply.

• Field-addable position feedback/auxiliary switch

module available for 5-wire models.

APPLICATION

The ML6984 and ML7984 are self-contained, self-
adjusting, motorized valve actuators that mount directly
onto V5011 two-way and V5013 three-way globe valves,
providing linear stem operation between 1/2 in. (13 mm)
and 1 in. (25 mm).

ML6984 is for use with low voltage SPDT Series 20, Series
60 (on-off), or SP3T Series 60 (floating) electro-
mechanical and electronic controllers.

ML7984 is for use with Series 70 0-10 Vdc, 2-10 Vdc, 4-20
mA; electronic Series 90 “SuperMod”; and 135 ohm
modulating controllers.

Contents

Specifications ...............................................................................

Ordering Information ................................................................

Installation ....................................................................................

Wiring Schematics .....................................................................

Operation .......................................................................................

Replacement Notes .................................................................... 10
Checkout ........................................................................................ 11
Troubleshooting .......................................................................... 12

Summary of Contents for ML6984

Page 1: ... supply for multiple actuators and controllers 24 Vac or 28 Vdc power supply Field addable position feedback auxiliary switch module available for 5 wire models APPLICATION The ML6984 and ML7984 are self contained self adjusting motorized valve actuators that mount directly onto V5011 two way and V5013 three way globe valves providing linear stem operation between 1 2 in 13 mm and 1 in 25 mm ML698...

Page 2: ...istance Electrical Ratings Power supply consumption 24 V 10 15 50 60 Hz or 28 Vdc 10 6 VA Run ning 12 VA Valve seating CE Certified Inputs ML6984 25 mA 24 Vac 5 wire mode only 500 mA valve seating 3 wire mode Minimum Signal Input Duration 100 ms ML7984 2 10 Vdc 1 mA 4 20 mAdc May be used with 0 10 Vdc input but valve will be closed at 2 Vdc Input Impedance for the ML7984 Voltage Source 20 KW ohm C...

Page 3: ...lations Honeywell assumes no responsibility for damages or injuries resulting from non compliance with installation instructions or standard good practice when mounting operating or maintaining the valves even if not explicitly mentioned in the installation instructions Observe all safety practices when working with steam systems Mounting 1 Ensure that valve body is installed correctly arrow point...

Page 4: ... age the threads or other parts of the stem 4 Orient the conduit hole to the most desirable direc tion then tighten the LOCKNUTS on the U bolt 5 Remove the plastic cover from the MLx984 by loos ening the two captive screws located on the top Drop the Allen Hex type of set screw included in the plas tic bag into the top of the shaft hex side up 6 Tighten the set screw to lock valve stem in place Fi...

Page 5: ... CAN SHARE SAME TRANSFORMER PROVIDED THAT THE VA RATING OF THE TRANSFORMER IS NOT EXCEEDED AND PROPER PHASING IS OBSERVED DO NOT MIX A C AND D C POWER SOURCES CONTROLLER CAN BE LOW VOLTAGE SPDT SERIES 20 ON OFF OR SP3T SERIES 60 FLOATING TRI STATE TYPE TERMINALS R AND T5 ARE CONNECTED INSIDE THE ML6984 1 2 3 1 2 3 M25493A 3 1 3 W R B T6 T5 C H ML6984 TYPICAL ELECTRONIC CONTROLLER L1 L2 POWER SUPPL...

Page 6: ...EM MOVES UPWARDS WITH SIGNAL INCREASES TO 10V 20MA ALWAYS TURN POWER OFF BEFORE SETTING ANY DIP SWITCHES 1 2 3 4 5 3 2 1010 10 2 VDC REVERSE ACTING 3 2 3 2 M25496A T5 T6 L1 L2 28 VDC ML7984 R W C T5 T6 OR SIGNAL SOURCE C R W T5 T6 ML7984 ML7984 SLAVE R W C T5 T6 24 VAC FUNCTION DIP SWITCH CONFIGURATION X000 4 20 MA DIRECT ACTING X010 20 4 MA REVERSE ACTING 1 2 3 4 ON 1 OFF 0 1 2 3 4 ON 1 OFF 0 POW...

Page 7: ...SELECT DEVICE FUNCTIONS DIRECT ACTING FUNCTION ACTUATOR STEM MOVES UPWARDS WITH SIGNAL INCREASE OR REVERSE ACTING FUNCTION ACTUATOR STEM MOVES DOWNWARDS WITH SIGNAL INCREASE 5 TURN POWER OFF BEFORE SETTING ANY DIP SWITCHES FOR COMMON TRANSFORMER AND COMMON CONTROLLER APPLICATION PLEASE CONSULT THE FACTORY 6 MAXIMUM RESISTANCE PER CONTROL CIRCUIT OF 280 OHM M25497A B R W T6 T5 B R W B R W T6 T5 B R...

Page 8: ...ES TO 10V 20MA OR REVERSE ACTING FUNCTION ACTUATOR STEM MOVES DOWNWARDS WITH SIGNAL INCREASES TO 10V 20MA 5 TURN POWER OFF BEFORE SETTING ANY DIP SWITCHES R W R W M25499A T6 T5 B R W ML7984 T6 T5 B R W L1 L2 OR 28 VDC 24 VAC T5 T6 ML7984 ML7984 T6 T5 B R W R W ELECTRONIC SERIES 90 W973 T775 H775 W7100 NOTE POLARITY SENSITIVE CHECK CONNECTIONS W to R R to W L1 L2 L1 L2 OR OR 28 VDC T5 T6 28 VDC T5 ...

Page 9: ...nect power supply before beginning installation to prevent electrical shock and equipment damage All wiring must comply with applicable local electrical codes ordinances and regulations Make certain that the voltage and frequency of the power supply correspond to the rating of the device DO NOT electrically operate the MLx984 actuator before assembly to the valve because damage not apparent to the...

Page 10: ...base between terminals Rc and Y This is needed for electrical compatibility with ML6984 but may result in wider room temperature swings due to the loss of anticipation REPLACEMENT NOTES Fig 18 ML6984 with Honeywell T87K Round Thermostat See Fig 19 if connecting TH5110D or TH6110D FocusPRO thermostats to ML6984 Configure the thermostats for Series 20 operation Fig 19 ML6984 with FocusPro Electronic...

Page 11: ...endent output switch is needed wire the 2 10 Vdc position feedback signal to an Approved adjustable voltage controlled relay CHECKOUT ML7984 1 Make sure the valve stem is completely screwed into the actuator drive shaft with no threads showing before applying power 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 2...

Page 12: ...P switch settings Check against Product Instruction Sheet Noisy Motor Bearing failed due to overheat 1 Check for excessive temperature and replace complete actuator 2 Use high temperature kit 43196000 001 Brushes worn out Check for excessive cycling and replace actuator Motor overheats smoke component burn out Current sensing circuit failed or electronic components failed Replace actuator Make sur...

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