Honeywell ML7999A Product Data

Universal Parallel-Positioning Actuator

APPLICATION

ML7999A Universal Parallel-Positioning Actuator provides 100 lb-in. torque, pulse-width-modulating (PWM) control of combustion air dampers, butterfly gas valves, oil modulation valves, and flue gas recirculation systems. The actuator includes a precision feedback potentiometer and integral power supply capable of direct line voltage connection. The

ML7999A

PRODUCT DATA

ML7999A Actuator is part of the ControLinks™ Control System, and must be used with the R7999 ControLinks™ Controller.

FEATURES

• Universal power supply input.

• Password protected with an eight-digit hexadecimal identification signal.

• 100 lb-in. (11.3 Nm) torque.

• Includes integral position feedback potentiometer.

• Separate wiring compartment between line voltage power wiring and low voltage control.

• Direct coupling shaft interface mounting.

• Couples directly to a 1/2 in. (13 mm) shaft with no additional parts required.

• Couples directly to 5/16 in. (8 mm) and 3/8 in. (9 mm) shafts using available self-centering shaft reduction accessories.

• Shaft coupler assembly available for shafts larger than 1/2 in.

• Bracket Accessory Kit available for mounting to Honeywell V51 Butterfly Gas Valves.

• Visual indication of actuator position.

Contents

Application ........................................................................ 1

Features ........................................................................... 1

Specifications ................................................................... 2

Ordering Information ........................................................ 2

Installation ........................................................................ 3

Wiring ............................................................................... 4

Operation .......................................................................... 5

Checkout And Troubleshooting ........................................ 5

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ML7999A UNIVERSAL PARALLEL-POSITIONING ACTUATOR

SPECIFICATIONS

Model:

ML7999A Universal Parallel-Positioning Actuator. Medium

torque electronic actuator with a precision feedback potentiometer and integral power supply capable of direct line voltage connection.

Dimensions: See Fig. 1.

Electrical Ratings:

Power Input: 100 to 240 Vac +10% -15%, 50/60 Hz. Maximum Power Consumption: 15 VA.

IMPORTANT

Device must be hardwired.

Temperature Range:

Ambient: -40°F to +140°F (-40°C to +60°C). Storage: -40°F to +150°F (-40°C to +66°C).

Humidity Range (at 95°F [35°C]): 5 to 95 percent relative humidity, noncondensing.

Vibration: 0.0 to 0.5g continuous (V2 level).

Control Signal (at 5 mA current):

Drive Clockwise: Minimum 4.25 Vdc differential between

DR1-DR2.

Drive Counterclockwise: Maximum -4.25 Vdc differential

between DR1-DR2.

NOTE: Actuator does not respond until the 8-digit ID signal

from the R7999 is passed via DR1-DR2.

Feedback Potentiometer: Total Resistance: 5000 ohms ±10%.

Actuator Timing (90° Travel):

Standard: 24 to 30 seconds. Derated Cold-Start Timing (from -40°F to -20°F

(-40°C to -29°¡C): 150 seconds maximum.

Noise Rating: 55 dBA maximum at 1m during normal operation.

Mounting:

Mounts directly on 1/2 in. (13 mm) round or square shaft.

With proper accessories, mounts to 5/16 in. and 3/8 in. (8 mm, 10 mm) round or square shafts; 9/16 in., 5/8 in., and 3/4 in. (14 mm, 16 mm, and 19 mm) round shafts.

IMPORTANT

Tighten hub setscrews to a torque of 60 lb-in. ±10 lb-in.

Position Indicator: Visible with cover on device.

Approvals:

Underwriters Laboratories Inc.: File No. FM Approved. CSA Approved. CE Approved.

Enclosure: NEMA2/IP50.

Actuator Stroke: 95° nominal ± 3°, mechanically limited.

Output Hub Position Accuracy: ±0.1°.

Torque Ratings at Rated Voltages:

Lift and Hold Minimum: 100 lb-in. (11.3 Nm). Breakaway Minimum: 100 lb-in. (11.3 Nm). Stall Minimum: 100 lb-in. (11.3 Nm). Stall Maximum: 150 lb-in. (17 Nm).

Actuator Design Life (at 100 lb-in.):

Full-Stroke Cycles: 100,000 minimum. Repositions: 2,000,000 minimum.

Accessories:

201391 Shaft Adapter for 3/8 in. round or square shaft. 32003167-001 Shaft Adapter for 5/16 in. round or square

shaft. 32003168-001 Shaft Adapter for 3/4 in. diameter round shaft. 32003168-002 Shaft Adapter for 5/8 in. diameter round shaft. 32003168-003 Shaft Adapter for 9/16 in. diameter round shaft. 32003396-001 V51 Mounting Bracket for 1-1/2 in. and

2 in. valves. 32003396-002 V51 Mounting Bracket for 2-1/2 in., 3 in. and

4 in. valves. 32002935-001 ML7999 NEMA3/IP54 Weatherproof Kit.

ORDERING INFORMATION

When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the TRADELINE® Catalog or price sheets for complete ordering number.

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 Automation and Control Products Sales Office (check white pages of your phone directory).

2. Honeywell Customer Care

1885 Douglas Drive North

Minneapolis, Minnesota 55422-4386 In Canada—Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive, Scarborough, Ontario M1V 4Z9. International Sales and Service 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.

65-0239—2 2

(

)

153)

5-1/2

(140)

1-5/8

(41)

1-7/8 (47)

4 (102)

1/2

(13)

7/8 (22)

1/4-28

unF

3-1/2 (89)

ML7999A UNIVERSAL PARALLEL-POSITIONING ACTUATOR

3. Installer must be a trained, experienced service technician.

4. After installation is complete, check out product operation as provided in these instructions.

WARNING

Fire or Explosion Hazard. Can cause property damage, severe personal injury, or death.

Tighten the hub setscrews to a torque of 60 lb-in. (7 N•m).

M16466

Fig. 1. ML7999 dimensions in in. (mm).

WARNING

Electrical Shock Hazard. Can Cause serious injury or death.

Disconnect power supply before installation.

Location

7-1/8 (181

CAUTION

0-5/16 (277)

4-27/32 (123)

2-1/2 (64)

6-7/16 (165)

3-25/3

(96)

Actuator Damage Hazard. Deteriorating vapors and acid fumes can damage the actuator metal parts.

Install actuator in areas free of acid fumes and other deteriorating vapors.

Mounting ML7999 Actuator

The actuator mounts on a 1/2 in. round or square shaft. For shafts smaller than 1/2 in, self-centering adapters are available for 5/16 in. and 3/8 in. shafts. For shafts larger than 1/2 in., adapters are available for 5/8 in., 3/4 in., and 9/16 in.

CAUTION

M17528

Fig. 2. V5197A Firing Rate Gas Valve, with

mounting bracket (included) and ML7999 Actuator

(not supplied), dimensions in in. (mm).

INSTALLATION

When Installing this Product...

1. Read these instructions carefully. Failure to follow them could damage the product or cause a hazardous condition.

2. Check the ratings given in the instructions and on the product to make sure the product is suitable for your application.

Equipment Damage Hazard. Lateral forces on actuator hub will damage actuator.

Ensure actuator is mounted with shaft centered in actuator hub.

1. Place the actuator over the shaft, see Fig. 3.

2. Position and seat the actuator.

3. Rotate the shaft to match the actuator position.

4. Install the mounting bracket accessory (not included),

if needed. See Fig. 4.

5. Partially tighten hub setscrews to ensure actuator seats firmly against mounting bracket with shaft centered in hub.

6. Tighten the anti-rotation bolt to the torque recommendation for the selected bolt/nut.

7. Tighten the hub setscrews against the shaft to a torque of 60 lb-in.

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