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ML6194, ML6294 NON-SPRING RETURN DIRECT COUPLED ACTUATORS

63-2511—1

2

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.

SPECIFICATIONS

Models:

ML6194/ML6294 Non-Spring Return DCA:

ML6194A/ML6294A: High Torque (300 lb-in.) DCA without 

auxiliary switches or time-out feature.

ML6194C/ML6294C: High Torque (300 lb-in.) DCA with two 

low voltage rated auxiliary switches and without time-out 

feature.

ML6194D/ML6294D: High Torque (300 lb-in.) DCA without 

auxiliary switches and with time-out feature.

ML6194F/ML6294F: High Torque (300 lb-in.) DCA with two 

low voltage rated auxiliary switches and with time-out 

feature.

Electrical Ratings:

Power Input: 24 Vac, ± 20%, 50 or 60 Hz.

Power Consumption:

ML6194A,C/ML6294A,C: 5 VA at 24 Vac.

ML6194D,F/ML6294D,F: 6 VA at 24 Vac.

Auxiliary Switch Ratings: 24 Vac, 3 AFL, 18 ALR, 1A Pilot 

Duty.

Feedback Resistor (ML6294 only): 

500 ohm linear 

potentiometer. 

Cable Ratings:

Control: Standard models include nonplenum UL/CSA rated, 

30V, 140¡F (60¡C), 20 gauge cable.

Auxiliary Switch: UL/CSA rated 300V, 194°F (90°C), 18 gauge 

cable.

Conduit Fittings: 

Plastic housing has two tapped holes for

 1/2 in. (13 mm) conduit fittings.

Controller Type:

Floating, spdt.

Torque Ratings at Rated Voltages:

Lift, hold, and breakaway ratings are temperature dependent; 

from 250 lb in. to 350 lb-in. (28 N•m to 40 N•m). See Fig. 1.

Stall Maximum: Temperature dependent; 365 lb-in. to 495 lb 

in. (41 N•m to 56 N•m). See Fig. 1.

Torque Derating at 24 ±20% Vac: 

See Fig. 1.

Fig. 1. Minimum and maximum torque 

versus temperature.

Voltage Requirements at Cold Temperatures: 

At -40°F to

 -20°F (-40°C to -29°C), minimum voltage is 24 Vac, +20%,

 -0%.

Actuator Stroke: 

95° nominal ±3°, mechanically limited.

Actuator Timing at 90° Stroke:

165 ±3 seconds synchronous at 60 Hz from -4°F to +140°F 

(-20°C to +60°C).

200 ±3 seconds synchronous at 50 Hz from -4°F to +140°F 

(-20°C to +60°C).

Non-synchronous below -4°F (-20°C).

Ambient Temperature Range: 

-40°F to +140°F (-40°C to 

+60°C).

Storage Temperature Range: 

-30°F to +150°F (-35°C to 

+65°C).

Humidity: 

5 to 95 percent relative humidity, noncondensing.

Mounting:

Mounts directly on 1/2 in. to 3/4 in. (13 mm to 19 mm) round or 

square and 1 in. (26 mm) round shaft, using appropriate 

hub insert.

220

240

260

280

300

320

340

360

380

400

420

440

460

480

500

TO

RQUE-LB. IN

-50

-25

0

25

50

75

100

125

150

TEMPERATURE  F

MINIMUM T

ORQUE

MAXIMUM T

ORQUE

M11266A

Summary of Contents for ML6194

Page 1: ...fts with appropriate insert All models shipped with 1 in insert 300 lb in 34 N m torque Magnetic coupling eliminates need for mechanical stops or limit switch adjustments by limiting stall torque which is dependent on temperature Nominal stall torque at room temperature of 68 F 20 C is 410 lb in 95 stroke provides necessary compression of rubber neoprene gaskets commonly used on 90 low leakage dam...

Page 2: ...Hz Power Consumption ML6194A C ML6294A C 5 VA at 24 Vac ML6194D F ML6294D F 6 VA at 24 Vac Auxiliary Switch Ratings 24 Vac 3 AFL 18 ALR 1A Pilot Duty Feedback Resistor ML6294 only 500 ohm linear potentiometer Cable Ratings Control Standard models include nonplenum UL CSA rated 30V 140 F 60 C 20 gauge cable Auxiliary Switch UL CSA rated 300V 194 F 90 C 18 gauge cable Conduit Fittings Plastic housin...

Page 3: ...hub sizes Dimensions See Fig 2 Fig 2 Approximate dimensions of ML6194 ML6294 Non Spring Return DCA and mounting bracket in in mm 9 32 7 3 PLACES 1 17 32 39 3 3 32 79 4 102 7 16 11 1 1 4 32 7 11 16 196 8 7 16 215 36 914 1 2 12 5 8 17 13 32 10 1 2 13 3 4 19 7 8 22 1 25 3 5 32 80 1 2 13 1 2 13 1 11 16 43 2 1 2 63 3 5 16 84 4 1 2 114 5 127 6 152 1 4 6 1 1 REMOVABLE RETAINING RING FOR HUB SLEEVE REMOVA...

Page 4: ...ion will damage the actuator 1 Deteriorating vapors and acid fumes can damage actuator metal parts 2 Install actuator in areas free of acid fumes and other deteriorating vapors 3 Turning motor output hub by hand or wrench can damage internal gears 4 Ensure declutch button is depressed while manually turning hub Mounting The ML6194 ML6294 Non Spring Return DCA is designed with removable hub inserts...

Page 5: ... 2 Position actuator for best access to actuator shaft locking screw 3 Install mounting bracket see Fig 2 and adjust it to center mounting bracket tab in actuator slot Mark screw holes for installing mounting bracket on housing 4 Remove mounting bracket and actuator 5 Drill mounting holes for screws screws not provided 6 Place actuator and mounting bracket back into position over shaft and install...

Page 6: ...on See Fig 6 through 9 for typical wiring diagrams Fig 6 ML6194A C typical wiring diagram Fig 7 ML6194D F typical wiring diagram Fig 8 ML6294A C typical wiring diagram M11273A MOUNTING BRACKET TO JUNCTION BOX UP TO 3 FT AWAY 30 30 0 60 60 90 L1 HOT L2 1 1 MOTOR 24 VAC B BLUE W YELLOW T2 BLACK ML6194A C M11283A POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED CONTROLLER L1 ...

Page 7: ...tilation flaps and louvers requiring up to 300 lb in torque The ML6194 and ML6294 Non Spring Return DCA are operated by an spdt floating controller When using an spdt floating controller actuator is driven toward fully open clockwise position when controller makes B contact and toward fully closed counterclockwise position when controller makes W contact It stops when neither contact is made L1 HO...

Page 8: ...ould stop TROUBLESHOOTING If actuator does not drive travel full stroke or operate properly during checkout perform following troubleshooting procedure before replacing actuator 1 Check actuator label to make sure proper power and control signal requirements are met 2 When actuator should be driving check for 24 Vac at actuator wires a Black T1 and yellow W or blue B b Black T1 and red T2 3 If vol...

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