Honeywell ML6161, ML7161, ML6174, ML7174 Data Sheet

ISO 9001

35 and 70 lb-in. Non-Spring Return Direct Coupled Actuators

®	®

ML6161, ML7161 ML6174, ML7174

The 35 and 70 lb-in. Non-Spring Return Direct Coupled Actuators (DCA) are control motors that provide floating or proportioning control for valves and dampers. The proportioning motors accept a current or voltage signal from a controller to position the damper or valve at any chosen point between fully open and fully closed.

SPECIFICATIONS

Electrical Ratings:

Power Input: 24 Vac ±20%, 50/60 Hz.

Model		Power Consumption
θ	ML6161A,B,C,D	1.8 VA
θ	ML7161A	4.8 VA
θ	ML6174A,B	2.4 VA
θ	ML7174A	5.4 VA

Auxiliary Switch Ratings:

θElectrical selective NO or NC, not simultaneous.

θPilot Duty: 50 VA, 24 Vac.

θSwitch Differential: Three angular degree maximum.

Torque Ratings (at Rated Voltages):
		35 lb-in. DCA	70 lb-in. DCA
		lb-in. (Nm)
θ	Running	35 (4)	70 (8)
θ	Breakaway	35 (4)	70 (8)
θ	Stall Minimum	45 (5)	70 (8)
θ	Stall Maximum	70 (8)	130 (14)

Actuator Stroke:

θSelectable: 45°, 60°, and 90°.

θRotation: Clockwise (CW) and counter clockwise (CCW).

Device Weight:

θ 1.3 lb (0.58 kg).

Environmental Protection Ratings:

θNEMA1.

θIP54 (ML6161E, ML7161E, ML6174E, ML7174E only).

SPECIFICATION DATA

FEATURES

•45°, 60°, and 90° selectable stroke in either clockwise

(cw) or counterclockwise (ccw) directions.

•Magnetic coupling eliminates the need for mechanical stops.

•Two field-addable auxiliary switches.

•Auxiliary feedback potentiometer field-addable on select models.

•0° to 30° minimum position adjustment (cw or ccw direction) on all models.

•Manual declutch on select models.

•W7620 Terminal Unit Controller compatibility.

•Commercial Zone Damper in W7600 Commercial Zone System compatibility.

Actuator Timing for 90° Stroke:

		At 50 Hz	At 60 Hz
θ	90 Second Models	108 sec	90 sec
θ	Three-Minute Models	216 sec	180 sec
θ	Seven-Minute Models	504 sec	420 sec

Mounting:

θMounts directly on 3/8 in. to 1/2 in. (10 to 13 mm) round or square shaft.

θMinimum Shaft Length Required: 1-3/4 in. (45 mm).

θActuator can be mounted with shaft in any position.

θSecured Using: Two 1/4 in. (6 mm) 28 NF Allen screws.

Actuator Minimum Design Life:
		35 lb-in. DCA	70 lb-in. DCA
θ	Cycles	50,000	40,000
θ	Repositions	1,500,000	1,500,000

Temperature Ratings:

θAmbient: 20°to 125°F (-18° to 50°C).

θDerated Timing to: -20°F (-29°C).

θShipping and Storage: -20° to 130°F (-29° to 54°C).

Humidity Ratings:

θ 5% to 95% RH noncondensing.

Noise Output:

θ 45 dBA at 1 meter maximum.

® U.S. Registered Trademark	63-1146-1
Copyright © 1998 Honeywell Inc., Mpls. MN • All Rights Reserved

1

(25)

4-1/4

(108)

35 AND 70 LB-IN NON-SPRING RETURN DIRECT COUPLED ACTUATORS

Models:

ML Motor Linkage

θ61 Floating Control

θ71 4-20 mA/2-10 Vdc Control

θ61 35 lb-in. (4 Nm), Non-Spring Return

θ714 70 lb-in. (8 Nm), Non-Spring Return

θ A

Includes output for feedback

potentiometer.

θ B

Standard (includes minimum

position setscrews)

θ C

Includes output for feedback

potentiometer and cover w/

θ D

conduit connections.

Includes cover w/ conduit

connections.

θ E

Standard with European

ratings.

θ 1

Standard

θ 2

Includes declutch

function

ML

XXX

Varies by Model

Dimensions:

CW

4-7/8

(123)

COM

CCW

11/16

(18)

3-3/8 (86)

M14227

TYPICAL SPECIFICATION

Non-spring return actuator shall be direct coupled type that requires neither crankarm nor linkage and be capable of direct mounting to a 3/8 inch or 1/2 inch diameter jackshaft. The actuator shall connect to the shaft using set screws. The actuator must provide floating or proportional control.

The actuator design must be for use in either clockwise or counterclockwise operation.

Actuators shall use a true synchronous ac stepper motor to drive the output hub. Run time shall be constant and independent of load, temperature and supply voltage (within product-family specifications). Overload protection shall be provided at all angles of rotation by a magnetic clutch mechanism that provides an absolute limit to the output torque without a physical link between the motor and the gear train.

Actuators shall have a minimum performance of 40,000 full-stroke powered cycles, and 1,500,000 repositions documented in the product data literature. Actuators shall be UL and CSA listed, manufactured under ISO 9001 International Quality Control Standards.

Feedback Potentiometer Ratings:

θElectrical Rating (200976A,C Potentiometer): 24 Vac, 50/60 Hz, 2.25W.

θResistance Output (Resistance Linear as Measured Between Terminals R-B):

θ0 ohms (at 0°, cw stroke).

θ250 ohms (at 45°, cw stroke).

θ333 ohms (at 60°, cw stroke).

θ500 ohms (at 90°, cw stroke).

Approvals:

θUnderwriter’s Laboratories Inc. Component Recognized:

File No. E4436; Guide No. XAPX2.

θMeets UL94-5V plenum requirements.

θCanadian Standards Association Certified (includes auxiliary switch).

Accessories:

θ200976A Auxiliary Potentiometer (0 to 500 ohm).

θ200976C Auxiliary Potentiometer (0 to 2000 ohm).

θ201052A Auxiliary Switch (one).

θ201052B Auxiliary Switch (two).

θ4074ENJ Bag Assembly—includes stop pin, shaft adapter, and two minimum position screws.

θ4074ENY Bag Assembly—includes stop pin and shaft adapter.

θ4074EVK Short Shaft Extender.

θ7640QW Metal Enclosure—for attaching conduit to actuator.

θT641 Floating Thermostat—for use with seven-minute models.

θT6984 Floating Thermostat—for use with 90-second and seven-minute models.

θT7984 Modulating Thermostat—for use with ML7174.

By using this Honeywell literature, you agree that Honeywell will have no liability for any damages arising out of your use or modification to, the literature. You will defend and indemnify Honeywell, its affiliates and subsidiaries, from and against any liability, cost, or damages, including attorneys’ fees, arising out of, or resulting from, any modification to the literature by you.

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