Honeywell ML6194, Product Data

PRODUCT DATA

® U.S. Registered Trademark
© 2004 Honeywell International Inc.
 All Rights Reserved 

63-2511—1

ML6194, ML6294

Non-Spring Return

Direct Coupled Actuators

APPLICATION

The ML6194 and ML6294 Non-Spring Return Direct Coupled 

Actuators (DCA) provide floating single-pole, double-throw 

(spdt) control of dampers or valves in heating, ventilating, and 

air conditioning (HVAC) applications. The ML6294 has an  

internal, electrically isolated feedback potentiometer that can 

be used to provide indication of motor output hub position or 

slave a Series 90 actuator.

FEATURES

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

or square shaft. Mount on 1 in. (26 mm) round shafts 

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 dampers.

• Declutch feature allows manual adjustment.
• 165 second synchronous timing can eliminate need for 

feedback position indication in closed-loop 

temperature control applications.

• Both single-point and three-point mounting 

compatibility to allow installation flexibility.

• Models available with or without time-out feature.

Contents

Application ........................................................................

1

Features ...........................................................................

1

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

2

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

2

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

4

Wiring ...............................................................................

6

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

7

Checkout ..........................................................................

8

Troubleshooting ................................................................

8