Honeywell ML7161A - User Manual

PRODUCT DATA
® U.S. Registered Trademark
Copyright © 2003 Honeywell International Inc.
All Rights Reserved
Þ
63-2209-8
35 and 70 lb-in.
Non-Spring Return
Direct Coupled Actuators
ML6161, ML7161, ML6174, ML7174
APPLICATION
The 35 and 70 lb-in. Non-Spring Return Direct Coupled
Actuators (DCA) are control actuators that provide floating or
proportioning control for valves and dampers. The
proportioning actuators 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. Floating actuators
are suitable for use with single pole double throw (spdt)
floating thermostats or two-position control systems.
Two-position control requires installation of the 201052B
Auxiliary Switch.
FEATURES
• Selectable 45°, 60°, or 90° stroke in both clockwise
(cw) or counterclockwise (ccw) directions.
• 0° to 30° minimum position adjustment (cw or ccw
direction) on all models.
• Magnetic coupling eliminates the need for mechanical
stops.
• Two field-addable auxiliary switches.
• Auxiliary feedback potentiometer field-addable on
select models.
• Manual declutch on all models.
• ML7161 and ML7174 models include standard reverse/
direct acting rotation switch on outside cover.
• W7620 Terminal Unit Controller compatibility.
• Commercial zone damper in W7600 Commercial Zone
System compatibility.
Contents
Application ........................................................................ 1
Features ........................................................................... 1
Specifications ................................................................... 2
Ordering Information ........................................................ 2
Installation ........................................................................ 5
Operation .......................................................................... 10
Checkout .......................................................................... 12

Honeywell ML7161A Specifications

General

Brand	Honeywell
Model	ML7161A
Category	Controller
Language	English

Summary

APPLICATION

APPLICATION

Control actuators for valves and dampers, providing floating or proportioning control.

FEATURES

FEATURES

Selectable stroke, minimum position adjustment, magnetic coupling, auxiliary switches.

SPECIFICATIONS

SPECIFICATIONS

Electrical ratings, torque, stroke, dimensions, temperature, noise, approvals, and accessories.

ORDERING INFORMATION

ORDERING INFORMATION

Contact details for purchasing, information, and support from Honeywell.

INSTALLATION

Installation Preparation

Covers safety, location, mounting, shaft adapter, and determining rotation.

Range Stop and Declutch

Details on setting the range stop pin and using the manual declutch lever for stroke adjustment.

Minimum Position Setscrew Adjustment

How to adjust the minimum position using the setscrew for precise control.

WIRING AND ACCESSORIES

Wiring Safety and Connections

Safety precautions, connecting to conduit covers, and typical wiring diagrams.

Auxiliary Switches and Potentiometers

Installation, function, and calibration of auxiliary switches and potentiometers.

OPERATION

VAV Systems Operation

Explains how VAV systems control air volume using these actuators.

Rotation Reversal and Parallel Wiring

Covers rotation reversal switch and wiring multiple actuators in parallel.

CHECKOUT

CHECKOUT Procedure (ML6161;ML6174)

Steps to verify operation for ML6161 and ML6174 models.

CHECKOUT Procedure (ML7161;ML7174)

Steps to verify operation for ML7161 and ML7174 models, including impedance checks.