Honeywell ML6161B - 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

Summary

FEATURES

SPECIFICATIONS

Electrical, Torque, and Timing

Covers electrical ratings, torque, power consumption, and stroke timing.

INSTALLATION

Preparation and Mounting Basics

Covers shaft sizing, rotation determination, and initial mounting.

Minimum Position Setscrew

Setscrew Adjustment Procedure

Explains how to adjust the minimum position using a setscrew.

Wiring

Wiring to Conduit Cover Actuators

Guides on connecting wires to actuators with conduit covers.

Auxiliary Switches and Potentiometers

OPERATION

VAV Systems Operation

Explains how VAV systems control temperature and airflow using actuators.

Rotation Reversal Switch

Parallel Actuator Wiring

Guides on wiring multiple actuators in parallel for voltage or current control.

CHECKOUT

ML6161, ML6174 Checkout

Procedures for checking operation with electronic control systems.

ML7161, ML7174 Checkout

Honeywell ML6161B Specifications

General

Voltage	24 VAC
Fail Safe Mode	Spring Return
Number of Outputs	1
Housing Material	Plastic
Control Signal	4-20 mA
Mounting	Direct
Input Voltage	24 VAC