Submittal Sheet

ManualsBrandsBarber Colman ManualsActuator AccessoriesProportional, SR, 24V, 30 lb-in, 2-10Vdc, CCW Plenum Cable

All brand names, trademarks and registered

trademarks are the property of their respective

owners. Information contained within this

document is subject to change without notice.

F-27170-6

Schneider Electric

1354 Clifford Avenue

P.O. Box 2940

Loves Park, IL 61132-2940

On October 1st, 2009, TAC became the Buildings business of its parent company Schneider Electric. This document reflects the visual identity of Schneider Electric,

however there remains references to TAC as a corporate brand in the body copy. As each document is updated, the body copy will be changed to reflect appropriate

cor

orate brand chan

es.

www.schneider-electric.com/buildings

THEORY OF OPERATION

The MA series actuators provide two position spring return operation. They are equipped

with a mechanical spring return mechanism. When power is applied, the actuator moves to

its powered position, at the same time tensing the spring return safety mechanism. When

power is removed, the spring returns the actuator to its normal position (retracted). The

spring return system provides consistent close-off for sensitive damper or valve

applications.

MA series two position actuators use a brush DC motor controlled by on-board electronics.

When the actuator encounters a stall or end of travel position, the motor current is

automatically reduced, preventing damage to the actuator or motor.

MF or MS series floating or proportional actuators use a brush DC motor which is controlled

by a microprocessor. The microprocessor supplies the intelligence to provide a constant

speed and to know the actuators exact position. The microprocessor monitors and controls

the DC motors rotation and provides a digital rotation sensing function to prevent damage to

the actuator in a stall condition.

All actuators may be stalled anywhere in their normal rotation without the need of

mechanical end switches.

MAINTENANCE

Regular maintenance of the total system is recommended to assure sustained optimum

performance. The Linear series actuators are maintenance free.

FIELD REPAIR

None. Replace with a functional actuator.

DIMENSIONAL DATA

3-1/2 (89 mm)

6-3/4 (172 mm)

3-1/2 (89 mm)

1-1/8 ( 29 mm)

Note: -1XX models only

Figure-17 Mx4D-xxxx-xxx Spring Return Valve Actuator Dimensions.