TAC MS51-7103 User Guide

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Application

TAC DuraDrive Linear Actuators are designed to mount directly onto two-way or three-way globe valves without the use of linkages. They provide linear travel to operate valves from 1/2" to 2" VB-7xxx and discontinued 1/2" to 1-1/4" VB-9xxx in chilled water, hot water and steam applications up to 366 °F (186 °C). Linear spring return actuators provide either two position, floating or proportional modulation control (depending on model selection) of valves in HVAC systems.

MA51-710x Two Position Series

MF51-71 03 Floati ng Series

MS51-7103 Proportional Series

TAC DuraDrive™ Linear Series

Spring Retur n Actu ato r

General Instructions

Features

• Two position models controlled by SPST controller

• Floating models controlled by SPDT floating

controllers

• Proportional models controlled by 0-3 Vdc, 6-9 Vdc,

0-10 Vdc, 0-20 mAdc, 2-10 Vdc, or 4-20 mAdc. Control function direct/reverse action is jumper selectable

• 105 lb force (467 newton) with 1/2" (13 mm) nominal

linear stroke

• 24 Vac, 120 Vac, and 230 Vac models

• Rugged polymer housings rated for up to

NEMA 2/IP54

• Overload protection throughout stroke

• Automatically sets input span to match valve travel

• Compact size to allow installation in limited space

• Manual override to allow positioning of valve and

preload

• Spring return operation

Mx51-710x

• Direct mount to valves without separate linkage

• Polymer housing rated for plenum use

• Five year warranty

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Applicable Literature

F-Number Description Audience Purpose

– Application Engineers

F-26080 EN-205 Water System Guidelines

F-27252

F-26895

F-27175

F-27382 TAC Electric/Electronic Product s Catalog

Vx-7xxx-8xx Series Vx-7xxx-59x Series Vx-9xxx-8xx Series Vx-9xxx-59x Series Selection Guide

AM-703 Input Scaling Module, AM-704 Pulse Width Modulation Interface, AM-705 Positioner, AM-706 Positioner, AM-708 Resistor

AM-756 Metric Conduit Adapter, AM-763 Hexcrank, AM770 Replacement Valve Linkage Par ts Kit

–Installers – Service Personnel – Start-up Te chnician s

– Sales Personnel – Application Engineers –Installers – Service Personnel – Start-up Te chnician s

–Installers – Service Personnel – Start-up Te chnician s

– Sales Personnel – Application Engineers

Descri bes TAC approved water tr ea tm en t practices.

Provides Mxx1-720x and Mx51-710x actuator, valve, and valve assembly select ion data includin g specifications, close-off pressur es, and dimensional information.

Provides step-by-step mounting instructions

Comprehensive catalog containing TAC’s electric/electronic actuators, thermostats, controllers, sensors, tr ansmitte rs, and accessories

SPECIFICATIONS

Actuator In puts

Control Signal: See Table-1 for actuator models and control type. Power Input: See Table-1. All 24 Vac circuits are Class 2. All circ uit s 30 VAC and above

are Class 1. Connections: 3 ft (91 cm) appliance wire or plenum cables, enclosure accepts 1/2” (13 mm) conduit connectors. For M20 Metric connector, use AM-756 adaptor.

Actuator Outputs

Electrical:

Position Feedback Vol tage (proportional or floating only),

For voltage r anges, the feedback signal is the same r ange as the input signal. The 420 mAdc current range and floating actuators have a 2-10 Vdc position feedback signal. The pos it ion feedback signal can supply up to 0.5 mAdc to operate up to four additional slave actuators.

Mechanical:

Linear Stroke, 1/2” (13 mm) nominal. Approx. Stroke Timing, See Table-1. Manual Override, Allows positioning of valve and preload using manual crank. Right/Left Jumper, Permits reverse acting/direct acti ng li near motion (MS51 only).

Environment:

Ambient Temperature Limi ts, Shipping & Storage, -4 0 to 16 0 ° F ( - 40 to 71 °C ). Operating, -22 to 140 °F (-30 to 60 °C). Temperature Restrictions, For maximum ambient 140

°F (60 °C) the maximum allowable flui d temperature should not exceed valve rating. See F-2 7252 Selection Guide for specific ratings.

Humidity: 5 to 95% RH, non-condensing. Location:

NEMA 1. NEMA 2 (enclosure is air plenum rated), UL Type 2 (IEC IP54) with customer supplied water tight conduit connectors.

Agency Listings

UL 873: Underwriters Laboratories (File #E9429 Category Temperature-Indicating and

Regulating Equipment). CUL: UL Listed for use in Canada by Underwriters Laborat ories. Canadian Standards C22.2 No. 24-93.

European Community: EMC Directi ve (89/336/EEC). Low Voltage Dire ctive (72/23/ EEC). Australia: This produc t meets requi rements to bear the C-Ti ck Mark accor ding to th e terms

specified by the Com mu nications Authority under the Radio Communications Act 1992.

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Note:

All performance specifications are nominal and conform to acceptable industry standards. For applications at condit ions beyond these specif ications, consult TAC. TAC shall not be liable for damages resulting from misapplication or misuse of its products.

Table-1 Specifications.

Actuator Power Input Approximate Stroke

Running Holding 50/60 Hz

VA W W

Amps

50/60 Hz

b b b b b b b d b d b b b b

Control

Signal

Two

Position

SPST

Floating

2-10 Vdc

Proportional

0-3 Vdc

Proportional

6-9 Vdc

Proportional

0-10 Vdc

Proportional

4-20 mAdc

Voltage Wiring System

24Vac ±2 0%

20-30 Vdc

120 Vac ±10%

50/60 Hz

230 Vac ±10%

50/60 Hz

24Vac ±2 0%

20-30 Vdc

Appliance Wire 5.3 4.1 0.15 1.2

Appliance Wire 7.9 6.2 n/a 2.1

Appliance Wire 7.4 5.4 n/a 2.1 Appliance Wire 6.9 4.7 0.16 2.1