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Bulletin 150

Smart Motor Controllers — SMC-3™

Visit our website: www.ab.com/catalogs

Overview/Modes of Operation

Bulletin 150 — Smart Motor Controllers — SMC-3™ Smart

Motor Controller

The SMC-3™ is a compact, simple to use, solid-state motor controller designed to

operate 3-phase motors. It features a built-in overload relay and a built-in SCR bypass

contactor on all three phases, allowing a smaller footprint than other soft starters on

the market. This product is designed for many applications, including compressors,

chillers, pumps, conveyors, and crushers. Modes of operation for the controller are as

follows:

y Soft Start

y Current Limit Start

y Kick Start

y Soft Stop

y Coast-to-Rest

The controllers are available in ten sizes: 3, 9, 16, 19, 25, 30, 37, 43, 60, and 85 A.

They offer two voltage ranges: 200…480V AC and 200…600V AC. All voltage ranges

will operate at either 50 or 60 Hz.

y 1…85 A Range

y Built-In Electronic Motor Overload Protection

y Built-In SCR/Run Bypass

Standards Compliance/Approvals

y UL 508

y CSA C22.2 No. 14

y EN/IEC 60947-4-2

y cULus Listed (Open Type) (File No. E96956)

y CE Marked (Open Type) per EMC Directive and Low Voltage Directive

Modes of Operation

Soft Start

This method has the most general application. The motor is raised from an

initial torque value to full voltage. This initial torque can be adjusted to

15%, 25%, 35%, or 65% of locked rotor torque. The motor voltage is

gradually increased during the acceleration ramp time, which can be

adjusted from 2, 5, 10, 15, 20, 25, or 30 s. (3…37 A, 2…15 s only)

Current Limit Start

This starting mode is used when it is necessary to limit the maximum

starting current. It can be adjusted to 150%, 250%, 350%, or 450% of full

load amps. Start times are selectable from 2, 5, 10, 15, 20, 25, or 30 s.

(3…37 A, 2…15 s only)

Selectable Kick Start

A kickstart, or boost, at the beginning of the start mode is intended to

provide a current pulse of 450% of full load current. The kickstart time is

adjustable from 0.5…1.5 seconds. This allows the motor to develop

additional torque during starting for loads which may need a boost to get

initial shaft rotation.

Table of Contents

Cat. No. Explanation ............... 13

Product Selection..................... 14

Typical Wiring Diagrams ........ 16

Specifications............................. 18

Approximate Dimensions ...... 22

Enclosed Options ..................... 24

Accessories (SMC-3 and

SMC-Delta) ................................. 25

1 2 3 4 5 6 ... 23 24

Summary of Contents

Page 1 - Overview/Modes of Operation

Bulletin 150Smart Motor Controllers — SMC-3™ 11Visit our website: www.ab.com/catalogsOverview/Modes of OperationBulletin 150 — Smart Motor Controllers

Page 2 - Modes of Operation/Features

Bulletin 150Smart Motor Controllers — SMC-3™ 20Visit our website: www.ab.com/catalogsSpecifications, ContinuedSide-Mount Auxiliary Contact Specificati

Page 3 - 150 – C 30 F B D – 8L

Bulletin 150Smart Motor Controllers — SMC-3™ 21Visit our website: www.ab.com/catalogsTrip and Starts per Hour CurvesSMC-3 Overload Trip CurvesTrip Cla

Page 4

Bulletin 150Smart Motor Controllers — SMC-3™ 22Visit our website: www.ab.com/catalogsApproximate DimensionsDimensions in millimeters (inches). Dimensi

Page 5 - Product Selection, Continued

Bulletin 150Smart Motor Controllers — SMC-3™ 23Visit our website: www.ab.com/catalogsEnclosed Type ControllersApproximate Dimensions, ContinuedControl

Page 6

Bulletin 150Smart Motor Controllers — SMC-3™ 24Visit our website: www.ab.com/catalogsEnclosed OptionsEnclosed OptionsOption DescriptionCat. No.Modific

Page 7

Bulletin 150Smart Motor Controllers — SMC-3™ 25Visit our website: www.ab.com/catalogsAccessories (SMC-3 and SMC-Delta)Description480V Protective Modul

Page 8

Bulletin 150Smart Motor Controllers - SMC-Delta™26Visit our website: www.ab.com/catalogsOverview/Modes of Operation/Description of FeaturesBulletin 15

Page 9

Bulletin 150Smart Motor Controllers - SMC-Delta™27Visit our website: www.ab.com/catalogsCat. No. IdentificationΧατ. Νο. ΙδεντιφιχατιονaBulletin Number

Page 10 - Specifications, Continued

Bulletin 150Smart Motor Controllers - SMC-Delta™28Visit our website: www.ab.com/catalogsProduct SelectionOpen Type ControllersProduct SelectionRated V

Page 11

Bulletin 150Smart Motor Controllers - SMC-Delta™29Visit our website: www.ab.com/catalogsTwo-Wire ConfigurationIECNEMAThree-Wire ConfigurationIECNEMATy

Page 12 - Approximate Dimensions

Bulletin 150Smart Motor Controllers — SMC-3™ 12Visit our website: www.ab.com/catalogsDescription of FeaturesElectronic Motor Overload ProtectionThe SM

Page 13

Bulletin 150Smart Motor Controllers - SMC-Delta™30Visit our website: www.ab.com/catalogsTypical Wiring Diagrams, ContinuedIsolation Contactor Configur

Page 14 - Enclosed Options

Bulletin 150Smart Motor Controllers - SMC-Delta™31Visit our website: www.ab.com/catalogsSpecificationsElectrical Ratings Cat. Nos. 150-…Cat. No. D3 D9

Page 15

Bulletin 150Smart Motor Controllers - SMC-Delta™32Visit our website: www.ab.com/catalogsSpecifications, ContinuedControl CircuitUL/cUL IECRated operat

Page 16

Bulletin 150Smart Motor Controllers - SMC-Delta™33Visit our website: www.ab.com/catalogsTrip and Starts per Hour CurvesTrip Class 15 Trip Class 20Star

Page 17 - 150 – D 32 N B D

Bulletin 150Smart Motor Controllers - SMC-Delta™34Visit our website: www.ab.com/catalogsApproximate DimensionsΑππροξιµατε ∆ιµενσιονσMinimum Enclosure

Page 18 - Product Selection

Bulletin 150Smart Motor Controllers — SMC-3™ 13Visit our website: www.ab.com/catalogsCat. No. ExplanationOpen and Non-CombinationaBulletin NumberCode

Page 19 - Typical Wiring Diagrams

Bulletin 150Smart Motor Controllers — SMC-3™ 14Visit our website: www.ab.com/catalogsProduct SelectionOpen Type and Non-Combination Enclosed (IP65, NE

Page 20

Bulletin 150Smart Motor Controllers — SMC-3™ 15Visit our website: www.ab.com/catalogsCombination Enclosed (IP65, NEMA 4/12) Controllers with Fusible D

Page 21 - Specifications

Bulletin 150Smart Motor Controllers — SMC-3™ 16Visit our website: www.ab.com/catalogsIECTwo-Wire ConfigurationNEMAThree-Wire ConfigurationIECNEMATypic

Page 22

Bulletin 150Smart Motor Controllers — SMC-3™ 17Visit our website: www.ab.com/catalogsIsolation Contactor ConfigurationIEC NEMAReversing ConfigurationN

Page 23

Bulletin 150Smart Motor Controllers — SMC-3™ 18Visit our website: www.ab.com/catalogsSpecificationsElectrical Ratings Cat. Nos. 150-…Cat. No. C3 C9 C1

Page 24

Bulletin 150Smart Motor Controllers — SMC-3™ 19Visit our website: www.ab.com/catalogsSpecifications, ContinuedAuxiliary ContactsUL/cUL IECRated operat