The Drum Motor - The All-Rounder in Modern Unit Handling Conveyor Technology

Foreword

1Structure of conventional conveyors

1.1 Structure of conventional conveyor belts

1.2 Conveyor belts with head drive

1.3 Conveyor belts with centre drive

1.3.1 Knife edges

1.4 Conveyor belts with tail drive

1.5 Roller conveyors

2Types of conveyor belts

2.1 Conventional friction-driven flat belts

2.2 Modular positive drive belts

2.3 Hygienic, positive drive thermoplastic belts

3Common conveyor drives

3.1 Drive pulley with shaft-mounted geared motor

3.2 Drum motors

3.3 Asynchronous drum motor technology

3.4 Synchronous drum motor technology

4Variable frequency drives and encoder systems

4.1 Variable frequency drives

4.1.1 V/f controlled variable frequency drive

4.1.2 Sensorless control variable frequency drives

4.2 Encoder systems

4.2.1 Incremental encoders

4.2.2 Resolvers

4.3 Servo controller with encoder feedback

5Drive dimensioning with drum motors

5.1 Environmental conditions

5.2 It all comes down to friction (general conveyor dimensioning)

5.2.1 Special characteristics of ascending and descending conveyors

5.3 Additional frictional forces

5.4 Belt tension

5.5 Drum motors with rubber lagging or profilesfor positively driven belts

Appendix