Siemens A1 7.2.2System Specifications

International English

Real Applications

7.2.2System Specifications

Motor	4 pole 11 kW 420 V 3-phase induction motor
Control	Closed loop PI system
System
Sensor	4 –20 mA flow rate sensor
Drive	MICROMASTER 11 kW 400 V

11kW fan and motor		Fume burner system

Flow sensor 4 - 20mA

Heaters

Factory	11kW
	MIDIMASTER

Figure 7-2 Extractor System using Closed Loop Flow Control

MICROMASTER Applications Handbook

Contents

Applications Handbook Issue A1 User Documentation Page Issue: A1 Introduction Siemens Drives Product Range Selecting a Drive Page Table of Contents Page List of Figures List of Tables 1 Introduction 1.1What is a Variable Speed Drive Page 1.2The Variable Frequency Inverter Page Page Page 2 Siemens Drives Product Range Page 3 Selecting a Drive 3.1Overall Considerations 3.2Supply Side Requirements 3.2.1Supply Tolerance 3.2.2Supply Disturbance 3.2.3Ungrounded Supplies 3.2.4Low Frequency Harmonics 3.3Motor limitations 3.4Load Considerations 3.4.1Variable Torque Applications 3.4.2Other Loads 3.5Acceleration and Braking requirements 3.6Environmental Considerations 4 Getting Started with an Inverter 4.1Mounting the Inverter 4.2Cooling 4.3Wiring up the Inverter Page 4.3.1A Typical Installation 4.4First Switch On 5 Applications and Possibilities 5.1Using a Potentiometer with the Analog Input 5.2Using all the Digital Inputs 5.3Selecting and Using the Fixed Frequencies 5.3.1More Complex Uses of Fixed frequencies 5.4Using other digital input features 5.5Using the control outputs 5.5.1Analog Output (MICROMASTER MM440 only) 5.5.2Relays 5.6Current Limit and Protection Systems 5.7Other Protection Features 5.7.1I2t Protection 5.7.2PTC Resistor Protection 5.7.3Overvoltage 5.8Some Additional Features 5.8.1Display Mode 5.8.2Ramp Smoothing 5.8.3Display Scaling 5.8.4Skip Frequencies etc 5.8.5Start on the Fly 5.8.6Electro-MechanicalBrake Control 5.8.7Slip Compensation 5.8.8Pulse Frequency selection 5.8.9Boost. P1310, 11 and 5.8.10Serial Interface 6 Electromagnetic Compatibility (EMC) 6.1What is EMC 6.2Minimising the problem of EMI 6.2.1Immunity and Immunity testing 6.2.2EMC Guidelines Page 6.3EMC Rules and Regulations 6.3.1European Regulations Page 7 Real Applications 7.1A Simple Fan Application 7.1.1Advantages 7.1.2System Specifications 7.1.3Key Parameter Details 7.2A Closed Loop Controller using a Fan 7.2.1Advantages 7.2.2System Specifications 7.2.3Key Parameter Details 7.3Controlling Lift Door Operation 7.3.1Advantages 7.3.2System Specification 7.3.3Key Parameter Details 7.4A Conveyor Application using several MICROMASTERs 7.4.1Advantages 7.4.2System Specifications 7.4.3Application Details 7.4.4Key Parameter Settings 7.5A Material Handling Application 7.5.1Advantages 7.5.2System Specifications 7.5.3Application Details 7.5.4Key Parameter settings 7.6An Exercise Machine Application 7.6.1Advantages 7.6.2System Specifications 7.6.3Application Details 7.6.4Key Parameter Settings 8 Advanced Applications Information 8.1Using Closed Loop Control 8.1.1What is Closed Loop Control 8.1.2Closed Loop Control using MICROMASTER MM420 8.1.3Setting up a feedback control system 8.2Braking and Slowing down using Inverters 8.2.1What happens when a motor is stopped 8.2.2Braking and Stopping with an Inverter 8.3Using the Serial Interface 8.4Using PROFIBUS 8.4.1What is PROFIBUS 8.4.2Using PROFIBUS with Siemens Standard Drives 8.5Vector and FCC Control 8.5.1What is a Vector Drive 8.5.2What is Flux Current Control must Page Page 9 Options for Siemens Standard Drives 9.1Introduction 9.2Advanced Operating Panel AOP 9.3Braking Modules and Braking Resistors 9.4EMC Filters 9.5PROFIBUS Module 9.6Input and Output Chokes A Environmental Protection Levels (IP rating) Page B Some Useful Formulae B.1 Torque and Power Relationships Output Power Output Torque Conveyor Applications Hoist Applications Index Page Suggestions and/or Corrections Suggestions Corrections From