Danfoss VLT FC 360, Руководство по конструкции, Страница: 3 / 82

Contents
1 Introduction
5
1.1 How to Read This Design Guide
5
1.1.1 Symbols 5
1.1.2 Abbreviations 5
1.2 Definitions
6
1.2.1 Frequency Converter 6
1.2.2 Input 6
1.2.3 Motor 6
1.2.4 References 6
1.2.5 Miscellaneous 7
1.3 Safety Precautions 8
1.4 Software Version 9
1.5 CE Labelling 10
1.6 Air Humidity 11
2 Product Overview
12
2.1 Enclosure Type Overview 12
2.2 Electrical Installation 13
2.3 Control Structures 14
2.3.1 Control Principle 14
2.3.2 FC 360 Controls 14
2.3.3 Control Structure in VVC
plus
15
2.3.4 Internal Current Control in VVC plus Mode 16
2.3.5 Local (Hand On) and Remote (Auto On) Control 16
2.4 Reference Handling 17
2.4.1 Reference Limits 18
2.4.2 Scaling of Preset References and Bus References 19
2.4.3 Scaling of Analog and Pulse References and Feedback 19
2.4.4 Dead Band Around Zero 21
2.5 PID Control
24
2.5.1 Speed PID Control 24
2.5.2 Process PID Control 27
2.5.3 Process Control Relevant Parameters 28
2.5.4 Example of Process PID Control 29
2.5.5 Optimisation of the Process Regulator 31
2.5.6 Ziegler Nichols Tuning Method 31
2.6 General Aspects of EMC 32
2.6.1 General Aspects of EMC Emissions 32
2.6.2 EMC Test Results 33
Contents
VLT
®
AutomationDrive FC 360 Design Guide
MG06B202 - VLT
®
is a registered Danfoss trademark 1