Danfoss vlt fcd 302, Design Manual, Page: 4 / 93

3.4.4.1 EMC-correct Cables 40
3.4.4.2 Earthing of Screened Control Cables 42
3.4.4.3 RFI Switch 42
3.4.5 Mains Supply Interference/Harmonics 43
3.4.5.1 Mains Supply Interference/Harmonics 43
3.4.5.2 Effect of Harmonics in a Power Distribution System 43
3.4.5.3 Harmonic Limitation Standards and Requirements 44
3.4.5.4 Harmonic Mitigation 44
3.4.5.5 Harmonic Calculation 44
3.4.6 Final Test and Setup 44
3.4.6.1 High Voltage Test 44
3.4.6.2 Earthing 44
3.4.6.3 Safety Earth Connection 45
3.4.6.4 Final Setup Check 45
3.5 Ambient Conditions
45
3.5.1 Air Humidity 45
3.5.2 Aggressive Environments 46
3.5.3 Vibration and Shock 46
3.5.4 Acoustic Noise 46
4 Application Examples
47
4.1 Encoder Connection
51
4.2 Encoder Direction 52
4.3 Closed Loop Drive System 52
4.4 PID Control 52
4.4.1 Speed PID Control 53
4.4.2 The Following Parameters are relevant for the Speed Control 53
4.4.3 Tuning PID Speed Control 55
4.4.4 Process PID Control 55
4.4.6 Example of Process PID Control 57
4.4.8 Ziegler Nichols Tuning Method 60
4.4.9 Example of Process PID Control 61
4.5 Control Structures 62
4.5.1 Control Structure in VVC
plus
Advanced Vector Control 62
4.5.2 Control Structure in Flux Sensorless 62
4.5.3 Control Structure in Flux with Motor Feedback 63
4.6 Local (Hand On) and Remote (Auto) Control
64
4.7 Programming of Torque Limit and Stop
65
4.8 Mechanical Brake
66
4.9 Safe Stop
67
4.9.1.1 Terminal 37 Safe Stop Function 68
Contents
VLT
®
Decentral Drive FCD 302
MG04H102 - VLT
®
is a registered Danfoss trademark 3