Danfoss VLT AutomationDrive FC 301, Design Manual, Page: 5 / 200

4.2.9 Motor Preheat 40
4.2.10 4 Programmable Set-ups 40
4.2.11 Dynamic Braking 40
4.2.12 Open Loop Mechanical Brake Control 40
4.2.13 Closed Loop Mechancial Brake Control/Hoist Mechanical Brake 41
4.2.14 Smart Logic Control (SLC) 43
4.2.15 Safe Torque Off 43
4.3 Danfoss VLT
®
FlexConcept
®
44
5 System Integration
45
5.1 Ambient Operating Conditions
45
5.1.1 Humidity 45
5.1.2 Temperature 45
5.1.3 Temperature and Cooling 45
5.1.4 Manual Derating 45
5.1.4.1 Derating for Running at Low Speed 46
5.1.4.2 Derating for Low Air Pressure 46
5.1.5 Acoustic Noise 47
5.1.6 Vibration and Shock 47
5.1.7 Aggressive Atmospheres 47
5.1.7.1 Gases 47
5.1.7.2 Dust Exposure 47
5.1.7.3 Potentially Explosive Atmospheres 48
5.1.8 Maintenance 48
5.1.9 Storage 48
5.2 General Aspects of EMC 49
5.2.1 EMC Test Results 50
5.2.2 Emission Requirements 51
5.2.3 Immunity Requirements 51
5.2.4 Motor Insulation 52
5.2.5 Motor Bearing Currents 52
5.3 Mains Supply Interference/Harmonics
53
5.3.1 The Effect of Harmonics in a Power Distribution System 53
5.3.2 Harmonic Limitation Standards and Requirements 54
5.3.3 Harmonic Mitigation 54
5.3.4 Harmonic Calculation 54
5.4 Galvanic Isolation (PELV) 54
5.4.1 PELV - Protective Extra Low Voltage 54
5.5 Brake Functions 55
5.5.1 Selection of Brake Resistor 55
Contents
VLT
®
AutomationDrive FC 301/FC 302 Design Guide, 0.25-75 kW
MG33BF02 - Rev. 2013-12-20 3