Contents
1 Introduction
4
1.1 How to Read this Design Guide
4
1.2 Conformity
4
1.3 Safety Precautions
4
1.4 Disposal
4
2 Product Overview
5
2.1 Description of the Brake System
5
2.2 Horizontal or Vertical Load
5
2.3 Aluminium-housed Brake Resistors
6
2.3.1 Aluminium-housed Flat-pack Brake Resistors 6
2.3.2 Aluminium-housed Compact Brake Resistor 6
2.4 Steel Grid Brake Resistors
6
3 Installation
7
3.1 Mechanical Installation
7
3.1.1 Aluminium-housed Compact Brake Resistors and Flat-pack Brake Resistors 7
3.1.2 Steel Grid Brake Resistors 10
3.1.3 Accessories 11
3.2 Electrical Installation
12
3.2.1 EMC Precautions 12
3.2.2 Cable Connection 12
3.2.3 Brake Cable 13
3.3 Protective Functions
13
3.3.1 Overtemperature Protection 13
3.3.2 Brake Resistor and Brake IGBT 14
4 System Integration
15
4.1 Brake Resistor Calculation
15
4.1.1 Brake Set-up 15
4.1.2 Calculation of Brake Resistor Resistance 15
4.1.3 Calculation of Braking Power 16
4.1.4 Calculation of the Brake Resistor Peak Power 17
4.1.5 Calculation of the Brake Resistor Average Power 17
4.1.6 Braking of Inertia 17
5 Programming
18
5.1 Parameters for VLT
®
Micro Drive FC 51
18
5.2 Parameters for VLT
®
HVAC Drive FC 102 and VLT
®
AQUA Drive FC 202
18
Contents Design Guide
MG90O202 Danfoss A/S © Rev. 05/2014 All rights reserved. 1
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