Danfoss VLT HVAC Design Guide

Contents
1 How to Read this Design Guide
3
Copyright, limitation of liability and revision rights 3
Approvals 4
Symbols 4
Abbreviations 5
Definitions 5
2 Introduction to VLT HVAC Drive 11
Safety 11
CE labelling 13
Aggressive Environments 14
Vibration and shock 15
Safe Stop 15
Control Structures 32
General aspects of EMC 39
Galvanic isolation (PELV) 43
PELV - Protective Extra Low Voltage 43
Earth Leakage Current 44
Brake Function 45
Extreme Running Conditions 47
3 VLT HVAC Drive Selection 51
Options and Accessories 51
Frame Size F Panel Options 59
4 How to Order 65
Ordering Numbers 69
5 How to Install 79
Mechanical dimensions 81
Lifting 86
Electrical Installation 88
Electrical installation and control cables 89
Final Set-Up and Test 105
Additional Connections 107
Installation of misc. connections 111
Safety 113
EMC-correct Installation 114
Residual Current Device 117
6 Application Examples 119
VLT
®
HVAC Drive Design Guide Contents
MG.11.B9.02 - VLT
®
is a registered Danfoss trademark 1

Danfoss VLT HVAC Specifications

General

Enclosure Rating	IP20, IP21, IP54, IP55, IP66
Storage Temperature Range	-25°C to +70°C
Output Voltage Range	0-100% of supply voltage
Communication Protocols	Modbus RTU, BACnet, Ethernet/IP, Profibus DP
Ambient Temperature Range	-10°C to +50°C (without derating)
Relative Humidity	5% to 95% non-condensing
Altitude	Up to 1000 m without derating
Cooling Method	Air cooled
Application	HVAC systems, Pumps, Fans, Compressors
Voltage Range	200-240 V, 380-500 V, 525-600 V
Frequency Range	0 Hz to 590 Hz