Contents1 Quick Guide 21.1 Safety 21.1.1 Warnings 21.1.2 Safety Instructions 21.2 Introduction 31.2.1 Available Literature 31.2.2 IT Mains 31.2.3 Avoid Unintended Start 31.2.4 Disposal Instruction 31.3 Installation 31.3.1 Before Starting Repair Work 31.3.2 Side-by-Side Installation 41.3.3 Mechanical Dimensions 51.3.4 Electrical Installation in General 61.3.5 Connecting to Mains and Motor 61.3.6 Fuses 81.3.7 EMC-Correct Electrical Installation 81.3.8 Location of Control Terminals 101.3.9 Electrical Overview 111.4 Programming 121.4.1 Programming with the Local Control Panel (LCP) 121.4.3 The Start-up Wizard for Open Loop Applications 131.5 Cascade Controller 211.5.1 System Status and Operation 221.5.2 Start/Stop Conditions 221.5.3 Cascade Control Wizard 231.5.4 Cascade Control Connection 241.6.1 Main Menu Structure 251.7 Warnings and Alarms 271.8.1 Mains Supply 3x380-480 V AC 291.8.2 EMC Test Results 311.9 Special Conditions 341.9.1 Derating for Ambient Temperature and Switching Frequency 341.9.2 Derating for Low Air Pressure 34Contents VLT® HVAC Basic Drive Cascade Controller Quick GuideMG18F402 - VLT® is a registered Danfoss trademark 1