Danfoss VLT Design Guide

5.2 Electrical Installation
62
5.2.2 Electrical Installation and Control Cables 63
5.2.5 Removal of Knockouts for Extra Cables 65
5.2.7 Gland/Conduit Entry - IP21 (NEMA 1) and IP54 (NEMA12) 66
5.3 Final Set-Up and Test
71
5.4 Additional Connections
73
5.4.2 External Fan Supply 73
5.5 Installation of Misc. Connections
75
5.6 Safety
77
5.6.1 High Voltage Test 77
5.6.2 Safety Earth Connection 77
5.7 EMC-correct Installation
77
5.7.1 Electrical Installation - EMC Precautions 77
5.7.2 Use of EMC-Correct Cables 79
6 Application Examples
82
6.1.1 Start/Stop 82
6.1.2 Pulse Start/Stop 82
6.1.3 Potentiometer Reference 83
6.1.4 Automatic Motor Adaptation (AMA) 83
6.1.5 Smart Logic Control 83
6.1.6 Smart Logic Control Programming 83
6.1.7 SLC Application Example 84
7 RS-485 Installation and Set-up
86
7.1 RS-485 Installation and Set-up
86
7.1.1 Overview 86
7.1.5 EMC Precautions 87
7.2 FC Protocol Overview
87
7.3 FC Protocol Message Framing Structure
88
7.3.1 Content of a Character (byte) 88
7.3.2 Telegram Structure 88
7.3.3 Telegram Length (LGE) 88
7.3.4 Frequency Converter Address (ADR) 88
7.3.5 Data Control Byte (BCC) 88
7.3.6 The Data Field 89
7.3.7 The PKE Field 89
7.3.9 Index (IND) 90
7.3.10 Parameter Value (PWE) 90
7.3.12 Conversion 91
7.3.13 Process Words (PCD) 91
Contents
VLT
®
Refrigeration Drive Design Guide
2 MG16G102 - VLT
®
is a registered Danfoss trademark

Danfoss VLT Specifications

General

Frequency	50/60 Hz
Enclosure	IP20, IP21, IP55, IP66
Series	VLT
Control Technique	Flux Vector Control
Output Voltage	0-Vinput
Control Method	Fieldbus
Communication Interface	PROFIBUS, CANopen
Protection Features	Overload, Overvoltage, Undervoltage, Short Circuit, Ground Fault
Cooling Method	Liquid Cooled
Storage Temperature	-25°C to +70°C
Relative Humidity	5-95% non-condensing
Altitude	Up to 1000m (3280ft) without derating, up to 4000m (13120ft) with derating
Operating Temperature	-10°C to +50°C (14°F to 122°F)