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Danfoss VLT HVACDrive User Manual

Danfoss VLT HVACDrive
180 pages
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Contents
1 Introduction
1-1
Copyright, Limitation of Liability and Revision Rights 1-2
2 Safety
2-1
High Voltage Warning 2-1
Before Commencing Repair Work 2-3
Special Conditions 2-3
Avoid Unintended Start 2-4
Safe Stop of the Adjustable Frequency Drive 2-5
IT Line Power 2-6
3 Mechanical Installation
3-1
Before Starting 3-1
Mechanical Dimensions 3-3
4 Electrical Installation
4-1
How to Connect 4-1
Power and Control Wiring for Unshielded Cables 4-2
Electrical Installation and Control Cables 4-3
Line Power Wiring Overview 4-9
Motor Wiring Overview 4-17
DC Bus Connection 4-21
Brake Connection Option 4-22
Relay Connection 4-24
How to Test Motor and Direction of Rotation 4-29
5 Commissioning and Application Examples
5-1
Commissioning 5-1
Quick Menu Mode 5-1
Tips and Tricks 5-6
Application Examples 5-8
Start/Stop 5-8
Pulse Start/Stop 5-8
Automatic Motor Adaptation (AMA) 5-9
6 How to Operate the Adjustable Frequency Drive
6-1
How to Operate the Graphical LCP (GLCP) 6-1
How to Operate the Numeric LCP (NLCP) 6-7
VLT
®
HVAC Drive Instruction Manual Contents
MG.11.AB.22 - VLT
®
is a registered Danfoss trademark

Table of Contents

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Danfoss VLT HVACDrive Specifications

General IconGeneral
Output Voltage0 V to Input Voltage
Protection FeaturesOvercurrent, Overvoltage, Undervoltage, Overtemperature, Short Circuit
Communication ProtocolsModbus RTU, BACnet MS/TP, Ethernet/IP, Profibus DP
Enclosure RatingIP20, IP21
Ambient Temperature-10°C to +50°C (without derating)
Relative Humidity5-95% non-condensing
ApprovalsCE, UL, cUL
Brake ChopperBuilt-in (selected models)
EMC ComplianceEN 61800-3
ApplicationHVAC systems

Summary

2 Safety

2.1.1 Symbols

Explains the meaning of symbols used in the manual, such as notes, warnings, and default settings.

2.1.2 High Voltage Warning

Warns about the dangers of high voltage when connected to line power and stresses the importance of correct installation.

2.1.3 Safety Note

Highlights the danger of incorrect installation and emphasizes compliance with safety regulations and manual instructions.

2.1.4 Before Commencing Repair Work

Provides essential steps to follow before starting any repair work on the drive, including power disconnection.

2.1.5 Special Conditions

Discusses electrical ratings and special installation considerations for safety, including fuses and cable selection.

2.1.7 Avoid Unintended Start

Details precautions to prevent unintended motor starts, including disconnecting power and using the OFF key.

2.1.8 Safe Stop of the Adjustable Frequency Drive

Explains the Safe Stop function, its suitability for Safety Category 3, and the need for thorough risk analysis.

3 Mechanical Installation

3.2.4 Mechanical Mounting

Provides instructions and diagrams for mechanical mounting, including side-by-side installation and air passage requirements.

3.2.5 Safety Requirements of Mechanical Installation

Highlights safety requirements for field mounting and installation to avoid injury or equipment damage, especially with large units.

4 Electrical Installation

4.1.2 Power and Control Wiring for Unshielded Cables

Explains wiring practices for unshielded cables, emphasizing separate conduits for noise isolation and avoiding induced voltage.

4.1.4 Fuses

Details branch circuit protection requirements, short-circuit protection, and recommended fuses for installation safety.

4.1.22 Brake Connection Option

Details the brake connection option, including terminal numbers for the brake resistor and safety considerations.

4.1.27 How to Test Motor and Direction of Rotation

Provides a step-by-step guide to test motor connection and rotation direction, emphasizing safety precautions.

4.2 Final Optimization and Test

Guides the user through optimizing motor shaft performance and testing the drive with the connected motor.

5 Commissioning and Application Examples

5.1 Commissioning

Provides an overview of the commissioning process, including quick menu mode, personal menus, and changes made.

5.1.3 How to Connect a PC to the Adjustable Frequency Drive

Explains how to connect a PC for controlling or programming the drive using MCT 10 software via USB or RS-485.

5.1.7 Initialization to Default Settings

Explains two methods for initializing the drive to default settings: recommended and manual initialization.

5.2.3 Automatic Motor Adaptation (AMA)

Explains the AMA algorithm for measuring motor parameters and optimizing performance, including limitations and preconditions.

6 How to Operate the Adjustable Frequency Drive

6.1.2 How to Operate the Graphical LCP (GLCP)

Provides instructions for operating the Graphical Local Control Panel (GLCP), including display lines and key functions.

6.1.3 How to Operate the Numeric LCP (NLCP)

Explains how to operate the Numeric Local Control Panel (NLCP), covering status display, alarm display, and menu keys.

7 How to Program the Adjustable Frequency Drive

7.1.3 Changing Data

Details the procedure for changing parameter data, including text values and numeric data values.

7.3.1 Parameter Set-up

Categorizes parameters into groups (0- to 26-) and provides a brief description of the function of each group.

7.3.3 1-** Load / Motor

Covers parameters for motor configuration, including general settings, motor data, and load-dependent settings.

7.3.18 20-** FC Closed-loop

Details parameters for configuring the closed-loop PID controller, including feedback sources, conversion, and PID settings.

7.3.20 22-** Application Functions

Covers parameters for application functions like no-flow detection, dry pump protection, and broken belt detection.

8 Troubleshooting

8.1 Alarms and Warnings

Describes how alarms and warnings are signaled, how to reset them, and the difference between trip-locked and non-trip-locked alarms.

8.1.2 Fault Messages

Lists and explains various fault messages, their causes, and troubleshooting steps.

9 Specifications

9.2 Special Conditions

Covers special conditions affecting drive performance, including derating for altitude, ambient temperature, and low speed.

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