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Danfoss VLT - User Manual

Danfoss VLT
179 pages
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Contents
1 Safety
1-1
Safety instructions 1-1
Before Commencing Repair Work 1-2
Special conditions 1-2
Avoid unintended Start. 1-3
Safe Stop of the Adjustable Frequency Drive 1-3
IT Line Power 1-5
2 Introduction
2-1
3 Mechanical installation
3-1
Before starting 3-1
Mechanical Dimensions 3-3
4 Electrical installation
4-1
How to connect 4-1
Line power wiring overview 4-6
Motor wiring overview 4-13
DC bus connection 4-17
Brake Connection Option 4-18
Relay Connection 4-20
How to Test Motor and Direction of Rotation. 4-24
Electrical Installation and Control Cables 4-27
5 How to operate the adjustable frequency drive
5-1
Three ways of operating 5-1
How to operate the numeric LCP (NLCP) 5-1
Tips and tricks 5-5
6 How to program the adjustable frequency drive
6-1
How to program 6-1
Quick Menu Mode 6-1
Function Set-ups 6-10
Parameter list 6-55
Main Menu Structure 6-55
0-** Operation and Display 6-56
1-** Load / Motor 6-58
2-** Brakes 6-59
VLT
®
HVAC Drive Instruction Manual Contents
MG.11.A9.22 - VLT
®
is a registered Danfoss trademark

Other manuals for Danfoss VLT

Questions and Answers

  • L
    Lawrence MathisSep 8, 2025
    What to do if Danfoss DC Drives show control card over temperature?
    • D
      Dr. Deborah Perry DDSSep 8, 2025
      If the cutout temperature of the control card is exceeded, check that the ambient operating temperature is within limits.
  • J
    James RamosAug 25, 2025
    What to do if Danfoss VLT report a short circuit?
    • M
      Megan MartinezAug 25, 2025
      If there is a short circuit in the motor or motor wiring, remove power to the frequency converter and repair the short circuit.
  • J
    James CarpenterAug 25, 2025
    How to troubleshoot DC overvoltage in Danfoss VLT DC Drives?
    • M
      Megan GrayAug 26, 2025
      If the intermediate circuit voltage exceeds the limit, connect a brake resistor.
  • T
    Tonya CoxSep 18, 2025
    What does 'missing motor' mean on Danfoss DC Drives?
    • E
      Eric BrownSep 18, 2025
      If an under-load condition was detected, inspect the system for proper operation.
  • J
    Johnny SuarezSep 8, 2025
    What to do if Danfoss DC Drives show heatsink temperature low?
    • J
      Jennifer GonzalezSep 8, 2025
      If the frequency converter is too cold to operate, increase the ambient temperature of the unit.
  • S
    Susan MoonSep 12, 2025
    What does 'dry pump' mean on Danfoss DC Drives?
    • C
      Christopher CaseSep 12, 2025
      If a no-flow condition in the system with the frequency converter operating at high speed indicates a dry pump, troubleshoot the system and reset the frequency converter after the fault has been cleared.
  • E
    Eugene GriffithSep 3, 2025
    How to resolve a brake chopper fault in Danfoss DC Drives?
    • A
      Andrea ClarkeSep 3, 2025
      If the brake transistor is monitored during operation and if a short circuit occurs, the brake function is disabled, remove power to the frequency converter and remove the brake resistor.
  • A
    Allison WebbSep 3, 2025
    What to do if Danfoss VLT DC Drives show inrush fault?
    • D
      Daniel DeanSep 4, 2025
      If too many power-ups have occurred within a short time period, let the unit cool to operating temperature.
  • M
    mendezrobertSep 23, 2025
    What does 'AMA interrupted by user' mean on Danfoss VLT?
    • J
      James MasonSep 23, 2025
      If the AMA has been interrupted by the user, restart AMA after ensuring conditions are safe.
  • M
    Matthew WoodsAug 29, 2025
    What to do if Danfoss VLT DC Drives report motor phase V missing?
    • S
      Scott CaldwellAug 29, 2025
      If motor phase V between the frequency converter and the motor is missing, remove power from the frequency converter and check motor phase V.

Summary

1 Safety

1.1.2 High Voltage Warning

Warning about dangers of high voltage during operation and installation.

1.1.3 Safety Instructions

General safety instructions for operating the adjustable frequency drive.

1.1.4 Before Commencing Repair Work

Procedures to follow before starting any repair or maintenance work.

1.1.8 Avoid Unintended Start

Precautions to prevent accidental motor startup during operation or setup.

1.1.9 Safe Stop of the Adjustable Frequency Drive

Information on the Safe Stop function and its compliance with safety categories.

3 Mechanical Installation

3.2.5 Safety Requirements for Mechanical Installation

Crucial safety precautions for mechanical installation procedures.

4 Electrical Installation

4.1 How to Connect

Instructions for connecting the electrical components of the drive.

4.1.2 Fuses

Information on selecting and using fuses for circuit protection.

4.1.23 How to Test Motor and Direction of Rotation

Procedure to test motor connection and verify rotation direction.

5 How to Operate the Adjustable Frequency Drive

6 How to Program the Adjustable Frequency Drive

6.1 How to Program

Steps and methods for programming the drive's various functions.

7 Troubleshooting

7.1 Alarms and Warnings

How alarms and warnings are signaled, their causes, and reset procedures.

7.1.2 Fault Messages

Detailed list of fault messages, their meanings, and corrective actions.

Danfoss VLT Specifications

General IconGeneral
Frequency50/60 Hz
EnclosureIP20, IP21, IP55, IP66
SeriesVLT
Control TechniqueFlux Vector Control
Output Voltage0-Vinput
Control MethodFieldbus
Communication InterfacePROFIBUS, CANopen
Protection FeaturesOverload, Overvoltage, Undervoltage, Short Circuit, Ground Fault
Cooling MethodLiquid Cooled
Storage Temperature-25°C to +70°C
Relative Humidity5-95% non-condensing
AltitudeUp to 1000m (3280ft) without derating, up to 4000m (13120ft) with derating
Operating Temperature-10°C to +50°C (14°F to 122°F)

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