1 Introduction
1.1 Purpose of the Manual
The purpose of this manual is to provide information for
the installation and operation of a VLT
®
Low Harmonic
Drive. The manual includes relevant safety information for
installation and operation.
and
introduce the unit function and
cover proper mechanical and electrical installation
procedures. There are chapters on start-up and commis-
sioning, applications and basic troubleshooting.
provides a quick reference for
ratings and dimensions, as well as other operating specifi-
cations. This manual provides a basic knowledge of the
unit and explains set-up and basic operation.
1.2 Additional Resources
Other resources are available to understand advanced
functions and programming.
•
The
VLT
®
AutomationDrive FC 302 Instruction
Manual
provides details on installation and
operation of the adjustable frequency drive.
•
The
VLT
®
AutomationDrive FC 302 Programming
Guide
provides greater detail on working with
parameters and many application examples.
•
The
VLT
®
AutomationDrive FC 302 Design Guide
provides detailed capabilities and functionality to
design motor control systems.
•
Supplementary publications and manuals are
available from Danfoss.
See
www.danfoss.com/BusinessAreas/DrivesSo-
lutions/Documentations/Technical
+Documentation.htm
for listings.
•
Optional equipment may change some of the
procedures described. Reference the instructions
supplied with those options for specific
requirements. Contact the local Danfoss supplier
or visit the Danfoss website:
BusinessAreas/DrivesSolutions/Documentations/
TeDocumentation.htm
for downloads or
additional information.
•
The
VLT
®
Active Filter AAF00x Instruction Manual
provides additional information about the filter
portion of the low harmonic drive.
1.3 Product Overview
1.3.1 Intended Use
A frequency converter is an electronic motor controller
that converts AC mains input into a variable AC waveform
output. The frequency and voltage of the output are
regulated to control the motor speed or torque. The
frequency converter can vary the speed of the motor in
response to system feedback, such as with position sensors
on a conveyor belt. The frequency converter can also
regulate the motor by responding to remote commands
from external controllers.
The frequency converter:
•
Monitors the system and motor status.
•
Issues warnings or alarms for fault conditions.
•
Starts and stops the motor.
•
Optimises energy efficiency.
Operation and monitoring functions are available as status
indications to an outside control system or serial communi-
cation network.
A low harmonic drive (LHD) is a single unit that combines
the frequency converter with an advanced active filter
(AAF) for harmonic mitigation. The frequency converter
and filter are packaged together in an integrated system,
but each functions independently. In this manual, there are
separate specifications for the frequency converter and the
filter. Since the frequency converter and filter are in the
same enclosure, the unit is transported, installed, and
operated as a single entity.
Introduction
Installation Manual
MG37A322
Danfoss A/S © Rev. 04/2015 All rights reserved.
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