Introduction; Purpose; Vlt Fc Product Overview - Danfoss VLT HVAC Drive FC 100 Service Manual

High Power Service Manual for VLT
Adjustable Frequency Drives

1 Introduction

1.1 Purpose

The purpose of this manual is to provide detailed technical information and instructions to enable
a qualified technician to identify faults and perform repairs on FC series adjustable frequency
drives in the D and E frames.
It provides the reader with a general view of the unit's main assemblies and a description of the
internal processing. With this information, technicians should have a better understanding of the
adjustable frequency drive's operation to assist in troubleshooting and repair.
This manual provides instructions for the adjustable frequency drive models and voltage ranges
described in the tables on the following page.

1.2 VLT FC Product Overview

VLT HVAC FC 102 series adjustable frequency drives are designed for the HVAC markets. They
operate in variable torque mode or constant torque down to 15 Hz and include special features
and options well suited for fan and pump applications within the HVAC market.
®
VLT AQUA FC 202 series adjustable frequency drives are designed for water and waste water
markets. They can operate in either constant torque or variable torque with limited overload ca-
pabilities. They include specific features and options which make them well suited for use on a
variety of water pumping and processing applications.
VLT AutomationDrive series adjustable frequency drives are fully programmable for either con-
stant torque or variable torque industrial applications. They are full-featured adjustable frequency
drives capable of operating a myriad of applications and incorporating a wide variety of control
and communication options.
These models are available in Chassis/IP00, NEMA 1/IP21 or NEMA 12/IP54 enclosures.
®
FC Series
MG.90.L1.22 - VLT ® is a registered Danfoss trademark
1 Introduction
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