Product Overview; Introduction; Tools Required; Service Report - Danfoss VLT FC Series Service Manual

Product Overview

3 Product Overview

3.1 Introduction

®
The VLT HVAC Drive series is designed for the HVAC
market. These drives operate in variable torque mode or
constant torque down to 15 Hz and include special
features and options designed for fan and pump
applications.
®
The VLT Refrigeration Drive series is designed for use with
refrigeration systems. These drives offer continuous
variable speed control and provide energy savings in a
range of applications including pumps, fans, compressors,
condensers, and evaporators.
®
The VLT AQUA Drive series is designed for water and
waste water markets. These drives can operate in either
constant torque or variable torque with limited overload
capabilities. Their features and options make them suitable
for various water pumping and processing applications.
®
The VLT AutomationDrive series is fully programmable for
either constant torque or variable torque industrial
applications. These drives operate various applications and
incorporate a wide range of control and communication
options.
These models are available in IP20 (protected chassis), IP21
(UL type 1), and IP54 (UL type 12) enclosures.
Special versions of these 3 drive types are available as VLT
Parallel Drive Modules in IP00 enclosures. They are used by
panel builders to create 2-module or 4-module systems.
NOTICE
PARALLEL MODULE CONFIGURATION
VLT® Parallel Drive Modules have specialized software
and hardware configurations that differ from standalone
D-sized units. To avoid equipment malfunction, never
attempt to replace standalone modules with VLT
Parallel Drive Modules.
MG94A502
Service Guide

3.2 Tools Required

Item
ESD protection kit
Metric socket set
Socket extensions
Magnetic sockets
Ratchet wrench
Torque wrench
Torx driver set
Needle nose pliers
Screwdrivers
Table 3.1 Tools Required
Item
Digital Volt-Ohm Meter
(PWM-compatible)
Analog voltmeter (with
safety probe tip extenders)
Oscilloscope
Clamp-on ammeter
Split bus power supply
Signal test board
®
Parallel drive module service
1)
kit
Table 3.2 Instruments Recommended to Test Drives
1) Used for testing only VLT

3.3 Service Report

Report the serial number (S/N) of the drive when
requesting support, or preparing the service report. The
®
serial number is listed on the nameplate. Refer to
Illustration 3.1 for details.
Danfoss A/S © 02/2019 All rights reserved.
Description
Wrist strap and mat
7–19 mm
100–150 mm (4 in and 6 in)
–
–
Torque range 0.5–19 Nm (6–170 in-lb)
T10–T50
–
Standard and Phillips
Description
•
Rated for true RMS.
•
Rated for the mains AC
voltage and DC-link voltage of
the drive.
(DC-link voltage = 1.414 x
mains voltage).
•
Supports the diode mode.
–
–
Rated for true RMS
p/n 130B3146
p/n 176F8437
p/n 176F3745
®
Parallel Drive Modules.
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