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 oîš‚er 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 conîš‚gurations that diîš„er from standalone
D-sized units. To avoid equipment malfunction, never
attempt to replace standalone modules with VLT
®
Parallel Drive Modules.
3.2 Tools Required
Item Description
ESD protection kit Wrist strap and mat
Metric socket set 7–19 mm
Socket extensions 100–150 mm (4 in and 6 in)
Magnetic sockets –
Ratchet wrench –
Torque wrench Torque range 0.5–19 Nm (6–170 in-lb)
Torx driver set T10–T50
Needle nose pliers –
Screwdrivers Standard and Phillips
Table 3.1 Tools Required
Item Description
Digital Volt-Ohm Meter
(PWM-compatible)
•
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.
Analog voltmeter (with
safety probe tip extenders)
–
Oscilloscope –
Clamp-on ammeter Rated for true RMS
Split bus power supply p/n 130B3146
Signal test board p/n 176F8437
Parallel drive module service
kit
1)
p/n 176F3745
Table 3.2 Instruments Recommended to Test Drives
1) Used for testing only VLT
®
Parallel Drive Modules.
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.
Product Overview Service Guide
MG94A502 Danfoss A/S © 02/2019 All rights reserved. 15
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