Options unit
designations
Extension cabinets
Possible options
D5h
D1h enclosure with
short extension
Brake, Disconnect
D6h
D1h enclosure with tall
extension
Contactor, Contactor
with Disconnect,
Circuit Breaker
D7h
D2h enclosure with
short extension
Brake, Disconnect
D8h
D2h enclosure with tall
extension
Contactor, Contactor
with Disconnect,
Circuit Breaker
Table 1.2
The D7h and D8h adjustable frequency drives (D2h plus
options cabinet), include a 7.87 in [200 mm] pedestal for
floor mounting.
There is a safety latch on the front cover of the options
cabinet. If the adjustable frequency drive is supplied with a
line power disconnect or circuit breaker, the safety latch
prevents the cabinet door from being opened while the
adjustable frequency drive is energized. Before opening
the door of the adjustable frequency drive, the disconnect
or circuit breaker must be opened (to de-energize the
adjustable frequency drive) and the cover of the options
cabinet must be removed.
For adjustable frequency drives purchased with a
disconnect, contactor or circuit breaker, the nameplate
label includes a type code for a replacement that does not
include the option. If there is a problem with the
adjustable frequency drive, it is replaced independent of
the options.
Refer to
for more detailed
descriptions of the input options and other options that
may be added to the adjustable frequency drive.
1.2 Purpose of the Manual
This manual is intended to provide detailed information for
the installation and startup of the adjustable frequency
drive.
provides requirements for mechanical
and electrical installation, including input, motor, control
and serial communications wiring and control terminal
functions.
provides detailed
procedures for startup, basic operational programming,
and functional testing. The remaining chapters provide
supplementary details. These details include user interface,
detailed programming, application examples, startup
troubleshooting, and specifications.
1.3 Additional Resources
Other resources are available to understand advanced
adjustable frequency drive functions and programming.
•
The
VLT
®
Programming Guide
provides greater
detail on working with parameters and many
application examples.
•
The
VLT
®
Design Guide
is intended to provide
detailed capabilities and functionality to design
motor control systems.
•
Supplementary publications and manuals are
available from Danfoss.
See
http://www.danfoss.com/BusinessAreas/Drives-
Solutions/Documentations/Technical
+Documentation.htm
for listings.
•
Optional equipment is available that 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:
http://
www.danfoss.com/BusinessAreas/DrivesSolutions/
Documentations/TeDocumentation.htm
, for
downloads or additional information.
1.4 Product Overview
An adjustable frequency drive is an electronic motor
controller that converts AC line power input into a variable
AC waveform output. The frequency and voltage of the
output are regulated to control the motor speed or torque.
The adjustable frequency drive can vary the speed of the
motor in response to system feedback, such as position
sensors on a conveyor belt. The adjustable frequency drive
can also regulate the motor by responding to remote
commands from external controllers.
In addition, the adjustable frequency drive monitors the
system and motor status, issues warnings or alarms for
fault conditions, starts and stops the motor, optimizes
energy efficiency, and offers many more control,
monitoring, and efficiency functions. Operation and
monitoring functions are available as status indications to
an outside control system or serial communication
network.
Introduction
VLT
®
HVAC Drive D-Frame
Instruction Manual
MG16D222 - VLT
®
is a registered Danfoss trademark
1-3
1
1
