indicator lights for voltage (ON), warning (WARNING) and
alarm (ALARM). Most of the frequency converter's
parameter set-ups can be changed immediately via the
LCP 2 control panel. See
for
more details.
1.7.7 FC Protocol
Danfoss frequency converters are able to fulfill many
different functions in a monitoring system. The frequency
converter can be integrated directly in an overall
surveillance system, which allows detailed process data to
be transferred via serial communication.
The protocol standard is based on an RS-485 bus system
with a maximum transmission speed of 9600 baud. The
following frequency converter profiles are supported as
standard:
•
FC Drive, which is a profile adapted to Danfoss.
•
Profidrive, which supports the profidrive profile.
See
chapter 4.8 Serial Communication Parameters
for further
details of telegram structure and drive profile.
1.7.8 Fieldbus Option
The increasing information requirements in industry make
it necessary to collect or visualise different process data.
Important process data help the system technician with
the daily monitoring of the system. The large amounts of
data involved in major systems make a higher transmission
speed than 9600 baud desirable.
Fieldbus option
Profibus
Profibus is a fieldbus system, which can be used for linking
automation devices such as sensors and actuators with the
controls via a 2-conductor cable. Profibus DP is a fast
communication protocol made specially for communication
between the automation system and various types of
equipments.
Profibus is a registered trade mark.
DeviceNet
DeviceNet fieldbus systems can be used for linking
automation devices such as sensors and actuators with the
controls via a 4-wire conductor cable.
DeviceNet is a medium-speed communication protocol
made specially for communication between the
automation system and various types of equipment. Units
with DeviceNet protocol cannot be controlled by FC
protocol and Profidrive protocol.
MCT 10 Set-up Software can be used on the Sub D plug.
1.7.9 Motor Coils
By fitting the motor coil module between the frequency
converter and the motor, it is possible to use up to 200 m
of unscreened/unarmoured motor cable or 100 m of
screened/armoured motor cable. The motor coil module
has an IP20 enclosure and can be installed side-by-side.
To have long motor cables and still comply with
EN55011-1A, motor coil and EMC filter for long motor
cables are needed.
To comply with EN55011-1A, the EMC filter for long motor
cables can only be fitted to a VLT 2800 with integral 1A
filter (R1 option).
Refer to
for more details.
Illustration 1.2 Motor Cable Example
Introduction to VLT 2800
Design Guide
MG27E402
Danfoss A/S © Rev. May/2014 All rights reserved.
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