FCM 300 / FCD 300 / VLT
®
2800 / DP V1 PROFIBUS
System
layout
■ Master-controlled frequency converters
The PROFIBUS Fieldbus was designed to give you
unprecedented flexibility and command over your
controlled system. The PROFIBU S w ill pe rform as a n
integrated part of your frequency converter, giving you
access to all parameters relevant to your application.
The frequency converter will always act as a sla ve, and
together with a master it can exchange a multitude
of information and commands. Control signals such
as speed reference, start / stop of motor, reverse
operation, etc. are transmitted from the mas ter in
the form of a telegramme. The frequency converter
acknowledges receipt by transmitting status signals,
such as running, on reference, motor stopped and so
on to the master. The frequency converter may also
transmit fault indications, alarms and warnings to the
master, such a s O vercurrent or Phaseloss.
The PROFIBUS communicates in accordance with the
PROFIBUS field bus standard, EN 50170, part 3. It
can thus exchange data with all masters that meet
this standard; however, this does not mean tha t all
services available in the PROFIDRIVE profile standard
are supported. The PROFIBUS profile for frequency
converters (version 2 and partly version 3, PNO) is a
part of PROFIBUS which supports only those services
that concern applications with speed control.
C
ommun ication partners
In a control system the frequency converter
will always act as a slave, and as such it may
communicate w ith a single master or multiple masters
depending on the nature of the application. A
master may be a PLC or a PC that is equipped
with a PROFIBUS communication card.
MG.90.A5.02 - VLT is a registered Danfoss trademark
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