FCM 300 Series
MG.03.B6.2G - VLT is a registered Danfoss trademark
Product Concept
■ Integration of adjustable frequency drive and
motor
The Danfoss VLT
®
adjustable frequency drive
integrated onto the asynchronous motor gives
infinite speed control in one unit.
The VLT
®
FCM 300 Series is a very compact
alternative to the traditional solution with a VLT
adjustable frequency drive and motor as separate
units. The adjustable frequency drive is attached in
place of the motor terminal box, and it is no higher
than the standard terminal box, nor wider or longer
than the motor (see page 3-2).
Installation is made extremely easy. Panel space is
not a problem. There is no need for special details
on wiring to meet the EMC directive, since motor
cables are not necessary. The only connections are
the AC line and control connections.
Factory-set adaption between theadjustable
frequency drive and motor gives precise and energy
efficient control in addition to reducing installation
time.
The FCM 300 can be used in stand alone systems
with traditional control signals, such as start/stop
signals, speed references and closed loop process
control or in multiple drive systems with control
signals distributed by a fieldbus.
Combination of fieldbus and traditional control signals
and closed loop PID control is possible. Also possib-
le is a combination fieldbus and traditional control
signals and closed loop PID control.
Control structures
■ Block diagram for FCM 300 Series
■
5-2
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