Danfoss FC 102 Operating Instructions

1.5 Internal Controller Functions
Illustration 1.4 is a block diagram of the frequency
converter's internal components.
Illustration 1.4 Frequency Converter Block Diagram
Area Title Functions
1 Mains input
•
3-phase AC mains supply to the
frequency converter
2 Rectifier
•
The rectifier bridge converts the
AC input to DC current to
supply inverter power.
3 DC-bus
•
Intermediate DC-bus circuit
handles the DC current.
4 DC reactors
•
Filter the intermediate DC circuit
voltage.
•
Prove line transient protection.
•
Reduce RMS current.
•
Raise the power factor reflected
back to the line.
•
Reduce harmonics on the AC
input.
Area Title Functions
5 Capacitor bank
•
Stores the DC power.
•
Provides ride-through protection
for short power losses.
6 Inverter
•
Converts the DC into a
controlled PWM AC waveform
for a controlled variable output
to the motor.
7 Output to motor
•
Regulated 3-phase output
power to the motor
8 Control circuitry
•
Input power, internal
processing, output, and motor
current are monitored to
provide efficient operation and
control.
•
User interface and external
commands are monitored and
performed.
•
Status output and control can
be provided.
Table 1.3 Legend to Illustration 1.4
1.6
Frame Sizes and Power Ratings
kW High Overload 75 90 110 132 160 200 250 315 315
kW Normal Overload 90 110 132 160 200 250 315 355 400
400 V D3h D3h D3h D4h D4h D4h
500 V D3h D3h D3h D4h D4h D4h
525 V D3h D3h D3h D4h D4h D4h D4h
690 V D3h D3h D3h D4h D4h D4h D4h
Table 1.4 kW Rated Frequency Converters
HP High Overload 100 125 150 200 250 300 350 350
HP Normal Overload 125 150 200 250 300 350 400 450
460 V D3h D3h D3h D4h D4h D4h
575 V D3h D3h D3h D4h D4h D4h D4h
Table 1.5 HP Rated Frequency Converters
Introduction Operating Instructions
MG16D302 Danfoss A/S © Rev. 06/2014 All rights reserved. 7
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Danfoss FC 102 Specifications

General

Brand	Danfoss
Model	FC 102
Category	DC Drives
Language	English