Approvals And Certifications - Danfoss VLT AQUA Drive FC 202 Operating Manual

Introduction
1 1
1.4.4 Block Diagram of the Frequency
Converter
Illustration 1.3 is a block diagram of the internal
components of the frequency converter.
Area
1 Mains input
2 Rectifier
3 DC bus
4 DC reactors
5 Capacitor bank
6 Inverter
7 Output to motor
6
VLT
Title Functions
•
3-phase AC mains supply to
the frequency converter.
•
The rectifier bridge converts
the AC input to DC current to
supply inverter power.
•
Intermediate DC-bus circuit
handles the DC current.
•
Filter the intermediate DC
circuit voltage.
•
Prove mains transient
protection.
•
Reduce RMS current.
•
Raise the power factor
reflected back to the line.
•
Reduce harmonics on the AC
input.
•
Stores the DC power.
•
Provides ride-through
protection for short power
losses.
•
Converts the DC into a
controlled PWM AC waveform
for a controlled variable
output to the motor.
•
Regulated 3-phase output
power to the motor.
Danfoss A/S © 11/2016 All rights reserved.
®
AQUA Drive FC 202
Area
8 Control circuitry
Illustration 1.3 Block Diagram of Frequency Converter
1.4.5 Enclosure Types and Power Ratings
For enclosure types and power ratings of the frequency
converters, refer to chapter 8.9 Power Ratings, Weight, and
Dimensions.

1.5 Approvals and Certifications

Table 1.3 Approvals and Certifications
More approvals and certifications are available. Contact the
local Danfoss partner. Frequency converters of enclosure
size T7 (525–690 V) are UL certified for only 525–600 V.
The frequency converter complies with UL 508C thermal
memory retention requirements. For more information,
refer to the section Motor Thermal Protection in the
product-specific design guide.
NOTICE
IMPOSED LIMITATIONS ON THE OUTPUT
FREQUENCY (due to export control
regulations):
From software version 1.99, the output frequency of the
frequency converter is limited to 590 Hz.
Title Functions
•
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.
MG21A402