Approvals And Certifications; Disposal - Danfoss VLT AutomationDrive FC 302 Operating Instructions Manual

Introduction
1 1
1.4.4 Block Diagram of the Frequency
Converter
Illustration 1.4 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® AutomationDrive FC 302
Title Functions
•
3-phase AC mains power
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 line 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 © 06/2015 All rights reserved.
Area Title
•
8 Control circuitry
•
•
Table 1.3 Legend to Illustration 1.4
Illustration 1.4 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

More approvals and certifications are available. Contact the
local Danfoss partner. Frequency converters of enclosure
type 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.

1.6 Disposal

Do not dispose of equipment containing
electrical components together with
domestic waste.
Collect it separately in accordance with
local and currently valid legislation.
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.
MG34U402