Danfoss VLT AutomationDrive FC 300 Series Design Guide

FC 300 Design Guide
How to Program
" Parameters: Special
Functions
" 14-0* Inverter Switching
14-00 Switching Pattern
Option:
60 AVM [0]
*
SFAVM [1]
Function:
Choose between two different switching
patterns: 60° AVM and SFAVM.
14-01 Switching Frequency
Option:
*
5.0 kHz [5]
Function:
Determines the inverter switching frequency. If
you c hange the switching frequency, acoustic
noise from the motor is minimized.
NOTE
The output frequency value of the
adjustable frequency drive can
neverbeavaluehigherthan1/10
of the switching frequency.
When the motor is running, adjust the switching
frequency in par. 4-11 until the motor is as
noiselessaspossible. Seealsopar. 14-00
and the section Derating.
NOTE
Switching frequencies higher than
5.0 kHz lead to automatic derating
of the maximum output of the
adjustable frequency drive.
14-03 Overmodulation
Option:
*
Off [0]
On [1]
Function:
Allows conne ction of the overmodulation
function for the output voltage.
Off means no overmodulation of the output
voltage, and means that t orque ripple on the
crankshaft is avoided. Th is feature may be
useful e.g. on grinding machines.
On will allow an output voltage greater than
the mains voltage (up to 15%).
14-04 PWM Random
Option:
*
Off [0]
On [1]
Function:
Transform the audible switching motor noise from a
clear ring tone into a less discernable "white" noise
by slightly altering (at random) the synchronization
of the pulse width modulated output phases.
" 14-1* Main s On/Off
14-10 Mains Failure
Option:
*
No function [0]
Controlled alarm suppression [5]
Function:
Informs the unit of what to do if mains voltage
drops below the limit set in par. 14-11.
Select *No function [0] (default setting) if
the function is not required.
Controlled alarm suppression [5] - suppres s the
"undervoltage alarm" and "undervoltage warning"
14-11 Mains Voltage at Mains Fault
Range:
180 - 600 V
*
342V
Function:
Defines the AC voltage level of the selected
function in par. 14-10.
14-12 Function at Mains Imbalance
Option:
*
Trip [0]
Warning [1]
Function:
Select to trip the drive or issue a warning if the
drive detects a severe mains imbalance. Operation
under severe mains imbalance conditions red uces
the life of the unit. It is severe if the drive is
operated continuously near nominal load (i.e.
running a pump or fan near full speed).
*
default setting ()display text []value for use in communication via serial communication port
205
MG.33.B
3.22 - VLT is a registered Danfoss trademark

Danfoss VLT AutomationDrive FC 300 Series Specifications

General

Brand	Danfoss
Model	VLT AutomationDrive FC 300 Series
Category	DC Drives
Language	English