Danfoss VLT Micro Drive FC 51 Series Programming Guide

4.11. Parameter Group 14: Special Functions
4.11.1. 14-** Special Functions
Parameter group for configuring special frequency converter functions.
4.11.2. Inverter Switching 14-0*
Parameters for configuring the inverter switching.
14-01 Switching Frequency
Option: Function:
Select the switching frequency in order to minimize e.g. acoustic noise and power loss or maximizing efficiency.
[0] 2 KHz
[1]
*
4 KHz
[2] 8 KHz
[4] 16 KHz
14-03 Overmodulation
Option: Function:
This feature allows more accurate speed control near and over nominal speed (50/60 Hz). Another advantage
with overmodulation is the ability of staying at a constant speed even though mains is dropping.
[0] Off Disables the overmodulation function to avoid torque ripple on the motor shaft.
[1]
*
On Connects the overmodulation function to obtain an output voltage up to 15% greater than mains voltage.
4.11.3. 14-1* Mains Monitoring
This parameter group supplies functions for handling imbalance on mains.
14-12 Functions at Mains Imbalance
Option: Function:
Operation under severe mains imbalance conditions reduces drive lift time.
Select function to take place when severe mains imbalance is detected.
[0]
*
Trip Frequency converter trips.
[1] Warning Frequency converter issues a warning.
[2] Disabled No action taken.
4.11.4. Trip Reset, 14-2*
Parameters for configuring auto reset handling, special trip handling and control card self test or initialisation.
14-20 Reset Mode
Option: Function:
Select reset function after tripping. Once reset, frequency converter can be restarted.
[0]
*
Manual Reset Perform reset via [reset]-button or digital inputs.
[1] AutoReset 1 Performs one automatic reset after tripping.
[2] AutoReset 2 Performs two automatic resets after tripping.
[3] AutoReset 3 Performs three automatic resets after tripping.
[4] AutoReset 4 Performs four automatic resets after tripping.
[5] AutoReset 5 Performs five automatic resets after tripping.
VLT
p
Micro Drive FC 51 4. Parameter Descriptions
MG.02.C4.02 - VLT
p
is a registered Danfoss trademark 55
4

Danfoss VLT Micro Drive FC 51 Series Specifications

General

Brand	Danfoss
Model	VLT Micro Drive FC 51 Series
Category	Media Converter
Language	English