Parameter Group 14: Special Functions - Danfoss VLT Micro Drive FC 51 Series Programming Manual

VLT Micro Drive FC 51

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:
[0] 2 KHz
* 4 KHz
[1]
[2] 8 KHz
[4] 16 KHz
14-03 Overmodulation
Option:
[0] Off
* On
[1]
4.11.3. 14-1* Mains Monitoring
This parameter group supplies functions for handling imbalance on mains.
14-12 Functions at Mains Imbalance
Option:
* Trip
[0]
[1] Warning
[2] Disabled
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:
Manual Reset
*
[0]
[1] AutoReset 1
[2] AutoReset 2
[3] AutoReset 3
[4] AutoReset 4
[5] AutoReset 5
Function:
Select the switching frequency in order to minimize e.g. acoustic noise and power loss or maximizing efficiency.
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.
Disables the overmodulation function to avoid torque ripple on the motor shaft.
Connects the overmodulation function to obtain an output voltage up to 15% greater than mains voltage.
Function:
Operation under severe mains imbalance conditions reduces drive lift time.
Select function to take place when severe mains imbalance is detected.
Frequency converter trips.
Frequency converter issues a warning.
No action taken.
Function:
Select reset function after tripping. Once reset, frequency converter can be restarted.
Perform reset via [reset]-button or digital inputs.
Performs one automatic reset after tripping.
Performs two automatic resets after tripping.
Performs three automatic resets after tripping.
Performs four automatic resets after tripping.
Performs five automatic resets after tripping.
MG.02.C4.02 - VLT is a registered Danfoss trademark
4. Parameter Descriptions
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