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VLT® HVAC Drive FC 131
Programming Guide
[6]
6.0 kHz
[7]
8.0 kHz
[8]
10.0 kHz
[9]
12.0 kHz
[10]
16.0 kHz
14-03 Overmodulation
Default value: [0] Off
Conversion index: -
Table 230: Option:
[0]
Off
Select no overmodulation of the output voltage to avoid torque ripple on the motor shaft.
[1]
On
Select [1] On to obtain extra DC-link voltage and torque on the motor shaft.
14-07 Dead Time Compensation Level
Default value: Configuration dependent
Conversion index: 0
Level of applied dead-time compensation in percentage. A high level (>90%) optimizes the dynamic motor response. A level 50–
90% is suitable for both motortorque- ripple minimization and motor dynamics. A 0 level turns off the dead-time compensation.
Table 231: Range:
Min: 0
Max: 100
14-08 Damping Gain Factor
Default value: Configuration dependent
Conversion index: 0
Set the damping factor for DC-link voltage compensation. See parameter 14-51 DC-Link Voltage Compensation.
Table 232: Range:
Min: 0%
Max: 100%
14-09 Dead Time Bias Current Level
Default value: Configuration dependent
Conversion index: 0
To add to the current-sense signal for dead time compensation for some motors, set a bias signal (in percentage).
Table 233: Range:
Min: 0%
Max: 100%
4.11.2 14-1* Mains Failure
Parameters for configuring mains failure monitoring and handling.
124 | Danfoss A/S © 2022.05
Select 6.0 kHz as the inverter switching frequency.
Select 8.0 kHz as the inverter switching frequency.
Select 10.0 kHz as the inverter switching frequency.
Select 12.0 kHz as the inverter switching frequency.
Select 16.0 kHz as the inverter switching frequency.
Parameter type: Option
Data type: u_int8
Parameter type: Range
Data type: u_int8
Default value: Configuration dependent
Parameter type: Range
Data type: u_int8
Default value: Configuration dependent
Parameter type: Range
Data type: u_int8
Default value: Configuration dependent
2-setup: All setups
Change during operation: False
2-setup: All setups
Change during operation: False
2-setup: All setups
Change during operation: True
2-setup: All setups
Change during operation: False
AU370727746889en-000101 / 130R0994
Parameters
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