Drive Control - Danfoss Vacon NXP Applications Manual

Description of parameters
5.7

Drive control

2.7.1 Switching Frequency
The switching frequency of the IGBT Bridge in kHz. Changing the default value can have
an impact on the LCL filter operation.
2.7.2 Regen Options 1
This packed bit word is made for enabling/disabling different control options for the
regeneration control.
B0 = Disable DCV reduction with a reactive reference generation with high line voltage.
B1 = Disable LCL reactive power compensation.
B5 = Disable all harmonic elimination compensation.
This is active by default. When activated, this function will reduce little 5
harmonics. This will not reduce harmonics of the grid, only the harmonics of the
drive.
B8 = Enable double pulse synchronisation.
This option will generate two synchronisation pulses instead of one. It can help the
synchronisation on a weak grid.
B9 = Enable soft synchronisation (>= FI9).
This function enables zero crossing detection on drives that are FI9 or bigger.
When this is active and there is a connection to the grid when the drive is in the
STOP state, Supply Frequency is updated by the detected frequency.
B12 = Enable floating DC reference. DC-link voltage will follow the line voltage.
When the drive is in the RUN state, it can detect the Supply Voltage. If the supply
voltage changes, also the internal DC Reference is changed so that DC voltage is:
B13 = Enable use of D7 board for start synchronisation.
When an OPT-D7 board is installed, this bit will activate the synchronisation by
using a voltage angle and frequency information from the D7 board. The phase
order must be same in both the OPT-D7 and input phases. It is also necessary to
keep the frequency on the positive side. The frequency of the D7 board can be the
same as a Supply Frequency but the phase order can be still wrong.
2.7.3 RegenOptions 2
This packed bit word is made for enabling/disabling different control options for the
regeneration control.
B0 = Reserved
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