Vacon NX Series Applications Manual

Also see for NX series: User manual User manual Applications manual Maintenance manual Operating guide

Contents

Vacon NX Series Applications Manual Manual pdf 86 page image

86 • VACON® arfiff08 power generationLocal contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/6.6 Drive ControlP2.6.1 Switching FrequencyID 601The switching frequency of the IGBT Bridge in kHz. Changing the default value can havean impact on the LCL filter operation.P2.6.2 AFE OptionsID 1463This packed bit word is made for enabling/disabling different control options for theregeneration control.B5 = Disable all harmonic elimination compensation.This is active by default. When activated, this function will reduce little 5th and 7thharmonics. This will not reduce harmonics of the grid, only the harmonics of the drive.B13 = Enable use of D7 board for start synchronisation.When an OPT-D7 board is installed, this bit will activate the synchronisation by using avoltage angle and frequency information from the D7 board. The phase order must besame in both the OPT-D7 and input phases. It is also necessary to keep the frequency onthe positive side. The frequency of the D7 board can be the same as a Supply Frequencybut the phase order can be still wrong.P2.6.3 AFE Options 2ID 1464This packed bit word is made for enabling/disabling different control options for theregeneration control.P2.6.4 AFE Options 3ID 1466This packed bit word is made for enabling/disabling different control options for theregeneration control.P2.6.5 Start DelayID 1500This parameter defines a starting delay when a run command is given. Whenprogramming different delays to parallel units, the units will start in sequence. This isnecessary in parallel units to make sure that the synchronisation does not happensimultaneously in all the drives. A simultaneous start can lead to a failedsynchronisation. The recommended value between the drives is 500 ms.