Efficient Networks S120 manual Basic functions Dv/dt filter plus VPL, Order no Name Setting

Basic functions

6.5dv/dt filter plus VPL

●Maximum permissible motor cable lengths:

–Unshielded cables: max. 150 m

–Shielded cables: max. 100 m

●Other restrictions: see the Equipment Manual.

Note

If a filter cannot be parameterized (p0230 < 3), this means that a filter has not been provided for the component. In this case, the drive converter must not be operated with a sinusoidal filter.

Table 6-5	Parameter settings for sinusoidal filters
Order no.		Name	Setting
p0233		Power unit motor reactor	Filter inductance
p0234		Power unit sinusoidal filter	Filter capacitance
		capacitance
p0290		Power unit overload response	Disable pulse frequency reduction
p1082		Maximum rotational speed	Fmax filter/pole pair number
p1800		Pulse frequency	Nominal pulse frequency of the filter
p1802		Modulator modes	Space vector modulation without
			overmodulation

6.5dv/dt filter plus VPL

Description

The dv/dt filter plus VPL consists of two components, the dv/dt reactor and the voltage limiting network (Voltage Peak Limiter), which limits voltage peaks and returns the energy to the DC link.

The dv/dt filter plus VPL is to be used for motors for which the voltage strength of the insulation system is unknown or insufficient. Standard motors of the 1LA5, 1LA6 and 1LA8 series only require them at supply voltages > 500 V +10 %.

The dv/dt filter plus VPL limit the rate of voltage rise to values < 500 V/µs and the typical voltage peaks to the values below (with motor cable lengths of < 150 m):

<< 1000 V at Uline < 575 V

<1250 V with 660 V < Uline < 690 V

WARNING

When a dv/dt filter is used, the maximum pulse frequency of the drive converter is 2.5 kHz (chassis power units up to 250 kW at 400 V) or 4 kHz (chassis power units from 250 kW to 800 kW at 400 V). If a higher pulse frequency is set, then this could destroy the dv/dt filter.

186	Drive Functions
	Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4