Dv/Dt Filter Plus Vpl - Siemens SINAMICS S120 Function Manual

Basic functions

6.5 dv/dt filter plus VPL

● Maximum permissible motor cable lengths:
● 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
p0233
p0234
p0290
p1082
p1800
p1802
6.5 dv/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
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
– Unshielded cables: max. 150 m
– Shielded cables: max. 100 m
Parameter settings for sinusoidal filters
Order no.
Power unit motor reactor
Power unit sinusoidal filter
capacitance
Power unit overload response
Maximum rotational speed
Pulse frequency
Modulator modes
WARNING
Name
Filter inductance
Filter capacitance
Disable pulse frequency reduction
Fmax filter/pole pair number
Nominal pulse frequency of the filter
Space vector modulation without
overmodulation
Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4
Setting
Drive Functions