Operating instructions

Electrical installation
4.9 Other connections
Drive converter cabinet units
72 Operating Instructions, 10/2008, A5E00288214A
4.9.2 Sine-wave filter (option L15)
Description
The sine-wave filter limits the voltage gradient and the capacitive charge/discharge currents
which usually occur with inverter operation. It also prevents additional noise caused by the
pulse frequency. The service life of the motor is as long as that attained with direct mains
operation.
CAUTION
If a sine-wave filter is connected to the converter, the converter must be activated during
commissioning to prevent the filter from being destroyed (see "Commissioning").
Restrictions
The following restrictions must be taken into account when a sine-wave filter is used:
● The output frequency is limited to no more than 150 Hz.
● The modulation type is permanently set to space-vector modulation without
overmodulation.
● The maximum output frequency is limited to 85% of the input frequency.
● Maximum permissible motor cable lengths:
– Unshielded cable: max. 450 m
– Shielded cable: max. 300 m
● During commissioning, the pulse frequency rises to double the factory setting. This
induces current derating, which must be applied to the cabinet unit rated currents listed in
the technical specifications.
Note
If a filter cannot be parameterized (p0230 ≠ 3), this means that a filter has not been
provided for the cabinet unit. In this case, the cabinet unit must not be operated with a
sine-wave filter.
Table 4- 17 Technical specifications for sine-wave filters with SINAMICS S150
Order no.
SINAMICS S150
Voltage
[V]
Pulse frequency
[kHz]
Output current
[A]
1)
6SL3710-7LE32-1AA0 3 AC 380 – 480 4 172 A
6SL3710-7LE32-6AA0 3 AC 380 – 480 4 216 A
6SL3710-7LE33-1AA0 3 AC 380 – 480 4 273 A
6SL3710-7LE33-8AA0 3 AC 380 – 480 4 331 A
6SL3710-7LE35-0AA0 3 AC 380 – 480 4 382 A
1)
The values apply to operation with a sine-wave filter and do not correspond with the rated
current on the type plate.