Current Derating As A Function Of The Pulse Frequency - Siemens SINAMICS S120 Equipment Manual

3.7.5

Current derating as a function of the pulse frequency

When the pulse frequency is increased, the derating factor of the output current must be
taken into account.
This derating factor must be applied to the currents specified in the technical specifications.
Table 3- 12
Order number
6SL3315-...
1TE32-1AAx
1TE32-6AAx
1TE33-1AAx
1TE35-0AAx
Note
For pulse frequencies in the range between the specified fixed values, the relevant derating
factors can be determined by linear interpolation.
Maximum output frequencies achieved by increasing the pulse frequency
By multiplying the rated pulse frequency with a multiple integer, the following output
frequencies can be achieved taking into account the derating factors:
Table 3- 13
Table 3- 14
1)
Chassis Liquid Cooled Power Units
Manual, (GH7), 01/2011, 6SL3097-4AM00-0BP1
Derating factor of the output current as a function of the pulse frequency
Unit rating
[kW]
110
132
160
250
Maximum output frequencies achieved by increasing the pulse frequency in VECTOR
mode
Pulse frequency
[kHz]
2
4
Maximum output frequencies achieved by increasing the pulse frequency in SERVO
mode
Pulse frequency
[kHz]
2
4
The maximum output frequency of 650 Hz is can only be achieved for a current controller clock
cycle of 125 µs (factory setting: 250 µs).
Output current for a
pulse frequency of 2 kHz [A]
210
260
310
490
Maximum output frequency
Maximum output frequency
Power Modules
3.7 Technical specifications
Derating factor for a
pulse frequency of 4 kHz
82 %
83 %
88 %
78 %
[Hz]
160
320
[Hz]
300
300 / 650
1)
81