SINAMICS S120
Engineering Information
SINAMICS Engineering Manual – November 2015
Ó Siemens AG
348/528
6.3 Rated data, permissible output currents, maximum output frequencies
6.3.1 Permissible output currents and maximum output frequencies
With SINAMICS S120 Motor Modules, the maximum output frequency is limited to about 100 Hz or about 160 Hz due
to the factory-set pulse frequency in vector control mode (vector-type drive object) of f
Pulse
= 1.25 kHz (current
controller clock cycle = 400 μs) or f
Pulse
= 2.00 kHz (current controller clock cycle = 250 μ). The pulse frequency must
be increased if higher output frequencies are to be achieved. Since the switching losses in the motor-side inverter
increase when the pulse frequency is raised, the output current must be reduced accordingly.
Permissible output current and maximum output frequency as a function of pulse frequency
The table below states the rated output currents of SINAMICS S120 Motor Modules in Chassis format with the factory-set
pulse frequency, as well as the current derating factors at higher pulse frequencies (permissible output currents referred to
the rated output current). The table applies both to air-cooled and liquid-cooled units. In addition to the output power of the
relevant Motor Module, the first column also states the Chassis frame size(s) for which the current derating factors are valid.
The pulse frequencies for the values in the orange boxes can be selected simply by changing a parameter (even
during operation), i.e. they do not necessitate a change to the factory-set current controller clock cycle. The pulse
frequencies for the values in the grey boxes require a change in the factory-set current controller clock cycle and can
therefore be selected only at the commissioning stage. The assignment between current controller clock cycles and
possible pulse frequencies can be found in the List Manual (Parameter List).
Output power
at
400 V / 690 V
Rated output current
or
current derating factor
with pulse frequency of
Current derating factor
with pulse frequency of
Frame size / output 1.25 kHz 2.0 kHz 2.5 kHz 4.0 kHz 5.0 kHz 7.5 kHz 8.0 kHz
3AC 380 V – 480 V
FX / FXL 110 kW
210 A
95 % 82 % 74 % 54 % 50 %
FX / FXL 132 kW
260 A
95 % 83 % 74 % 54 % 50 %
GX / GXL 160 kW
310 A
97 % 88 % 78 % 54 % 50 %
GX 200 kW
380 A
96 % 87 % 77 % 54 % 50 %
GX / GXL 250 kW
490 A
94 % 78 % 71 % 53 % 50 %
HX / HXL 315 kW
605 A
83 % 72 % 64 % 60 % 40 %
HX / HXL 400 kW
745 A
83 % 72 % 64 % 60 % 40 %
HX / HXL 450 kW
840 A
87 % 79 % 64 % 55 % 40 %
JX / JXL 560 kW
985 A
92 % 87 % 70 % 60 % 50 %
JX / JXL 710 kW
1260 A
92 % 87 % 70 % 60 % 50 %
JX / JXL 800 kW
- 1330 A
88 % 55 % - -
JX / JXL 800 kW
1405 A
97 % 95 % 74 % 60 % 50 %
3AC 500 V – 690 V
FX 75 kW
85 A
93 % 89 % 71 % 60 % 40 %
FX / FXL 90 kW
100 A
92 % 88 % 71 % 60 % 40 %
FX 110 kW
120 A
92 % 88 % 71 % 60 % 40 %
FX / FXL 132 kW
150 A
90 % 84 % 66 % 55 % 35 %
GX 160 kW
175 A
92 % 87 % 70 % 60 % 40 %
GX / GXL 200 kW
215 A
92 % 87 % 70 % 60 % 40 %
GX 250 kW
260 A
92 % 88 % 71 % 60 % 40 %
GX / GXL 315 kW
330 A
89 % 82 % 65 % 55 % 40 %
HX 400 kW
410 A
89 % 82 % 65 % 55 % 35 %
HX / HXL 450 kW
465 A
92 % 87 % 67 % 55 % 35 %
HX / HXL 560 kW
575 A
91 % 85 % 64 % 50 % 35 %
HXL 710 kW
735 A
84 % 74 % 53 % 40 % 25 %
JX 710 kW
735 A
87 % 79 % 64 % 55 % 25 %
HXL 800 kW
1
)
810 A
82 % 71 % 52 % 40 % 25 %
JX / JXL 800 kW
810 A
97 % 95 % 71 % 55 % 35 %
JX 900 kW
910 A
92 % 87 % 67 % 55 % 33 %
JX / JXL 1000 kW
1025 A
91 % 86 % 64 % 50 % 30 %
JX / JXL 1200 kW
1270 A
87 % 79 % 55 % 40 % 25 %
JXL 1500 kW
1560 A
87 % 79 % 55 % 40 % 25 %
1) The 800 kW liquid-cooled Motor Module in frame size HXL should only be operated at the factory-set pulse frequency of 1.25 kHz. Where higher
pulse frequencies are required, the 800 kW liquid-cooled Motor Module in frame size JXL should be used because to the better current derating factors
SINAMICS S120: Permissible output current (current derating factor) as a function of pulse frequency
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