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3.4.5
Current de-rating depending on 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 data for Motor Modules.
Table 3- 13
Derating factor of the output current as a function of the pulse frequency for devices with a rated pulse fre-
quency of 1.25 kHz
Article No.
Type rating
6SL3320-...
[kW]
1TG41-5AA3
1400
Note
Derating factors for pulse frequencies in the range between two fixed values
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
The adjustable pulse frequencies - and therefore the output frequencies that can be achieved
with the factory-set current controller clock cycles - are listed below.
Table 3- 14
Maximum output frequencies achieved by increasing the pulse frequency
Current controller
clock cycle
T
I
400 µs
With the "High output frequencies" license, which can be ordered as option J01 on the CompactFlash card for SINAMICS
1)
S120, the maximum output frequency is increased up to 650 Hz.
Refer to the Low Voltage Configuration Manual for current controller clock cycles deviating
from the factory setting.
Air-Cooled Chassis Power Units - supplement to Motor Module 6SL3320-1TG41-5AA3
Equipment Manual, 10/2020, A5E50422764A
Output current
at 1.25 kHz
[A]
Connection voltage 675 ... 1035 V DC (line voltage 3 AC 500 ... 690 V)
1450
Adjustable pulse
frequencies
f
p
1.25 kHz
2.50 kHz
5.00 kHz
7.50 kHz
Motor Module Chassis 6SL3320-1TG41-5AA3
Derating factor at the pulse frequency
2 kHz
2.5 kHz
83 %
75 %
Maximum achievable output frequency f
V/f operating mode
104 Hz
208 Hz
416 Hz
550 Hz
1)
4 kHz
5 kHz
55 %
40 %
Vector operating
mode
104 Hz
208 Hz
300 Hz
300 Hz
3.4 Technical data
7.5 kHz
25 %
A
Servo mode
-
-
-
-
39
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