SIEMENS
6/44
Siemens CR 1 · 2015
6
■
Characteristic curves
(continued)
Drive systems
SINAMICS S120 Cabinet Modules
The following table lists the maximum achievable output fre-
quency as a function of the pulse frequency:
Overload capability
SINAMICS S120 Cabinet Modules have an overload reserve,
e.g. to handle breakaway torques. If larger surge loads occur,
this must be taken into account when configuring. In drives with
overload requirements, the appropriate base-load current must,
therefore, be used as a basis for the required load.
Permissible overload assumes that the drive converter is opera-
ted at its base-load current before and after the overload occurs,
based on a duty cycle duration of 300 s.
For temporary, periodic duty cycles with high variations of load
within the duty cycle, the relevant sections of the SINAMICS Low
Voltage Engineering Manual must be observed.
Motor Modules in chassis format
Motor Modules with power units in chassis format can be confi-
gured on the basis of different base-load currents.
The base-load current for a low overload
I
L
is based on a duty
cycle of 110 % for 60 s or 150 % for 10 s.
The base-load current for a high overload
I
H
is based on a duty
cycle of 150 % for 60 s or 160 % for 10 s.
Line Modules in chassis format
The base-load current for a high overload
I
H DC
is based on a
duty cycle of 150 % for 60 s or
I
max DC
for 5 s.
Pulse frequency
Max. achievable output frequency
1.25 kHz
100 Hz
2.00 kHz
160 Hz
2.50 kHz
200 Hz
≥
4.00 kHz
300 Hz
60 s
10 s
300 s
t
1.1 x
I
L
1.5 x
I
L
Short-time current 110 %
Short-time current 150 %
Rated current (continuous)
Converter current
G_D213_EN_00035
Base-load current
I
L
for low overload
I
L
I
rated
60 s
10 s
t
1.5 x
I
H
1.6 x
I
H
Short-time current 160 %
Short-time current 150 %
Rated current (continuous)
Converter current
G_D213_EN_00036
Base-load current
I
H
for high overload
I
H
I
rated
300 s
60 s
5 s
t
300 s
I
rated DC
I
H DC
Base-load current
I
H DC
for high overload
G_D213_EN_00079
Converter current
Rated current (continuous)
Short-time current 150 %
Short-time current
I
max
I
max DC
1.5 x
I
H DC
© Siemens AG 2015