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Siemens D 21.4 · 2017
SINAMICS S120 drive system
Chassis format
Air-cooled units in chassis format
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Technical specifications
General technical specifications
Unless clearly specified otherwise, the following technical data are valid for all the following components of the air-cooled
SINAMICS S120 drive system in the chassis format.
Electrical specifications
Rated voltages
380 ... 480 V 3 AC ±10 % (-15 % <1 min)
500 ... 690 V 3 AC ±10 % (-15 % <1 min)
Line supply types
Grounded TN/TT systems and non-grounded IT systems
Line frequency
47 ... 63 Hz
Overvoltage category
III to EN 61800-5-1
Electronics power supply
24 V DC, -15 % +20 %
implemented as PELV circuit in accordance with EN 61800-5-1
Ground = negative pole grounded via the electronics
Rated short-circuit current
per IEC, in conjunction with the
specified fuses or circuit breakers
• 1.1 ... 447 kW
65 kA
• 448 ... 671 kW
84 kA
• 672 ... 1193 kW
170 kA
• > 1194 kW
200 kA
Rated short-circuit current SCCR
(Short Circuit Current Rating)
according to UL508C (up to 600 V),
in conjunction with the specified fuses
or circuit breakers
• 1.1 ... 447 kW
65 kA
• 448 ... 671 kW
84 kA
• 672 ... 1193 kW
170 kA
• > 1194 kW
200 kA
Control method
Vector/servo control with and without encoder or V/f control
Fixed speeds
15 fixed speeds plus 1 minimum speed, parameterizable
(in the default setting, 3 fixed setpoints plus 1 minimum speed are selectable using terminal block/
PROFIBUS/PROFINET)
Skippable speed ranges
4, parameterizable
Setpoint resolution
0.001 rpm digital (14 bits + sign)
12 bits analog
Braking operation
With Active Line Modules and Smart Line Modules, four-quadrant operation as standard (energy recovery).
With Basic Line Modules, two-quadrant operation as standard, braking by means of an optional braking chopper,
or alternatively by a Motor Module.
Mechanical specifications
Degree of protection
IP00 or IP20 depending on type
Protection class
I acc. to EN 61800-5-1
Touch protection
EN 50274/DGUV regulation 3 when used as intended
Cooling method
Forced air cooling AF according to EN 60146
© Siemens AG 2017