SIEMENS
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Siemens D 31 N · March 2016
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Design
SINAMICS G120C compact inverters
0.55 kW to 18.5 kW (0.75 hp to 25 hp)
SINAMICS G120C compact inverters
Line-side components
Line reactors
Line reactors smooth the current drawn by the inverter and thus
reduce harmonic components in the line current. Through the
reduction of the current harmonics, the thermal load on the
power components in the rectifier and in the DC-link capacitors
is reduced as well as the harmonic effects on the supply. The use
of a line reactor increases the service life of the inverter.
Recommended line-side power components
Standard fuses can be used for the SINAMICS G120C. These
must be dimensioned to comply with local regulations. In this
chapter, you will find recommended components such as fuses
and circuit breakers in compliance with IEC and UL regulations.
DC link components
Braking resistors
The excess energy of the DC link is dissipated using the braking
resistor. The braking resistors are designed for use with the
SINAMICS G120C. This has an integrated brake chopper
(electronic switch).
Load-side power components
Output reactors
Output reactors reduce the rate of voltage rise (dv/dt) and the
height of the current peaks, and enable longer motor cables to
be connected.
Supplementary system components
Intelligent Operator Panel IOP
Graphics-based, user-friendly and powerful operator panel for
commissioning and diagnostics as well as local operator control
and monitoring of SINAMICS G120C.
Basic Operator Panel BOP-2
A 2-line display to provide support when commissioning and
troubleshooting the drive. The drive can be locally controlled.
Memory card
The parameter settings for an inverter can be stored on the
SINAMICS SD memory card. When service is required, e.g. after
the inverter has been replaced and the data have been down-
loaded from the memory card the drive system is immediately
ready for use again. The associated memory card holder is
integrated in the inverter.
PC inverter connection kit 2
For controlling and commissioning an inverter directly from a PC
if the STARTER commissioning tool or SINAMICS Startdrive has
been installed on the PC.
Spare parts
Shield plates
A set of shield plates is included in the scope of delivery for the
motor and signal cables corresponding to the frame size of the
SINAMICS G120C, and can also be ordered as spare parts.
Spare Parts Kit
This kit comprises 4 sets of I/O terminals, 1 RS485 terminal,
2 sets of Control Unit doors (1 × PN and 1 × other communica-
tion versions) and 1 blanking cover.
Set of connectors
A set of connectors for the line feeder cable, braking resistor and
motor cable can be ordered corresponding to the frame size of
the SINAMICS G120C inverter.
Roof-mounted fan
A roof-mounted fan (at the top of the device) comprising a pre-
assembled unit with holder and fan can be ordered correspond-
ing to the frame size of the SINAMICS G120C.
Fan unit
A replacement fan (at the rear of the device; heat sink) compris-
ing a pre-assembled unit with holder and fan can be ordered
corresponding to the frame size of the SINAMICS G120C.
Fuse/
circuit breaker
Line reactor
Output reactor
G_D011_EN_00340a
Motor
IOP
Handheld
USB cable
Braking resistor
BOP-2
IOP
SINAMICS G120C
© Siemens AG 2016