Rated Data Of Converters For Drives With Low Demands On Control Performance - Siemens SINAMICS G130 Engineering Manual

SINAMICS G130
Engineering Information
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Rated data of converters for drives with low demands on control performance

Main applications
SINAMICS G130 Chassis are primarily intended for applications which require a lower standard of dynamic response
and control accuracy and are usually operated in sensorless vector control mode.
They are basically not capable of regenerative operation. For applications where the drive operates in regenerative
mode for brief periods, it is possible either to activate the V
Where the application requires a higher standard of control, i.e. where the control accuracy is more important than
the dynamic response, SINAMICS G130 Chassis can be equipped with an SMC30 speed encoder interface which
enables them to operate with TTL/HTL incremental encoders.
Line supply voltages
SINAMICS G130 Chassis are available for the following line supply voltages:
•
380 V – 480 V 3AC
•
500 V – 600 V 3AC
•
660 V – 690 V 3AC
The permissible voltage tolerance is ±10 % continuously and -15 % for brief periods (< 1 min). In the case of line
undervoltages within the specified tolerances, the available output power will drop accordingly unless additional
power reserves are available to increase the output current.
Usable output currents
The output currents specified in the selection and ordering data can be utilized over the entire frequency or speed
setting range, i.e. even at very low output frequencies down to zero speed.
The specified rated output current is the maximum continuous thermally permissible output current. The units have
no additional overload capacity when operating at this current.
Overload capability, load duty cycle definitions
When a drive is required to overcome breakaway torques or is subjected to high surge loads, its configuration must
take these factors into account. In such instances, it must be operated on the basis of a base load current which is
lower than the rated output current. Sufficient overload reserves are available for this purpose. The load duty cycles
for operation with low and high overloads are defined below.
•
The base load current I
•
The base load current I
These overload values apply on condition that the converter is operated at its base load current before and after the
period of overload on the basis of a load duty cycle duration of 300 s in each case.
Converter current
Short-time current
1.1 I
L
I
N
I
L
60 s
Load duty cycle definition for low overload
Overload and overtemperature protection
SINAMICS G130 Chassis are equipped with effective overload and overtemperature protection mechanisms which
protect them against thermal overloading.
SINAMICS Engineering Manual – May 2008
170/396
© Siemens AG
for low overload is based on a load duty cycle of 110% for 60 s or 150% for 10 s.
L
for a high overload is based on a load duty cycle of 150% for 60 s or 160% for 10 s.
H
Rated current (continuous)
Base load current I
L
for low overload
300 s
t
controller or install braking units.
dc max
Load duty cycle definition for high overload