SIEMENS
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Siemens CR 1 · 2015
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Design
(continued)
SIMOCRANE application examples
SIMOCRANE ECO Technology
Straddle carrier (SC)
Selection steps
1.
Diesel engine
Use of ECO Technology demands that the load-dependent
speed of the diesel engine can be controlled in a closed feed-
back loop. For fast and flexible communication with the ECO
system, use of a CAN bus is recommended. The diesel engine
should be operated in a variable speed range.
2. Generator
A permanent-magnet synchronous generator should be used
due to its better properties over the entire performance range.
This concerns torque motors that offer relatively high output at
low speeds. This is possible thanks to lower engine speeds of
the diesel engine. A typical straddle carrier selection comprises
a synchronous generator with excitation (voltage controller or
automatic voltage regulator (AVR)). This generator type can be
used for the infeed only after a check for voltage interruptions. It
may be necessary to install a reactor between the infeed and the
generator. Please contact the supplier or Siemens Application
Support for more information.
3. Infeed
For ECO, the infeed must be equipped with a SINAMICS S120
Motor Module. In combination with ECO Technology, the Motor
Module generates a stable DC link, even when the generator vol-
tage constantly fluctuates. Only SINAMICS S120 Motor Modules
in chassis format have been tested and approved for this mode
of operation. A Motor Module is selected for the infeed based on
the same criteria as for the Basic Line Module (BLM), i.e. based
on the total output and the current that is required for supplying
the DC link loads.
4.
Traction drives, hoists, traversing units and braking modules
When upgrading to ECO Technology, no criteria influence this
motion package and the selection of the braking module.
5.
Auxiliary supply 460 V AC/400 V AC/50 kVA/50 Hz
All the auxiliary loads must be connected after a converter with
sinewave filter and transformer for 2-phase (L+N) components.
A SINAMICS S120 Motor Module in booksize or chassis format
can be used as an auxiliary drive. The application example and
the software included in the ECO Technology package supply
the settings for operation of the Motor Module (inverter) as an
auxiliary supply. To reduce voltage fluctuations in the system to
a minimum, the converter must operate at a pulse frequency of
8 kHz or 4 kHz. This increase in pulse frequency should, as for
temperature and IGBT checks, be taken into account in the cal-
culation of derating for the drive.
Selection of the converter must take into account the constant
(average) power/current consumption and the maximum power/
current consumption of the connected loads for the purpose of
handling the inrush current.
6.
Controller, such as PLC, HMI with SIMOCRANE CMS
installed and preparation for RCMS
When upgrading to ECO Technology, no criteria influence this
selection.
7.
SIMOCRANE ECO Technology
SIMOTION D4x5-2 is used with SINAMICS Integrated V4.3 SP1
or higher, SINAMICS V4.5 or higher and the two licenses for
Basic Technology and ECO Technology.
© Siemens AG 2015