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Description
3.5 Description of the components
3.3.4
Gating
The PowerCards are interconnected via a low-inductance busbar, which results in a three-level
phase configuration for a voltage DC link drive. The gating boards are fitted directly onto the
IGBT modules, thereby ensuring a compact design and a high level of interference immunity.
The power semiconductors are connected through the gating boards. The gating command is
transmitted from the power stack adapter (PSA) to the gating board via a plastic fiber-optic
cable connection.
3.4
Operating principle
A constant DC-link voltage for the Motor Module is generated from the line voltage. The Motor
Module provides the power for the connected motor via the DC-link voltage.
The DC link capacitors smooth the voltage and stop the energy in the DC link. The DC link
capacitors are maintenance free and self-healing. The device is switched off when the circuit
breaker is disconnected/opened. The DC link is discharged by means of balancing resistors.
3.5
Description of the components
Further information is available in the following documents:
● Additional information about connecting the various components is provided in the circuit
● You can find information on the interfaces and LEDs of individual components in the
3.5.1
SINAMICS Control Unit
The CU320 Control Unit is the central control module of the drive's open-loop and closed-loop
control system. The connections are wired internally to the customer terminal block.
34
manual.
"Supplementary component descriptions
view/109768128)" document.
(https://support.industry.siemens.com/cs/ww/en/
SINAMICS GM150 6SL3810-2LN31-8AA2
Operating Instructions Rev.201910281332 EXAMPLE
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