Avt Combination Module; Power Stack Adapter; Figure 3-3 Schematic Diagram Of The Thyristor Module Cooling System; Figure 3-4 Avt Combination Module - Siemens SINAMICS SL150 6SL38655UM427AA02 Operating Instructions Manual

Description
3.3 Power unit
Figure 3-3 Schematic diagram of the thyristor module cooling system
3.3.2.3

AVT combination module

The AVT combination module (Actual Value Transmission) processes signals for sensing the
actual current and voltage values. The AVT combination module converts analog signals into
digital signals. Then the module transfers the signals to the Power Stack Adapter (PSA). The
signals are transferred to the PSA via fiber-optic cables.
Figure 3-4
See also
Voltage actual value sensing (Page 31)
3.3.2.4

Power Stack Adapter

Figure 3-5
The power stack adapter (PSA) acts as an interface between the power unit and the open-loop/
closed-loop controller. The Power Stack Adapter is also where the power unit is electrically
isolated from the open-loop/closed-loop controller. The DRIVE-CLiQ serial communication
interface ensures the exchange of data between the Power Stack Adapter and Control Unit
(CU).
In the Power Stack Adapter, the switching information predefined by the Control Unit is
translated into firing pulses (long pulses). The firing pulses are converted to optical signals and
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AVT combination module
Example: Power Stack Adapter
SINAMICS SL150 6SL38655UM427AA02
Operating Instructions Rev.201910281507 EXAMPLE