Siemens SINAMICS MV, Function Manual

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④
Power Stack Adapter (part of the basic device, not part of the option)
The principle of the firing pulse interruption (inhibit) has a two-channel structure. The power supply for the
diode light emitters and also the outputs of the diode light emitter drivers can be interrupted.
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⑤
Converter control (part of the basic device, not part of the option)
The converter control comprises a SIMOTION D4x5 and SINAMICS CU320 - referred to the two-channel firing
pulse inhibit, only plays a subordinate role. Even if these components are indispensable when it comes to
operating the converter, the function of the two-channel firing pulse inhibit is an independent hardware
solution, without the necessity of having to use software components for the control. Having said that, the
control is integrated into the switching sequence and serves to additionally monitor the function.
Note
Firmware version
The evaluation of the firing pulse inhibit feedback signals from the PSAs and the initiation of the
alarm according to function block diagram FBD 9845 are only available from firmware SINAMICS
MV V5.2.4.1 and higher. The "SCOUT" SSP MV V5.2.4 software is also required.
3.2 Function features
After activation, the PSA modules to implement the "Two-channel firing pulse inhibit" function
are incorporated by interrupting the fiber-optic cable transmission to the PSAs through two
channels.
Description
3.2 Function features
Two-channel firing pulse inhibit
Function Manual, 07/2021, A5E51227986A
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