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Introduction
• The function is NOT a Safe Torque Off (STO) function.
• A risk analysis is not available.
• STO functionality can only be implemented on the system side in conjunction with additional
measures, and must be certified by a third party.
• At the time of activation, the system must be at a complete standstill.
1.1
About these instructions
• This documentation describes the two-channel firing pulse inhibit (a 2-channel light on/light
off function of the light emitting control).
• This documentation addresses the following persons:
– System integrators
– Commissioning engineers
– Service personnel of the SINAMICS medium voltage converter
Text format features
You can find the following text format features in these instructions:
1. Handling instructions are always formatted as a numbered list. Always perform the steps in
the order given.
• Lists are formatted as bulleted lists.
– Lists on the second level are hyphenated.
Note
The note provides you with additional information about the product itself, handling the product
- and the relevant documentation.
Two-channel firing pulse inhibit
Function Manual, 07/2021, A5E51227986A
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