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Siemens SMT machine error 2277: The vacuum difference between RV opening and closing is too small

all smt 2026-06-21 3612

Error 2277 on a Siemens Siplace SMT machine is a vacuum sensing error specific to the RV (Revolution) head. It indicates a problem with the vacuum system that is used to pick up and hold components.

In simple terms: The machine performed a self-test to check the vacuum seals for the head's "open" and "closed" states, and it could not detect a sufficient difference between them. This means the vacuum system is not building up pressure correctly, likely due to a leak or a blockage.

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