X251, X4, X6, X56, X53, X51, X55, X18 and X19: for internal use.
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Cooling air flow
The figure below shows cooling air flow in frames R6 to R9 (side view) and in frames R10
and R11 (front view).
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Overview of power and control connections
The diagram shows the power connections and control interfaces of the drive.
R6...R9
Operation principle and hardware description 35
R10, R11