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5.5. Blocking matrix
By means of a blocking matrix, the operation of any protection
stage can be blocked. The blocking signal can originate from
the digital inputs DI1 to DI6, or it can be a start or trip signal
from a protection stage or an output signal from the user's
programmable logic. In the block matrix Figure 5.5-1 an active
blocking is indicated with a black dot (•) in the crossing point
of a blocking signal and the signal to be blocked.
Figure 5.5-1 Blocking matrix and output matrix
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