2.20 Function control and circuit breaker testing
331
7SA522 Manual
C53000-G1176-C155-3
Figure 2-147 Logic diagram of the manual closing procedure
Reclosure via the integrated control functions such as — on-site control, control via
DIGSI
®
, control via serial interface — can have the same effect as manual reclosure,
see parameter .
If the device has an integrated automatic reclosure, the integrated manual closure
logic of the 7SA522 automatically distinguishes between an external control command
via the binary input and an automatic reclosure by the internal automatic reclosure so
that the binary input ´!0DQXDO&ORVHµ can be connected directly to the control
circuit of the close coil of the circuit breaker (Figure 2-148). Each reclosure that is not
initiated by the internal automatic reclosure function is interpreted as a manual reclo-
sure, even it has been initiated by a control command from the device.
Figure 2-148 Manual closure with internal automatic reclosure
If, however, external close commands which should not activate the manual close
function are possible (e.g. external reclosure device), the binary input ´!0DQXDO
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