Siemens SIPROTEC4 7SJ61 Manual page 12

Multifunction protection with control; input/output unit with local control; multifunctional machine protection;
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Execution of switching operations via PROFIBUS-DP
Commands with
pulse output
2-2
Note
For the definition of the values for "quiescent status", ON and OFF ref. to
chap. 5.2 and 5.3.
Output of a control pulse to switch a switching device incl. monitoring the
programmed times is executed autonomously by the SIPROTEC device.
The switching operation (the pulse output via the allocated binary
outputs of the SIPROTEC device) is executed, if in the PROFIBUS-DP
output message the value of the corresponding pair of bits is changed
from "quiescent status" or ON to OFF or from "quiescent status" or
OFF to ON controlling double commands,
from "quiescent status" to ON controlling single commands.
For controlling switching devices it is preferred to use pulse outputs, for
which a number of parameters (e.g. output duration, overtravel time,
checkback supervision time) have to be set using the parameterization
software DIGSI.
Note
The switching direction OFF for single commands with pulse output is
not permitted and is rejected in the SIPROTEC device.
7SJ61/62/63, 6MD63, 7UM61 PROFIBUS-DP – Communication profile
C53000-L1840-B001-02

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