Application And Mode Of Operation - Siemens SICAM P 7KG7750 Manual

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1.1 Application and Mode of Operation

1.1 Application and Mode of Operation
Range of Application
The Power Meter SICAM P is capable of recording several different power system measure-
ments. In addition, the SICAM P is designed to be utilized in a number of different industries.
The display of measured quantities can be easily configured to the specific requirements of the
user.
Network linking is possible with the integral RS485 port equipped with the standard PROFIBUS
DP-V1, Modbus RTU/ASCII or IEC 60870-5-103 protocol which provide for indication, evaluation
and processing of several SICAM P measurements at a central master station.
Mode of Operation
Input voltages and currents are sampled for calculation of the corresponding RMS values. All
measurements derived from sampled values are calculated by a processor. Measured quantities
can be displayed on the screens and/or transmitted via the serial interface.
With the SICAM P, it is possible to program limit value groups for various measured quantities
to activate limit violations when the value of a specific measured quantity exceeds a programmed
threshold. In addition, it is possible use logical elements (AND, OR) to combine two or more mea-
sured quantities for the purpose of generating a limit violation. Limit violations are counted, indi-
cated on the screen and/or utilized to operate the binary output contacts. The oscilloscope may
be triggered via a limit violation as well.
All measured quantities can be displayed on the SICAM P screens as required by the user. Up
to 20 screens can be selected with the front keys. The number, type, content and sequence of
the screens are configurable. SICAM P is delivered with pre-programmed default settings.
A status line displayed in the measured value screens indicates status, interfacing and diagnos-
tic messages for the SICAM P. The display is automatically refreshed every second.
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Power Meter SICAM P 7KG7750/55, Manual
E50417-B1076-C340-A6, Edition 09.2013