Event Recorder - Siemens SIMEAS R-PMU Manual

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7.4 Event Recorder

7.4 Event Recorder
The Event Recorder (ER) records the state changes of binary signals. The binary signals are
sampled with a resolution of 1 kHz and a maximum of 250 state changes per second and DAU.
A separate ring buffer, each with a common parameterizable memory size, is set up for each
DAU. This division ensures that a DAU with many binary changes does not influence the data of
other DAUs.
The registered state changes of the binary signals are collected and stored on the mass storage
device of the SIMEAS R-PMU after one second has elapsed.
Every state change of a binary signal is stored together with a time stamp with a precision of
0.5 ms. In this way, the exact sequence of that occur in quick succession can be detected. The
binary state changes can be allocated to the analog records in the visualization feature of the
evaluation software.
With an assigned memory capacity of 5 Mbyte, each DAU can save up to 4.19 million binary
signal conditions. This is equivalent to at least 16,384 binary event sequences.
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Digital Fault Recorder, SIMEAS R-PMU, Manual
E50417-H1076-C360-A5, Release 10.2012