Siemens SIMEAS R-PMU, Manual, Page: 101 / 296

7
7.3 Continuous Recorder
101
Digital Fault Recorder, SIMEAS R-PMU, Manual
E50417-H1076-C360-A5, Release 10.2012
7.3.5 Continuous Mean Value Recorder for Process Values (CDR)
The continuous mean value recorder for process values – Continuous DC Recorder (CDR) – is
a mean value recorder and stores the arithmetic mean of the process values for every recording
interval. The mean value is always calculated over the complete averaging time.
The maximum recording time can be calculated using the following equation:
where:
t
max
= maximum recording time in days
R = averaging time in seconds
M = parameterized memory space in megabytes (MByte)
D = number of DDAUs activated in the device
Table 7-31 CDR – summary of technical data
Recording time Continuously
Averaging intervals 1 s, 2 s, 5 s, 10 s, 30 s, 60 s, 120 s, 240 s, 300 s, 360 s,
480 s, 600 s
Usable DAUs DDAU
Recorded values Process values
t
max
R M
⋅
D
-------------
0.276
1
MByte
-----------------
⋅
=