Siemens Simatic M7-400 Uživatelský manuál Strana 312

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Analog Modules
5-96
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
Step Response with Strong Smoothing
The following figure illustrates the contents of Table 5-57. It shows the filter settling
time after which, in the case of a step response, the smoothed analog value is
applied to almost 100%, depending on the interference frequency suppression that
has been set. The figure applies to every change of signal at an analog input.
50
100
0
63
Interference frequency suppression 400 Hz:
60 Hz:
50 Hz:
Filter settling time in ms
Signal variation
in percent
Step response for any analog input signal
12030 15060
12.5 83.333 100
Figure 5-32 Step Response of the SM 431; AI 8 14 Bit (6ES7 431-1KF20-0AB0)
5.20.2 Measuring Methods and Measuring Ranges of the SM 431;
AI 8 14 Bit
Measuring Methods
You can set the following measuring methods for the input channels:
Voltage measurement
Current measurement
Resistance test
You specify the setting by means of the measuring range modules on the module
and the “Measuring Type” parameter in STEP 7.
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