Siemens SIMATIC - Page 384

Analog modules
6.9 Analog input module SM 331; AI 8 x RTD; (6ES7331-7PF01-0AB0)
S7-300 Module data
384 Manual, 06/2017, A5E00105505-AJ
Technical specifications
Mode
8-channel mode (software filter)
Integration/conversion time/resolution (per channel)
• Configurable
• Basic conversion time in ms
• Additional conversion time for resistance measurement in ms
• Additional conversion time for wire break monitoring in ms
• Resolution (including overrange)
• Interference voltage suppression at interference frequency f1 in
Hz
Yes
8 / 25 / 30
25/ 43/ 48*
0
16-bit (including sign)
400 / 60 / 50
Smoothing of the measured values
None/Weak/Medium/Strong
Conversion time (per channel)
25/ 43/ 48 ms
Basic execution time of the module (all channels enabled)
50/ 86/ 96 ms
Mode
4-channel mode (hardware filter)
Integration/conversion time/resolution (per channel)
• Configurable
• Basic conversion time in ms
• Additional conversion time for resistance measurement in ms
• Additional conversion time for wire break monitoring in ms
• Resolution (including overrange)
• Interference voltage suppression at interference frequency f1 in
Hz
Yes
3.3****
100*
100**
16-bit (including sign)
400 / 60 / 50
Smoothing of the measured values
None/Weak/Medium/Strong
Basic execution time of the module (all channels enabled)
10 ms
Interference suppression, error limits
Interference voltage suppression for f = n x (f1 ± 1 %), (f1 = interference frequency), n = 1, 2, etc.
• Common mode interference (U
CM
< 60 V AC)
• Series-mode interference (peak value of the interference < rated
value of the input range)
> 100 dB
> 90 dB
Crosstalk between inputs
> 100 dB
Operational limit (within the entire temperature range, relative to the measuring range end value of the selected input
range)
• Resistance thermometer
– Pt 50, Pt 100, Pt 200, Pt 500, Pt 1000, Ni 100, Ni 120, Ni 200,
Ni 500, Ni 1000, LG-Ni 1000, Cu 50, Cu 100,
– Pt 10, Cu 10
• Resistor
± 1.0 °C
± 2.0 °C
± 0.1 %
Basic error limit (operational limit at 25 °C, in relation to measuring range full-scale value of the input range)
• Resistance thermometer
– Pt 50, Pt 100, Pt 200, Pt 500, Pt 1000, Ni 100, Ni 120, Ni 200,
Ni 500, Ni 1000, LG-Ni 1000, Cu 50, Cu 100,
– Pt 10, Cu 10
• Resistor
± 0.5 °C
± 1.0 °C
±0.05 %