Siemens SIMATIC - Page 333

Analog modules
6.5 Analog input module SM 331; AI 8 x 14 Bit High Speed; isochrone; (6ES7331-7HF0x-0AB0)
S7-300 Module data
Manual, 06/2017, A5E00105505-AJ
333
Technical specifications
Generation of analog values
Measuring principle Actual value conversion
Integration/conversion time/resolution (per channel)
• programmable
yes
• Basic conversion time per channel
52 µs
• Resolution (including overshoot range)
14 bits
• Interference frequency suppression at interference fre-
quency f1 in Hz
none 400 60 50
• Basic execution time of the module (independent of the
number of enabled channels)
0.42 ms 2.5 ms 16.7 ms 20 ms
Interference frequency suppression, error limits
Interference frequency suppression at f = n (f1 ± 1 %), (f1 = interference frequency) n=1.2...
• Common mode interference (CMV < 11 Vpp)
• Series-mode interference (peak value < rated input range)
> 80 dB
> 40 dB
Crosstalk between inputs
> 65 dB
Operational limit (across entire temperature range, relative to measurement range end value in the selected input range)
• Voltage input
± 1 V
± 5 V
± 10 V
1 V to 5 V
± 0.3 %
± 0.4 %
± 0.3 %
± 0.4 %
• Current input
± 20 mA
0 mA to 20 mA
4 mA to 20 mA
± 0.3 %
± 0.3 %
± 0.3 %
Basic error limit (operational limit at 25 °C, relative to the measurement range end value in the selected input range)
• Voltage input
± 1 V
± 5 V
± 10 V
1 V to 5 V
± 0.2 %
± 0.25 %
± 0.2 %
± 0.25 %
• Current input
± 20 mA
0 mA to 20 mA
4 mA to 20 mA
± 0.2 %
± 0.2 %
± 0.2 %
Temperature error (relative to input range) ± 0.004 %/K
Linearity error (relative to input range)
± 0.03 %
Repeat accuracy (in settled state at 25 °C, relative to input
range)
± 0.1 %