Siemens Simatic S7-300 - Page 245

Analog modules
6.3 Analog input module SM 331; AI 8 x 16 Bit; (6ES7331-7NF00-0AB0)
S7-300 Automation System Module data
Manual, 08/2006, A5E00105505-04
6-11
Technical data
Technical data
Dimensions and weight
Dimensions W x H x D (mm) 40 x 125 x 117
Weight approx. 272 g
Module-specific data
Isochronous mode supported No
Number of inputs 8
Cable length
• shielded
max. 200 m
Voltages, currents, electrical potentials
Electrical isolation
• between channels and the backplane bus
Yes
Permissible potential difference
• between inputs (CMV)
• Between the inputs and M
internal
(V
iso
)
AC 35 V / DC 50 V,
60 VAC / 75 VDC
Isolation test voltage 500 VDC
Current consumption
• from the backplane bus
max. 130 mA
Power loss of the module typ. 0.6 W
Formation of analog values
Measuring principle Integrating
Integration/conversion time/resolution (per channel)
• programmable
Yes
• Integration time in ms
10 16,7 20 100
• Basic conversion time per channel group with more than
one active channel
35 55 65 305
• Channel conversion time per channel group, only with active
channel group 0 or 1
10 16,7 20 100
Channel integration time (1/f1) in ms 10 16,7 20 100
• Resolution (including overshoot range)
15 bits + sign
• Noise suppression at interference frequency f1 in Hz
100 60 50 10
Basic execution time of the module, in ms (all channels
enabled)
140 220 260 1220
Noise suppression, error limits
Noise suppression at f = n (f1 1%), (f1 = interference frequency); n= 1, 2, ...
• Common-mode noise (V
cm
< 50 V)
• Series mode interference (peak value of disturbance < rated
input range)
> 100 dB
> 90 dB
Crosstalk between inputs > 100 dB
Operational limit (across temperature range, relative to input
range)
C
MV
= 0 / C
MV
= ±50 V
• Voltage input
• Current input
±0,1% / ± 0,7%
±0,3% / ± 0,9%