Analog modules
6.6 Analog input module SM 331; AI 8 x 13 Bit;(6ES7331-1KF01-0AB0)
S7-300 Automation System Module data
Manual, 08/2006, A5E00105505-04
6-43
Technical data
Technical data
Dimensions and weight
Dimensions W x H x D (mm) 40 x 125 x 117
Weight Approx. 250 g
Module-specific data
Isochronous mode supported No
Number of inputs
• with resistive transducers
8
8
Cable length
• Shielded
max. 200 m
max. 50 m at 50 mV
Voltages, currents, electrical potentials
Constant current for resistive transducers
• Resistance thermometer and resistance
measurements 0 ... 600 Ω
• Resistance measurement 0 ... 6 kΩ
max. 0,83 mA
max. 0,25 mA
Electrical isolation
• between channels and the backplane bus
• between channels
Yes
No
Permissible potential difference
• between inputs (C
MV
)
• Between the inputs and M
internal
(V
iso
)
2,0 VDC
75 VDC / 60 VAC
Insulation test voltage 500 VDC
Current consumption
• from the backplane bus
max. 90 mA
Power loss of the module typ. 0.4 W
Formation of analog values
Measuring principle Integrating
Integration/conversion time/resolution (per channel)
• programmable
Yes
• Noise cuppression at interference frequency f1 in Hz
50 60
• Integration time in ms
60 50
• Basic conversion time, including the integration time in ms
66 55
Additional conversion time for resistance measurements in ms 66 55
• Resolution in bits (including overshoot range)
13 bits 13 bits
Noise suppression, error limits
Noise suppression at f = n (f1 ± 1 %), (f1 = interference frequency) n=1.2...
• Common-mode noise (CMV < 2 V)
• Seriesmode interference (peak value of disturbance < rated
input range)
> 86 dB
> 40 dB
Crosstalk between inputs > 50 dB
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