Siemens SIMATIC - Page 417

Analog modules
6.11 Analog input module SM 331, AI 6 x TC isolated (6ES7331-7PE10-0AB0)
S7-300 Module data
Manual, 06/2017, A5E00105505-AJ
417
Technical specifications
Voltages, currents, electrical potentials
Rated electronics supply voltage L +
• Reverse polarity protection
24 VDC
Yes
Constant measuring current for resistance-type transmitters
Typ. 0.9 mA
Electrical isolation
• between channels and the backplane bus
• between channels and electronics power supply
• between channels
In groups of
Yes
Yes
Yes
1
Maximum potential difference
• between channels (U
CM
)
• Between the channels and M
internal
(V
iso
)
250 VAC
250 VAC
Isolation test voltage
2,500 VDC
Current consumption
• from the backplane bus
• from supply voltage L+
max. 100 mA
max. 150 mA
Power loss of the module
Typ. 2.2 W
Generation of analog values
Measuring principle
Integrating
• Integration/conversion time/resolution (per channel)
programmable
Yes
• Integration time in ms
(1)
10/16.67/20/100
• Basic conversion time in ms
(2)
30/50/60/300
• Additional conversion time for wire-break monitoring
65 ms
• Resolution (including overshoot range)
15 bits + sign
• Interference frequency suppression at interference fre-
quency f1 in Hz
400/60/50/10
Measured value smoothing
none/weak/medium/strong