Technical specifications for SM 431; AI 8 x 16 bit
Dimensions and weight
Dimensions W x H x D (in mm)
25 x 290 x 210
Weight
ca. 650 g
Module-specific data
Number of inputs
8
Cable length
● Shielded
200 m
Voltage, current and potential
Electrical isolation
● Between channels and backplane bus
Yes
● Between channels
Yes
In groups of
1
Permissible potential difference
● between the inputs (U
CM
)
60 V DC/30 V AC (SELV)
● Between M
ANA
and M
intern
(U
ISO
)
60 V DC/30 V AC (SELV)
Insulation tested at
1500 V DC
Current consumption
● From backplane bus (5 V)
max. 1200 mA
Module power loss
typical 4.6 W
Formation of analog values
Measuring principle
Integrating
Integration time/conversion time/resolution (per chan‐
nel)
● Configurable
Yes
● Integration time in ms
2.5 16.7 20 100
● Basic conversion time in ms
10 16.7 20 100
● Resolution, including sign
16 bits
● Interference voltage suppression
● for interfering frequency f1 in Hz
400 60 50 10
● Measured value smoothing
Parameters can be assigned in 4 stages
● Basic response time of the module (all channels
enabled)
40 67 80 400
Noise suppression, error limits
Noise suppression for f = nx(fl ± 1%), (f1 = interfering frequency) n = 1, 2, ...
● Common mode interference (U
cm
< 120 V)
Current, thermocouple and voltage ranges < 2.5 V
> 120 dB
Voltage ranges ≥2.5 V
> 95 dB
Crosstalk between inputs (U
cm
< 120 V)
Current, thermocouple and voltage ranges ≥ 2.5 V
> 120 dB
Voltage range ≥ 2.5 V
> 95 dB
● Series-mode interference (peak value of
interference < rated value of input range)
> 80 dB
Analog modules
5.25 Analog input module SM 431; AI 8 x 16 Bit (6ES7431-7KF00-0AB0)
S7-400 Automation System Module Data
306
Reference Manual, Ausgabe 11/2016, A5E00850736-08