Programmable Controllers Module Specifications Reference Manual

Analog Modules
5-133
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
Technical Specifications of the SM 431; AI 8 16 Bit
Dimensions and Weight
Dimensions W H D
(in millimeters)
25 290 210
Weight Approx. 650 g
Data for Specific Module
Number of inputs 8
Length of cable
• Shielded 200 m
Voltages, Currents, Potentials
Isolation
• Between channels and
backplane bus
Yes
• Between the channels Yes
Permitted potential difference
• Between the inputs (U
CM
) 120 VAC
• Between M
ANA
and
M
internal
(U
ISO
)
120 VAC
Insulation tested with 1500 VAC
Current consumption
• From the backplane bus Max. 1200 mA
Power dissipation of the
module
Typ. 4.6 W
Analog Value Generation
Measuring principle Integrative
Integration time/conversion
time/resolution (per
channel)
(Does not go into the
response time)
• Parameters can be
assigned
Yes
• Integration time in
milliseconds
2.5 16.7 20 100
• Basic conversion time
including integration
time in milliseconds
10 16.7 20 100
• Resolution in bits (incl.
overrange)
16 bits
• Noise suppression for
frequency f1 in Hz
400 60 50 10
• Basic execution time of
the module, in ms (all
channels enabled)
10 16.7 20 100
Smoothing of the measured
values
Parameters can be
assigned in 4
stages
Suppression of Interference, Limits of Error
Interference voltage suppression for f = n (f1 " 1%),
(f1 = interference frequency) n= 1.2 ...
• Common-mode
interference
(U
CM
< 2.5 V)
> 130 dB
• Series-mode noise
(peak value of noise
< nominal value of input
range)
> 80 dB
Crosstalk between the
inputs
> 130 dB