Siemens Simatic M7-400 Reference Manual page 318

Analog Modules
Technical Specifications of the SM 431; AI 16 x 13 Bit
Dimensions and Weight
Dimensions W H D
(in millimeters)
Weight
Data for Specific Module
Number of inputs
•
Shielded
Voltages, Currents, Potentials
Rated load voltage L+
•
Reverse polarity protection
Power supply of the
transmitters
•
Supply current
•
Short-circuit proof
Constant measured current for
resistance-type sensor
Isolation
•
Between channels and
backplane bus
•
Between the channels
•
Between channels and
load voltage L+
Permitted potential difference
•
Between inputs and M
ANA
(U )
CM
•
Between the inputs (E )
CM
Insulation tested with
•
Between bus and chassis
ground
Current consumption
•
From the backplane bus
•
From load voltage L+
(with 16 connected, fully
controlled two-wire
transmitters)
Power dissipation of the
module
Analog Value Generation
Measuring principle
Integration time/conversion
time/resolution (per channel)
•
Parameters can be
assigned
•
Interference voltage
suppression f1 in Hz
•
Integration time in
milliseconds
•
Basic conversion time in
ms
•
Resolution including sign
5-102
Smoothing of the measured
values
25 290 210
Basic execution time of the
module, in ms (all channels
Approx. 500 g
enabled)
16
Interference voltage suppression for f = nx (f1 "1%),
Max. 200 m
(f1 = interference frequency) n = 1, 2, ...
•
24 VDC (only required
for the supply of 2-wire
transmitters)
•
Yes
Crosstalk between the inputs
Max. 50 mA
Yes Operational limit (in the entire temperature range, with
reference to the input range)
Typ. 1.67 mA
•
No
•
No
No
Basic error (operational limit at 25
2 VDC/2 VAC
range)
SS
•
2 VDC/2 VAC
SS
500 VDC
•
Max. 100 mA
Max. 400 mA
Temperature error (with
reference to the input range)
Linearity error (with reference
to the input range)
Typ. 2 W
Repeat accuracy (in the steady
state at 25
input range)
Integrative
(Does not go into the
Interrupts
response time)
Diagnostic functions
Yes
Substitute value can be applied
60/50
50/60
55/65
13 bits
S7-400, M7-400 Programmable Controllers Module Specifications
Not possible
880/1040
Suppression of Interference, Limits of Error
Common-mode > 86 dB
interference
(U < 2 V)
CM
Series-mode interference > 60 dB
(peak value of interference
< rated value of input
range)
> 50 dB
Voltage input
" 1 V " 0.65%
–
" 10 V " 0.65%
–
" 1 %
– 1 V to 5 V
Current input
" 20 mA " 0.65%
–
" 0.65%
– 4 mA to 20 mA
Voltage input
" 1 V " 0.25%
–
" 10 V " 0.25%
–
" 0.5%
– 1 V to 5 V
Current input
" 20 mA " 0.25%
–
" 0.25%
– 4 mA to 20 mA
" 0.01%
" 0.05%
" 0.01%
°
C, referred to the
Status, Interrupts, Diagnostics
None
None
No
°
C, referred to input
A5E00069467-07