Siemens Simatic M7-400 Reference Manual page 341

Technical Specifications of the SM 431; AI 8
Dimensions and Weight
Dimensions W H D
(in millimeters)
Weight
Data for Specific Module
Number of inputs
•
For resistance-type sensor
Length of cable
•
Shielded
Voltages, Currents, Potentials
Constant current for
resistance-type sensor
Isolation
•
Between channels and
backplane bus
Permitted potential difference
•
Between M and
ANA
M (U )
internal ISO
Insulation tested with
Current consumption
•
From the backplane bus
Power dissipation of the
module
Analog Value Generation
Measuring principle
Integration/conversion time/
resolution (per channel)
•
Parameterizable
•
Basic conversion time in
ms
•
Additional conversion time
for measuring resistance,
in ms
•
Resolution including sign
•
Noise suppression
for interference frequency
f1 in Hz
Smoothing of the measured
values
Basic response time of module
(all channels enabled)
Suppression of interference, Limits of Error
Noise suppression for f = n
(f1 = interference frequency) n = 1, 2, etc.
•
Common-mode
interference (U < 120V)
CM
•
Series-mode interference
(peak value of interference
< rated value of the input
range)
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
25 290 210
Approx. 650 g
8
4
Max. 200 m
Max. 1 mA
Yes
120 VAC
1500 VAC
Max. 650 mA
Typ. 3.3 W
Integrative
(Does not go into the
response time)
Yes
22/25
Max. 200
16/16 bit
60/50
Parameters can be
assigned in 4 stages
22/25 ms
(f1 "1%),
> 100 dB
> 50 dB
RTD 16 Bit
Crosstalk between the inputs
Operational limit (over entire temperature range, referred
to 0 to 60 _C input range)
•
RTD input
Basic error (operational limit at 25
range)
•
RTD input
Temperature error (with
reference to the input range)
Linearity error (with reference
to the input range)
Repeat accuracy (in the steady
°
state at 25 C, referred to the
input range)
Status, Interrupts, Diagnostics
Interrupts
•
Hardware interrupt when
limit has been exceeded
•
Diagnostic Interrupt
Diagnostic functions
•
Group error display
– For internal fault
– For external fault
•
Diagnostic information can
be displayed
Data for Selecting a Sensor
Input range (rated values) input
resistance
•
Resistance thermometer
•
Maximum input voltage for
voltage input (destruction
limit)
Connection of the sensor
•
For measuring resistance
With three-conductor
terminal
With four-conductor
terminal
Characteristic linearization
•
For resistance
thermometer
Unit for temperature
measurement
Analog Modules
> 70 dB
" 1.0 °
C
°
C, referred to input
" 0.5 °
C
" 0.007%/K
" 0.2 °
C
" 0.2 °
C
Parameters can be
assigned
Parameters can be
assigned
Parameters can be
assigned
Red LED (INTF)
Red LED (EXTF)
Possible
Pt 100, Pt 200, Pt 500,
Pt 1000, Ni 100,
Ni 1000
35 V continuous;
75 V for max. 1 s
(duty factor 1:20)
Possible
Possible
Pt 100,0,00385 to DIN
IEC 751
Ni 100, 0,00618 to DIN
43760
Degrees Celsius;
degrees Fahrenheit
5-125