Siemens Simatic M7-400 Reference Manual page 295

Technical Specifications of the SM 431; AI 8
Programming package
Associated programming
package
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
in the 80 mV input range
and with thermocouples
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
•
Between M and
ANA
M (U )
internal ISO
Insulation tested with
•
Between bus and L+/M
•
Between bus and analog
section
•
Between bus and chassis
ground
•
Between analog section
and L+/M
•
Between analog section
and chassis ground
•
Between L+/M and chassis
ground
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
As of STEP 7 V 2.0
25 290 210
Approx. 500 g
8
4
Max. 200 m
Max. 50 m
24 VDC (required only
for the supply of
two-wire transmitters)
Yes
max. 50 mA
Yes
Typ. 1.67 mA
Yes
No
Yes
120 VAC
) 120 VAC
75 VDC / 60 VAC
2120 VDC
2120 VDC
500 VDC
707 VDC
2120 VDC
2120 VDC
14 Bit
Current consumption
•
From the backplane bus
•
From the backplane bus L+ Max. 200 mA (with 8
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
•
Additional conversion time
for measuring resistance in
ms
•
Additional conversion time
for open-circuit monitoring
in ms
•
Additional conversion time
for measuring resistance
in ms
•
Resolution including sign
– Smoothing activated
Smoothing of the measured
values
Basic execution time of the
module, in ms (all channels
enabled)
Analog Modules
Max. 600 mA
connected, fully
controlled two-wire
transmitters)
Typ. 3.5 W
Integrative
(Does not go into the
response time)
Yes
60/50
16.7/20
20.1/23.5
40.2/47
4.3/4.3
5.5/5.5
14/14 bit
16/16 bit
Parameters can be
assigned in 4
stages
161/188
5-79