Block Diagram Of The 2Ai Rtd High Feature - Siemens SIMATIC ET 200S Manual

Block diagram
ET 200S
backplane bus
connection
P1
P2
Figure 12-17 Block diagram of the 2AI RTD High Feature
Technical data
Dimensions and weight
Dimensions W x H x D
(mm)
Weight
Module-specific data
Supports clock synchro-
nized mode
Number of inputs
Cable length
•
shielded
Voltages, currents, electrical potentials
Rated load voltage L+ (from
power module)
•
Polarity reversal
protection
Transducer power supply
•
Constant power supply
for resistive sensors
•
Short-circuit protection
ET 200S Distributed I/O System
EWA-4NEB 780602402-12
interface
24V
L+
1M
15 x 81 x 52
Approx. 40 g
No
2
max. 200 m (164 ft)
24 VDC
Yes
Yes
Approx. 1.25 mA
Yes
Analog Electronic Modules
MUX
ADC
M
ANA
MUX
Electrical isolation
•
Between channels and
backplane bus
•
Between channels and
load voltage L+
•
Between the channels
Permitted potential
difference
•
Between M and the
ANA
central ground point
(U )
ISO
Isolation tested
Current consumption
•
with load voltage L+
Power loss of the module
Status, interrupts, diagnostics
Diagnostic functions
•
Group error
•
Reading of diagnostics
functions
1
2
5
6
3
7
4
8
Yes
Yes
No
75 VDC / 60 VAC
500 VDC
max. 30 mA
Typical 0.6 W
red LED "SF"
Yes
12-85