Siemens ET 200S - Page 452

Analog Electronic Modules
12-96
Distributed I/O System ET 200S
EWA 4NEB 780 6024-02 07
Table 12-83Terminal Assignment of the 2AI I 2/4WIRE High Feature
View RemarksTerminal Assignment
M
1–
M
0–
2
3
4
6
7
8
15
M
1+
M
0+
TM-E15S26-A1 and 2AI I 2/4WIRE High Feature
(Alternative terminal assignment for
2WIRE)
24 VDC+24 VDC+
2 conductors
CH0 CH1
mA
24 VDC–24 VDC–
Two-wire measuring transducer
AUX1
A
4
A
3
A
8
A
7
AUX1
AUX1
AUX1
Channel 0: Terminals 1 to A3
Channel 1: Terminals 5 to A7
M+ : Input signal “–”
M– : Connect to 24 VDC–
24 VDC+: Input signal “+”
Two-wire measuring
transducers are supplied by
means of the measuring
circuits.
Mixing two-wire and four-wire
measuring transducers is
permitted.
To support isolation between
the channels, use an external
supply to feed one of the
measuring transducers.
Block Diagram
ADC
M
ANA
24 V
L+
1M
1
2
5
6
7
3
8
4
P1
P2
MUX
Backplane bus
ET 200S
backplane bus
interface module
Current limit
Figure 12-13 Block Diagram of the 2AI I 2/4WIRE High Feature