Siemens ET 200S Manual page 452

Analog Electronic Modules
Table 12-83 Terminal Assignment of the 2AI I 2/4WIRE High Feature
View
TM-E15S26-A1 and 2AI I 2/4WIRE High Feature
CH0 CH1
M M
0+
1 5
M M
0–
2 6
24 VDC+ 24 VDC+
3 7
24 VDC– 24 VDC–
4 8
A A
AUX1 AUX1
4 8
A A
AUX1 AUX1
3 7
Block Diagram
ET 200S
backplane bus
interface module
L+
P1
P2
1M
Figure 12-13 Block Diagram of the 2AI I 2/4WIRE High Feature
12-96
Terminal Assignment
(Alternative terminal assignment for
2WIRE)
2 conductors
Two-wire measuring transducer
1+
mA
1–
ADC
24 V
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.
MUX
M
ANA
Current limit
Distributed I/O System ET 200S
EWA 4NEB 780 6024-02 07
Remarks
1
2
5
6
3
7
4
8