Block Diagram Of The 4D Namur - Siemens SIMATIC ET 200S Manual

Digital Electronic Modules
Terminal Assignment of a Changeover Contact without Load Resistance
(Mechanical Changeover Contact)
Table 11-15 Terminal Assignment of a Changeover Contact without Load Resistance (Mechanical
Changeover Contact)
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CH0
CH2
DI
0
1
DI
2
2
V
s
3
V
s
4
A
AUX1
4 4
A
AUX1
3
Block diagram
Figure 11-9
11-36
Terminal assignment
TM-E-15S26-A1 and 4DI NAMUR
Example for connection of
CH1
channel 0 and channel 1
CH3
1
DI
1
5
5
DI
3
6
V
3
s
7
V
s
8
A
AUX1
8
A
AUX1
7
ET 200S
backplane bus
interface connection

Block diagram of the 4D NAMUR

Remarks
Changeover contact 1:
Terminals 1, 5 and 3
Changeover contact 2:
Terminals 2, 6 and 7
DI: Input signal
Vs: Encoder supply
µC
Multiplexer,
comparator
5 V
8.2 V
ET 200S Distributed I/O System
EWA-4NEB 780602402-12
Input wiring
1
2
Inputs
5
6
3
4
V
s
7
8