Terminal Assignment For Redundant Supply Of Encoders Of Sm 321; Di 16 X Vdc; Terminal Assignment For Resistive Circuit Of The Encoder Of The Sm 321; Di 16 X 24 Vdc - Siemens SIMATIC S7-300 Reference Manual

Digital Modules
Terminal assignment for redundant supply of encoders
The figure below shows how encoder can additionally be supplied by means of Vs
with a redundant voltage source – for example, via another module).
Figure 3-7
Terminal assignment for resistive circuit of the encoder
In order to detect a broken wire, it is necessary to wire the encoder contact with a
resistor.
Figure 3-8
3-24
Short-circuit-
proof driver
Digital input
module
Terminal assignment for redundant supply of encoders of SM 321;
DI 16 x VDC 24
L +/ V
s
15 kW ... 18 kW
Terminal assignment for resistive circuit of the encoder of the SM 321;
DI 16 x 24 VDC
L+
1 L+
Vs
2 L+
M
±
to the sensors
E x.x
Programmable Logic Controllers S7-300 Module Data
A5E00105505-03