Table 13- 5 Analog Input Modules And Encoders - Siemens SIMATIC S7-400H System Manual

Redundant encoders <-> non-redundant encoders
The table below shows you which analog input modules you can operate in redundant mode
with redundant or non-redundant encoders:
Table 13- 5
Module
6ES7 431–7QH00–0AB0
6ES7 336–1HE00–0AB0
6ES7 331–7KF02–0AB0
6ES7 331–7NF00–0AB0
6ES7 331–7RD00–0AB0
Redundant analog output modules
You implement fault-tolerant control of a final controlling element by wiring two outputs of two
analog output modules in parallel (1-out-of-2 structure).
Figure 13-12 Fault-tolerant analog output modules in 1-out-of-2 configuration
The following applies to the wiring of analog output modules:
● Wire the ground connections in a star structure to avoid output errors (limited common-
Information on connecting with diodes
● Suitable diodes are diodes with U
● A separate load supply is advisable. There must be equipotential bonding between both
S7-400H
System Manual, 03/2012, A5E00267695-11
Analog input modules and encoders
mode suppression of the analog output module).
1N4003 ... 1N4007).
load supplies.
13.4 Connecting redundant I/O to the PROFIBUS DP interface
Redundant encoders
X
X
X
X
X
>=200 V and I_
_r
Using I/Os in S7–400H
Non-redundant encoders
X
-
X
X
X
>= 1 A (e.g. types from the series
F
203