Failure And Replacement Of Components During Operation - Siemens SIMATIC S7-400H System Manual

Failure and replacement of components during
operation
13.1

Failure and replacement of components during operation

One factor that is crucial to the uninterrupted operation of the fault-tolerant PLC is the
replacement of failed components in ongoing operation (run mode). Quick repairs will
recover fault-tolerant redundancy.
We will show you in the sections that follow how simple and fast it can be to repair and
replace components in the S7-400H. Also refer to the tips in the corresponding sections of
the installation manual,
S7-400H
System Manual, 09/2007, A5E00267695-03
S7-400 Programmable Controllers, Hardware and Installation
13
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