Application planning
3.5 Failure scenarios
S7-1500R/H redundant system
84
System Manual, 10/2018, A5E41814787-AA
3.5.4
Specific failure scenarios with S7-1500H
3.5.4.1
Failure of both redundancy connections in S7-1500H
≤ 1500
ms apart
Introduction
The following failure scenario describes the effects of a defect in each of the two redundancy
connections in S7-1500H. In this failure scenario, the time between the redundancy
connection failures is ≤
1500 ms.
Failure scenario
①
Primary CPU
②
Backup CPU
③
Two fiber-
optic cables (redundancy connections) → interrupted
④
IO device ET 200SP
⑤
IO device ET 200MP
⑥
PROFINET cable (PROFINET ring)
Figure 3-19 Failure of both redundancy connections
Summary of Contents for Simatic S7-1500H
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