System overview
5.1 What is the S7-1500R/H redundant system?
S7-1500R/H redundant system
System Manual, 01/2024, A5E41814787-AF
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Example 3: Avoiding equipment and material damage
Automation task
A steel works needs a matching automation solution to control a blast furnace for the steel
production.
Feature
Failures, especially in the process industry, can result in damages to the system, workpieces
or material. In a steelworks, there is a danger of the pig iron cooling if the process is
interrupted. The pig iron then cannot be used for the production of steel. The automation
solution must ensure that the plant continues to run if a CPU fails and that the material is not
damaged.
Solution
The S7-1500R redundant system controls the blast furnace. The distributed automation
components of the redundant system control the temperature, volume and pressure
parameters.
Figure 5-3 Example: Blast furnace
Benefits
The S7-1500R redundant system compensates for the possible failure of a CPU or redundant
connection. You do not have to interrupt the smelting process when replacing a CPU while
the plant is running. Uninterrupted plant operation avoids high restart and material costs.
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