Siemens S7-400H series CPU

Create Date: 2024-8-30 12:03:23|Source: Xinshida/STEP

In all fields of modern industry, it is required to have a highly automated system that can meet the needs of economy, environmental protection and energy saving, and at the same time, programmable controllers with redundancy and fail-safe functions are aimed at the highest level of control requirements.
Siemens S7-400H series CPU

H (High Reliability) System: The system does not stop by actively switching the aborted unit to the standby unit, and the H system achieves high reliability through the redundancy of components.

F (fail-safe) system: Prevents damage to life, the environment, and raw materials by switching the system that caused the suspension to a safe state (usually shutdown).

FH or HF (Fail-Safe and High Reliability) system: The fault-generating channel is closed to ensure that the system operates without disturbance.

The S7-400H is the high-end series of the S7-400 family from Siemens. Only this series of products can realize the hardware redundancy and activation scheme, and can meet the requirements of fail-safe function and redundancy. Therefore, the S7-400H is widely used in the key equipment of plant automation, especially the DCS and SIS systems for process occupations.

The S7-400H currently includes the classic S7-400H series and the CPU410 series.
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