SIEMENS, a German company, attaches great importance to the reliability and safety of its products. The Siemens S7-400FH is a fault-tolerant redundant automation system suitable for production equipment that requires high safety requirements; Once the process safety interlock conditions are met or any internal system failure occurs, S7-400FH immediately enters a safe working state, maintaining a safe working mode to ensure that operators, equipment, environment, and production processes are in a safe state.

Product Features

The Siemens S7-400FH system is a safety and redundant automation system developed by Siemens AG in Germany, known as the Safety Instrumented System (SIS), which is suitable for equipment that requires high safety requirements.

The Siemens S7-400FH system can be customized according to specific application requirements: scalable performance, excellent redundancy, flexible configuration, and easy integration of safety functions. Integrated PROFINET interface, can redundantly connect I/O devices, or connect I/O devices through PROFIBUS to achieve factory level communication. Regardless of the application, the Siemens S7-400FH system can be conveniently and effectively programmed and configured in the familiar STEP7 engineering environment.

>When a fault occurs, it can switch without disturbance

>Integrated fault detection function; Detecting faults in advance to avoid affecting the production process

>Online maintenance allows for the replacement of faulty components during factory operation

>Configuration changes allow for factory expansion during operation

>Automatic event synchronization

>High availability communication

>Redundant connection of I/O devices

Product Application

According to statistics, all automation components (whether mechanical, electromechanical, or electronic) will experience malfunctions. Therefore, factory maintenance and renovation are also essential; In practical applications, expecting 100% availability is unrealistic. By using Siemens SIMATIC S7-400FH, the probability of production failures can be greatly reduced and productivity can be improved.

>Prevent shutdown caused by controller malfunction. Mainly used in production, energy, water supply systems, airport navigation lighting, marshalling yard systems and other fields.

>To avoid high repair costs caused by data loss due to factory malfunctions. Mainly used in the fields of luggage handling, elevated warehouses, tracking and tracing.

>Protect the factory, workpieces, and materials when the factory or machine is shut down. Mainly used in fields such as furnaces, semiconductors, and ships.

>Unsupervised and maintenance personnel can also ensure normal operation. Mainly used in fields such as sewage treatment plants, tunnels, ship locks, building systems, etc.

Product software/hardware platform and efficient engineering configuration

As in standard systems, SIMATIC S7-400H can be programmed using all STEP 7 programming languages. It is easy to migrate programs from standard systems to redundant systems, and vice versa. When the program is loaded, it will automatically transfer to two redundant controllers. By using STEP 7, specific redundant functions and configurations can be parameterized.

Excellent diagnostic and module replacement advantages

By utilizing the integrated self diagnostic function, the system can detect faults and send signals in advance, avoiding the impact of faults on the production process. This can selectively replace faulty components and accelerate the repair process. All components can be hot plugged during system operation. After replacing a CPU, all current programs and data can be automatically reloaded.

Even during system operation, programs can be modified (such as modifying and reloading program blocks), configurations can be changed (such as adding or removing DP slaves or modules), and CPU memory allocation can be altered.

Advanced redundant components

The synchronization module of S7-400 FH CPU is divided into two types, one is used for a 10m long FOC patch fiber, and the other is used for

10km long single-mode full duplex LC/LC fiber (9/125 μ); The synchronous optical fibers of redundant systems are divided into four types: 1m, 2m, 10m, and 10km. The synchronization speed reaches 400Mbps.

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