The S7-400 is available in three versions:

S7-400

• The power PLC for the mid to high-end performance ranges
• The solution for even the most demanding tasks
• With a comprehensive range of modules and performance-graded CPUs for optimal adaptation to the automation task
• Flexible in use through simple implementation of distributed structures and extensive communications capabilities
• User-friendly handling and uncomplicated design without a fan
• Can be expanded without problems when the tasks increase

S7-400H

• Fault-tolerant automation system with redundant design
• For applications with high fail-safety requirements
  Processes with high restart costs, expensive downtimes, little supervision, and few maintenance options.
• Redundant central functions
• Increases availability of I/O: Switched I/O configuration
• Also possible to use I/Os with standard availability: Single-sided configuration
• Hot stand-by: Automatic reaction-free switching to the standby unit in the event of a fault
• Configuration with two separate or one divided central rack
• Connection of switched I/O via redundant PROFIBUS DP

S7-400F/FH

• Failsafe automation system for systems with increased safety requirements
• If required, also fault tolerant through redundant design
• Without additional wiring of the safety-related I/O:
  Safety-relevant communication via PROFIBUS DP with PROFIsafe profile
• Based on S7-400H and ET 200M with safety modules
• Standard modules for non-safety-related applications can also be used in the automation system

  For More Detailed Information, please select from the links below;

  	Manuals / Operating instructions
  	Approvals / Certificates
  	Software Downloads
  	Software Updates
  	Catalog ST 70

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