Siemens SIMATIC ET 200SP System Manual

System overview
3.2 What are fail-safe automation systems and fail-safe modules?
Distributed I/O system
System Manual, 09/2019, A5E03576849-AJ
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3.2 What are fail-safe automation systems and fail-safe modules?
Fail-safe automation systems
Fail-safe automation systems (F-systems) are used in systems with higher safety
requirements. F-systems control processes and ensure that they are in a safe state
immediately after shutdown. In other words, F-systems control processes in which an
immediate shutdown does not endanger persons or the environment.
Safety Integrated
Safety Integrated is the integrated safety concept for automation and drive technology from
Siemens.
Proven technologies and systems from automation technology are used for safety systems.
Safety Integrated includes the complete safety sequence, ranging from sensor, actuator and
fail-safe modules right through to the controller, including safety-related communication via
standard fieldbuses. Drives and controllers handle safety tasks in addition to their actual
functions.
Fail-safe modules
The key difference between fail-safe modules (F-modules) and standard modules is that they
have an internal two-channel design. This means the two integrated processors monitor
each other, automatically test the input and output circuits, and switch the fail-safe module to
a safe state in the event of a fault.
The F-CPU communicates with a fail-safe module via the safety-related PROFIsafe bus
profile.
Fail-safe motor starters
Fail-safe motor starters enable safety-related tripping of motor loads. Fail-safe motor starters
are not PROFIsafe nodes. Motor starters operate together with the fail-safe modules of the
ET 200SP system.
Area of application of ET 200SP with fail-safe I/O modules
By using the ET 200SP distributed I/O system with fail-safe I/O modules, you are replacing
conventional safety engineering configurations. This includes the replacement of switching
devices for emergency STOP, protective door monitors, two-hand operation, etc.

Siemens SIMATIC ET 200SP Specifications

General

System Type	Distributed I/O System
Mounting	DIN Rail
Communication Protocol	PROFINET, PROFIBUS
IP Rating	IP20
Category	I/O Systems
Supply Voltage	24 V DC
Modularity	Yes
Hot Swapping	Yes
Storage Temperature	-40°C to +70°C
Digital Inputs	Yes
Digital Outputs	Yes
Analog Inputs	Yes
Analog Outputs	Yes
Communication Interface	PROFINET, PROFIBUS
Number of Modules	Up to 64
Relative Humidity	5 to 95% (non-condensing)
Operating Temperature	-25°C to +60°C