Siemens CPU 410-5H Process Automation User Manual

I/O configuration variants
4.2 Fail-safe operation
CPU 410-5H Process Automation/CPU 410 SMART
50 System Manual, 10/2013, A5E32631667-AA
All of the components contribute to the functional safety of the system, in order, when a
dangerous event occurs, to put the system into a safe state or to keep it in a safe state.
Safety of fail-safe SIMATIC Safety Integrated systems
For SIMATIC Safety Integrated systems, the evaluation unit consists, for example, of fail-
safe single-channel CPUs and fail-safe dual-channel I/O modules. The fail-safe
communications take place via the safety-related PROFIsafe profile.
Functions of a fail-safe CPU
A fail-safe CPU has the following functions:
● Comprehensive self-tests and self-diagnostics check the fail-safe state of the CPU.
● Simultaneous execution of standard and safety programs on one CPU. When there are
changes to the standard user program, there are no unwanted effects on the safety
program.
Fail-safe I/O modules (F-modules)
F-modules have all of the required hardware and software components for safe processing
in accordance with the required safety class. This includes wire tests for short-circuit and
cross-circuit. You only program the user safety functions.
Safety-related input and output signals form the interface to the process. This enables, for
example, direct connection of single-channel and two-channel I/O signals from devices such
as EMERGENCY STOP buttons or light barriers.
Safety-related communication with PROFIsafe profile
PROFIsafe was the first communication standard according to the IEC 61508 safety
standard that permits both standard and safety-related communication on one bus line. This
not only results in an enormous savings potential with regard to cabling and part variety, but
also the advantage of retrofit ability.

Siemens CPU 410-5H Process Automation Specifications

General

Brand	Siemens
Model	CPU 410-5H Process Automation
Category	Controller
Language	English