Siemens SIMATIC PCS 7 CPU 410-5H User Manual

Characteristic values of redundant automation systems
A.2 Comparison of MTBF for selected configurations
CPU 410-5H Process Automation
328 System Manual, 09/2014, A5E31622160-AB
A.2
Comparison of MTBF for selected configurations
The following sections compare systems with a centralized and distributed I/Os.
The following framework conditions are set for the calculation.
● MDT (Mean Down Time) 4 hours
● Ambient temperature 40 degrees
● Buffer voltage is safeguarded
A.2.1
System configurations with redundant CPU 410-5H
The following system with one CPU (e.g., CPU 410-5H PN/DP) in stand-alone operation
serves as the basis for calculating a reference factor that defines the multiple of the system
MTBF of other systems with centralized I/O compared with the base line.
Fault-tolerant CPU in stand-alone operation
Fault-tolerant CPU 410-5H in stand-alone mode
Factor
1

Siemens SIMATIC PCS 7 CPU 410-5H Specifications

General

Brand	Siemens
Model	SIMATIC PCS 7 CPU 410-5H
Category	Controller
Language	English