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Siemens AG
Entry type: FAQ Entry ID: 75865550, Entry date: 06/28/2013
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How the MTBF for SIMATIC IPCs is be calculated?

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Description
MTBF = Mean Time Between Failures = mean time between two consecutive failures of a component.

This value is a statistical value and for IPCs it is calculated on the basis of the failure rates of all the components used.

SIMATIC IPCs are configurable products. The MTBF depends on the configuration in each case. You must calculate it separately for each case.

You need the following information to determine the MTBF for SIMATIC IPCs.
 

No. Information Example
1 Complete order number 6AG4104-2DP32-2FX0
2 Ambient temperature 25°C or 40°C, 45°C or 50°C depending on the device
3 Operating mode 8h/day or 24h/day
Table 01

For additional support with the calculations please contact Pre-Sales Support at:
mailto: presales-ipc.i-ia@siemens.com

Additional Information
More information about the MTBFs of SIMATIC products is available in Entry ID 16818490.

Security information
In order to protect technical infrastructures, systems, machines and networks against cyber threats, it is necessary to implement – and continuously maintain – a holistic, state-of-the-art IT security concept. Siemens’ products and solutions constitute one element of such a concept. For more information about cyber security, please visit
https://www.siemens.com/cybersecurity#Ouraspiration.