We have the MTTF (Mean time to failure) value for this product. These values are provided by statistics regarding the experience of the product in industrial area.

The MTTF for the product Tesys T is 700 000 hours. This value is done by test and simulation.

The calculated MTTF for various Tesys T part references are provided below and in attachment.

Surrounding temperature: 60°C			MTTF (in Hours)
		Contr. Power Supply	Modbus	Profibus	DeviceNet	CANopen	Ethernet
	LTMR	24VDC	881924	883203	888920	888920	525956
		100-240VAC	862156	863377	868841	868841	515916
	LTMR+LTME	24VDC	701682	702491	706104	706104	456087
		100-240VAC	703945	704759	708395	708395	454756
Surrounding temperature: 15°C			MTTF (in Hours)
		Contr. Power Supply	Modbus	Profibus	DeviceNet	CANopen	Ethernet
	LTMR	24VDC	2189252	2231027	2259601	2259601	1314890
		100-240VAC	2244059	2287979	2318034	2318034	1289790
	LTMR+LTME	24VDC	1670071	1694272	1710700	1710700	1140217
		100-240VAC	1754072	1780792	1798946	1798946	1136890