Reliability – Rockwell Automation 1606-XLS240F, -XLS240F-D Power Supply Reference Manual User Manual
Page 11

All parameters are specified at 48V, 5A, 230Vac, 25°C ambient and after a 5 minutes run-in time, unless noted otherwise.
Rockwell Automation Publication 1606-RM045A-EN-P — March 2014
11
Bulletin 1606 Switched Mode Power Supplies
10. Reliability
AC
100V
AC 120V
AC 230V
Lifetime expectancy
*)
57 000h
67 000h
81 000h
at 48V, 5A and 40°C
118 000h
112 000h
118 000h
at 48V, 2.5A and 40°C
161 000h*)
188 000h*)
228 000h*)
at 48V, 5A and 25°C
MTBF
**)
SN 29500, IEC 61709
539 000h
566 000h
606 000h
at 48V, 5A and 40°C
932 000h
979 000h
1 048 000h
at 48V, 5A and 25°C
MTBF
**)
MIL HDBK 217F
342 000h
349 000h
349 000h
at 48V, 5A and 40°C; Ground
Benign GB40
467 000h
478 000h
478 000h
at 48V, 5A and 25°C; Ground
Benign GB25
*) The Lifetime expectancy shown in the table indicates the minimum operating hours (service life) and is determined by the lifetime
expectancy of the built-in electrolytic capacitors. Lifetime expectancy is specified in operational hours and is calculated according to the
capacitor’s manufacturer specification. The manufacturer of the electrolytic capacitors only guarantees a maximum life of up to 15 years
(131 400h). Any number exceeding this value is a calculated theoretical lifetime which can be used to compare devices.
**) MTBF stands for Mean Time Between Failure, which is calculated according to statistical device failures, and indicates reliability of a
device. It is the statistical representation of the likelihood of a unit to fail and does not necessarily represent the life of a product.
The MTBF figure is a statistical representation of the likelihood of a device to fail. A MTBF figure of e.g. 1 000 000h means that
statistically one unit will fail every 100 hours if 10 000 units are installed in the field. However, it is impossible to determine if the failed
unit has been running for 50 000h or only for 100h.