Rockwell Automation 1606-XLS960FE Power Supply Reference Manual - Manual (Page 12)

All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless noted otherwise.
12 Rockwell Automation Publication 1606-RM018A-EN-P — February 2014
Bulletin 1606 Switched Mode Power Supplies
13. Lifetime Expectancy and MTBF
AC 230V
Calculated lifetime expectancy *) 345 000h *) at 48V, 10A and 25°C
122 000h at 48V, 10A and 40°C
184 000h *) at 48V, 20A and 25°C
65 000h at 48V, 20A and 40°C
MTBF **) SN 29500, IEC 61709 392 000h at 48V, 20A and 40°C
693 000h at 48V, 20A and 25°C
MTBF **) MIL HDBK 217F 158 000h at 48V, 20A and 40°C; Ground Benign GB40
214 000h at 48V, 20A and 25°C; Ground Benign GB25
*) The calculated 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 can not be determined if the failed unit
has been running for 50 000h or only for 100h.
14. Functional Diagram
Fig. 14-1 Functional diagram
+
+
-
-
V
OUT
DC-ok
Contact
Output
Over-
Voltage
Protection
PFC
Converter
Input Fuse
Input Filter
Input Rectifier
Inrush Limiter
Output
Voltage
Regulator
Power
Converter
Output
Filter
DC ok
Relay
Output
Voltage
Monitor
Output
Power
Manager
Temper-
ature
Shut-
down
Overload
LED
DC-ok
LED
N
L
Single /
Parallel
Shut-
down
13
14
15
16
Event Datalogger
Shut-down
Input