Rockwell Automation Publication 1606-RM056A-EN-P - December 2016
13
Basic Power Supply 10 A
Lifetime Expectancy and
Mean Time Between Failure
(MTBF)
Functional Diagram
Figure 16 - Functional Diagram
Attribute
AC 100V
AC 120V
AC 230V
Notes
Lifetime expectancy
(1)
89 000 h
93 000 h
103 000 h
at 24V, 5 A and 40 °C (158 °F)
252 000 h
262 000 h
291 000 h
at 24V, 5 A and 25 °C (77 °F)
47 000 h
55 000 h
74 000 h
at 24V, 10 A and 40 °C (158 °F)
133 000 h
156 000 h
209 000 h
at 24V, 10 A and 25 °C (77 °F)
MTBF
(2)
SN 29500,
IEC 61709
pending
at 24V, 10 A and 40 °C (104 °F)
at 24V, 10 A and 25 °C (77 °F)
MIL HDBK 217 F
at 24V, 10 A and 40 °C (104 °F) ; Ground
Benign GB40
at 24V, 10 A and 25 °C (77 °F) ; Ground
Benign GB25
at 24V, 10 A and 40 °C (104 °F) ; Ground
Fixed GF40
at 24V, 10 A and 25 °C (77 °F) ; Ground
Fixed GF25
(1) The Lifetime expectancy that is 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 (131 400 h). Any number exceeding this value is a calculated theoretical lifetime that can be used to compare
devices.
(2) 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 for example, 1 000 000 h means
that statistically one unit fails every 100 hours if 10 000 units are installed in the field. However, it cannot be determined if the
failed unit has been running for 50 000 h or only for 100 h.
+
+
-
-
Output
Over-
Voltage
Protection
PFC
Converter
Output
Voltage
Regulator
Power
Converter
Output
Filter
Temper-
ature
Shut-
down
Input Fuse
Input Filter
Input Rectifier
Inrush Current Limiter
V
OUT
L
N
DC-ok
Contact
DC-ok
LED
DC-ok
Relay