Reference Manual Instruction Manual

All parameters are specified at 24V, 2.5A, 230Vac input, 25ªC ambient and after a 5 minutes run-in time unless noted otherwise.
12 Rockwell Automation Publication 1606-RM032A-EN-P — April 2014
Bulletin 1606 Switched Mode Power Supplies
13. Lifetime Expectancy and MTBF
3AC 400V 3AC 480V
Calculated lifetime expectancy
*)
314 000h
*)
294 000h
*)
at 48V, 10A and 25°C
111 000h 104 000h at 48V, 10A and 40°C
179 000h
*)
174 000h
*)
at 48V, 20A and 25°C
63 000h 62 000h at 48V, 20A and 40°C
MTBF
**)
SN 29500, IEC 61709 375 000h 369 000h at 48V, 20A and 40°C
685 000h 678 000h at 48V, 20A and 25°C
MTBF
**)
MIL HDBK 217F 158 000h 157 000h at 48V, 20A and 40°C; Ground Benign GB40
211 000h 210 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 specied in operational hours and is calculated according
to the capacitor’s manufacturer specication. 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 gure is a statistical representation of the likelihood of a device to fail. A MTBF gure of e.g. 1 000 000h means that
statistically one unit will fail every 100 hours if 10 000 units are installed in the eld. 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 Fuses
Input Filter
Input Rectier
Inrush Limiter
Transient Filter
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
L2
L3
L1
Single /
Parallel
Shut-
down
Input
Shut-
down
13
14
15
16
Event Datalogger