Reference Manual Instruction Manual

All parameters are specified at 24V, 40A, 230Vac input, 25°C ambient and after a 5 minutes run-in time, unless noted otherwise.
Rockwell Automation Publication 1606-RM029A-EN-P — April 2014 11
Bulletin 1606 Switched Mode Power Supplies
12. Efciency and Power Losses
AC 230V
Efciency typ. 94.6% at 24V, 40A
Average efciency
*)
typ. 93.8% 25% at 10A, 25% at 20A, 25% at 30A. 25% at 40A
Power losses typ. 3.2W with activated shut-down
typ. 12.0W at 24V, 0A (no load)
typ. 29.6W at 24V, 20A (half load)
typ. 54.8W at 24V, 40A (full load)
*) The average efciency is an assumption for a typical application where the power supply is loaded with 25% of the nominal load for 25%
of the time, 50% of the nominal load for another 25% of the time, 75% of the nominal load for another 25% of the time and with 100%
of the nominal load for the rest of the time.
Fig. 12-1 Efciency vs. output current at 24V,
typ.
Fig. 12-2 Losses vs. output current at 24V,
typ.
Efciency
8 1216202428323640A
91
92
93
Output Current
94
95%
Power Losses
0 4 8 12 16 20 24 28 40A
10
0
30
40
50
60W
32 36
20
Output Current
Fig. 12-3 Efciency vs. input voltage at 24V,
40A, typ.
Fig. 12-4 Losses vs. input voltage at 24V, 40A,
typ.
Efciency
170 190
210
230 250 270Vac
92
93
94
Input Voltage
95%
Power Losses
30
35
40
45
50
55
60W
170 190
210
230 250 270Vac
Input Voltage