Temperature Derating - Allen-Bradley 1769-PA2K Installation Instructions Manual

Compact I/O Expansion Power Supplies

Temperature Derating

The following graphs indicate how much current can be drawn from the power supply at the
indicated case temperature without damaging it.
1769-PA2, 1769-PA2K Output Derating
2.0
1.5
1.0
0.5
0.0
0.0
2.0
1.5
1.0
0.5
0.0
0.0
24
With User +24V Current Draw at 0 Amps
0.1 0.2 0.3 0.4
+24V Bus Load (Amps)
With User +24V Current Draw at 0.2 Amps
60 °C
0.1 0.2 0.3 0.4
+24V Bus Load (Amps)
Rockwell Automation Publication 1769-IN028I-EN-P - July 2020
60 °C
0.5 0.6 0.7
0.675
55 °C
0.5 0.6 0.7
0.875
55 °C
1.4
0.8 0.9 1.0
0.85
1.25
0.45
0.8 0.9 1.0