Temperature derating, With user +24v current draw at 0 amps, With user +24v current draw at 0.2 amps – Rockwell Automation 1769-PB4 Compact I/O Expansion Power Supplies Manuel d'utilisation
Page 25
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Compact I/O Expansion Power Supplies 25
Publication 1769-IN028B-EN-P - October 2008
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 Output Derating
0.875
+5V Bus Load (Amp
s)
With User +24V Current Draw at 0 Amps
+24V Bus Load (Amps)
2.0
1.0
0.5
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.4
60 °C
55 °C
1.5
0.0
44726
With User +24V Current Draw at 0.2 Amps
+24V Bus Load (Amps)
+5V
Bus L
oad (Amps)
2.0
1.5
1.0
0.5
0.0
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
0.675
0.85
1.25
0.45
55 °C
60 °C
44727
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