ControlLogix Power Supplies
13
Publication 1756-IN613A-EN-P - December 2008
To use the graphs, complete this procedure.
1. Add all of the backplane power, that is, Watts, for all of the modules in the chassis.
2. Find the number from step 1 on the vertical axis.
3. Follow that value to the right until it intersects the line on the graph.
4. Find the associated input-power rating consumed by the power supply on the
horizontal axis.
For example, if the power consumption of all of the modules in the chassis is 30 Watts, a
1756-PH75 series B power supply consumes approximately 42 Watts of Real Power.
Real Power (Watts)
1756-PH75 Series B, 1756-PC75 Series B
43618
Backplane Power
Load (Watts)
