Appendix d- choose correct power supply, Power-sizing chart, Appendix d – Rockwell Automation 1756-XXXX ControlLogix Analog I/O Modules User Manual
Page 359: Choose correct power supply, Appendix
Publication 1756-UM009C-EN-P - December 2010
359
Appendix
D
Choose Correct Power Supply
Power-sizing Chart
You can determine the power that modules contained in a ControlLogix
chassis are consuming to maintain an adequate power supply.
An interactive spreadsheet is available that lets you enter a chassis
configuration and automatically calculates the total power supply
consumption. The total power supply consumption cannot exceed
75 W @ 60 °C (140 °F).
Refer to the configuration spreadsheet in Sizing the ControlLogix Power
Supply,
.
You also can use this worksheet to check power supply consumption. The
5.1 V DC and 24V DC currents are used together to calculate the maximum
backplane power dissipation.
IMPORTANT
You must have a support agreement with Rockwell Automation
to access the Knowledgebase for technical notes and the
power supply configuration spreadsheet.
For more information, contact your local Rockwell Automation
distributor or sales representative.
Slot
Number
Module
Cat. No.
Current @
5.1V DC (mA)
Power
@ 5.1V DC (Watts)
Current
@ 24V DC (mA)
Power
@ 24 V DC (Watts)
0
x 5.1V =
x 24V =
1
x 5.1V =
x 24V =
2
x 5.1V =
x 24V =
3
x 5.1V =
x 24V =
4
x 5.1V =
x 24V =
5
x 5.1V =
x 24V =
6
x 5.1V =
x 24V =
7
x 5.1V =
x 24V =
8
x 5.1V =
x 24V =
9
x 5.1V =
x 24V =
10
x 5.1V =
x 24V =
11
x 5.1V =
x 24V =
12
x 5.1V =
x 24V =
13
x 5.1V =
x 24V =
14
x 5.1V =
x 24V =
15
x 5.1V =
x 24V =
16
x 5.1V =
x 24V =
TOTALS
mA
W
mA
W
The 5.1 V DC current should not exceed: 10 A, 1756-Px72 power supply; 13 A, 1756-Px75 power supply.