90 Rockwell Automation Publication 1769-UM022C-EN-P - June 2018
Chapter 6 Add and Configure Standard I/O Modules
Calculate Power Consumption in Single Bank
Use this table to calculate power consumption in one bank.
Calculate Power Consumption in an Additional Bank
Use Tab l e 1 2 to calculate power consumption in an extra bank.
IMPORTANT One bank requires the Compact GuardLogix 5370 controllers to reside in the
left-most slot. At a minimum, you must calculate the power consumption of
the controller on the left side of the power supply.
If more modules are installed on the left side of the power supply, you must
also calculate the power consumption for those modules.
If more modules are installed to the right of the power supply, you must
calculate the power consumption for that side separately.
Table 11 - Module Power Consumption Calculation for a Local Bank
Side of Power
Supply Device Cat. No.
Number of
Modules
(3)
Module Current Requirements
Calculated Current =
(Number of Modules) x (Module
Current Requirements)
at 5V DC (in mA) at 24V DC (in mA) at 5V DC (in mA) at 24V DC (in mA)
Left - Required 1769-L30ERMS
1769-L33ERMS
1769-L33ERMSK
1769-L36ERMS
1769-L37ERMS
1769-L38ERMS
1 500 225 500 225
Left - Optional I/O Module-specific Up to 3 Module-specific Module-specific
Total Current Required
(2)
:
Right I/O Module-specific
IMPORTANT: Insert a separate row in this
calculation for each I/O module.
Up to 8 Module-specific Module-specific
Total Current Required
(2)
:
Total Current Required for Single Bank if Modules Are Installed on Both Sides of the Power Supply
(1)
:
(1) This number must not exceed the power supply current capacity for the bank.
(2) This number must not exceed the power supply current capacity for this side of the bank.
(3) In the local bank, you can only install up to three modules to the left of the power supply because the Compact GuardLogix 5370 controllers have a power supply distance rating of four and must be
within four slots of the Compact I/O power supply. On the right side of the power supply in the local bank and both sides of the power supply in more banks, you can install up to eight modules if
power supply distance ratings for the modules validate the system design.
IMPORTANT In extra banks, you can install I/O modules to the left side, right side, or both
sides of the power supply.
The system design determines how to use the following table.
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