Module Power Consumption Calculation For A Local Bank - Allen-Bradley Compact GuardLogix 5370 User Manual

Chapter 6 Add and Configure Standard I/O Modules
Table 11 - Module Power Consumption Calculation for a Local Bank
Side of Power
Supply Device Cat. No.
Left - Required 1769-L30ERMS
1769-L33ERMS
1769-L33ERMSK
1769-L36ERMS
1769-L37ERMS
1769-L38ERMS
Left - Optional I/O Module-specific
Right I/O Module-specific
IMPORTANT: Insert a separate row in this
calculation for each I/O module.
Total Current Required for Single Bank if Modules Are Installed on Both Sides of the Power Supply
(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.
90
Calculate Power Consumption in Single 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.
Use this table to calculate power consumption in one bank.
Module Current Requirements
Number of
(3)
Modules at 5V DC (in mA)
1 500
Up to 3 Module-specific
Up to 8 Module-specific
Calculate Power Consumption in an Additional Bank
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.
Use Table 12 to calculate power consumption in an extra bank.
Rockwell Automation Publication 1769-UM022C-EN-P - June 2018
Calculated Current =
(Number of Modules) x (Module
Current Requirements)
at 24V DC (in mA) at 5V DC (in mA)
225 500
Module-specific
(2)
Total Current Required :
Module-specific
(2)
Total Current Required :
(1)
:
at 24V DC (in mA)
225