Rockwell Automation Publication 1769-UM021G-EN-P - October 2015 245
Use I/O Modules with CompactLogix 5370 L3 Controllers Chapter 9
Calculate System Power Consumption
The 1769 Compact I/O power supplies provide power to CompactLogix local
and more banks. The provided power is measured in current capacity.
Consider these points when designing your CompactLogix 5370 L3 control
system banks:
• 1769 Compact I/O power supplies have two maximum current capacity
requirements that affect how you design and configure one bank.
The following are the maximum current capacity requirements:
– Maximum current capacity for one bank
– Maximum current capacity for each side of the power supply
• The maximum current capacity requirements vary by the power supply
that is used in the bank.
Power Supply
Cat. No.
Current Capacity, max for Single Bank Current Capacity, max for Each Side of
Bank
(1)
(1) Specification for banks with devices on left and right sides of the power supply.
1769-PA2
2 A at 5V DC and 0.8 A at 24V DC 1 A at 5V DC and 0.4 A at 24V DC
1769-PB2
1769-PA4
4 A at 5V DC and 2 A at 24V DC 2 A at 5V DC and 1 A at 24V DC
1769-PB4
Current Capacity for Single Bank
Current Capacity for Side of Bank Current Capacity for Side of Bank
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