Rockwell Automation 1769-PB4 Compact I/O Expansion Power Supplies - Manuel (Page 20)

20 Compact I/O Expansion Power Supplies
Publication 1769-IN028B-EN-P - October 2008
Each 1769 I/O module has a power supply distance rating, with a maximum value of
eight. Refer to the specific 1769 I/O module’s installation instructions for more
information.
Power Supply Connection
Item Description
A - B The maximum amount of bus current that can be distributed on the 1769 bus (on either side of
the power supply, A or B) is:
• 2 amps at 5V DC (assume supported by power supply)
• 1 amp at 24V DC (assume supported by power supply)
C Expansion I/O power supplies
D I/O communication expansion cable
IMPORTANT
To use a 1769 expansion I/O power supply with a controller that has an embedded power
supply (for example, MicroLogix 1500), you must use a 1769 expansion I/O cable. Do not
directly attach the expansion power supply to a controller that has an embedded power
supply.
A
B
C
D
44723
Bank 1
Bank 2