Rockwell Automation 1794-L34 FlexLogix Controller System User Manual - Manual (Page 54)

Publication 1794-UM001G-EN-P - January 2007
54 Place, Configure, and Monitor I/O
Place Local I/O Modules The FlexLogix controller supports a local DIN rail of as many as 8 I/O
modules and an extended-local DIN rail of as many as 8 I/O modules.
The second DIN rail is optional.
Selecting a Power Supply
In a FlexLogix system, select an Allen-Bradley power supply. In
applications that must be compliant with CSA requirements, use a
Separated Extra-Low Voltage (SELV) power supply that is compliant
with IEC 61010.1, Annex H.
When selecting power supplies:
• Provide power for the controller separately from the power for
the FLEX I/O modules. To provide power for FLEX I/O modules,
follow the guidelines in the documentation for those modules.
• When providing power for the 1794-FLA extended-local I/O
adapter, treat the adapter as a communication adapter, not as an
I/O module.
1794 FLEX power supplies
The following power supplies available for use with the FlexLogix
system.
See:
• FLEX I/O Analog Modules User
Manual, 1794-6.5.2
• FLEX I/O Digital Modules User
local DIN rail
extended-local DIN rail
Catalog number Nominal
input
voltage
Input
voltage
range Maximum
real input
power Maximum
apparent input
power Maximum
transformer
load Output current
1794-PS3 120/230V ac 85-265V ac 86W 205VA 250VA 3.0A @ 24V dc (horizontal
mount)
2.8A @ 24Vdc (non-horizontal
mount)
1794-PS13 36W 53VA 90VA 1.3A @ 24V dc