Rockwell Automation 1771-A1B_A2B_A3B_A3B1_A4B SERIES B Universal I/O Chassis Installation Instructions - Manual (Page 14)

Universal I/O Chassis 14
Publication 1771ĆIN075A-EN-P - March 2002
Your I/O chassis can receive power through:
•
processors with integral power supplies that provide 2-4A
•
power-supply modules that provide 3-8A
•
external power supplies that provide 6.5-16A
(external power supplies are not designed for parallel operation)
Power-supply modules are designed for parallel operation using
1771–CT cables. See your power supply installation documentation
(1771 I/O Chassis and Power Supplies product data, publication
1771–2.185) for possible configurations.
IMPORTANT
The 1772-LSP, -LWP, -LXP, and -LZP processor
modules already contain a power supply so you
can only parallel one additional power-supply
module with these processor modules.
ATTENTION
!
Do not connect an external power supply
and a power-supply module to the same I/O
chassis; they are incompatible.
WARNING
!
If you insert or remove any module or power
supply while backplane power is on, an
electrical arc can occur. This could cause an
explosion in hazardous location installations. Be
sure power is removed or the area is
nonhazardous before proceeding.
!
WARNING
If you connect or disconnect any cable or wiring
with power applied to this module or the device
on the other end of the cable or wire, an
electrical arc can occur. This could cause an
explosion in hazardous location installations. Be
sure power is removed or the area is
nonhazardous before proceeding.
If your I/O chassis is receiving power through Then
an external power supply or a power supply chassis continue with this section
powerĆsupply modules go to page 16
Provide Power
to the I/O Chassis