Rockwell Automation 1769-PB4 Compact I/O Expansion Power Supplies - Manuel (Page 19)

Compact I/O Expansion Power Supplies 19
Publication 1769-IN028B-EN-P - October 2008
Schematic (Using ANSI/CSA Symbols)
Connect the Power Supplies
Compact I/O system architecture and the power supply design support connection of I/O
on either side of the power supply. Each I/O bank requires its own power supply.
To connect 2 I/O banks, attach a 1769 expansion I/O cable to a power supply or I/O
module as shown in the
Power Supply Connection illustration. Up to 8 I/O modules can be
connected on either side (A or B in the illustration) of the power supply for a maximum of 16
modules per bank.
L1 L2
Disconnect
Isolation
Transformer
X1 X2
Fuse
Operation of either of these
contacts will remove power from
the external I/O circuits, stopping
machine motion.
Emergency-Stop
Push Button
Overtravel
Limit Switch
Stop
Start
Fuse MCR
230V AC
I/O
Circuits
Master Control Relay (MCR)
Cat. No. 700-PK400A1
Suppressor
Cat. No. 700-N24
MCR
Suppr
MCR
MCR
115V AC or
230V AC
DC Power Supply.
Use NEC Class 2 for
UL Listing.
_ +
24V DC
I/O Circuits
MCR
(Lo) (Hi)
230V AC
Line Terminals: Connect to the 24V
DC 1769 power supply terminals.
Line Terminals: Connect to the AC
1769 power supply terminals.
115V AC
or 230V
AC