Omron SYSMAC C500, Installation Manual

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Section 2
Description of All Components
14
2-3 Expansion I/O Backplane
The Expansion I/O Backplane shown in the following diagram, can be used
to expand the C500 PC. An Expansion I/O Rack is just like a CPU Rack, ex-
cept a CPU is not mounted. However, a Power Supply is needed for each
Expansion I/O Rack. There are three models of Expansion I/O Backplane
available.
Expansion I/O Backplane
I/O Interface Unit
An I/O Interface Unit must be mounted to an Ex-
pansion I/O Rack in order to connect the Expan-
sion I/O Rack to another Expansion I/O Rack.
I/O Units
Expansion I/O Power Supply
2-4 I/O Power Supply
Just as a Power Supply must be mounted to the CPU Rack, a Power Supply
must also be mounted to each Expansion I/O Backplane. There are two
Power Supplies available; 100 to 120/200 to 240 VAC and 24 VDC, both of
which are explained below. For details, refer to
Appendix B Specifications.
Model Supply Voltage Output
Capacity
Available
Current for I/O
Units
240 VDC
Output
Terminal
3G2A5-PS222-E 100 to 120/200
to 240 VAC
(selectable) 7A 5 VDC 6.5 A Provided
3G2A5-PS212-E 24 VDC 7 A 5 VDC 6.5 A Not provided
Note Be sure to keep the total power consumed by all the Units mounted
on a Rack within the value stated in the table above. For example, do
not mount I/O Units with a total current consumption of 7A to a Rack
supplied by a 7 A Power Supply. As shown in the table above, the
available current for I/O Units is only 6.5 A. For details concerning
current consumption, refer to
Section 4 System Connections.