Unit Current Consumption; Cpu Rack And Expansion Racks - Omron CS1D DUPLEX SYSTEM - 10-2009 Operation Manual

Unit Current Consumption

2-12 Unit Current Consumption

2-12-1 CPU Rack and Expansion Racks

Note
104
Using Pressure-welded Connector
Connecting Cables:
G79-@@@C-@@@-@@@
XW2Z-@@@
There are fixed amounts of current and power that can be provided to the
Units on the Rack. Even when using only one Power Supply Unit, design the
system so that the total current consumption of Units on the Rack does not
exceed the values for the maximum Power Supply Unit current and the maxi-
mum total power.
Calculate the total current consumption under normal conditions (i.e., with
one Power Supply Unit mounted), taking into account the load when an error
occurs at one of the Power Supply Units. If two different kinds of Power Supply
Units are to be used, calculate the current consumption using the output of
the smaller-capacity Power Supply Unit.
Note When duplex Power Supply Units are used, the load for each CS1D Power
Supply Unit is reduced by approximately half.
The maximum current and power provided for the CPU Rack and Expansion
Racks is shown below.
1. CPU Rack: When making calculations, include the current and power con-
sumption for a CPU Backplane for Duplex CPU System, a Duplex Unit, and
two CS1D Power Supply Units.
2. When making calculations, include the current and power consumption for
an Online Replacement Expansion Backplane.
Power Supply
Unit model
CS1D-PA207R
CS1D-PD024
CS1D-PD025
123
150
Maximum current provided
5-V (internal 26-V (relay
logic power power
supply) supply)
7 A 1.3 A
4.3 A 0.56 A
5.3 A 1.3 A
Section 2-12
Maximum
total
24-V (service
power
power
provided
supply)
None 35 W
None 28 W
None 40 W