2 Basic System Configuration and Devices
2-22
CJ2 CPU Unit Hardware User’s Manual
*1 Some CJ-series CPU Bus Units are allocated words in the CPU Bus Unit Setup Area. The system must be designed so
that the number of words allocated in the CPU Bus Unit Setup Area does not exceed its capacity. Refer to 4-6-2 CPU Bus
Unit Setup Area in CJ2 CPU Unit Software User’s Manual (Cat. No. W473).
There may also be limits due to the capacity of the Power Supply Unit that you are using or the maximum number of Units
to which memory can be allocated in the CPU But Unit Setup Area.
*2 If interrupts to the CPU Unit are used, mount the Interrupt Input Unit in one of the following slots on the CPU Rack.
• CJ2H-CPU6@-EIP: Slots 0 to 3
• CJ2H-CPU6@ or CJ2M-CPU@@: Slots 0 to 4
*3 Up to 15 Units can be connected for a CJ2H-CPU6@-EIP or CJ2M-CPU3@ CPU Unit.
*4 Increases by 0.15 A/Unit when an NT-AL001 RS-232C/RS-422A Link Adapter is used. Increases by 0.04 A/Unit when a
CJ1W-CIF11 RS-422A Converter is used. Increases by 0.20 A/Unit when an NV3W-M@20L Programmable Terminal is
used.
*5 Up to seven Units can be connected for a CJ2H-CPU6@-EIP CPU Unit, up to eight Units can be connected for a CJ2H-
CPU6@ CPU Unit, and up to two Units can be connected for a CJ2M CPU Unit.
*6 Slave I/O are allocated in DeviceNet Area (CIO 3200 to CIO 3799).
*7 Includes the weight of accessory connectors.
*8 Only OMNUC G5-series Servo Drives with Built-in EtherCAT can be connected.
*9 When mounting to a CJ-series CPU Rack or a CJ-series Expansion Rack, one of these Units uses the space of three
Units.
*10 Use version 2 or higher of the SYSMAC SPU Unit with a CJ2 CPU Unit.
The amount of current/power that can be supplied to the Units mounted in a Rack is limited by the
capacity of the Rack’s Power Supply Unit. Refer to the following tables when designing your system so
that the total current consumption of the mounted Units does not exceed the maximum current for each
voltage group and the total power consumption does not exceed the maximum for the Power Supply
Unit.
For details on calculating the current consumption of Units, refer to 2-1-2 CPU Rack, 2-1-3 Expansion
Racks, and 2-1-4 Configuration Units.
The following table shows the maximum currents and power that can be supplied by Power Supply
Units in CPU Racks and Expansion Racks.
Note 1 When calculating current/power consumption in a CPU Rack, be sure to include the power required by the
CPU Unit itself, as well as the I/O Control Unit if one or more Expansion Racks is connected.
2 Be sure to include the power required by the I/O Interface Unit when calculating current/power consump-
tion in an Expansion Rack.
2-1-5 Calculating Unit Current Consumption
Maximum Current and Power Supplied by Power Supply Units
Power Supply Unit
Max. current consumption
Max. total power
consumption
5-V group
(internal logic)
24-V group
(relays)
24-V group
(service)
CJ1W-PA205R 5.0 A 0.8 A None 25 W
CJ1W-PA205C 5.0 A 0.8 A None 25 W
CJ1W-PA202 2.8 A 0.4 A None 14 W
CJ1W-PD025 5.0 A 0.8 A None 25 W
CJ1W-PD022 2.0 A 0.4 A None 19.6 W
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