C J 1 S Y S T E M P O W E R A N D E X PA N S I O N
Power and Expansion Selection
This section provides tools to calculate the CJ1 system current consumption total needed to select
the power supply. When the number of modules or power requirements exceeds the capability of the
power supplies available, I/O expansion racks solve the problem. If the number of modules per rack
exceeds 10 or the current consumption is greater than the capacity of the power supply units, use the
CPU and expansion rack configuration.
What is the basic configuration?
A CJ1 system consists of a power supply, a CPU, and up to 10 basic I/O, special I/O and
CPU bus units, and an end cover. See page B-109.
What goes on expansion I/O racks?
The expansion I/O rack contains a power supply, an I/O interface module and the remaining
I/O modules. Each expansion rack requires a power supply, the I/O interface module and up
to 10 more modules.
Where are ratings to calculate overall current consumption?
All the current consumption ratings for the CPU, basic I/O, special I/O and CPU bus units
are collected in the tables on pages B-110 to B-111.
Which power supply is right?
Compare the current consumption total of basic I/O, special I/O, and CPU bus units to
determine which power supply to use.
Input Voltage
Output rating
Output capacity
Power supply model
See page
100 to 240 VAC
5 A, 5 VDC with 2 A RUN output
25 W max.
CJ1W-PA205R
B-110
2.8 A, 5 VDC
14 W max.
CJ1W-PA202
B-110
24 VDC
5 A, 5 VDC
25 W max.
CJ1W-PD025
B-110
Note: If more than 10 modules are required or the current consumption exceeds the output
capacity of the power supplies, go to page B-109 for configuration of I/O expansion racks.
The same power supply units can be used for both CPU and I/O expansion racks.
How many expansion I/O racks can be used?
Depending on the CPU chosen, the system can be expanded with up to three additional racks of
basic I/O, special I/O and CPU bus units.
Maximum I/O modules
per CPU
Maximum I/O expansion
racks per CPU
CPU models
40
3
CJ1G-CPU44H
CJ1G-CPU45H
CJ1H-CPU65H
CJ1H-CPU66H
Note: Order one CJ1W-IC101 I/O control module for the CPU rack and one CJ1W-II101 I/O
interface module for each I/O expansion rack. Connect the modules with a cable of
the appropriate length. Second and third I/O expansion racks connect between I/O
interface modules. See page B-117 for details.
30
2
CJ1G-CPU42H
CJ1G-CPU43H
20
1
CJ1M-CPU13
CJ1M-CPU23
10
0
CJ1M-CPU12
CJ1M-CPU22
10
0
CJ1M-CPU11
CJ1M-CPU21
B-108
System Power and Expansion
System Configuration
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Basic Configuration
A CJ1 Series basic configuration consists of a CPU, Power Supply Unit, Basic I/O Modules, Special I/O Modules, CPU
Bus Modules, and an End Cover. Add up the current consumption of all the modules and the CPU according to the
formula on the following page and then select the Power Supply Unit right for the application.
Basic Configuration
Power
Supply
Unit
Memory Card
Configuration Modules
(Basic I/O Modules,
Special I/O Modules,
CPU Bus Modules)
CPU
End Cover
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CPU and Expansion Racks
If the number of modules per rack exceeds 10 or the current consumption is greater than the capacity of the Power Supply
Units, use the CPU and Expansion Rack configuration. This divides the load from the modules across two Power Supply
Units. To ensure communication and automatic channel assignment in programming, order an I/O Control Module for the
CPU Rack and an I/O Interface Module on each Expansion Rack.
CPU Rack
Power
Supply
Unit
Memory Card
CPU
I/O Control Module
Configuration Modules
(Basic I/O Modules,
Special I/O Modules,
CPU Bus Modules)
End Cover
Expansion Rack
(Up to 3 Expansion
Racks Allowed)
Power
Supply
Unit
I/O Interface Module
I/O Connecting Cable
Configuration Modules
(Basic I/O Modules,
Special I/O Modules,
CPU Bus Modules)
End Cover
Programmable Controller
CJ1
B-109
System Power and Expansion
Current Consumption
Calculate All Aspects of Current Consumption
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Calculating Maximum Current Consumption
A. Calculate Maximum Current Supply
(See the table below.)
•
•
•
•
•
•
Current required at 5 VDC by all Modules in column (A)
≤
Maximum current consumption shown in table
Current required at 24 VDC by all Modules in column (B)
≤
Maximum current consumption shown in table
Current required at 24 VDC for service power supply in column (C)
≤
Maximum current consumption shown in table
A
×
5 VDC + B
×
24 VDC + C
×
24 VDC
≤
Maximum total power consumption shown in column (D)
The amount of current/power that can be supplied to the Modules mounted in a Rack is limited by the capacity of the
Power Supply Unit.
Design the system so that the total current consumption of the Modules 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.
B. Calculate Maximum Total Power Supply
(See the table below.)
Reference Table for Maximum Current Consumption
The following table shows the maximum currents and power that can be supplied by Power Supply Units on CPU Racks
and Expansion Racks.
Power Supply Unit
pp y
Maximum current consumption
(A) 5-V group
CJ1W-PA205R
CJ1W-PA202
CJ1W-PD025
5.0 A
2.8 A
5.0 A
(B) 24-V group
relay driver power supply
0.8 A
0.4 A
0.8 A
(C) 24-V group
service power supply
None
None
None
(D) Maximum total
( )
ti
power consumption
25 W
14 W
25 W
Note:1. When calculating current/power consumption in a CPU Rack — be sure to include the power required by the
CPU itself. When expanding the configuration, be sure to include the power required by the I/O Control Module.
2. When calculating current/power consumption in an Expansion Rack — be sure to include the power required by
the I/O Interface Module itself.
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Example Calculations
In this example, the following modules are mounted to a CJ1 Series CPU Rack with a CJ1W-PA205R Power Supply Unit.
Module
CPU
I/O Control Module
Input Modules
p
Output Modules
Special I/O Module
CPU Bus Module
Current
consumption
Model
CJ1G-CPU45
CJ1W-IC101
CJ1W-ID211
CJ1W-ID231
CJ1W-OC201
CJ1W-DA041
CJ1W-CLK21
Calculation
Result
Power consumption
p
Calculation
Result
Quantity
1
1
2
2
2
1
1
5 VDC
0.910 A
0.020 A
0.080 A
0.090 A
0.090 A
0.120 A
0.350 A
0.910+0.020+0.080×2+0.090×2+
0.090×2+0.120+0.350
1.92 A (≦5.0 A)
1.92×5 V = 9.60 W
9.60+2.304 = 11.904 W (≦25 W)
24 VDC
—
—
—
—
0.048 A
—
—
0.048 A×2
0.096 A (≦0.8 A)
0.096 A×24 V = 2.304 W
B-110
Programmable Controller
CJ1
System Power and Expansion
Current Consumption
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Current Consumption Tables
5-Volt Group: CPUs and Expansion Modules
Module
Model
Current
consumption
at 5 V (A)
0.99
(See note.)
0.91
(See note.)
Special I/O Modules
Category
Module
Model
Current
consumption
at 5 V (A)
0.42
0.42
0.12
0.12
0.14
0.14
0.58
CPUs
(These values include
current consumption for
a Programming Console
or CX-Programmer.)
CJ1H-CPU66H/
CJ1H-CPU65H
CJ1G-CPU45H/
CJ1G-CPU44H/
CJ1G-CPU43H/
CJ1G-CPU42H
CJ1G-CPU45/
CJ1G-CPU44
CJ1M-CPU11/
CJ1M-CPU12
CJ1M-CPU13
CJ1M-CPU21/
CJ1M-CPU22
CJ1M-CPU23
Special
p
I/O
Modules
Analog Input
g p
Modules
M d l
Analog
g
O t t
Output
Modules
0.91
(See note.)
0.58
Mixed
Analog
Module
Temperature
Control
Modules
Position
Control
M d l
Modules
High-speed
Counter
Module
ID Sensor
M d l
Modules
CJ1W-AD081-V1
CJ1W-AD041-V1
CJ1W-DA041
CJ1W-DA021
CJ1W-DA08V
CJ1W-DA08C
CJ1W-MAD42
CJ1W-TCjjj
0.25
0.64
I/O Control Module
CJ1W-IC101
0.02
I/O Interface Module
CJ1W-II101
0.13
End Cover
CJ1W-TER01
—
(Included in CPU or
Expansion Module.)
Note:
Add 0.15 A per Module when the NT-AL001-E is connected.
CJ1W-NC113/133
CJ1W-NC213/233
CJ1W-NC413/433
CJ1W-CT021
0.25
0.36
0.28
Basic I/O Modules and Interrupt Input Module
Category
Name
Model
Current
consumption
at 5 V (A)
0.06
0.08
0.09
0.09
0.09
0.09
0.09
0.08
0.09
0.11
0.10
0.10
0.10
0.10
0.14
0.15
0.14
0.17
0.17
0.17
0.09
0.11
0.22
0.08
0.08
0.13
0.13
0.13
0.14
0.14
0.19
Category
CJ1W-V600C11
CJ1W-V600C12
0.26
0.32
CPU Bus Communication Modules
Name
Model
Current
consumption
at 5 V (A)
0.38
0.35
0.33
0.40
0.40
0.38
(See note.)
0.28
(See note.)
0.15
Basic
I
t
Input
Modules
DC Input
p
M d l
Modules
AC Input
p
M d l
Modules
Basic
Output
O t t
Modules
Transistor
Relay
y
Triac
Interrupt Input Module
Pulse Catch Module
Mixed
CJ1W-ID201
CJ1W-ID211
CJ1W-ID231
CJ1W-ID232
CJ1W-ID261
CJ1W-ID262
CJ1W-IA111
CJ1W-IA201
CJ1W-OD201
CJ1W-OD202
CJ1W-OD203
CJ1W-OD204
CJ1W-OD211
CJ1W-OD212
CJ1W-OD231
CJ1W-OD232
CJ1W-OD233
CJ1W-OD261
CJ1W-OD262
CJ1W-OD263
CJ1W-OC201
CJ1W-OC211
CJ1W-OA201
CJ1W-INT01
CJ1W-IDP01
CJ1W-MD231
CJ1W-MD232
CJ1W-MD233
CJ1W-MD261
CJ1W-MD263
CJ1W-MD563
CPU Bus
Modules
Ethernet
Module
Controller
Link Module
DeviceNet
Module
ProfiBus-DP
M d l
Module
Serial
Communica-
ti
M d l
tions Module
CJ1W-ETN21
CJ1W-CLK21-V1
CJ1W-DRM21
CJ1W-PRM21
CJ1W-PRT21
CJ1W-SCU41
CJ1W-SCU21
CompoBus/S CJ1W-SRM21
Master
Module
Note:
Add 0.15 A per Module when the NT-AL001-E is connected.
24-Volt Group: CJ1 Series Basic Output Modules
Category
Name
Model
Current
consumption
at 24 V (A)
0.048
(0.006×No.
of points ON)
0.096
(0.006×No.
of points ON)
Basic
Output
Modules
Relay Output
Units
CJ1W-OC201
CJ1W-OC211
Programmable Controller
CJ1
B-111
System Power, Expansion and I/O Allocations
I/O Allocations
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Overview
In CJ1 Series PLCs, I/O memory is allocated based on
the following: Basic I/O are automatically assigned words
based on position in the rack. In contrast, for Communica-
tions and Bus I/O, the user assigns the word allocations
within set ranges.
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Allocations to Basic I/O
Module Groups
Allocated words in the CIO Area: CIO 0000 to CIO 0079
Basic I/O Modules can be mounted to the CPU Rack and to
the Expansion Racks.
CPU Rack Allocations
Basic I/O Modules on the CPU Rack are allocated words
left to right (i.e., from the module nearest the CPU) starting
from CIO 0000. Modules are allocated as many words as
required in word units. Words can be reserved using
CX-Programmer Software.
Up to 10 modules
can be mounted.
Power Supply Unit
CIO
0000
CPU
CPU Rack
End Cover
Allocations to Expansion Racks
I/O allocation to Basic I/O Modules continues from the CPU
Rack to the Expansion Racks. Words are allocated from
left to right, and each module is allocated as many words
as it requires in word units— just like modules in the CPU
Rack. A Rack’s first word setting can be changed to any
word from CIO 0000 to CIO 9999.
Words allocated from the left.
Power Supply Unit
0000
CH
CIO
0000
CPU
CPU Rack
Words allocated from the left.
Words
allocated
in order
from Rack
nearest
CPU Rack.
Power Supply Unit
Expansion Rack
An example of : words allocated from the left.
Power Supply Unit
CPU Rack
OUT
64
CIO
0006
to
0009
IN
16
CPU
CIO
0000
IN
16
CIO
0001
IN
32
CIO
0002
to
0003
OUT
32
CIO
0004
to
0005
Modules with between 1 and 16 I/O points are allocated 1
word (16 bits), and modules having between 17 and 32 I/O
points are allocated 2 words (32 bits). For example, 8-point
Relay Modules are allocated 1 word, with bits 00 to 07
actually allocated to the I/O points.
B-112
Programmable Controller
CJ1
Power Supply Unit
Expansion Rack
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