Omron CJ2 User Manual

2-21
2 Basic System Configuration and Devices
CJ2 CPU Unit Hardware User’s Manual
2-1 Basic System Configuration
2
2-1-6 Calculating Power Consumption
These examples show how to calculate the power consumption (W) for the following system.
z Basic PLC Power Consumption (W_PLC)
W_PLC = (0.82 + 0.09 × 2 + 0.17 × 2 + 0.58 × 2)A × 5 V ÷ 0.7= 17.86 W
z Basic I/O Unit Power Consumption (W_IO_ONOFF)
W_IO_ONOFF = 24 V × 0.0041 A x 128 points + 0.1 × 0.3 A × 128 points = 16.43 W
z Average Power Consumption (W)
W = W_PLC + W_IO_ONOFF = 34.29 W
Calculation Examples
Units Model Quantity 5 VDC Other
CPU Unit CJ2H-CPU68-EIP 1 Unit 0.82 A ---
Input Units CJ1W-ID261 2 Units 0.09 A Rated input voltage: 24 V
Input current: 4.1 mA
Number of input points: 64
Output Unit CJ1W-OD261 2 Units 0.17 A Residual voltage: 0.1 V
Maximum load current: 0.3 A
Number of output points: 64
Special I/O
Units
CJ1W-MAD42 2 Units 0.58 A ---
CPU Rack
Power Supply
Unit
CJ2H-CPU68-EIP
CPU Unit
CJ1W-MAD42 × 2
Special I/O Units
CJ1W-ID261 × 2
CJ1W-OD261 × 2
Basic I/O Units

Omron CJ2 Specifications

General

Model	CJ2
Manufacturer	Omron
Type	Programmable Logic Controller (PLC)
CPU Units	Multiple models available (e.g., CJ2M, CJ2H)
Number of I/O Points	Up to 2, 560 points
Communication Ports	Ethernet/IP, EtherCAT, USB, Serial
Expansion	Yes, via I/O Units and Special I/O Units
I/O Control Method	Cyclic Scan, Interrupt
Programming Language	Ladder diagram, structured text, function block diagram, sequential function chart, instruction list
Built-in I/O	Available on some models (e.g., CJ2M)
Ethernet Port	Yes, 1 port (depending on CPU Unit)
Serial Ports	RS-232C, RS-422/485 (configurable)
USB Port	Yes (for programming and monitoring)
Operating Temperature	0°C to 55°C
Storage Temperature	-25 to 70°C
Humidity	10 to 95% RH (non-condensing)
Vibration Resistance	10 to 57 Hz, Amplitude: 0.075 mm, 57 to 150 Hz, Acceleration: 1 G, X, Y, and Z directions, 80 min each
Power Supply Voltage	24 VDC or 100 to 240 VAC (depending on CPU Unit)