Omron CJ1M-CPU21 CJ1M Series PLC CPU Unit
SKU: CJ1M-CPU21USD 180.00
Omron CJ1M-CPU21 is a CJ1M series PLC CPU unit with built-in pulse I/O for compact machine control with positioning capability.
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Product Overview
The Omron CJ1M-CPU21 is a CPU unit from the CJ1M series, a popular mid-range programmable logic controller family known for reliability and cost-effectiveness. This CPU provides 5K steps of program memory with capacity for up to 160 I/O points, making it suitable for small to medium automation applications. The CJ1M-CPU21 features built-in high-speed counter functionality and pulse output capabilities, ideal for positioning and motion control applications. Its compact design and modular architecture allow flexible configuration with CJ series I/O modules. Programming is done via CX-Programmer, providing a comprehensive development environment for logic, positioning, and network configuration.
- SKU: CJ1M-CPU21
- Series: CJ1M
- I/O: 2 I/O
Best-Fit Applications
- Small packaging machinery
- Simple assembly automation
- Conveyor control systems
- HVAC control
- Pump and motor control
- Lighting control systems
Buying Checklist
- Ideal for applications needing up to 160 I/O points
- Verify program capacity meets application needs
- Confirm communication options required
- Check power supply type compatibility
Technical Specifications
| Model | CJ1M-CPU21 |
|---|---|
| Series | CJ1M |
| Type | PLC CPU Unit |
| Program Capacity | 10K steps |
| Data Memory | 8K words |
| Built-in Pulse I/O | 2-axis 100kHz |
| Max I/O Points | 256 points |
| LD Instruction Time | 0.1μs |
| Built-in Ports | RS-232C |
| Expandable Units | Up to 10 units |
| Battery Life | 5 years |
| Operating Temperature | 0 to +55°C |
Resources & Downloads
FAQ for CJ1M-CPU21
What's the difference between CJ1M-CPU11, CPU12, and CPU21?
Program capacity: CPU11=2.5K, CPU12=5K, CPU21=10K steps. All have built-in pulse I/O. Choose based on program size requirements.
Can this CPU control stepper motors?
Yes, built-in 100kHz pulse output suitable for stepper motor control. Use pulse/direction signals. For servo motors, same pulse output works with servo drives accepting pulse input.
What positioning functions are available?
Independent positioning, speed control, home return. Programmed via PLC positioning instructions. For complex motion (interpolation), add CJ1W-NC position control unit.
Is this CPU suitable for retrofit projects?
Yes, CJ1M is commonly used for retrofitting older C200H or CQM1 systems. Compatible with many existing I/O modules. Compact size fits in existing panels.
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