SKU: CJ1W-ID231
Omron CJ1W-ID231 Digital Input Unit 32 Points DC24V
Omron CJ1W-ID231 is a 32-point DC24V digital input unit for CJ series PLCs, providing high-density input for industrial automation.
USD 45.00 per unit, volume discounts available
- In stock, ships in 24h
- 100% genuine Omron
- 1-year manufacturer warranty
- Worldwide delivery
Key Features
- CJ1W modular digital input expansion architecture
- Adds discrete field input capacity to CJ systems
- Suitable for scalable machine and process control panels
- Supports structured signal grouping by cabinet zone
- Useful for retrofit and lifecycle extension programs
- Integrates with existing CJ-series maintenance workflows
Digital Input Expansion for Scalable CJ-Series PLC Panels
CJ1W-ID231 is an Omron CJ1W digital input module for CJ-series controller architectures. It is typically used when installed systems require additional sensor and contact inputs without changing CPU family. In industrial panel design, modular input expansion improves maintainability and allows clearer signal grouping by machine zone. This model is often applied in retrofit projects, utility panel growth, and OEM variants with increasing input count requirements. Engineering validation should include input signal level compatibility, address assignment, common wiring strategy, and diagnostic mapping in PLC software. Clear channel labeling and documentation are essential to reduce troubleshooting time in production. CJ1W-ID231 is generally selected for dependable input scaling and long-term platform continuity in modular control assets.
Typical Applications
- Sensor input expansion in machine control cabinets
- Interlock and status contact acquisition in process panels
- Retrofit growth of installed CJ platform systems
- Multi-zone digital monitoring in production lines
- Additional field signal integration for OEM variants
- Structured expansion in long-lifecycle industrial assets
Buying Checklist
- Verify rack and CPU compatibility before module procurement.
- Validate input electrical characteristics against field devices.
- Plan I O address mapping impact in existing PLC program.
- Ensure clear terminal labeling for maintenance diagnostics.
- Keep spare modules for critical lines using CJ architectures.
Technical Specifications
| Model | CJ1W-ID231 |
|---|---|
| Series | CJ1W |
| Type | Digital Input Unit |
| Input Points | 32 points |
| Input Voltage | DC24V |
| Input Current | 7mA typical |
| Response Time | 0-32ms (adjustable) |
| Common | 16 points/common, 2 circuits |
| Connection | Removable terminal block |
| Current Consumption | 150mA at 5VDC |
| Mounting | CJ series backplane |
| Operating Temperature | 0 to +55°C |
Frequently Asked Questions
What's the advantage of 32-point unit?
Higher density: 32 points in same width as 16-point unit. More cost-effective per point. Reduces number of units needed for large I/O counts.
How many commons does this unit have?
2 commons (16 points each). Allows grouping inputs by voltage source or function. Each common can be wired to different 24VDC sources if needed.
What's the power consumption?
150mA at 5VDC (internal from backplane). External: 7mA per input at 24VDC. For 32 inputs ON: 224mA external current.
Can I use this for high-speed counting?
No, ID231 is standard input (max 1kHz with 0ms filter). For high-speed counting, use CJ1W-CT021 high-speed counter unit or CPU built-in high-speed counter inputs.
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