The Omron PLC High-speed Counter Unit CJ1W-CT021 is engineered for applications requiring ultra-fast counting and positioning feedback, such as packaging, labeling, and material handling systems. As a dedicated 2-input module within the CJ1W series, it directly interfaces with incremental encoders and proximity sensors, delivering real-time count values to the CPU without latency. This unit is ideal for replacing or upgrading legacy counters in existing CJ-system architectures, providing reliable performance in high-vibration and electrically noisy environments.
| Parameter |
Specification |
| Model Number |
CJ1W-CT021 |
| Product Type |
High-speed Counter Unit |
| Number of Inputs |
2 |
| Maximum Input Frequency |
500 kpps (kilo pulses per second) |
| Input Signal Types |
Phase A, Phase B, Z (zero pulse) – compatible with line driver and open collector encoders |
| Counting Modes |
Linear, ring, and preset value counting |
| Power Supply |
Supplied via CJ-series backplane (5 VDC internal) |
| Mounting |
DIN rail or direct backplane mount |
- High-Speed Capture: Supports up to 500 kpps per channel, enabling precise tracking of fast-moving machinery.
- Flexible Input Configuration: Accepts differential line-driver signals (RS-422) for noise immunity over long cable runs, or single-ended 24 VDC open-collector inputs.
- Built-in Preset & Gate Functions: Hardware-based preset input and gate control allow for accurate position latching and synchronized counting.
- Real-Time Data Access: Count values are directly mapped to PLC memory for immediate use in motion control, speed calculation, or position comparison.
- Diagnostic LEDs: Front-panel indicators for power, input status, and count direction simplify troubleshooting.
- Environmental Rating: Operates reliably from 0°C to 55°C with 10% to 90% non-condensing humidity.
What Does Our Clients Say
Mitsubishi MR-J4
Laura Navas
Great product!
2019/12/01
Keyence sensor
EQDR SALES
Original and fast!
2020/02/22