Omron

The Omron EJ1N-TC4A-QQ is a compact and high-precision **modular temperature controller** from the EJ1N Series, engineered for **multi-channel, fast-response industrial temperature control**. Its **module-type design** makes it ideal for control panels where space efficiency, scalability, and high-density temperature control are required.

This model supports **4 temperature input points** and provides **four SSR-driving voltage outputs (2 + 2 points)**, enabling precise and independent control of multiple heating zones. It operates on a **24 VDC power supply** and offers **ON/OFF control or advanced 2-PID control with both auto-tuning and self-tuning**, ensuring stable and responsive temperature regulation even in dynamic processes.

The EJ1N-TC4A-QQ accepts a wide range of temperature sensors, including **thermocouples, platinum resistance thermometers, and infrared thermosensors**, allowing flexible integration across various industrial applications. With **screw terminal (M3) wiring**, robust electrical insulation, and industrial-grade environmental tolerance, it is well suited for **semiconductor equipment, plastic processing machines, packaging lines, and multi-zone heating systems**.

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## Specifications

- **Brand:** Omron  
- **Model / SKU:** EJ1N-TC4A-QQ  
- **Category:** Temperature Controllers  
- **Series:** EJ1N Series  
- **Product Type:** Modular digital temperature controller  
- **Form Factor:** Module type  
- **Fixed / Programmable:** Fixed  
- **Number of Input Points:** 4  
- **Input Type:**  
  - Thermocouple: K, J, T, E, L, U, N, R, S, B, W/C, PLⅡ  
  - Platinum resistance thermometer: Pt100, JPt100  
  - Infrared thermosensor ranges: 10–70 °C, 60–120 °C, 115–165 °C, 140–260 °C  
- **Control Method:** ON/OFF control or 2-PID control with auto-tuning and self-tuning  
- **Control Output 1:** Voltage output (for driving SSR), 2 points  
- **Control Output 2:** Voltage output (for driving SSR), 2 points  
- **Power Supply Voltage:** 24 VDC  
- **Operating Voltage Range:** 85% to 110% of rated supply voltage  
- **Power Consumption:** 3 W max. (at maximum load)  
- **Insulation Resistance:** 20 MΩ minimum (at 500 VDC)  
- **Dielectric Strength:** 600 VAC, 50/60 Hz for 1 minute  
- **Vibration Resistance:**  
  - Malfunction: 10–55 Hz, 20 m/s² for 2 hours each in X, Y, Z directions  
- **Shock Resistance:**  
  - Malfunction: 150 m/s², 3 times each in 6 directions  
- **Ambient Temperature (Operating):**  
  - −10 to 55 °C (−10 to 50 °C for 3-year warranty)  
- **Ambient Temperature (Storage):** −25 to 65 °C  
- **Ambient Humidity (Operating):** 25% to 85%  
- **Degree of Protection:** Rear case IP20, terminal section IP00  
- **Terminal Type:** Screw terminals (M3)  
- **Weight:** Controller approx. 210 g; adapter approx. 4 g × 2  
- **Applications:** Multi-zone heaters, semiconductor equipment, plastic processing machines, packaging systems, industrial automation panels  


### Why Choose Omron EJ1N-TC4A-QQ?

- Multi-channel control with 4 inputs and 4 SSR outputs  
- Compact modular design for high-density temperature control  
- Advanced PID control with auto-tuning and self-tuning  
- Wide sensor compatibility for flexible applications  
- Proven Omron reliability for demanding industrial environments

The Omron EJ1N-TC4A-QQ is a high-precision modular temperature controller providing multi-channel, fast-response industrial temperature control for a wide range of applications.

EJ1N Series

Categories

EJ1N-TC4A-QQ