EJ1N-TC4A-QQ

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