Product Description

Omron EJ1N-TC4A-QQ

The Omron EJ1N-TC4A-QQ is a versatile modular temperature controller unit designed for precise multi-loop temperature management in industrial applications. As part of Omron’s EJ1 series, it offers four independent control channels, supporting a wide range of thermocouple inputs for accurate temperature sensing. This unit is engineered for integration into larger systems, providing reliable ON/OFF or 2-PID control with auto-tuning capabilities. Its voltage outputs are suitable for driving Solid State Relays (SSRs), making it an efficient solution for demanding temperature regulation tasks.

Technical Specifications:

Product Series: EJ1
Controller Type: Modular Temperature Controller Unit
Number of Inputs: 4 channels
Input Sensor Type: Thermocouple (K, J, T, E, L, U, N, R, S, B, W, PLII)
Control Output: 4 points, Voltage output (for driving SSRs, NPN output, 12 VDC, 21 mA per point)
Supply Voltage: 24 VDC
Control Method: ON/OFF control or 2-PID control (with auto-tuning)
Sampling Period: 250 ms
Mounting Type: DIN Rail (when connected to an End Unit and other EJ1 units)
Ambient Operating Temperature: -10 to 55 °C (14 to 131 °F)
Current Consumption: 130 mA max. (at 24 VDC)