Core Specifications Category Details Product Type EJ1 high-function unit (programless communication, 4 aux outputs, 4 event inputs, 2-channel HB detection) Manufacturer Omron Automation Mounting 35 mm DIN rail; modular EJ1 system compatibility Power Supply 24 V DC (20.4–26.4 V DC; 2.5 W max) Auxiliary Outputs 4×transistor outputs (sink type, 24 V DC, 0.5 A each) Event Inputs 4×dry-contact event inputs (remote SP, run/stop, alarm reset) Heater Burnout Detection 2-channel CT input (current transformer) Communication Programless (Port C: RS-422/RS-485; Port A: RS-485 from end unit) Terminals M3 screw terminals (secure, tool-assisted wiring) Max Loops Controls up to 64 temperature control loops (via EJ1 TC modules) Operating Temp -10°C to +55°C (no condensation/icing) Certifications CE, UL, CSA, RoHS Dimensions/Weight 22.5×90×60 mm (W×H×D); ~150 g Model Breakdown (EJ1N-HFUA-NFL2) Code Meaning EJ1N Series: EJ1 modular temperature controller system (network unit) HFU Type: High-function unit A Terminal Type: M3 screw terminals N Communication: Programless RS-422/RS-485 F Auxiliary Outputs: 4×transistor outputs (sink type) L Event Inputs: 4×dry-contact inputs 2 Heater Burnout Detection: 2-channel CT input Key Functions & Advantages Programless Communication: No code needed for PLC/HMI integration, cutting engineering time and errors. RS-422/RS-485 Flexibility: Dual serial ports (Port C selectable; Port A from end unit) for diverse industrial network setups. 4 Event Inputs: Supports remote setpoint adjustment, run/stop control, and alarm reset for flexible system integration. 4 Auxiliary Outputs: Monitors high/low temperature, deviation, or process limits for enhanced safety and visibility. 2-Channel HB Detection: CT-based current monitoring detects broken heaters or SSR faults, preventing downtime. Core Specifications Category Details Product Type EJ1 high-function unit (programless communication, 4 aux outputs, 4 event inputs, 2-channel HB detection) Manufacturer Omron Automation Mounting 35 mm DIN rail; modular EJ1 system compatibility Power Supply 24 V DC (20.4–26.4 V DC; 2.5 W max) Auxiliary Outputs 4×transistor outputs (sink type, 24 V DC, 0.5 A each) Event Inputs 4×dry-contact event inputs (remote SP, run/stop, alarm reset) Heater Burnout Detection 2-channel CT input (current transformer) Communication Programless (Port C: RS-422/RS-485; Port A: RS-485 from end unit) Terminals M3 screw terminals (secure, tool-assisted wiring) Max Loops Controls up to 64 temperature control loops (via EJ1 TC modules) Operating Temp -10°C to +55°C (no condensation/icing) Certifications CE, UL, CSA, RoHS Dimensions/Weight 22.5×90×60 mm (W×H×D); ~150 g Model Breakdown (EJ1N-HFUA-NFL2) Code Meaning EJ1N Series: EJ1 modular temperature controller system (network unit) HFU Type: High-function unit A Terminal Type: M3 screw terminals N Communication: Programless RS-422/RS-485 F Auxiliary Outputs: 4×transistor outputs (sink type) L Event Inputs: 4×dry-contact inputs 2 Heater Burnout Detection: 2-channel CT input Key Functions & Advantages Programless Communication: No code needed for PLC/HMI integration, cutting engineering time and errors. RS-422/RS-485 Flexibility: Dual serial ports (Port C selectable; Port A from end unit) for diverse industrial network setups. 4 Event Inputs: Supports remote setpoint adjustment, run/stop control, and alarm reset for flexible system integration. 4 Auxiliary Outputs: Monitors high/low temperature, deviation, or process limits for enhanced safety and visibility. 2-Channel HB Detection: CT-based current monitoring detects broken heaters or SSR faults, preventing downtime.