E5EN-R3MT-500-N

The Omron E5EN-R3MT-500-N is a high-function digital temperature controller from the E5EN Series, designed for demanding industrial process control applications. Featuring a vertical 1/8 DIN (48 × 96 mm) panel-mount design, this controller combines advanced PID control, extensive alarm and event handling, and enhanced monitoring capabilities in a robust black housing.

This model supports a wide range of temperature and analog inputs, including thermocouples, platinum resistance thermometers, infrared temperature sensors, and low-level analog signals. It provides reliable ON/OFF control or advanced 2-PID control with auto-tuning, making it suitable for both heating and cooling applications. The relay control output allows direct load switching, while three auxiliary relay outputs and two event inputs enable complex alarm logic and external control integration.

The E5EN-R3MT-500-N features a distinctive three-level LCD display that simultaneously shows Process Value (PV), Set Value (SV), and Manipulated Value (MV), improving operator visibility and diagnostics. Although this model is currently in a phase-out status, it remains widely used in existing installations, with newer Omron temperature controllers recommended for new designs.

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Specifications

• Brand: Omron
• Model / SKU: E5EN-R3MT-500-N
• Category: Temperature Controllers
• Series: E5EN Series
• Controller Type: Digital temperature controller / meter
• Controller Size: 1/8 DIN vertical (48 × 96 mm)
• Mounting Type: Flush mounting on door
• Input Type:
  • Thermocouple: K, J, T, E, L, U, N, R, S, B, W, PL II
  • Platinum resistance thermometer: Pt100, JPt100
  • Infrared temperature sensor
  • Analog input: 0–50 mV
• Control Method: ON/OFF control, 2-PID control with auto-tuning
• Control Output:
  • 1 × relay output (SPST-NO, 250 VAC, 5 A resistive)
• Auxiliary Outputs:
  • 3 × relay outputs (SPST-NO, 250 VAC, 3 A resistive)
• Digital Inputs:
  • 2 × event inputs (contact ON / non-contact ON 1.5 V, 7 mA)
• Display Type: 3-row × 4-digit negative transmissive LCD with backlight
  • PV: 11.8 mm digits, red backlight
  • SV: 8.1 mm digits, green backlight
  • MV: 5.8 mm characters, orange backlight
• Sampling Period: 250 ms (4 Hz)
• Measurement Accuracy:
  • Thermocouple: ±0.3% of indication or ±1 °C
  • RTD: ±0.2% of indication or ±0.8 °C
  • Analog input: ±0.2% FS ±1 digit
• Power Supply: 100–240 VAC, 50/60 Hz
• Operating Temperature: −10 to +55 °C
• Storage Temperature: −25 to +65 °C
• Connection Type: Screw terminals with cover
• Case Color: Black
• Option Unit: Can be mounted (sold separately)
• Product Status: Phasing out
• Standards Compliance: UL, CSA, IEC, CE, EN
• Applications: Industrial heaters, ovens, furnaces, process automation panels, legacy control systems

Why Choose Omron E5EN-R3MT-500-N?

• Three-level PV/SV/MV display for enhanced monitoring
• Multiple auxiliary outputs and event inputs for advanced control logic
• Accurate and stable PID temperature control
• Preventive maintenance support with output ON/OFF counter
• Ideal for maintaining and upgrading existing E5EN-based installations