Overview
The Gefran 1000N-2R-2 is a digital PLC temperature controller designed for industrial automation, HVAC, and refrigeration applications. This unit is a Gefran Elettronica N.5 Self Auto Tuning Temperature Controller model 1000N-2R-2, manufactured in Italy. Built on the proven Gefran 1000 series platform, this controller features microprocessor-based PID control with self-tuning capability for rapid commissioning and reliable operation across a wide range of temperature sensing inputs.
Key Features
- Self-Tuning & Auto-Tuning: Includes self-tuning/auto-tuning, soft-start, and bumpless manual/auto transfer for quick and simple setup without manual parameter entry
- Universal Input Support: Supports thermocouple configuration to suit almost any application, including RTD 2/3-wire PT100 sensors, Type J/K/N/R/S/T thermocouples, and linear millivolt/current signals
- Dual Relay Outputs: Equipped with 2 relay outputs for simultaneous control of heating and cooling circuits or dual-stage operation
- Protective Faceplate: Lexan© membrane faceplate provides a frontal IP54 rating for protection in industrial environments
- Configurable Alarms: Alarm for open circuit load or short circuit probe, with between 1 and 3 configurable alarms
- Serial Communications: Optional RS-485 interface for remote monitoring and integration into larger control systems
Technical Specifications
Detailed specifications for the Gefran 1000N-2R-2:
- Supply Voltage: 100–240 VAC, 6VA
- Output Type: 2 × Relay outputs (5A at 250 VAC / 30 VDC maximum)
- Input Options: Millivolts DC (0–50mV, 10–50mV selectable), 2–10V, 0–10V, 0–20mA, 4–20mA with external shunt, or thermocouple/RTD inputs
- Temperature Display Range: 0–800°C (Type J), 0–999°C (Types K/N/R/S), -100–400°C (Type T), -19.9–99.9°C (RTD PT100 2/3-wire)
- Control Method: PID with ON/OFF option
- Display: LED green display with 4-digit readout
- Faceplate Rating: IP54 (frontal)
- Physical Dimensions: 1/8 DIN panel format (48 × 96 mm front, 100 mm depth)
- Operating Temperature: 0–50°C
- Certifications: CE marked for European industrial use
Typical Applications
- HVAC Systems: Temperature setpoint control for heating and cooling units in commercial buildings and data centers
- Refrigeration: Thermostat control for walk-in coolers, freezers, and process refrigeration circuits
- Industrial Process Control: Manufacturing, chemical and pharmaceutical industries as well as food, packaging, and woodworking machines
- Dual-Stage Control: Simultaneous heating/cooling or heating/heating circuits with independent setpoint and hysteresis control
- OEM Integration: Panel-mounted control for machinery and equipment where space is limited
Compatibility & Replacements
Compatible With
- All thermocouple sensor types (J, K, N, R, S, T)
- RTD Pt100 sensors (2-wire and 3-wire configurations)
- Linear analog inputs (0–10V, 4–20mA)
- Millivolt sensors
- Standard DIN 43700 relay contacts
- 24 VAC/VDC auxiliary power for solenoids and valve coils
Replaces / Drop-In Replacement For
- Gefran 1000N-1R-2 (single-relay version)
- Earlier Gefran Elettronica N.5 units in similar form factor
Works With
- Gefran 1000 series accessory modules and expansion cards
- Standard industrial relays and contactors (up to 5A control output)
- Proportional solenoid valves and electric heaters rated 100–240 VAC
- BMS and SCADA systems via optional RS-485 serial interface
- Any DIN-rail mounted panel system with 1/8 DIN cutout
