Controller & Programmer - Type GFX Termo4 | Gefran

Name: Controller & Programmer - Type GFX Termo4 | Gefran
Brand: Gefran
SKU: Controller & Programmer - Type GFX Termo4 | Gefran

Gefran GFX-TERMO4 Controller

The Gefran GFX-TERMO4 is a modular 4-zone process controller designed for DIN rail or panel mounting. Each zone operates as an independent PID heat/cool loop with process input, CT input or auxiliary analog input, main control output, and cooling output. Suitable for distributed temperature control in industrial automation panels.

Process Inputs

Four main inputs support thermocouples J, K, R, S, T, Pt100, 0–60 mV, 0–1 V, and 0/4–20 mA. Main input accuracy is 0.2% f.s. ±1 digit at 25°C, with 120 ms sampling. Optional: four auxiliary analog inputs or four 50 mAac CT inputs for load monitoring. Input selection allows adaptation to various sensor types and process requirements.

Outputs and Control

OUT1–OUT4 are dedicated to heating. OUT5–OUT8 (depending on model) are configurable for cooling or auxiliary functions and can be relay 3 A, logic 24 Vdc, triac 230 Vac / 4 A, or analog 0/2–10 V and 0/4–20 mA. Two 5 A alarm relays are included. Output configuration supports integration with contactors, SSRs, or analog actuators.

Diagnostics Functions

Supports on/off, PWM, PID heat/cool, self-tuning, continuous and one-shot autotuning, soft-start, power limitation 0–100%, LBA and HB alarms. Load diagnostics detect open load or absence of voltage at SCR under control command. Diagnostic features assist in preventive maintenance and fault detection.

Communications

Standard RS485 Modbus RTU port. Optional second fieldbus port supports Modbus RTU, CANopen, DeviceNet, Profibus DP, Ethernet Modbus TCP, Ethernet/IP, EtherCAT, and Profinet. Node address set via rotary switches. Enables integration with PLCs and SCADA systems for distributed control architectures.

Typical Applications

Multi-zone temperature control in injection moulding
Thermoforming and packaging machinery
Thermal zones with SSR, triac, or contactor outputs
Heating/cooling loops with resistance monitoring
Decentralized I/O in PLC and fieldbus-based machines

Operating Conditions & Standards

Supply voltage 24 Vdc ±25%, max 9 VA. Protection class IP20. Operating temperature 0–50°C, storage -20–70°C. Complies with EN 63000, EN 61326-1, EN 61010-1, UL 61010-1, and CAN/CSA-C22.2 No. 61010.1 for process control equipment. Suitable for industrial environments requiring compliance with international standards.

Datasheet and documents

Description

Technical specifications

Overview

GFXTERMO4 is a multi-loop control system that controls four process loops in a completely independent manner. Configuration of I/O resources is very rapid and flexible thanks to a programming tool that guides the user in the selection of parameters. Each control loop has:

• Process input

• Input for external CTs or CT / linear input

• Control output

• Cooling output Other auxiliary I/Os:

• Two digital inputs

• Two relay outputs

The use of two independent serial ports provides efficient communication ability. The two serials are defined as follows:

• “local bus” to create a GFXTERMO4 network and connect it to an operator panel or industrial PC. Uses Modbus RTU protocol and reaches a speed of 115 Kbps.

• “field bus” to integrate with architectures that already use industrial field buses such as: Profibus DP, CANopen, DeviceNet, Modbus RTU, Ethernet Modbus TCP.

The presence of “intelligence” directly on the board lets the user create fully independent and reliable controls. The device installs on the DIN rod or with two M4 screws.