Schneider Electric HMIG3U PLC Controller Module
The Schneider Electric HMIG3U (Magelis G3U) is an advanced HMI controller that combines a touch screen operator panel with a built-in PLC logic engine. This integrated device eliminates the need for a separate PLC for small to medium automation tasks. It features a 7" or 10.4" color TFT display (varies by variant, base model 7") with 800x480 resolution, resistive touch, and a 32-bit RISC processor running Vijeo Designer runtime.
Logic Control Capabilities
The HMIG3U incorporates a logic controller compliant with IEC 61131-3. It supports up to 8192 I/O points via expansion modules (Modicon TM3 or TM5). Programming languages: ladder diagram (LD), function block diagram (FBD), structured text (ST), and instruction list (IL). Execution cycle time: 5 ms for 1000 instructions. Memory: 32 MB RAM, 128 MB flash for application and data logging.
Embedded I/O and Communication Ports
Onboard I/O: 2 digital inputs (24V DC), 2 relay outputs (2A), and 1 analog input (0–10V or 4–20mA). Communication:
2 x Ethernet ports (10/100) with integrated switch, supporting Modbus TCP, Ethernet/IP, and PROFINET.
1 x RS-232C (9-pin) for serial devices.
1 x RS-485 (sub-D 9) for Modbus RTU.
2 x USB host (Type A) for keyboard, mouse, or flash drive.
1 x USB device (Type B) for programming.
Display and Operator Interface
The 7-inch TFT screen (model HMIG3U, variant HMIG3U7) offers 500 cd/m² brightness, 600:1 contrast, and LED backlight (50,000 hours life). Touch panel: 4-wire resistive, supports gloved operation. Screen protection: an anti-glare coating and a 3mm polycarbonate overlay. The front bezel meets IP66/NEMA 4X when properly mounted. Function keys: 5 programmable tactile keys.
Real-Time Data and Alarming
The device can log up to 10,000 alarm events with time stamps (RTC battery backed). Data logging to USB or internal flash in CSV format. It includes a web server for remote monitoring and supports email alerts via SMTP.
Power and Environment
Supply voltage: 24V DC (20.4–28.8V). Power consumption: 15W typical. Operating temperature: 0 to 50°C; storage: -20 to 70°C. Humidity: 10% to 90% non-condensing. Vibration: 2 g (10–150 Hz). Shock: 15 g. Dimensions: 212 mm width x 152 mm height x 48 mm depth. Weight: 1.1 kg. Cutout: 194 x 138 mm.
Programming Software
Vijeo Designer (version 6.2 or later) is used for both HMI screens and logic programming. The software integrates PLC logic and HMI variables in a single project. The controller supports simulation and online debugging. The firmware can be updated via USB or Ethernet.
Expansion Modules
Up to 16 TM3 expansion I/O modules (digital, analog, temperature) can be attached via the rear bus. For distributed I/O, the HMIG3U can act as a Modbus TCP master to 32 slaves. It also supports CANopen via a TM3 gateway module.
Certifications and Compliance
CE, UL 61010-1, cUL, CCC, and RoHS. The HMIG3U is also ATEX Zone 2 (gas) and Class I Div 2 (hazardous locations) approved. Manual: Magelis G3U User Guide (EIO0000002456).
Typical Applications
Compact machine control (packaging, labeling, small conveyors), pump stations, and test benches. The integrated HMI reduces panel space and wiring.
