Mitsubishi Electric GT1055-QSBD GOT1000 Series Touch Screen HMI Panel

Description

Facilitating reliable real-time machine monitoring and tactile operator input, the Mitsubishi Electric GT1055-QSBD acts as a medium-sized operator control interface within the GOT1000 Series architecture. Equipped with a 5.7-inch STN color liquid crystal display, this HMI supports up to 256 colors at a standard QVGA resolution of 320 x 240 dots, ensuring clear visualization of plant processes. Engineered for demanding industrial environments, the front panel features an IP67F ingress protection rating to withstand dust and oil mist exposure, while its matrix resistive touch panel provides responsive mechanical actuation for critical control sequences.

Key Features

• Optimized Visual Interface: 5.7-type STN color LCD with 16-level contrast adjustment and a high-luminance output of 380 cd/m2.
• Flexible Communication Hardware: Built-in dual serial channels featuring an RS-232 port and a shared RS-422/485 port (on H/W version C and later) for direct PLC connection.
• Industrial Storage Capacity: 3 MB internal flash memory dedicated to OS and project files, supplemented by 128 KB of SRAM for alarm logs, historical data, and recipes.
• Durable Touch Surface: High-reliability matrix resistive film touch panel supporting up to two-point simultaneous press configurations with a rated service life of over one million actuations.
• Efficient Programming Access: Integrated USB Mini-B device port supporting full-speed 12 Mbps transfers for rapid screen design uploads and firmware updates.

Applications

• Discrete automated assembly and conveyor routing lines.
• Control consoles for packaging, labeling, and filling machinery.
• Water treatment, pumping, and small-scale process control enclosures.
• Integrated operator stations on localized CNC and metal-forming machinery.

Technical Specifications

Connections and Interfaces

Empirical Engineering Insights

Alternative Models & Compatibility

When deploying or replacing a GT1055-QSBD, verify the hardware (H/W) revision printed on the unit's rating label. Units categorized under H/W revision A and B strictly employ a dedicated RS-422 interface on the D-sub 9-pin female port. Units belonging to H/W revision C or later house an updated shared RS-422/485 layout, switchable via an integrated termination resistance slider. If migrating from older revisions to version C, ensure that the communication parameters and cabling conform to the new dual-purpose pin configuration.

Application Pitfalls & Engineering Notes

The internal CCFL (Cold Cathode Fluorescent Lamp) backlight is highly sensitive to extreme temperatures. Operating the panel continuously near its 50 degC threshold can accelerate backlight aging. To maximize service lifespan, engineers must implement the Screen Save timer function in GT Designer to turn the backlight off during idle plant periods. Furthermore, the backlight unit in this model is integrated and cannot be serviced or replaced by the end user; physical backlight failure requires full assembly replacement.

Commissioning & Wiring Tips

Because this unit is powered by 24V DC, ripple voltage must be tightly monitored and kept below 200mV. High high-frequency ripple on the DC rail can cause erratic touchscreen touch-coordinate registration or intermittent communications dropouts on the RS-422 path. Always route the 24V DC power line separately from high-voltage AC motor lines, and ensure the HMI chassis is connected directly to a Class D ground (resistance of 100 Ohms or less).

Installation Guidelines