Providing operator visualization and machine-level control, the Mitsubishi Electric GT1050-QBBD-C serves as a reliable interface for complex industrial automation environments. This 5.7-inch monochrome display terminal integrates seamlessly with MELSEC controllers and third-party PLCs, offering a compact footprint without compromising diagnostic depth or operational control.

Key Features

• Monochrome STN Display: High-contrast 5.7-inch screen with a 16-scale gray level for clear graphic and text representation.
• Resistive Touch Interface: Matrix resistive film touch panel supporting up to 50 touch keys per screen for precise operator inputs.
• Integrated Backlight Protection: Cold cathode fluorescent tube (CCFL) backlight featuring automatic shutoff detection and configurable screen-saver modes to prolong service life.
• Industrial Durability: Robust front-panel construction designed to withstand harsh manufacturing environments.
• Flexible Communication: Built-in serial interfaces for direct PLC connection and system programming.

Applications

• Automotive assembly lines and conveyor control stations.
• Packaging machinery and automated labeling systems.
• Water treatment facilities and localized pump control panels.
• HVAC monitoring and environmental chamber management.

Technical Specifications

Connections and Interfaces

Empirical Engineering Insights

Alternative Models & Compatibility

The GT1050-QBBD-C is a legacy GOT1000 series HMI. When replacing older units or planning system migrations, note that screen projects created in GT Designer2 or GT Designer3 can be converted directly to the newer GOT2000 series (such as the GT2105-QBD). However, physical cutout dimensions and mounting depths vary slightly between generations; verify panel clearance before executing a hardware upgrade.

Application Pitfalls & Engineering Notes

The CCFL backlight in this unit is integrated and cannot be serviced or replaced by the end user. To maximize the operational lifespan of the display, always configure the "Screen Saving / Backlight Off" timer in the system utility menu. In environments subject to low temperatures (near 0 degC), the STN liquid crystal response time slows down, which can cause temporary ghosting of fast-moving graphic objects. Adjust the screen contrast via the system menu to compensate for thermal drift.

Commissioning & Wiring Tips

Ensure that the Functional Ground (FG) terminal is connected directly to a dedicated class-D ground point (resistance of 100 ohms or less). Running the HMI without a solid ground connection can lead to capacitive noise buildup on the resistive touch grid, resulting in phantom touch inputs or communication dropouts on the RS-422 serial line. Route all serial communication cables in separate grounded metal conduits away from high-current AC motor leads.

Installation Guidelines