Mitsubishi QY71 - Programmable Logic Controller

The Mitsubishi QY71 is a compact yet powerful transistor output PLC module engineered for demanding industrial environments. With 32 integrated digital outputs and sink output logic, this module ensures smooth signal switching in automation setups requiring a rated load voltage of 5–12 VDC. Operating on a 12–24 V DC power supply and drawing just 0.15 A of internal current, the QY71 is optimized for power-sensitive control cabinets without compromising performance.

Its small footprint—just 27.4 mm wide and 98 mm high—saves valuable panel space, while the connector-type wiring enhances installation speed and cable management in high-speed assembly lines and modular systems. The QY71 is part of Mitsubishi’s globally recognized MELSEC-Q Series, known for modularity, reliability, and ease of integration across SCADA, DCS, and PLC architectures. The build quality and signal integrity make it a dependable choice for both OEM manufacturers and system integrators focused on long-term reliability and reduced downtime.

This module stands out for applications where fast and accurate output switching is required, such as packaging lines, material handling systems, and machine tools. Trusted by automation engineers across industries, the QY71 offers a balanced mix of performance, compactness, and durability. The Mitsubishi QY71 PLC is widely deployed in industries where fast, repeatable DC output control is critical. It’s commonly used in automated assembly lines, food and beverage machinery, semiconductor processing equipment, and customized control panels for factory automation.

Thanks to its connector-based wiring and compact form factor, the QY71 simplifies installations in tight spaces, making it ideal for retrofits and upgrades. Maintenance engineers benefit from its dependable sink output logic for operating actuators, indicator lamps, relays, and low-voltage devices. It helps reduce wiring errors and downtime by offering consistent performance across extended operation cycles.

For students, OEM designers, and senior control engineers alike, the QY71 PLC serves as a reliable component for building scalable and responsive automation systems. Its compatibility with other MELSEC-Q modules allows for future system expansion, while its robust electrical design ensures long-term stability under continuous load conditions.