QJ71LP21-25 Mitsubishi Universal Model Redundant Power Supply Module 5 V DC/3 A

Mitsubishi Universal model Redundant Power Supply Module QJ71LP21-25

QJ71LP21-25 Description

QJ71LP21-25 Key Features

• Dual-Loop Redundant Transmission: Adopts duplex loop optical fiber topology, ensuring uninterrupted communication even in case of single-point line failure.
• High-Speed Communication: Supports 25 Mbps (max.) and 10 Mbps selectable transmission rates via mode switch, meeting high-speed data exchange requirements.
• Flexible Network Modes: Operates in both MELSECNET/H and MELSECNET/10 modes, compatible with legacy and new-generation network systems.
• Large Network Capacity: Connects up to 64 stations (1 control + 63 normal) for PLC networks, or 65 stations (1 remote master + 64 remote I/O) for I/O networks.
• Long-Distance Transmission: Supports maximum total network distance of 30 km; compatible with SI, H-PCF, broadband H-PCF, and QSI optical fiber cables.
• Massive Data Link Capacity: Supports up to 8,192 LX/LY points, 16,384 LB/LW points per network for large-scale data sharing.
• Optical Isolation: Full electrical isolation between internal circuits and optical fiber interface, enhancing anti-interference and system safety.
• Compact Design: Slim profile (27.4mm width) for high-density mounting in standard PLC racks, occupying only 1 I/O slot.
• Built-in Diagnostics: Comprehensive self-diagnosis, error detection (CRC & timeout retry), and status indication for easy maintenance.
• Wide Environmental Adaptability: Excellent resistance to vibration, shock, and temperature fluctuations for harsh industrial environments.
• Global Certifications: Complies with UL, cUL, CE (EMC/RoHS), KC, and marine certifications (LR, NK, DNV, ABS), ensuring worldwide applicability.

QJ71LP21-25 Materials & Applications

Materials

• Housing: High-strength, flame-retardant thermoplastic (ABS/PC blend) with good electrical insulation and mechanical durability.
• Optical Interface: 2-core optical fiber connector port (compatible with F06/F08 connectors), precision ceramic ferrule for stable optical coupling.
• Internal Circuitry: Industrial-grade PCB with high-performance optical transceivers, logic chips, and surge protection components.
• Internal Connectors: Gold-plated bus connector pins for reliable electrical contact and anti-oxidation.
• Labeling: Durable silk-screen printing with LED status indicators for power, network, and error status.

Typical Applications

• Manufacturing Automation: Large-scale assembly lines, flexible manufacturing systems with distributed PLC controllers.
• Automotive Production: Interconnected control systems for stamping, welding, painting, and final assembly lines.
• Semiconductor & LCD: High-purity production lines requiring electrical isolation and anti-interference communication.
• Petrochemical & Chemical: Long-distance monitoring and control networks in hazardous and corrosive environments.
• Power Plants: Boiler control, turbine control, and auxiliary system interconnection in thermal/hydropower plants.
• Steel & Metal Processing: Continuous production lines (rolling, casting) requiring high-speed and stable data transmission.
• Marine & Offshore: Shipboard automation and offshore platform control networks (certified for marine applications).
• Water Treatment & Supply: Wide-area pipeline monitoring and pump station control systems.
• Logistics & Warehouse: Automated warehouse, conveyor, and sorting machine network control.

QJ71LP21-25 Important Parameters