QJ71LP21G Mitsubishi Universal Model Redundant Power Supply Module 5 V DC/3 A

Mitsubishi Universal model QJ71LP21G Redundant Power Supply Module

QJ71LP21G Description

QJ71LP21G Key Features

• Dual‑Role Operation: Configurable as master (control) or local (normal) station for flexible network design.
• Duplex Fiber‑Optic Loop: Redundant dual‑ring topology ensures uninterrupted communication during cable or device faults.
• High Noise Immunity: Fiber‑optic transmission eliminates EMI/RFI interference for stable operation in harsh electrical environments.
• High‑Speed Communication: 10 Mbps baud rate supports fast, real‑time data exchange for time‑critical applications.
• Long‑Distance Capability: Up to 2000 m total network length; 550 m max between stations (GI‑50/125 μm fiber).
• Large Data Capacity: Handles up to 8,192 I/O points (LX/LY) and 16,384 link registers (LB/LW).
• RAS Diagnostic Functions: Built‑in loopback testing, cable break detection, and network monitoring for easy maintenance.
• Compact & Low Power: Single‑slot installation with low power consumption for space‑saving integration.
• Multi‑Mode Compatibility: Supports both PLC‑to‑PLC and remote I/O network configurations.

QJ71LP21G Materials & Applications

Materials

• Housing: Flame‑retardant, impact‑resistant thermoplastic alloy (UL94 V‑0 rated) for electrical insulation and mechanical protection.
• PCB: High‑temperature glass‑epoxy laminate with gold‑plated contacts for signal integrity and corrosion resistance.
• Optical Connectors: Nickel‑plated ceramic ferrules (DL6‑CP type) for low‑loss, vibration‑resistant fiber connections.
• Internal Components: Conformal‑coated electronic parts for moisture, dust, and chemical resistance.
• Bracket: Cold‑rolled steel with anti‑rust coating for mechanical stability and grounding.

Typical Applications

• Process Industries: Chemical, oil/gas, and water treatment plants with high electrical noise and long‑distance I/O.
• Manufacturing: Automotive assembly lines, semiconductor fabs, and packaging machinery requiring distributed control.
• Power Generation: Thermal, hydro, and renewable power plants with remote monitoring and control systems.
• Infrastructure: Building automation, airport systems, and railway signaling with EMI‑sensitive equipment.
• Large‑Scale Factories: Centralized control with remote I/O expansion across wide industrial sites.

QJ71LP21G Important Parameters