Mitsubishi Universal model Redundant Power Supply Module QJ71E71-B5

Mitsubishi Universal model Redundant Power Supply Module QJ71E71-B5

QJ71E71-B5 Description

The QJ71E71-B5 is a specialized Ethernet communication interface module designed for integration into high-performance modular PLC systems. It enables seamless connection of the main controller to industrial Ethernet networks using the 10BASE5 (Thick Ethernet) standard, which relies on rugged coaxial cabling for long-distance, noise-immune data transmission in factory environments. Supporting TCP/IP and UDP protocols, this module facilitates reliable data exchange, remote device monitoring, program upload/download, and inter-PLC communication over a thickwire Ethernet infrastructure. Built for industrial durability, it provides a stable network bridge between the control system and peripheral devices, servers, or other networked equipment.

 

QJ71E71-B5 Key Features

• 10BASE5 Ethernet Compatibility: Dedicated interface for 10BASE5 (Thick Ethernet) networks, supporting long-distance coaxial cable connections.
• 10 Mbps Transmission Speed: Operates at a stable 10 Mbps data rate using half-duplex communication mode.
• Robust Protocol Support: Implements standard TCP/IP and UDP/IP protocols for versatile industrial communication.
• Multi-Connection Capability: Supports up to 16 simultaneous network connections for parallel communication with multiple devices.
• High-Capacity Data Buffers: Equipped with dedicated memory for efficient data handling – 1k words ×16 fixed buffers and 6k words ×1 random access buffer.
• Advanced Network Functions:
  • Remote PLC programming, monitoring, and diagnostics
  • Data link and peer-to-peer communication between PLCs
  • Email notification function for alarms and status updates
  • Password-protected access security
   
• Electrical Isolation: Full galvanic isolation between the PLC system and Ethernet network for enhanced noise immunity and equipment protection.
• Industrial Ruggedness: Designed to withstand high levels of electrical noise, vibration, and temperature variations common in manufacturing settings.
• Standard Mounting: Fits into standard PLC racks, occupying 32 I/O points of slot space.
• Global Certifications: Conforms to international safety and EMC standards including UL, cUL, CE, KC.

QJ71E71-B5 Materials & Applications

Materials

• Housing: High-strength, flame-retardant thermoplastic (ABS/PC) casing for mechanical protection and electrical insulation.
• Connectors: Industrial-grade 15-pin D-Sub (male) connector for reliable attachment to 10BASE5 coaxial cables.
• Internal Circuitry: High-precision PCB with advanced Ethernet controller chip and opto-isolation components.
• Indicators: Long-life LED indicators for Power, Network Link, Data Transmit/Receive, and Error status.
• Internal Components: Industrial-grade microcontroller, memory chips, and isolation transformers for stable operation.

Typical Applications

• Legacy Industrial Ethernet Systems: Integration and maintenance of existing 10BASE5 thick Ethernet factory networks.
• Long-Distance Factory Communication: Connecting PLCs to remote I/O, HMI, or servers over long cable runs (up to 500m per segment).
• High-Noise Manufacturing Environments: Metalworking, mining, and heavy machinery facilities where coaxial cabling offers superior noise rejection.
• Inter-PLC Networking: Establishing communication links between multiple modular PLC controllers in large-scale automation.
• Remote Monitoring & Control: Enabling off-site access to PLC systems for process monitoring, program maintenance, and troubleshooting.
• Data Acquisition Systems: Connecting PLC-based control systems to SCADA servers or manufacturing execution systems (MES).
• Process Control Networks: Stable communication in petrochemical, power generation, and water treatment facilities.

QJ71E71-B5 Important Parameters