QJ71LP21G Mitsubishi Universal Model Redundant Power Supply Module 5 V DC/3 A
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MITSUBISHI
Product Description
Mitsubishi Universal model QJ71LP21G Redundant Power Supply Module
QJ71LP21G Description
The QJ71LP21G is a high‑speed optical duplex loop network module designed for programmable controller systems, serving as both master and local station in fiber‑optic industrial networks. It enables reliable, long‑distance data communication between controllers and distributed I/O devices via GI‑50/125 μm multimode fiber, supporting both PLC‑to‑PLC and remote I/O network modes at 10 Mbps transmission speed. With dual‑loop redundancy and robust noise immunity, it is ideal for large‑scale, EMI‑prone industrial environments requiring stable real‑time control.
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
| Parameter | Specification |
|---|---|
| Part Number | QJ71LP21G |
| Module Type | Optical Duplex Loop Network Module |
| Network Topology | Duplex Fiber‑Optic Ring (Dual‑Loop) |
| Station Type | Master / Local (configurable) |
| Supported Network | PLC‑to‑PLC, Remote I/O Network |
| Transmission Speed | 10 Mbps |
| Fiber Type | GI‑50/125 μm Multimode Fiber |
| Max. Total Distance | 2,000 m |
| Max. Station‑to‑Station Distance | 550 m |
| Max. Network Stations | 65 (1 Master + 64 Remote I/O Stations) |
| Link I/O Points (LX/LY) | 8,192 Points |
| Link Registers (LB/LW) | 16,384 Points |
| Per‑Station I/O Limit | X + Y ≤ 4,096 Points |
| Communication Protocol | Token Ring, Full‑Duplex, HDLC Compliant |
| Error Control | CRC‑16 (X¹⁶+X¹²+X⁵+1), Timeout Retry |
| I/O Occupancy | 32 Points (Intelligent) |
| Power Consumption | 0.55 A @ 5 V DC |
| Dimensions (W×H×D) | 27.4 mm × 98 mm × 90 mm |
| Weight | 0.11 kg |
| Operating Temperature | 0 °C to +40 °C |
| Storage Temperature | −25 °C to +75 °C |
| Protection Class | IP20 |
| Certifications | UL, cUL, CE (EMC/RoHS), KC, LR, NK, DNV, ABS, RINA, BV |
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Company
Shenzhen Wisdomlong Technology CO.,LTD
Location
23E BlockB,Lushan Building，Chunfeng Road,Luohu District,Shenzhen,518001,China
Contact Person
Becky