QJ71LP21-25 Mitsubishi Universal Model Redundant Power Supply Module 5 V DC/3 A
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MITSUBISHI
Product Description
Mitsubishi Universal model Redundant Power Supply Module QJ71LP21-25
QJ71LP21-25 Description
The QJ71LP21-25 is a high-speed optical fiber network module designed for modular PLC systems, supporting both PLC-to-PLC network (control/normal station) and remote I/O network (remote master station) applications. It adopts a dual-loop optical fiber transmission structure, utilizing token ring communication protocol to realize reliable data exchange and distributed control over long distances. This module supports selectable communication speeds (25 Mbps/10 Mbps) and is compatible with multiple types of optical fiber cables, enabling flexible system networking and large-scale industrial automation interconnection. With compact dimensions and robust performance, it serves as a critical component for building stable, high-speed industrial optical communication networks.
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
| Parameter | Specification |
|---|---|
| Model Number | QJ71LP21-25 |
| Product Type | Optical Loop Network Module (Master/Local Station) |
| Network Protocol | MELSECNET/H, MELSECNET/10 |
| Communication Speed | 25 Mbps / 10 Mbps (switch-selectable) |
| Transmission Path | Duplex optical fiber loop |
| Communication Method | Token ring, frame synchronization |
| Coding Mode | NRZI (Non Return to Zero Inverted) |
| Frame Format | HDLC compliant |
| Error Control | CRC (X¹⁶+X¹²+X⁵+1) + timeout retry |
| Max. Stations/Network | 64 (1 control + 63 normal) / 65 (1 remote master + 64 I/O) |
| Max. Total Distance | 30 km (total network) |
| Supported Fiber Cables | SI, H-PCF, broadband H-PCF, QSI optical fibers |
| Max. Link Points | LX/LY: 8,192; LB/LW: 16,384 (H mode) |
| I/O Points Occupied | 32 points (intelligent function module) |
| Internal Power Supply | 5 V DC (from PLC base unit) |
| Current Consumption | 0.55 A (at 5 V DC) |
| Fiber Connector | 2-core optical plug (F06/F08 type) |
| Dimensions (W×H×D) | 27.4 × 98 × 90 mm |
| Weight | Approx. 0.11 kg |
| Operating Temperature | 0°C ~ +55°C |
| Storage Temperature | -25°C ~ +75°C |
| Vibration Resistance | 10 ~ 57 Hz, 0.075 mm amplitude |
| Shock Resistance | 15 g, 11 ms duration |
| Protection Rating | IP2X (front face) |
| Certifications | UL, cUL, CE (EMC/RoHS), KC, LR, NK, DNV, ABS, BV, RINA |
| Sales Status | Discontinued (production ended) |
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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