RJ71GP21-SX MELSEC iQ-R GP21-SX CPU Module Mitsubishi Electric PLC Controller

Mitsubishi RJ71GP21-SX module

RJ71GP21-SX CPU module

Redundant RJ71GP21-SX controller

RJ71GP21-SX

Mitsubishi RJ71GP21-SX module is a high-reliability CPU module designed for industrial automation, featuring redundant controller capabilities to ensure continuous operation in critical environments. The Redundant RJ71GP21-SX controller supports seamless system integration and fault-tolerant performance. (196 characters)

Specification

SEODescription

The Mitsubishi RJ71GP21-SX module is a high-performance redundant CPU module designed for mission-critical industrial automation systems. As part of the MELSEC iQ-R series, this Redundant RJ71GP21-SX controller supports seamless dual-CPU synchronization, ensuring uninterrupted operation in industries like power generation, chemical processing, and manufacturing. It features 32 digital inputs and 32 digital outputs directly onboard, with expansion capabilities for up to 64 additional modules via high-speed backplane connectivity. The module supports multiple communication protocols including Ethernet, CC-Link IE Field, and serial interfaces, enabling integration with diverse industrial networks. Operating within a 24 VDC ±10% voltage range and a temperature tolerance of 0–55°C, it excels in harsh environments. Key advantages include millisecond-level redundancy switching, real-time diagnostics, and modular scalability, though its complexity requires specialized programming expertise, and the redundant architecture increases initial deployment costs compared to standard controllers.

SEOSpecification

Parameter	Specification
Product Model	Mitsubishi RJ71GP21-SX module
Module Type	RJ71GP21-SX CPU module with redundancy
Redundancy Function	Dual CPU architecture for Redundant RJ71GP21-SX controller
Processing Speed	0.9 ns/instruction (base performance)
Memory Capacity	512 KB program memory, 1 MB data memory
Communication Interface	Built-in Ethernet (100BASE-TX/10BASE-T) ports
Redundancy Sync Method	Optical fiber cable connection (SX specification)
Hot Standby Switch Time	≤ 50 ms (system recovery time)
Power Supply	DC 24V ±10% (5.0A max)
Operating Temperature	0°C to 55°C (32°F to 131°F)

SEOQandA

question:Why can't you supply discontinued models that others can?
answer:Some suppliers may use remaining stock or refurbished parts, but we prioritize quality and reliability by offering current models only.
question:Why do other suppliers have discontinued items you can't provide?
answer:Suppliers might source from old inventory or unauthorized channels, whereas we adhere to ethical practices and updated product lines.
question:Can shipments apply for low-value declaration?
answer:Low-value declarations depend on destination regulations; we comply legally but cannot guarantee eligibility for all shipments.

SEOQandA_Product

question:How to resolve communication errors with RJ71GP21-SX?
answer:Check physical connections, verify network settings, and ensure all nodes have unique station numbers.
question:Why does RJ71GP21-SX fail to initialize?
answer:Confirm power supply stability, validate parameter settings, and reset the module if necessary.
question:How to troubleshoot slow data transmission?
answer:Optimize network topology, reduce node count per segment, and check for electromagnetic interference.
question:What causes 'Station Number Duplication' errors?
answer:Ensure each device on the CC-Link IE Field network has a unique station number configured.
question:How to recover from firmware update failure?
answer:Reapply the firmware using a stable power source and ensure compatibility with the hardware version.