Q12PRHCPU MELSEC-Q PLC CPU Module, Mitsubishi Electric Programmable Controller

Mitsubishi Q12PRHCPU

Redundant System CPU

Melsec CPU Module

Q12PRHCPU

Mitsubishi Q12PRHCPU is a Melsec Redundant System CPU module designed for high-reliability industrial automation. It features dual-CPU redundancy and fault-tolerant operation to ensure continuous performance in critical applications.

Specification

SEODescription

The Mitsubishi Q12PRHCPU Redundant System CPU is a high-reliability Melsec CPU Module designed for critical industrial automation in sectors like energy, chemical processing, and infrastructure. This dual-processor unit supports direct connection to up to 64 I/O modules through its redundant control buses, with built-in Ethernet, Profibus, and CC-Link interfaces for versatile communication. Operating at 24VDC ±10% within a 0–55°C range, it ensures stability in harsh environments. Its redundant architecture enables seamless failover with sub-millisecond switching, dual power supply compatibility, and synchronized data backup between CPUs. While excelling in mission-critical applications requiring zero downtime, the Q12PRHCPU demands specialized programming expertise and carries higher implementation costs compared to single-CPU solutions, making it ideal for large-scale systems prioritizing fault tolerance over budget constraints.

SEOSpecification

Parameter	Specification
Model Name	Mitsubishi Q12PRHCPU
Type	Redundant System CPU Module
Series	Melsec Q Series
Redundancy Architecture	Hot Standby Redundancy
Memory Capacity	512 KB (Program), 512 KB (Data)
I/O Points Support	Up to 4,096 points
Communication Interfaces	Ethernet; MELSECNET/H; Serial (RS-232/485)
Power Supply	24 VDC ±10%
Operating Temperature	0°C to 55°C
Certification	UL, CE, ISO
Redundancy Switch Time	≤1 ms
Backup Memory	Flash ROM (Built-in)
Weight	0.8 kg

SEOQandA

question:Can I self-schedule official courier pickups?
answer:Yes, you can self-schedule official courier pickups. Please inform us in advance for coordination.
question:Do you provide technical selection services?
answer:Yes, we offer technical selection support. Contact our team for customized solutions.
question:What is the warranty policy?
answer:Our warranty covers defects for 12 months from delivery. Excludes damage from misuse or unauthorized modifications.

SEOQandA_Product

question:How to resolve communication failure between Q12PRHCPU and peripheral devices?
answer:Check communication cables, settings, and ensure correct protocol configuration in GX Works2/3.
question:Why does the Q12PRHCPU not recognize installed modules?
answer:Verify module compatibility, proper slot installation, and reconfigure hardware settings in the software.
question:How to fix program upload errors in Q12PRHCPU?
answer:Ensure correct communication driver selection, cable connection, and PLC mode (STOP/RUN) matches operation.
question:What causes Q12PRHCPU power supply instability?
answer:Inspect input voltage, check for overloaded modules, and ensure proper grounding to avoid fluctuations.
question:How to recover lost programs on Q12PRHCPU?
answer:Use a backup memory card or restore from a previously saved project file via GX Works2/3 software.