Q12PRHCPU MELSEC-Q Mitsubishi Electric Programmable Controller CPU Redundant Control

Product Overview

The **Q12PRHCPU** is a high-performance redundant control CPU module in Mitsubishi Electric's MELSEC-Q series programmable controllers, designed specifically for critical industrial automation scenarios requiring 24/7 uninterrupted operation. This module employs a dual-CPU hot standby architecture, implementing triple protection mechanisms—CPU redundancy, power supply redundancy, and network redundancy—on top of the process control CPU. System switching time can be as fast as 40ms, making it an ideal choice for industries with high reliability requirements such as oil and gas, chemical, power, and water treatment.

Core Functions and Advantages

1. **Triple Redundancy Architecture for Extremely High System Reliability**

- **CPU Redundancy**: The main control CPU and backup CPU synchronize data in real time via a high-speed hot-standby cable (QC10TR/QC30TR) for seamless switching.

- **Power Supply Redundancy**: Supports Q63RP/Q64RP redundant power supply modules, ensuring continuous and stable system operation even in the event of a single power supply failure.

- **Network Redundancy**: Compatible with MELSECNET/H dual-network redundancy architecture, automatically switching over in case of network failure to ensure uninterrupted communication.

2. **High-Speed ​​Processing Capability**

- Basic instruction processing speed is only 34ns (LD X0 instruction)

- MOV D0 D1 instruction execution time is 102ns

- Built-in 496KB program memory, supporting a program capacity of 124K steps

- Supports a constant scan function from 0.5 to 2000ms, ensuring control cycle stability.

3. **Powerful Expansion Performance**

- Supports up to 4096 I/O control points, with up to 8192 I/O device points. Connects up to 7 expansion boards (Q38RB/Q68RB/Q65WRB redundant boards)

- Supports USB and RS-232 dual-interface programming and debugging

- Expandable with SRAM/Flash memory/ATA memory cards (Q2MEM/Q3MEM series)

4. **Rich Process Control Functions**

- Built-in dedicated process control instruction set

- Supports device tracking function, maximum data transfer of 100KB

- Provides dedicated CC-Link IE and MELSECNET/H link devices

- Direct access to intelligent function module buffer memory

5. **Convenient Maintenance and Diagnostics**

- Supports external forced I/O ON/OFF function for easy on-site debugging

- Standard ROM automatic write function for more reliable program backup

- Remote password setting function for enhanced system security

- Lightweight 0.3kg design for easy DIN rail mounting

Detailed Technical Specifications

| Item | Specifications |

| **Model** | Q12PRHCPU |

| **Brand** | Mitsubishi Electric | | **Product Category** | Q Series Redundant Control CPU Module |

**Program Capacity** | 124K steps |

**I/O Points** | 4096 points |

**I/O Device Points** | 8192 points |

**Program Memory Capacity** | 496KB |

**Processing Speed** | LD instruction: 34ns; MOV instruction: 102ns |

**Dual-function Execution Time** | 48KB memory: 10ms; 100KB memory: 15ms |

**Hot Standby Cable** | QC10TR (1m), QC30TR (3m) |

**Peripheral Interfaces** | USB (for programming), RS-232 (for debugging) |

**Memory Card Interface** | Supports SRAM/Flash/ATA cards |

**DC5V Internal Current Consumption** | 0.89A |

**Operating Temperature** | 0～55℃ |

**Storage Temperature** | -25～75℃ | **Relative Humidity** | 5～95%RH (non-condensing) |

**Weight** | 0.3kg |

**Certification Standards** | CE, UL, cUL |

Typical Application Scenarios

1. Petrochemical Industry

- Distributed control system for oil refining units

- SCADA system for natural gas processing plants

- Safety instrumented system (SIS) for chemical production lines

2. Power Energy Sector

- Auxiliary control system for thermal power plants

- Substation automation system

- Renewable energy power generation monitoring system

3. Water Treatment and Environmental Protection

- Integrated automation of waterworks

- Process control of wastewater treatment plants

- Redundancy control of seawater desalination units

4. Smart Manufacturing

- Critical station control in automotive production lines

- Environmental monitoring in semiconductor cleanrooms

- Batch processing systems in the pharmaceutical industry

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