Description
METSO DPU-MR
Technical Specifications: Dual redundant hot backup architecture; 32-bit industrial processor; built-in large-capacity non-volatile memory; backplane bus high-speed communication; operating temperature range 0℃ to +60℃; watchdog hardware monitoring circuit; protection class IP20; supporting redundant power supply configuration.
Functional Features: Complete continuous control and sequence logic control; real-time data acquisition and processing; redundant hot swap operation; hardware watchdog fault monitoring; automatic master-slave seamless switching; data synchronization between master and slave controllers; upload operation and fault information to upper monitoring system.
Application Scenarios: Main control cabinet of pulp and paper production line; boiler and turbine main control cabinet of thermal power plant; continuous reaction process control cabinet of chemical plant; mineral processing centralized control cabinet; large water treatment main control station.
Performance Parameters: Fast logic execution cycle; zero data loss during redundant switching; stable long-running calculation performance; fully comply with industrial EMC anti-interference standards; support 7×24 hours uninterrupted continuous operation.
Material Composition: Glass fiber epoxy multilayer PCB circuit board; high-performance industrial processor chip; high-capacity storage chip; gold-plated backplane connector; metal front panel; circuit board coated with three-proof protective coating for moisture-proof, dust-proof and anti-corrosion.
Structural Features: Rack plug-in modular structure; front panel equipped with LED indicators for power, running, master/slave status and fault alarm; rear gold-plated connector connects to system backplane bus; internal circuit separates core computing unit and communication unit; panel fitted with mechanical locking buckle.
Working Principle: Master controller executes real-time control logic and collects I/O data through backplane bus. Slave controller keeps synchronous data backup with master controller all the time. Hardware watchdog continuously monitors the operating state of master controller. Once master controller fails, the system triggers automatic switching. Slave controller immediately takes over all control tasks without interruption of process control.
Installation Requirements: Install two DPU-MR modules in designated redundant slots of MaxPAC main rack. Match with redundant power supply module. Use dedicated communication cable for system network connection. The cabinet protective grounding terminal must be connected reliably. Reserve sufficient ventilation space around the module for heat dissipation.
Precautions for Use: Cut off rack backplane power before module disassembly. Wear anti-static wristband during operation. Regularly check the synchronization status of master and slave controllers. Keep the cabinet humidity between 20% and 80% without condensation. Prevent dust accumulation on the surface of controller board.
