3.1 General Overview
This controller serves as an edge decentralized computing node of the Ovation expert control system, capable of independently executing closed-loop PID regulation, sequential control SFC logic, safety interlock protection and SOE sequence-of-events recording locally. It realizes bidirectional data interaction with field I/O modules, local actuators, upper operator stations, engineer stations, SIS safety instrument systems and plant-level monitoring platforms through diversified communication interfaces. Different from traditional rack plug-in DPUs, it adopts compact box-type installation design, supports DIN rail mounting, applicable to both centralized control cabinet and on-site decentralized cabinet layout scenarios. Factory-certified aging testing guarantees stable long-term operation for non-stop production lines.
3.2 Core Functional Characteristics
3.2.1 Powerful Computing & Non-Volatile Storage
Embedded high-performance industrial-grade processor with powerful floating-point arithmetic capacity, capable of parallel executing dozens of control loops and complex interlock logics simultaneously. Onboard large-capacity non-volatile flash memory permanently stores user control programs, PID parameters, historical fault records and trend snapshot data; key configuration parameters will not be lost after power failure.
3.2.2 Abundant Multi-Port Communication Expansion
Integrates multiple independent RJ45 industrial Ethernet ports, USB interfaces and serial communication terminals on the panel, supporting Ovation proprietary control network, standard TCP/IP, Modbus TCP/RTU and other common industrial protocols. It can seamlessly interconnect with remote expansion I/O racks, third-party auxiliary equipment and upper management systems, flexible to build distributed automation topology.
3.2.3 Redundancy & Online Upgrade Compatibility
Supports dual redundant hot standby deployment; master and slave controllers synchronize operation variables, intermediate calculation results and output states in real time, realizing millisecond-level bumpless automatic switchover without disturbing field production loops. Adopts open standard hardware architecture, supports incremental hardware upgrade without rewriting verified control logics and monitoring screens, avoiding large-scale system reconstruction costs.
3.2.4 Comprehensive Built-In Self-Diagnosis
Real-time monitors CPU operating status, memory health, each communication link state, internal power supply voltage and bus interaction status. Fault codes and abnormal alarm messages are automatically uploaded to the Ovation monitoring system for remote troubleshooting. Local panel LED indicators directly display running state, master-slave status and fault prompts for fast on-site inspection.
3.2.5 Flexible Installation & Maintenance
Compact box structure supports standard DIN rail mounting and cabinet fixed installation; no need for special backplane slot matching. Supports remote program online download, partial logic modification and non-stop loading, local maintenance workload is greatly reduced.
3.3 Key Electrical & Environmental Technical Parameters
Origin: United States
Net Weight: 1.42 kg
Installation Mode: DIN rail mounting / cabinet fixed installation
Communication Interfaces: Multiple RJ45 Ethernet ports, USB 2.0, serial RS232/RS485 terminals
Operating Temperature: 0 ℃ ~ +60 ℃
Storage & Transportation Temperature: −40 ℃ ~ +85 ℃
Relative Humidity: ≤95% RH, non-condensing
EMC Standard: Complies with industrial G3 anti-corrosion grade and power plant cabinet anti-electromagnetic interference requirements
Input Power: Standard industrial DC power supply, low power consumption design
3.4 Front Panel LED Indicator Definition
RUN LED (Green): Periodic normal flashing = controller operates normally; steady ON/OFF = program halt or hardware failure
MASTER LED: Illuminated when working as master controller; OFF for slave standby mode
COMM LED: Flashing continuously = normal data transmission with I/O modules and upper network
FAULT LED (Red): Lights up for hardware fault, communication disconnection, program exception or power abnormality, fault status latched for maintenance confirmation
3.5 Application Scope
Thermal Power Generation Industry: Used as edge control node for boiler auxiliary equipment, turbine local auxiliary system and flue gas treatment system control cabinets, undertaking combustion auxiliary regulation, equipment sequential startup/shutdown and local safety interlock calculation.
Petrochemical Industry: Deployed in reactor local cabinets, fractionator auxiliary unit control boxes and pipeline delivery field control stations, realizing on-site closed-loop regulation, emergency shutdown interlock and local data caching.
Metallurgy, Waste Incineration Power Plants & District Heating Stations: Applied to heating furnace on-site control boxes, rolling mill auxiliary drive cabinets and heat exchange station decentralized control nodes, completing local constant temperature control, equipment linkage adjustment and unattended automatic operation.
Other Process Industries: Water treatment plants, pulp & paper mills and large pumping stations adopt this module for decentralized edge control, reducing central DPU computing load and improving system overall operation reliability.
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