This processor integrates powerful real-time computing capabilities, complete redundancy mechanisms, and IEC 61508 SIL3 safety certification. It can simultaneously meet the requirements of conventional process control and Safety Instrumented Functions (SIF), enabling the integration of safety and standard control. It is widely used in industrial scenarios with stringent demands for system availability and safety, such as petrochemical, power, metallurgy, and pharmaceutical industries.

Hardware Specifications

1. Processor and Computing Performance

• Core Processor: 32-bit RISC architecture, 800 MHz clock frequency, supporting multi-task real-time processing
• Program Execution: Minimum task cycle of 1 ms, SOE (Sequence of Events) resolution at 1 ms level to meet high dynamic response control requirements
• Control Capacity: Supports up to 250,000 digital/analog I/O points, can host over 10,000 function block instances, suitable for large-scale and complex control systems

2. Memory Configuration

• Working Memory: 16 MB battery-backed RAM (with ECC error checking), used for storing user programs, real-time data and operating status; data retention for long periods after power failure
• Storage Memory: 16 MB Flash for solidifying operating system, firmware and basic control libraries; supports external Compact Flash card for application and data storage expansion
• Real-Time Clock: Built-in battery-backed RTC, supporting time stamping and event synchronization, with accuracy meeting industrial process timing requirements

3. Physical and Electrical Parameters

• Mounting: Standard DIN rail mounting, modular design, compatible with AC 800M series racks
• Dimensions / Weight: Height 185 mm, weight approx. 700 g (including base)
• Power Supply: Powered by system backplane; 1.0 A at 24 V DC, 1.5 A at 5 V DC
• Environmental Adaptability: Operating temperature 0–55 °C, suitable for Class 1, Zone 2 hazardous areas; certified by cULus, AEx nA IIC T4 and other explosion-proof certifications

Core Functions and Technical Features

1. High Integrity and Safety Certification

• Safety Level: Certified to IEC 61508 SIL3 and TÜV, supports 1oo2D architecture for safety control; can independently execute safety interlocks and conventional process control without additional safety controllers
• Diagnostic Capability: Built-in comprehensive hardware/software diagnostics covering CPU, memory, communication and I/O links, with high fault detection rate to meet safety system reliability requirements

2. Full Redundancy Design (Core of High Availability)

• CPU Redundancy: Supports redundant hot-standby pairs; primary/standby controllers synchronize programs, data and status in real time via dedicated fiber-optic links. Failover time < 10 ms for disturbance-free continuous operation
• Communication Redundancy: Dual Ethernet ports supporting RNRP redundancy protocol; CEX bus and I/O links can be redundantly configured to eliminate single points of failure
• Power Redundancy: Compatible with AC 800M series redundant power modules (e.g. SD822) to ensure power supply reliability

3. Abundant Communication Interfaces

• Ethernet: 2 × 10/100 Mbps RJ45 ports, supporting Modbus TCP, Profinet, 800xA System Bus for interconnection and redundant communication between engineering stations, operator stations and controllers
• Serial Interface: 2 × RS-232C ports for local configuration, commissioning and point-to-point communication with third-party devices (e.g. PLC, instruments)
• Fieldbus: Supports mainstream industrial fieldbuses including Profibus DP, Foundation Fieldbus H1, Modbus RTU, CANopen via expansion communication modules (e.g. CI854, CI855), compatible with S800/S900 I/O modules

4. Engineering and Operation & Maintenance Features

• Programming Environment: Compatible with Compact Control Builder and ABB 800xA Control Builder, supports IEC 61131-3 standard programming languages (LD, FBD, ST, SFC), provides safety function block libraries
• Easy Maintenance: Supports hot-swapping; online module replacement without system downtime; LED status indicators clearly display running, fault and redundancy synchronization status

• Remote Management: Supports remote program download, diagnostics and firmware upgrade to reduce on-site O&M costs

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• Application Areas

• Critical Control in Process IndustriesControl of core equipment such as reactors, distillation columns and compressors in petrochemical, oil refining and coal chemical industries, ensuring continuous production and safety interlocking.
• Power System AutomationIntegrated substation automation, power grid monitoring and generator unit control, achieving stable and reliable operation of power generation and transmission.
• Metallurgy & Building MaterialsHigh-temperature and high-pressure complex process control for blast furnaces, converters, cement kilns, etc., adapted to harsh industrial environments.
• Pharmaceutical & Food ProcessingHigh-precision, high-stability process control complying with GMP standards, ensuring product quality and production safety.
• Safety Instrumented System (SIS)As a SIL3-rated safety controller, it implements safety functions including Emergency Shutdown (ESD) and Fire & Gas detection (F&G).