Description
Detailed Parameter Table


| Parameter Name | Parameter Value |
| Product Model | PM858 3BSE093350R1 |
| Manufacturer | ABB |
| Product Category | High-Performance Process Controller |
| Processor | Dual ARM Cortex-A9 @ 1.0 GHz (Redundant Cores) |
| Memory | 1 GB DDR3 RAM / 4 GB Flash (User Program) |
| Safety Certification | SIL 2 (IEC 61508) |
| Backplane Interface | S800 I/O High-Speed Bus (100 Mbps) |
| Communication Ports | 2x Ethernet (1 Gbps), 1x RS-485, 1x USB 2.0 |
| Protocol Support | Modbus TCP, OPC UA, PROFINET, EtherNet/IP |
| Power Supply | 24 VDC ±10% (Redundant Input Capable) |
| Operating Temperature | -25°C to +70°C |
| MTBF | > 250,000 hours (IEC 61709 Verified) |
| Certifications | UL, ATEX Zone 2, IEC 61131-2, DNV-GL |
Product Introduction
The ABB PM858 3BSE093350R1 represents the pinnacle of ABB’s AC 800M controller series, engineered for mission-critical process automation in demanding industrial environments. This high-availability controller serves as the computational backbone for distributed control systems (DCS), integrating complex regulatory control, sequence logic, and safety instrumented functions within a unified platform. The PM858 3BSE093350R1 features dual ARM Cortex-A9 processors with hardware-assisted redundancy switching, enabling seamless failover during processor faults without disrupting control loops.
Designed for ABB’s Symphony® Plus and 800xA automation architectures, this controller excels in large-scale applications requiring deterministic execution of >5,000 function blocks at 50 ms scan rates. The ABB PM858 3BSE093350R1 bridges operational technology (OT) and information technology (IT) domains through native OPC UA Pub/Sub support, facilitating secure data exchange with MES and cloud platforms. Its technical positioning targets industries where controller downtime costs exceed $1M/hour – including power generation, oil refining, and continuous chemical processes – providing unparalleled reliability through patented “Hot Standby” redundancy technology.
ABB PM858 3BSE093350R1
Core Advantages and Technical Highlights
Deterministic Performance:
The dual-core architecture executes safety and standard control in partitioned environments, achieving 10 ms task cycle times with jitter <100>
Cyber-Secure Architecture:
Integrated Trusted Platform Module (TPM) 2.0 enforces secure boot, firmware signature verification, and encrypted configuration storage. Role-based access control (RBAC) aligns with ISA/IEC 62443 standards, preventing unauthorized logic modifications.
Advanced Diagnostics:
Real-time health monitoring tracks:
CPU load distribution
Memory utilization
Network latency
I/O subsystem errors
Diagnostic events generate predictive maintenance alerts via Control Builder M engineering station.
Scalable Connectivity:
Dual gigabit Ethernet ports support ring (HIPER-Ring) and star topologies with <3>PM858 3BSE093350R1 simultaneously operates as PROFINET Controller and EtherNet/IP Adapter, enabling hybrid device integration.
Extreme Environment Resilience:
Conformal coated electronics withstand 95% humidity and corrosive atmospheres. Vibration resistance (5g @ 10-150Hz) ensures stability in turbine control applications.

ABB PM858 3BSE093350R1
Typical Application Scenarios
Power Generation: Coordinates boiler-turbine control (BTC) for 1000MW+ supercritical units, executing feedwater regulation and burner management at 100ms intervals.
Oil Refining: Manages FCCU reactor-regenerator pressure balancing with model predictive control (MPC) algorithms.
Pharmaceutical Batch Processes: Enforces ISA-88 recipes with electronic batch records (EBR) for FDA 21 CFR Part 11 compliance.
Pulp & Paper: Controls continuous digesters with adaptive Kappa number optimization, reducing chemical usage by 15%.
Water Desalination: Implements reverse osmosis membrane fouling control through multivariable analytics.
In LNG liquefaction trains, the PM858 3BSE093350R1 orchestrates cascade refrigeration compressors, maintaining -162°C process stability during ship loading transients. Its SIL 2 capability allows consolidation of safety functions like flame detection and gas suppression.
Related Model Recommendations
PM861: Compact controller for standalone machinery (same programming environment)
CI871: Profibus DP interface module for field device integration
SAI23: Safety Application Interface for DCS connectivity
SD822: 16-channel digital input module for PM858 I/O racks
TA523: Redundancy kit for hot-standby controller pairing
CP635-T: Operator panel with dedicated PM858 diagnostics view
DSQC679: Industrial Ethernet switch for control network
BC810: Battery-backed real-time clock module
SD833: HART-enabled analog input module
Installation, Commissioning and Maintenance Instructions
Installation Preparation:
De-energize rack and verify ESD protection. Use ABB-approved 24VDC power supplies (PS915/PS945). Reserve adjacent slot for redundancy module if required. Maintain 50mm clearance above controller for heat dissipation. Ground chassis to <1>
Commissioning:
Load firmware via USB recovery port
Configure redundancy using Control Builder M (v11+ required)
Validate switchover with simulated processor fault
Tune watchdog timer settings per application criticality
Maintenance Protocol:
Monthly: Check CPU load trends in System 800xA Diagnostics
Quarterly: Verify backup battery status (>2.8V)
Annually: Perform forced failover test
Replace units reporting >3 unexpected restarts/month
Always use ABB Drive Composer for firmware updates



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