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Product Overview
The ABB PM861AK01 (3BSE018157R1) is a core processor module designed for the AC 800M distributed control system platform. As an integral part of ABB’s 800xA control architecture, the PM861AK01 provides high-performance processing power, robust communication interfaces, and support for redundant configurations, ensuring reliable operation in critical industrial environments.
This controller unit features a PowerPC-based CPU, multiple Ethernet ports, serial communication channels, and integrated memory. It is widely used in process automation, power generation, oil and gas, and various other demanding industries where real-time control, system availability, and long-term reliability are essential.
Key Features
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Powerful 48 MHz PowerPC processor architecture.
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Supports redundant CPU configurations with automatic switchover (<10 ms).
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Integrated dual Ethernet ports for network redundancy and communication.
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CompactFlash interface for firmware and application storage.
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Galvanic isolation of communication ports for signal integrity.
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Hot-swappable design for easy maintenance and system upgrades.
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Compatibility with ABB S800 I/O and AC 800M modules.
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Robust metal housing with DIN-rail mounting for industrial environments.
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Compliance with global industry standards (CE, UL).
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Designed for long-term operation in mission-critical systems.
Technical Specifications
| Parameter | Description |
|---|---|
| Model | PM861AK01 |
| Part Number | 3BSE018157R1 |
| Processor | 48 MHz PowerPC |
| RAM Memory | 16 MB |
| CompactFlash Slot | Yes (For firmware and application storage) |
| Ethernet Ports | 2 × RJ45 (CN1, CN2) |
| Serial Ports | COM3 RS-232C, COM4 (galvanically isolated) |
| Redundancy Switchover | < 10 ms |
| Backup Battery | 1 × Lithium Battery (Part No. 4943013-6) |
| Supported I/O | S800 I/O Series, AC 800M Modules |
| Communication | ModuleBus, CEX-Bus, Ethernet |
| Operating Voltage | 24 VDC (19.2–30 VDC) |
| Isolation Voltage | 500 VAC |
| Operating Temperature Range | -20°C to +60°C |
| Storage Temperature Range | -40°C to +85°C |
| Humidity | 5% to 95% Non-condensing |
| Dimensions | 135 × 186 × 119 mm |
| Weight | 1.2 kg |
| Certifications | CE, UL, RoHS Non-compliant (Legacy Product) |
| Mounting | DIN-rail with slide-lock mechanism |
Industry Applications
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Oil & Gas: Real-time control and monitoring in offshore platforms, refineries, and pipelines.
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Power Generation: Automation and safety in thermal, nuclear, and renewable energy plants.
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Chemical Processing: Reliable control of complex chemical and petrochemical processes.
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Pulp & Paper: Optimized production management and quality control.
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Water & Wastewater Treatment: Distributed control and automation for plant operations.
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Pharmaceutical Manufacturing: Precision control for batch processing and regulatory compliance.
Product Advantages
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Redundancy Ready: Supports dual-CPU redundancy for uninterrupted system operation.
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Fast Switchover: <10 ms automatic failover enhances system availability.
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Robust Communication: Dual Ethernet ports and isolated serial interfaces.
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Flexible Storage: CompactFlash slot for application and firmware data.
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Industrial Durability: Withstands harsh environments with wide temperature range and EMC protection.
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Easy Integration: Fully compatible with ABB’s 800xA and S800 I/O platforms.
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Maintenance-Friendly: Hot-swappable design minimizes downtime during servicing.
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Scalable System Architecture: Supports system expansion with additional modules and I/O.
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Global Compliance: Certified for international use with CE, UL standards.
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Legacy System Support: Essential for maintaining and upgrading existing ABB control infrastructures.
Frequently Asked Questions (FAQ)
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What is the processor specification for the PM861AK01?
It uses a 48 MHz PowerPC processor with 16 MB of RAM. -
Is the PM861AK01 compatible with redundant configurations?
Yes, it supports CPU redundancy with bumpless switchover under 10 milliseconds. -
What communication ports are available on the unit?
It includes 2 Ethernet RJ45 ports and 2 serial ports (COM3 RS-232C, COM4 isolated). -
Can the PM861AK01 be hot-swapped?
Yes, the module is hot-swappable for simplified maintenance. -
What type of memory storage is supported?
It supports CompactFlash cards for firmware and application storage. -
Is this controller suitable for new installations?
No, it is a legacy product primarily intended for maintaining existing ABB AC 800M systems. -
What are the environmental specifications?
Operating temperature: -20°C to +60°C; storage: -40°C to +85°C; humidity: 5% to 95% non-condensing. -
What power supply voltage does the PM861AK01 require?
It operates on 24 VDC (19.2–30 VDC range). -
Is the PM861AK01 RoHS compliant?
No, it is a legacy product and does not comply with RoHS directives. -
What system platforms is this controller compatible with?
It integrates with ABB AC 800M control systems, 800xA environments, and S800 I/O.
Related Models
| Model | Description |
|---|---|
| PM860A 3BSE018156R1 | Entry-level CPU for AC 800M with basic performance. |
| PM862K01 3BSE018158R1 | Recommended modern replacement with enhanced features. |
| PM864AK01 3BSE018161R1 | Higher-performance CPU with greater processing capacity. |
| PM865AK01 3BSE018162R1 | SIL-rated High Integrity version for safety applications. |
| PM867K01 3BSE018164R1 | Advanced CPU with enhanced redundancy and networking. |
| PM891 3BSE036352R1 | Compact high-performance CPU with integrated storage. |
Popular ABB Models
| Model | Description |
|---|---|
| CI854A | PROFIBUS DP communication interface for AC 800M. |
| CI871 | PROFINET interface module for industrial networks. |
| SD832 | Power supply module for AC 800M controllers. |
| SB822 | Battery backup unit for CPU memory retention. |
| DI830 / DO810 | Digital input/output modules for system expansion. |
| AI810 / AO820 | Analog input/output modules for process control. |
