Excellent PLC
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Product Introduction
The ABB PM891K02 (Part No: 3BSE053242R1) is a high-performance CPU module designed for the AC 800M controller family, part of the ABB 800xA distributed control system (DCS). It delivers reliable and scalable control functions for various industrial automation environments, including power generation, oil & gas, chemical, and manufacturing industries. As an essential part of a modular and redundant control architecture, the PM891K02 supports complex process control applications requiring high availability and advanced functionality.
This CPU module includes the PM891 processor, Battery Back-up Unit (BBU), CompactFlash memory card, and baseplate with built-in I/O capabilities. Its design prioritizes robustness, long-term operation, and fast communication with other system components.
Product Features
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Powerful 32-bit RISC processor with integrated floating-point unit
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Support for large-scale applications with up to 10,000 I/O points
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Hot-swap functionality for easy replacement and maintenance
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Dual Ethernet ports for redundant communication or separate networks
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Real-time clock and battery backup for non-volatile data retention
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CompactFlash support for application storage and firmware upgrades
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Integration with ABB’s Control Builder and Plant Explorer tools
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Redundancy and high availability options for critical applications
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Built-in diagnostics and event logging
Technical Specifications
| Parameter | Specification |
|---|---|
| Model Number | PM891K02 |
| Part Number | 3BSE053242R1 |
| Processor Type | 32-bit RISC processor with floating-point unit |
| Clock Frequency | 200 MHz |
| RAM | 32 MB SDRAM |
| Flash Memory | 16 MB internal + CompactFlash card support |
| Ethernet Ports | 2 × RJ45 (10/100 Mbps) |
| Battery Backup | Yes (BBU included) |
| Real-Time Clock | Integrated with battery backup |
| Power Supply Voltage | 24 VDC |
| Power Consumption | 5 W |
| Operating Temperature | 0 to +55 °C |
| Storage Temperature | -40 to +70 °C |
| Dimensions | 94×186×174 mm |
| Weight | 4 kg |
| Mounting Type | DIN rail or mounting plate |
Product Applications
The ABB PM891K02 is widely deployed in demanding industrial control scenarios such as:
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Power Generation (Turbine and boiler control)
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Oil & Gas (Upstream and downstream automation)
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Chemicals & Petrochemicals (Batch and continuous process control)
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Pulp & Paper (Production line monitoring)
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Metals and Mining (Ore processing, blast furnace control)
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Water and Wastewater (Pump stations, filtration systems)
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Manufacturing Automation (Assembly lines, robotics coordination)
Product Advantages
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High Performance: Handles large-scale, time-critical applications with low latency.
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Modular Scalability: Easily expandable with I/O modules and network extensions.
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Integrated Redundancy: Supports CPU redundancy to reduce downtime.
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Comprehensive Toolset: Fully compatible with ABB’s 800xA engineering suite.
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Robust Design: Industrial-grade durability with extended temperature tolerance.
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Field-Proven Reliability: Backed by ABB’s global service and long product lifecycle.
Frequently Asked Questions (FAQ)
Q1: What is included in the PM891K02 kit?
A1: The kit includes the PM891 CPU module, baseplate, CompactFlash card, and battery backup unit (BBU).
Q2: Can the PM891K02 operate in redundant configurations?
A2: Yes, it fully supports redundant CPU configurations for high-availability systems.
Q3: Is the module programmable with standard IEC 61131-3 languages?
A3: Yes, it supports multiple languages including Function Block, Ladder Diagram, and Structured Text.
Q4: What engineering tools are used with the PM891K02?
A4: It is configured using ABB Control Builder M and integrated with the 800xA system.
Q5: Can I hot-swap the CompactFlash card?
A5: Yes, the CompactFlash card is hot-swappable and stores firmware and application data.
Q6: What communication protocols are supported?
A6: It supports Ethernet/IP, MODBUS TCP, and other fieldbus protocols via communication modules.
Q7: Is the module certified for industrial environments?
A7: Yes, it complies with international standards such as CE and UL for industrial automation.
Q8: How many I/O channels does it support?
A8: It can handle up to 10,000 I/O points depending on system architecture.
Q9: What’s the purpose of the BBU (Battery Backup Unit)?
A9: The BBU ensures data retention in case of power loss and maintains the real-time clock.
Q10: What is the typical service life of this CPU module?
A10: With proper installation and maintenance, it offers over 5 years of reliable operation.
Recommended Related Models (Same Series or Compatible)
| Model | Part Number | Description |
|---|---|---|
| PM891 | 3BSE037761R1 | Base CPU unit without accessories |
| PM861AK01 | 3BSE018157R1 | Mid-range CPU for AC 800M |
| PM864AK01 | 3BSE018161R1 | Enhanced CPU with higher memory |
| PM865K01 | 3BSE031151R1 | Dual CPU unit for redundancy |
| CI854AK01 | 3BSE030220R1 | Profibus DP interface module |
| TB840A | 3BSE037760R1 | Redundancy adapter for PM891 series |
Popular ABB Models (Same Brand Hot-Selling Units)
| Model | Part Number | Type | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|
| CI854AK01 | 3BSE030220R1 | Profibus Interface | 45 × 186 × 118 | 0.45 |
| PM861AK01 | 3BSE018157R1 | CPU Module | 96 × 186 × 110 | 0.60 |
| PM864AK01 | 3BSE018161R1 | High-End CPU | 96 × 186 × 110 | 0.62 |
| AI810 | 3BSE008516R1 | Analog Input Module | 45 × 186 × 118 | 0.25 |
| DO810 | 3BSE008510R1 | Digital Output Module | 45 × 186 × 118 | 0.28 |
| DI820 | 3BSE008512R1 | Digital Input Module | 45 × 186 × 118 | 0.28 |
