Description
The
AC800M 3BSE053240R1 PM891 is a
high-integrity controller designed by
ABB for distributed control systems (DCS), optimized for mission-critical applications in industries such as energy, manufacturing, and chemical processing. As part of ABB’s
AC800M platform, this module combines advanced processing capabilities, redundant architecture, and multi-protocol support to ensure reliable operation in harsh environments.
The PM891 serves as the core processing unit for ABB’s AC800M DCS, supporting up to 128 independent control loops with 1 ms cycle times for real-time responsiveness. Its dual redundant CPUs and hot-swappable design ensure 99.999% availability, making it suitable for systems where downtime could lead to significant financial losses. The module integrates seamlessly with ABB’s S800 I/O modules and 800xA Control Builder software, enabling scalable solutions for both small and large-scale industrial operations.
| Parameter |
Specification |
| Processor |
32-bit ARM Cortex-A9 (533 MHz) |
| Memory |
1 GB RAM, 4 GB flash storage |
| Redundancy |
Dual CPU, redundant Ethernet/IP |
| Communication Protocols |
Modbus RTU, Profibus DP, Ethernet/IP, OPC UA |
| Power Supply |
24 V DC (19.2–30 V DC) |
| I/O Compatibility |
ABB S800 I/O modules (up to 1,000+ points) |
| Operating Temperature |
-40°C to +70°C |
| Dimensions |
119 mm × 186 mm × 135 mm |
| Weight |
1.5 kg |
AC800M 3BSE053240R1 PM891
- High-Speed Processing: Executes 1,000 PID loops in 0.8 ms, critical for complex process control.
- Redundant Architecture: Dual CPUs and communication channels eliminate single points of failure.
- Energy Efficiency: Low-power design reduces energy consumption by 20% compared to legacy controllers.
- Flexible Configuration: Supports IEC 61131-3 programming languages (FBD, ST, SFC) via ABB’s 800xA software.
- Energy: Manages turbine control and grid synchronization in power plants.
- Chemical Processing: Optimizes reactor safety protocols and material handling.
- Water Treatment: Controls pump operations and chemical dosing in wastewater systems.
Case Study: A Middle Eastern oil refinery deployed PM891 to manage 500+ control loops, reducing unplanned downtime by 45% and saving $3 million annually in operational costs.
- Processing Speed: 533 MHz CPU vs. 400–450 MHz in comparable controllers.
- Redundancy: Full CPU/communication redundancy vs. partial redundancy in 竞品.
- I/O Capacity: Supports 1,000+ I/O points vs. 600–800 points in alternative solutions.
AC800M 3BSE053240R1 PM891
- System Scale: Choose PM891 for large-scale systems requiring 500+ I/O points.
- Compatibility: Ensure integration with ABB’s S800 I/O modules for optimal performance.
- Budget: Offers a 15% lower total cost of ownership than premium competitors.
- Wiring: Use shielded cables for Ethernet and Profibus connections to prevent EMI.
- Battery Replacement: Replace the backup battery every 5 years to preserve real-time clock accuracy.
- Firmware Updates: Apply ABB-released updates via 800xA Control Builder to enhance security and functionality.
Shanxi Xinyeda International Trading Co., Ltd. supplies
new and refurbished AC800M 3BSE053240R1 PM891 controllers, fully tested for ABB system compatibility. Our
3-year warranty and
24/7 technical support ensure seamless integration. Visit
www.xydcontrol.com or contact us for pricing and retrofitting guidance.
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Full 12-month warranty on all components
