The ABB Advant Controller 250 (AC250) is currently in the "Limited" lifecycle phase, meaning original manufacturer support and new parts are increasingly difficult to source. At Moore Automation, we serve as the "special-grade emergency warehouse" for industrial giants. We maintain a massive inventory of PM253, PM254, and PM255 processor modules and communication interfaces to ensure your legacy systems—some running for over 20 years—remain operational.
The AC250 is a comprehensive process controller designed for medium to large-scale industrial applications. It is particularly effective in environments requiring high modularity and diverse communication protocols.
When replacing or expanding your AC250 system, the choice of Processor Module (PM) depends on your I/O count and required execution speed. Moore Automation stocks all three core variants:
| Model | Clock Speed | RAM Memory | Max I/O Units Supported | Built-in Interface |
| PM253 | 16.7 MHz | 1–2 MB | 32 to 64 units | SattBus |
| PM254 | 28.8 MHz | 4–8 MB | 128 to 256 units | SattBus |
| PM255 | 50 MHz | 4–8 MB | 256 to 512 units | RS232 Only |
Selection Pro-Tip: If your system relies on SattBus supervision, stick with the PM253 or PM254. For high-speed data processing and the largest I/O capacity, the PM255 is the superior choice, though it requires an external interface for SattBus connectivity.
Continuous manufacturing requires proactive inventory management, especially for systems like the ABB Advant Controller 250 currently in the "Limited" lifecycle phase. Rather than facing the volatility of the secondary market during a breakdown, secure essential components like the PM255 Processor and SattBus interfaces directly from available stock. Moore Automation provides the immediate hardware solutions needed to extend system life and uphold production commitments without compromise. Relying on in-stock, original modules ensures that aging DCS infrastructure remains operational even as manufacturer support diminishes.
A: Yes. The AC250 allows S200 and S200L I/O units to be used both centrally via the serial I/O bus and remotely via PROFIBUS-DP or ControlNet.
A: While ABB encourages evolution to the AC 800M, a full system migration is costly and time-consuming. Moore Automation allows you to extend the life of your current system for years by providing guaranteed, warrantied spare parts that the OEM may no longer stock.
A: The system is configured using Advant Control Builder (Windows-based). We recommend maintaining backups of your .AAX and .BAX source files, as they are essential for rebuilding a controller if code is lost.
A: The AC250 is a comprehensive process controller capable of handling up to 8,192 I/O points. The total number of supported I/O units depends on the specific Processor Module (PM) installed: PM253 supports 32 to 64 units, PM254 supports 128 to 256 units, and PM255 can manage up to 512 units.
A: Unlike the PM255, which uses a rechargeable NiMH battery, the PM254 utilizes a lithium battery for RAM and real-time clock backup. Crucially, the PM254 battery lifetime is limited to a maximum of 3,000 hours when the system is unpowered, making regular inspections vital to prevent logic loss during facility shutdowns.
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