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Phone：+86 17062388866Description
The ABB 0504994880 is a high-performance Central Processing Unit (CPU) module designed for the ABB AC 800M programmable logic controller (PLC) platform—a core component of ABB’s Industrial IT and System 800xA distributed control system (DCS). Engineered for demanding process automation applications, this controller delivers deterministic real-time performance, robust communication capabilities, and support for hardware redundancy, making it ideal for industries where reliability, safety, and uptime are critical.
Featuring an integrated Ethernet port (for Engineering Station, HMI, and IEC 61850 communication) and a Profibus DP/PA interface, the ABB 0504994880 seamlessly connects to I/O modules, drives, field instruments, and higher-level control systems. It supports hot-swap I/O, controller redundancy (with matching partner unit), and advanced programming in IEC 61131-3 languages (including Structured Text, Function Block Diagram, and SFC). With substantial program and data memory, it handles complex batch logic, interlocks, and regulatory control strategies common in power generation, water/wastewater, and heavy industry.
As part of ABB’s widely deployed AC 800M family, the 0504994880 remains a go-to solution for both new installations and lifecycle extensions of legacy automation systems—offering long-term availability and backward compatibility.
ABB 0504994880
Technical Specifications
| Parameter Name | Parameter Value |
| Product Model | 0504994880 |
| Manufacturer | ABB |
| Product Type | AC 800M CPU Module (Central Processing Unit) |
| Series | AC 800M (part of System 800xA architecture) |
| Processor | 32-bit RISC processor (ARM-based or equivalent) |
| Program Memory | ~4 MB (typical for mid-range AC 800M CPUs) |
| Data Memory | ~2 MB RAM |
| Execution Speed | <1> |
| Integrated Communication | – 1x Ethernet (10/100 Mbps) – for Engineering, OPC, Modbus TCP – 1x RS-232/RS-485 serial – for local diagnostics – 1x Profibus DP/PA master/slave – for field device integration |
| Redundancy Support | Yes – requires paired 0504994880 units and redundant backplane |
| Hot-Swap I/O Support | Yes – compatible with AC 800M I/O modules |
| Programming Software | ABB Control Builder M (part of System 800xA) |
| Operating Temperature | 0°C to +60°C (32°F to 140°F) |
| Mounting | DIN rail or rack-mounted in AC 800M chassis |
| Certifications | CE, UL, CSA, ATEX (depending on variant), IEC 61000-4 EMC compliant |
Main Features and Advantages
Integrated multi-protocol communication:
The ABB 0504994880 eliminates the need for separate communication modules by embedding Ethernet, serial, and Profibus interfaces directly into the CPU—reducing cost, panel space, and points of failure.
Controller redundancy for zero downtime:
When configured in a redundant pair, the 0504994880 provides seamless failover (<100>
Seamless System 800xA integration:
As a native component of ABB’s enterprise control platform, the 0504994880 enables unified engineering, alarm management, and historical data access across the entire plant—bridging IT and OT domains.
Robust real-time performance:
Optimized for cyclic execution, the CPU maintains consistent scan times even under heavy I/O load, ensuring precise control of fast processes like combustion or chemical dosing.
Application Field
The ABB 0504994880 is widely used across industries requiring reliable, scalable automation:
Power Generation: Controls boiler sequences, generator synchronization, and auxiliary systems in coal, gas, and hydro plants—often in redundant configurations.
Water & Wastewater: Manages pump station logic, chemical feed control, and SCADA communication across municipal networks.
Oil, Gas & Petrochemicals: Automates compressor skids, flare systems, and tank farm operations with SIL-rated safety integration.
Mining & Metals: Handles conveyor sequencing, crusher control, and dust suppression systems in harsh environments.
Pulp & Paper: Coordinates drive speeds, steam pressure loops, and grade change logic on paper machines.
Its flexibility makes it equally suited for standalone PLC applications and as a subsystem within a larger System 800xA DCS.
ABB 0504994880
Related Products
ABB 0504994890: Higher-end AC 800M CPU with more memory or faster processing
ABB CI854 / CI853: Communication modules (if additional fieldbus needed)
ABB AI810 / AO810 / DI810 / DO810: Standard I/O modules for AC 800M
ABB TK801 / TK802: Optical fiber link modules for redundant CPU synchronization
ABB PM864 / PM865: Alternate CPU models in the AC 800M family (verify cross-compatibility)
ABB System 800xA Engineering Station: Required for configuration via Control Builder M
