
ABB HC800Key features
Multi-core processing architecture: Dual-core/quad-core processors are used to support millisecond cycle cycles.Capable of processing over 5,000 I/O points in less than 250 milliseconds for fast, accurate process control.
Safety compliance: SIL2/3 certified, suitable for safety-critical systems.
Redundancy and fault tolerance: Support controller hot standby redundancy and I/O module redundancy.
Multi-protocol communication: Integrates PROFIBUS DP, Modbus TCP, OPC UA and other protocols, compatible with third-party devices.
Flexible scalability: Supports up to 256 local/remote I/O modules.
Harsh environment adaptability: Wide operating temperature range, anti-vibration, and electromagnetic interference.
Performance comparison
Parameter | ABB HC800 | ABB AC 800M PM803F | Siemens S7-1500 | Substitution Analysis |
Processor Performance | Multi-core 1.2 GHz | Single-core 800 MHz | Multi-core 1.5 GHz | HC800 has better performance than PM803F and is comparable to S7-1500. |
Safety Level | SIL3 | SIL2 | SIL2 | HC800 offers the highest safety rating, ideal for high-risk environments like nuclear. |
Redundancy Support | Controller hot-standby + I/O redundancy | Controller redundancy only | Requires additional redundancy kits | HC800 provides higher integration and shorter switchover times. |
Communication Protocols | PROFIBUS DP, OPC UA, Modbus | PROFIBUS, Ethernet/IP | PROFINET, OPC UA | HC800 supports a wider range of protocols; S7-1500 is reliant on the PROFINET ecosystem. |
Cost | High | Medium-High | High | HC800 offers better value in safety-critical systems, while S7-1500 suits general automation. |


Typical cooperation cases
A refinery of Saudi Aramco uses ABB HC800 to build a SIL3 emergency shutdown system (ESD), with redundant configuration to manage 2000+ I/O points.
A Norwegian North Sea platform uses ABB HC800 to control equipment in explosion-proof areas, and uses ATEX-certified modules to withstand harsh environments.
Roche Pharmaceuticals in Switzerland deploys ABB HC800 to manage HVAC and aseptic filling lines, meeting GMP real-time data tracking requirements.
Japan's Nippon Steel uses ABB HC800's millisecond response to control the cooling water flow of continuous casting machines to improve the consistency of steel quality.