ABB HC800 Control Processor Module

ABB HC800 (Symphony Plus HPC800 Main Controller Module)
HC800 is the core main control processor (CPU) of ABB Symphony Plus (HPC800) DCS, responsible for logical operations, closed-loop control, I/O processing, and system scheduling. It is the core module of HPC800 controller and will be mainly sold in 2026.

1、 Basic Information
Model: HC800 (complete material number: HC800)
Brand: ABB (Switzerland)
System: Symphony Plus (HPC800) DCS (formerly Bailey system upgrade)
Positioning: Main controller (CPU), system “brain”
Status: On sale (2026-05-22), new system standard, preferred for expansion/replacement of old system
Installation: DIN rail installation, combined with CP800 (communication processor) in the same slot for use
Certification: CE, UL, RoHS
Series affiliation: Symphony Plus SD series
2、 Hardware specifications (official)
Processor: 32-bit Freescale ColdFire, 256 MHz
memory
RAM: 64 MB (running memory)
Flash: 4 MB (firmware)
NVRAM: Scalable User Configuration Storage
Supporting Function Blocks: 30000 pieces
I/O processing capability: Execute 5000+I/O closed-loop control within 250 ms
Task scheduling: Up to 8 segment tasks, with a minimum cycle of 1 ms per segment
Power supply: 24 VDC ± 10% (system bus power supply)
Power consumption: approximately 12 W (typical)
Dimensions (width x height x depth): 210.82 x 243.84 x 78.74 mm
Weight: 0.88 kg
Working temperature: 0 ° C~+70 ° C; Storage: -20 ° C~+70 ° C
Protection: IP30 (inside control cabinet)
3、 Interface and I/O compatibility
1) System bus
PN800: Communicate with CP800 (system intranet)
Redundant bus: dedicated peer-to-peer communication bus,<100 ms redundant switching
2) Support I/O subsystem (critical)
✅ SD series I/O (native I/O)
✅ Harmony Rack I/O (compatible with the old Bailey system)
✅ S800 I/O (ABB Universal I/O)
3) Communication (dependent on CP800)
Ethernet: Modbus TCP, PROFINET, EtherNet/IP, OPC UA
Fieldbus: Profibus DP, FF HART, Modbus RTU
4、 Core functions
Main control operation: execute control logic, PID regulation, sequence control, interlocking, data operation
Multi I/O compatibility: seamless integration of SD/Harmony/S800 three types of I/O, friendly for upgrading old systems
High real-time performance: minimum 1 ms task cycle, suitable for high-speed closed-loop control
Redundant hot standby: Dual HC800 redundant configuration, interference free switching, improves system availability
Online maintenance: firmware downloadable, online parameter modification, and diagnostic during operation
System scheduling: Manage CP800 communication, I/O scanning, alarm/event handling
5、 HC800 vs CP800 (core difference)
table
Module HC800 CP800
Character main controller (CPU) communication coprocessor
Core work logic/operation/control/I/O protocol conversion/external communication/data forwarding
Processor 256 MHz ColdFire 2 x 256 MHz ColdFire
Key Capability: 30000 Function Blocks, 5000+I/O Control Multi Protocol Gateway, PN800 Bus
Combination relationship must be equipped with CP800 and HC800
In one sentence: The HC800 tube “calculates” and the CP800 tube “communicates”, forming a complete HPC800 controller node.
6、 Typical applications
Industry: Electric Power (Thermal Power/Hydroelectric/Nuclear Power), Oil and Gas, Chemical Industry, Water Treatment, Metallurgy
Scenario: Symphony Plus DCS main control unit, replacing the old Bailey INFI-90 controller
Value: Smooth upgrade of old systems, multi I/O compatibility, high reliability redundancy, strong real-time control