ABB HC800 Central Unit PLC for Industrial Automation

The ABB HC800 Central Unit PLC serves as the backbone for complex industrial control systems where precision and scalability matter most. Its ability to handle up to 30,000 function blocks makes it particularly suitable for applications requiring tight integration of process control, safety systems, and data exchange with SCADA platforms. Unlike entry-level PLCs, this unit shines in environments where deterministic response times and protocol flexibility are non-negotiable.

Specification	Details
Brand	ABB
Model	HC800
Dimensions	78.74 x 243.84 x 210.82 mm
Weight	0.88 kg
Power Supply	24/48V DC
Function Blocks	30,000
Communication	ModBus TCP

Real-World Applications

We’ve seen this unit deployed in continuous process plants where downtime costs exceed $50k/hour. For instance, a chemical processing facility in Rotterdam used HC800 modules to synchronize reactor temperature controls with safety shutdown systems while maintaining live data feeds to their historian. The compact design also makes it popular for retrofitting legacy systems – last quarter alone we supplied 12 units for a pharmaceutical plant upgrading their tablet-coating line.

Our inventory includes complementary ABB components like the PM866 CPU module and 3BHE040375R1023 communication adapter. Need to integrate with existing AC drives? The ACS800-ECO series works seamlessly through the ModBus TCP interface.

Our Commitment to Support

While ABB discontinued new production of this model in 2018, we maintain active stock with full functional testing. Every unit ships with a 12-month warranty covering both performance and compatibility. For time-sensitive projects, our regional warehouses in Houston, Singapore, and Dubai enable 48-hour delivery in most cases.

Curious about current pricing or need a cross-reference for obsolete parts? Drop us a line via email or connect directly through our WhatsApp channel. A plant engineer in Germany recently mentioned our support team resolved their firmware compatibility issue faster than ABB’s official channel – no small feat with legacy systems.