BC810 Interconnection Units ABB AC 800M

The ABB BC810, also cataloged as the BC810 CEX-Bus Interconnection Unit, operates as a dedicated hardware component for localized communication bus section linking and electrical isolation within AC 800M controller networks.

Hardware Specifications

Backplane Bus Communication Velocity and Deterministic Networks

The hardware subsystem acts as a physical layer repeating transceiver that maintains synchronous backplane bus communication velocity across distinct processor sections. By linking subdivided extension rails, it preserves total frame timing intervals needed by Profinet / EtherNet/IP deterministic networks during high-density cyclic processing. The solid-state design handles continuous logic arbitration profiles across the interface backplane while sustaining absolute firmware flash compatibility with base PM8xx processor models.

Frequently Asked Questions

Q: Is hot-swap replacement permitted on the CEX-Bus during active processor scanning?

A: No. Removing or inserting the module while the sub-rack is energized can introduce voltage transients on the data lines, causing data corruption or fatal bus halts on the host controller.

Q: How is backplane bus current load limitations balanced when the unit is inserted?

A: The device draws power directly from the 24 VDC master supply line through the baseline connector matrix, matching S800 system current limits without overriding upstream internal regulators.

Field Installation Guidelines

• Mount the unit vertically onto a grounded DIN-rail segment adjacent to the primary controller unit to avoid data line length mismatches.
• Engage the rear slide locks completely into the corresponding backplane terminal matrix before securing the module retaining screws.
• Ensure all interconnected shielding braids trace back directly to the primary chassis earth rail via low-impedance termination clamps.
• Maintain a clearance margin of 50 mm above and below the housing ventilation ports to ensure adequate passive convective cooling profiles.