ABB TB806 3BSE008536R1 S800 I/O Modulebus Bus Inlet

The TB806 with part number 3BSE008536R1 is a specialized Modulebus bus inlet adapter designed to facilitate physical bus expansion within the S800 I/O hardware architecture. It features a male D-sub 25-pin connector housing that acts as the hardware bridge to interface standard internal bus signaling with extended field configurations. Exactly one adapter unit is required to properly terminate and connect each TK801 Modulebus extension cable assembly. This component guarantees the maintenance of continuous, low-impedance connection profiles for control bus lines bridging separate chassis segments across System 800xA, Advant OCS, or Compact Product Suite networks.

Ordering Information

• TB806
  • 3BSE008536R1: Modulebus Extension Cable Adaptor D-sub 25, Male

Hardware Specifications

Engineering Notes

• Modulebus Segments Integration: The bus inlet serves as a critical connection link for adding distance or shifting layouts via cables between distributed rail segments without causing protocol transmission timing issues.
• Matching Cable Requirements: System planning matrices must allocate precisely one inlet plug for every individual TK801 extension cable run deployed in the topology.
• Passive Electrical Interface: As a non-powered, mechanical-electrical adaptation interface, this module carries no active firmware or logic properties, minimizing component wear vectors.
• Compact Footprint Deployment: The minimal physical envelope allows clean, space-saving mounting paths inside restricted junction boxes or congested system panel rails.

Field Guidelines

• Connector Alignment: Align the D-sub 25-pin male connection pattern squarely over the receptacle port before applying force, avoiding skewed paths that bent or crushed pins.
• Cable Strain Relief: Anchor adjacent TK801 cables to a structural support rail or bracket to prevent localized terminal pull forces from causing intermittent bus open-faults.
• Static Charge Control: Ensure the field technician is thoroughly grounded using an standard industrial ESD wrist strap during handling and seating phases.
• Ambient Environment Sealing: Keep the connector free from dust, corrosive airborne chemical compounds, and localized moisture tracking to preserve stable contact interface resistances.