Description
Honeywell 51202330-200
Technical Specifications
- Bus type: TDC Data Hiway redundant communication bus
- Communication rate: 1 Mbps
- Interface ports: Dual coax BNC ports for A/B redundant bus
- Backplane interface: TDC3000 process manager VME bus
- Supply power: 5 V DC from backplane
- Operating temperature: 0 °C to +60 °C
- Maximum bus node count: 32 nodes per Data Hiway segment
Functional Features Dual redundant Data Hiway connection, automatic switchover to backup bus on failure. Peer-to-peer communication between process managers without central switch. On-board signal shaping compensates for cable signal attenuation. On-board LEDs indicate A/B bus link status and communication activity. Per-frame CRC verification, transmission error rate below 10^-9. Node address configurable via process manager software.
Application Scenarios Process manager to Data Hiway network connection for TDC3000 plants Spare part replacement for communication interface faults in legacy TDC3000 systems Plant-wide control network integration Historian data feed connection for TDC3000 systems
Performance Parameters
- Bus switchover time: ≤1 ms
- Communication latency: ≤2 ms
- Maximum bus transmission distance: 2 km per segment
- Fault detection response: ≤100 ms
- Mean time between failures: 600,000 hours
Material Composition FR4 high-speed PCB substrate Data Hiway bus controller chip High-speed differential transceiver Gold-plated BNC connectors Optocoupler isolation circuits Metal shielded front panel
Structural Features Standard Eurocard dimensions. Front panel dual BNC interfaces for A/B bus connection. LED array displays dual bus communication status. 75 Ω impedance-controlled trace layout matches coax cable. Metal shielded front panel.
Working Principle The board receives process data from the process manager over the VME backplane bus. Data is packaged into Data Hiway frames, transmitted over the dual redundant coax links to other nodes on the plant network. Inbound data from the network arrives over the links, unpacked and sent to the process manager. The link monitoring circuit continuously checks signal quality on both buses; active bus failure triggers automatic switchover to the backup bus. All transmitted frames pass CRC verification, corrupted data triggers automatic retransmission.
Installation Requirements Insert the board into the dedicated Data Hiway slot in the process manager. Connect A and B bus coax cables to corresponding BNC interfaces. Install 75 Ω termination resistors at bus segment endpoints. Set unique board node address in process manager configuration software. Verify both bus links show normal lock status after power-up.
Usage Notes Missing bus endpoint termination causes signal reflection and packet loss. Node address must not duplicate other Data Hiway devices; collision causes bus-wide communication failure. Loose BNC connectors cause bus dropout; tighten connectors during routine maintenance. Bus segment length must not exceed 2 km; longer runs require bus repeater units.
