Description
Honeywell TK-PPD011
Technical Specifications
- Connected devices: TPS series operator keyboard, display terminal
- Bus interface: TPS LCN high-speed communication bus
- Communication rate: 10 Mbps
- Isolation withstand voltage: 1500 VAC
- Supply power: 5 V DC from operator station backplane
- Operating temperature: 0 °C to +60 °C
- Supported ports: 2 operator keyboard interfaces, 1 display terminal interface
Functional Features Transmits operator key commands to the main control system, response latency ≤10 ms. High-speed return of screen display data to the terminal, smooth screen refresh without lag. On-board optocoupler isolation, blocks ground loop interference between operator station peripherals and the main control bus. Real-time communication fault diagnosis, triggers operator station communication alarm. On-board LEDs indicate keyboard connection, display connection and bus communication status. Hot swap support, faulty board replaced online without system interruption.
Application Scenarios Human-machine interaction connection for TPS operator stations Spare part replacement for no keyboard response and screen freezing faults in legacy stations Operator station assembly for new TPS control rooms Communication stability upgrade for aging operator stations
Performance Parameters
- Key press response latency: ≤10 ms
- Screen data refresh rate: 30 frames per second
- Communication bit error rate: ≤10^-12
- Fault detection response: ≤200 ms
- Isolation withstand voltage: 1500 VAC for 1 minute
Material Composition FR4 PCB substrate Bus transceiver chip Optocoupler isolation array Gold-plated peripheral connectors Gold-plated backplane edge fingers ABS flame retardant front panel
Structural Features Standard Eurocard dimensions, inserts into the operator station dedicated expansion slot. Front panel houses two keyboard interfaces and one display terminal interface. LED array shows status of three peripheral connections. Isolation barrier separates peripheral side and main control bus side. Equal-length differential traces match LCN bus high-speed signal requirements.
Working Principle Operator keypress commands enter the board, pass through level conversion and optocoupler isolation, then packaged into LCN bus frames for transmission to the main control unit. Screen data returned by the controller passes through the board, converted to display terminal compatible signals for output to the screen. On-board diagnosis circuit continuously monitors connection status of all three peripherals; cable disconnection or communication abnormality generates a fault flag, triggering operator station alarm.
Installation Requirements Insert the board into the expansion slot only when power is off, press evenly. Plug operator keyboard and display terminal connectors to corresponding interfaces, tighten fixing screws. Shielded communication cable shields are single-point grounded. After power-up, test key press response and screen refresh normalcy.
Usage Notes Hot-swapping the board causes instantaneous operator station black screen restart, disrupting normal operation. Loose peripheral connectors cause unresponsive keyboards; tighten connector fixing screws during routine maintenance. Maintain equal potential between board and main control bus ground; ground loops cause screen display noise.
