CONCURRENT SSI232.1 029.365.083 VME Bus Synchronous Serial Communication Board Card

CONCURRENT SSI232.1 029.365.083 VME Bus Synchronous Serial Communication Board Card

I. Model Code Interpretation
Brand: CONCURRENT (Concurrent Real-Time, an American high-end real-time embedded VME computer manufacturer, mainly used in aviation, heavy-duty gas turbines, and industrial high-power drive real-time control systems)
SSI232.1: Board card hardware model
SSI = Synchronous Serial Interface
232 = Compatible with RS232 physical layer, also supports RS422/485 synchronous/asynchronous communication
.1 = Hardware version 1 generation
029.365.083: Original factory unique part number, must be fully filled in for procurement and spare parts replacement
Bus architecture: Standard 6U single-wide VMEbus industrial card, compatible with Concurrent VME real-time computer rack

Core Hardware Specifications
1. Communication Channels and Protocols
Channel quantity: 8 independent isolated serial channels, each channel software switching mode
Physical interface: RS-232 / RS-422 / RS-485 three-mode compatibility
Communication mode: Synchronous (SDLC/HDLC) + Asynchronous UART dual mode, compatible with old industrial control peripherals, gas turbine excitation, vibration monitoring equipment serial port interaction
Maximum baud rate: Asynchronous 115.2 kbps; Synchronous 2 Mbps
Built-in hardware FIFO: Each channel has independent receiving and transmitting cache, reducing VME main CPU interrupt occupation, ensuring real-time performance
Electrical isolation: Optical isolation between channels and VME backplane bus, resistant to large-power drive system electromagnetic interference
2. VME Bus Electrical Parameters
Power supply: Backplane + 5V / +12V, typical overall power consumption 1.1A@5V
Bus standard: VMEbus IEEE1014, master-slave dual-mode DMA data transmission
Size: Standard 6U VME single-height card 135 (W)×186 (H)×19 (D) mm
Weight: Approximately 1.2kg
3. Environmental Reliability
Operating temperature: -20℃ ~ +70℃, suitable for power plants, metallurgy, ship control cabinets
Protection: IP20 cabinet installation, industrial wide-temperature components, resistant to vibration and shock
Certification: CE EMC, UL industrial safety, compatible with gas turbine, steam turbine control system’s strict electromagnetic environment

Core Functional Features
Real-time synchronous serial port expansion
Designed specifically for VME real-time main control to expand multiple old-style serial ports, connecting traditional industrial control units without Ethernet: ABB AC800PEC excitation, VM600 vibration monitoring, EG1033 flame amplifier, 7SJ8 relay protection, etc. serial port devices.
Multi-protocol compatibility
Support Modbus RTU, custom synchronous frame, HDLC link protocol, compatible with imported equipment from the 1990s dedicated serial port communication protocols.
Hardware fault self-diagnosis
The board card has its own status indicator lights, real-time reporting of channel disconnection, short circuit, and bus communication abnormalities; the VME main control can read each channel fault code.
Multi-card parallel expansion
The same VME backplane can insert multiple SSI232.1 cards, expanding to dozens of serial port points, meeting the centralized serial port collection of multiple equipment in the entire plant.

Typical Application Scenarios
Real-time control system for gas/steam turbine units Concurrent VME real-time host supporting board cards, compatible with ABB excitation GFD563A102, VM600 vibration MPC4 card, Honeywell flame amplifier EG1033AA01, Siemens relay protection 7SJ8 series, completing the serial data acquisition and interlock interaction of all equipment for the unit.
Metallurgical high-power rolling mill, mine hoist LCI variable frequency drive control system
Aerospace and ship power embedded real-time measurement and control system