SST-PFB3-VME-2 Dual Channel PROFIBUS DP VME Communication Card

SST-PFB3-VME-2 developed by Molex Woodhead (SST) is a dual-channel PROFIBUS DP VME bus communication card. It is designed for VME rack systems, widely used on GE Speedtronic Mark VI turbine control systems, serving as the bridge between VME controller and PROFIBUS DP field devices.

This board comes with two fully independent PROFIBUS DP channels, each can be configured as master or slave. It adopts electrical isolation protection and built-in flash memory to save network configuration, equipped with RS232 debug port and channel status LEDs. It is a popular spare part for gas and steam turbine control cabinet maintenance and upgrade.

Main Specifications

1. Brand: Molex Woodhead SST; Model: SST-PFB3-VME-2; Type: Dual Channel PROFIBUS DP VME Communication Card
2. Compatible System: VME64 chassis, GE Speedtronic Mark VI gas/steam turbine control system
3. Core Functions: PROFIBUS DP master/slave communication, dual-channel independent operation, VME bus data exchange, network diagnosis
4. PROFIBUS Baud Rate: 9.6kbps ~ 12Mbps; Interface: 2 × DB9 PROFIBUS ports, 1 × RS232 debug port
5. VME Bus: VME D16, A24 / A16 addressing; Power: +5V via VME backplane, 180mA typical
6. Isolation: 4000V electrical isolation between two channels; Onboard flash for configuration storage
7. Operating Temperature: 0℃ ~ +60℃; 6U VME card, LED indicators for channel fault & running status

Core Functions

1. Two fully independent PROFIBUS DP channels, each channel can run as DP master or DP slave separately.
2. Realize bidirectional data exchange between VME host controller and PROFIBUS DP field instruments and drives.
3. Support DP-V1 acyclic communication, FDL message transmission and OPC DA V3.0 data access service.
4. 4000V isolation design between channels, suppress surge interference and improve stability in industrial power plant environment.
5. Onboard flash memory stores network configuration, no repeated setup after power cycle; RS232 port for firmware download and diagnosis.
6. Standard 6U VME plug-in structure, easy disassembly and replacement during turbine control cabinet maintenance.

Application Scenarios

1. PROFIBUS communication interface for GE Mark VI turbine control systems in power plants and energy stations.
2. Fault communication card replacement and routine maintenance of existing VME bus turbine control cabinets.
3. Industrial automation renovation for gas turbine, steam turbine and large rotating machinery control systems.
4. Emergency replacement for board failure to restore PROFIBUS DP fieldbus communication and control data exchange.
5. Spare parts stocking for maintenance teams operating GE Speedtronic Mark VI VME control platforms.
6. Aftermarket spare supply for turbine control cabinet overhaul and power plant automation upgrade projects.

FAQ

1. Q: Can SST-PFB3-VME-2 run two channels as DP master at the same time?
   A: Yes, each channel is independent and can be set to master or slave mode separately.
2. Q: What are typical card failure symptoms?
   A: PROFIBUS channel offline, slave device dropout, VME backplane communication timeout, channel fault LED lit.
3. Q: How to complete commissioning and diagnosis?
   A: Insert into VME rack, connect DB9 bus cable, configure master/slave mode, download network parameters and test data communication.