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The SST SST-PFB3-VME is a ruggedized PROFIBUS DP-V1 Master Interface Card designed by Schweitzer Engineering Laboratories (SEL) for mission-critical automation in power substations and industrial control systems. Engineered for VMEbus-based platforms, this module enables real-time communication between legacy control systems and PROFIBUS DP devices (drives, I/O, sensors) with deterministic performance. The SST-PFB3-VME supports full DP-V1 functionality—including acyclic data exchange, alarm handling, and diagnostics—while its hardened design (-40°C to +85°C operating range, 50g shock resistance) withstands harsh electrical environments like switchgear rooms or mining operations. Dual isolated RS-485 ports with ±15 kV ESD protection ensure signal integrity amidst EMI, while integrated configuration tools simplify integration with SEL relays and RTUs.
SST SST-PFB3-VME
Technical Specifications
| Parameter Name | Parameter Value |
| Product Model | SST-PFB3-VME |
| Manufacturer | SST (Schweitzer Engineering Laboratories) |
| Product Type | PROFIBUS DP Master Interface Card |
| Host Bus | VME64 (VMEbus Rev C.1) |
| Protocol Support | PROFIBUS DP-V1 (EN 50170) |
| Data Transfer Rate | 9.6 kbps – 12 Mbps (auto-negotiating) |
| Ports | 2x Isolated RS-485 (9-pin D-Sub) |
| Isolation Voltage | 2,500 VAC (Port-to-Backplane) |
| Max Slave Devices | 124 |
| Diagnostics | LED Status, Buffer Logging, Telegram Error Counts |
| Operating Temperature | -40°C to +85°C |
| Shock/Vibration | 50g @ 11ms (IEC 60068-2-27), 5g @ 5–150 Hz |
| Certifications | IEEE 1613, UL 508, CE, DNV GL |
| Power Consumption | 5V @ 1.5A (VMEbus) |
| Dimensions | 233 x 160 mm (6U VME) |
Main Features and Advantages
Deterministic control: Hardware-based PROFIBUS ASIC achieves ≤1 ms cycle times for time-critical applications like breaker synchronization. Dual-port architecture enables redundant ring topologies or segmented networks.
Substation resilience: Conformal coating (IPC-CC-830B) protects against humidity and corrosive gases. Surge immunity meets ANSI/IEEE C37.90.1 (±4 kV), essential in high-voltage environments.
Engineering efficiency: Preloaded GSD database supports 500+ device profiles. SEL’s AcSELerator Architect software enables drag-and-drop configuration with automatic I/O mapping to VME hosts.
Application Field
The SST SST-PFB3-VME integrates critical infrastructure:
Power Transmission: Controls capacitor bank switches and transformer tap changers via PROFIBUS.
Industrial SCADA: Interfaces mining conveyor drives (e.g., Siemens SIMOCODE) with legacy VME systems.
Water Management: Synchronizes pump VFDs in flood control stations.
Oil & Gas: Monitors compressor vibration sensors in SIL 2 safety loops.
SST SST-PFB3-VME
Related Products
SST-PFB3-PCI: PCI-bus version for industrial PCs.
SST-PN3-VME: PROFINET Controller for VME platforms.
SEL-2032: Communications processor with DNP3/Ethernet.
SEL-2411: Programmable automation controller.
SST-5136-DNP-PCI: DNP3 interface card for SCADA integration.
