Description
Key Technical Specifications
- Model Number: SST-PFB3-VME-2-E (PB3-VME-2-E-V1.2)
- Manufacturer: SST (Woodhead)
- Series/System: SST PROFIBUS VMEbus Interface
- Bus Interface: VME64 (32-bit, 6U form factor)
- Fieldbus Protocol: PROFIBUS DP-V0, DP-V1, and FDL (Layer 2)
- Data Transfer Rates: 9.6 kbps to 12 Mbps (Auto-baud detection supported)
- Max PROFIBUS Nodes: Up to 126 slaves (Class 1 Master)
- Electrical Isolation: 500 VDC optical isolation on PROFIBUS port
- Connector Type: 9-pin D-sub (Female), IEC 61158 compliant
- Power Consumption: ~3.5 W to 5 W (from VME backplane: +5 V, ±12 V)
Functional Role & Application Analysis
The SST-PFB3-VME-2-E serves as a dedicated communication gateway bridging VME-based industrial computers and PROFIBUS DP field networks. Engineers deploy this module to solve integration challenges where legacy VME controllers must manage distributed I/O, variable frequency drives, or intelligent field devices without replacing the entire host architecture. It translates VME backplane data into deterministic PROFIBUS telegrams, allowing the host processor to maintain strict real-time control over field equipment while offloading protocol overhead to the card’s dedicated hardware.
Typical deployment scenarios include:
- Legacy System Upgrades: Integrating modern PROFIBUS field devices into aging VME-based control systems in power generation or rail signaling without migrating to a new PLC platform.
- Distributed I/O Control: Acting as a Class 1 Master to poll hundreds of remote I/O modules across a plant floor, leveraging the 12 Mbps baud rate for fast scan times.
- Aerospace & Defense Test Rigs: Providing reliable, deterministic data acquisition in VME-based test benches where electrical noise and harsh environmental conditions demand isolated, industrial-grade interfaces.
- OEM Machinery Integration: Serving as the standard communication interface for custom VME-based machinery that requires direct PROFIBUS connectivity for motor control and sensor feedback.
Our Quality Standard & Testing Process
We understand that a failed communication card in a legacy VME system can halt production for days. Sourcing obsolete hardware is risky; we mitigate that risk through a strict, multi-stage validation process. Every SST-PFB3-VME-2-E module we ship is verified functional, not just visually inspected. We do not sell untested pulls.
- Visual & Component Inspection: Technicians clean the board and inspect for physical damage, corrosion, or compromised solder joints, paying special attention to the VME edge connector and DB9 port.
- Live System Test: The module is installed in a live VME test rack and powered up to verify backplane communication, correct IRQ assignment, and stable power draw within the 3.5W–5W spec.
- Full-Function Diagnostics: We connect a PROFIBUS analyzer and slave simulator to verify DP-V0/V1 master functionality, confirm auto-baud detection from 9.6 kbps to 12 Mbps, and validate optical isolation integrity.
- Warranty Backing: Only modules passing all diagnostic tests are approved for shipment. Every unit is backed by our full 12-month warranty, giving you confidence in critical infrastructure.
SST-PFB3-VME-2-E-SST-PFB3-VME-PB3-VME-2-E-V1.2
Compatibility & Migration Paths
Do not assume all VME PROFIBUS cards are interchangeable. The SST-PFB3-VME-2-E has specific hardware and firmware requirements. Verifying these details before ordering prevents costly downtime and return logistics.
- Firmware/Hardware Revisions: Confirm your host CPU firmware supports the VME D16 data transfer mode and A24/A16 address spaces. Older VME CPUs may require specific driver versions or firmware patches to recognize the -E revision.
- Required Components: This module uses a standard 9-pin D-sub connector. Ensure your PROFIBUS cabling meets IEC 61158 specifications and that termination resistors are correctly set at both ends of the bus.
- Replacement & Alternatives: The SST-PFB3-VME-2-E (V1.2) is a direct drop-in replacement for earlier PB3-VME-2 revisions. If your application requires dual-channel redundancy, evaluate the SST-PFB3-VME-4-E as an alternative.
- Get Expert Help: Unsure about your VME backplane compatibility or driver requirements? Contact our technical team today for a free compatibility check. Provide your host CPU model and current firmware version for immediate validation.
