Description
Product Name ：VMIVME 4905 GE Power module
Product details:
The GE VMIVME-4905 is a high-performance VMEbus Synchro/Resolver-to-Digital (S/D or R/D) conversion board originally developed by VMIC (later acquired by GE Intelligent Platforms / Abaco Systems). It is engineered for industrial, military, and aerospace applications requiring precise angle and position sensing.
1. Detailed Description
The VMIVME-4905 is a single-slot, VMEbus-compatible module designed to interface synchro and resolver transducers with host computing systems. It converts multi-channel analog synchro or resolver signals into high-resolution digital angle data. Featuring tracking converters, the board provides high accuracy and continuous digital outputs without data latency, making it ideal for real-time motion tracking and control systems.
2. Technical Specifications
| Parameter | Specification |
| Form Factor | Standard 6U Single-Slot VMEbus Module |
| Bus Interface | VMEbus (A24/A16 addressing, D16/D08 data transfers) |
| Channels | Typically up to 4 or 8 independent input channels (depending on configuration) |
| Resolution | 10, 12, 14, or 16-bit configurable resolution |
| Accuracy | Up to \pm 1 to \pm 4 arc-minutes (depending on model variant and resolution) |
| Input Signal Types | Synchro or Resolver inputs |
| Signal Input Voltage | Standard 11.8 V_{rms}, 90 V_{rms}, or custom option |
| Reference Voltage | 26 V_{rms} or 115 V_{rms} (400 Hz or 60 Hz option) |
| Frequency Range | 50 Hz to 400 Hz (variant dependent) |
| Tracking Rate | High-speed tracking (varies with resolution, up to hundreds of RPS) |
| Power Requirements | +5V, +12V, and -12V from the VME backplane |
| Operating Temperature | 0^\circC to +70^\circC (Standard) / -40^\circC to +85^\circC (Industrial/Rugged) |
3. Product Advantages
- High Precision & Speed: Offers high-resolution conversion up to 16 bits with minimal angular error, suitable for critical positioning tasks.
- Continuous Tracking: Built-in tracking-type converters provide real-time, jitter-free angular position updates without delay.
- Multi-Channel Density: Integrates multiple conversion channels on a single 6U board, saving valuable backplane slots.
- Robust VME System Compatibility: Seamlessly integrates into existing VMEbus architectures and legacy control systems.
- High Isolation: Offers transformer isolation on signal and reference inputs to prevent ground loops and eliminate system noise.
4. Key Applications
- Aerospace & Defense: Flight control surfaces, radar antenna positioning, guidance systems, and simulator motion platforms.
- Naval Systems: Shipboard gun turret control, gyrocompass interfaces, and navigation equipment.
- Industrial Automation: Precision robotics, heavy industrial machinery, and rotary table positioning.
- Power & Energy: Valve positioning, turbine blade pitch control, and encoder replacing mechanisms.
5. Important Usage Considerations & Cautions
Safety & Installation Guidelines
- Power Disconnection: Always power down the VME chassis before inserting or removing the VMIVME-4905 board to avoid damaging sensitive onboard tracking converters.
- ESD Protection: Use proper Electrostatic Discharge (ESD) grounding (e.g., wrist straps) when handling the module.
- Reference & Signal Matching: Verify that input signal voltages and reference frequencies match the specific model variant (e.g., 11.8 V vs. 90 V signal; 400 Hz vs. 60 Hz reference) to prevent hardware damage or inaccurate conversion.
- Thermal Management: Ensure adequate forced-air cooling within the VME enclosure to keep operational temperatures within specified bounds.
- Grounding: Maintain correct grounding across the synchro/resolver wiring to preserve transformer isolation benefits and avoid signal distortion.
How to Verify Step Success
- Address Verification: After mounting the module into the VME backplane and setting the jumper/DIP switches for base addressing, verify communication by executing a VMEbus read command to the board’s status/ID register. A correct return value confirms active bus communication.
- Channel Reading Test: Apply a known reference voltage and synchro/resolver signal to Channel 1, then read the digital output register; the output hex/binary value should precisely correspond to the mechanical angle of the shaft.
Advantages: Foxboro, OVATION, TRICONEX, Allen-Bradley, ABB, Motorola, Siemens Moore, Ge Fanuc, Woodward, Bently Nevada and other major import brands!
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Colour：new Warranty: 12 months
Lead Time：3-day working day Country of origin: United States
Price: Please contact us Product weight：0.515kg
Shipping Port: Xiamen, China
Payment: Bank of Chicago, Bank of Singapore
Express cooperation: fedex, DHL, UPS and your express account
Service: Professional Sales provides 24 hours /7 days online service
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