GE VMIVME-7658

Description

Product Overview: GE VMIVME-7658

Technical Parameters: GE VMIVME-7658

1. Analog Input (AI) Specifications

• Number of channels: 8 independent differential channels (each channel is isolated from other channels and the enclosure);
• Supported signal types: 4–20 mA DC (current), 0–5 V DC/1–5 V DC/0–10 V DC (voltage), Pt100/Pt1000 (RTD temperature sensors);
• Measurement accuracy: 16-bit resolution, error ≤ ±0.02% FS (full scale) at 25°C;
• Response time: ≤ 100 ms (delay from signal acquisition to transmission to the controller).

2. Analog Output (AO) Specifications

• Number of channels: 4 independent channels (each channel is isolated from others);
• Supported signal types: 4–20 mA DC (max current per channel: 0.5 A), 0–5 V DC/1–5 V DC (voltage);
• Output accuracy: 16-bit resolution, error ≤ ±0.05% FS at 25°C;
• Response time: ≤ 150 ms (delay from controller command to output terminal).

3. Reliability & Protection

• Electrical isolation: Isolation voltage between channels ≥ 2 kV AC (1 minute), isolation between channels and enclosure ≥ 3 kV AC (1 minute);
• EMC compliance: Meets EN 61000-6-4 (immunity) and EN 61000-6-2 (emission) standards;
• Protection features: Channel fault detection (open circuit, short circuit, overload), adjustable low-pass filter (0.1–50 Hz for high-frequency interference suppression);
• Mean Time Between Failures (MTBF): ≥ 7.5 million hours (per GE official data);
• Protection class: IP20 (protection against finger contact and large dust particles).

4. Installation & Environmental Adaptability

• Dimensions: 160 × 233 × 32 mm (width × depth × height), standard VME 6U form factor;
• Mounting method: Embedded slot installation in VME enclosures;
• Operating temperature: 0°C to +60°C (operation), -40°C to +85°C (storage);
• Power requirements: +5 V DC, ±12 V DC, maximum current consumption ≤ 2.5 A.

Core Advantages & Features: GE VMIVME-7658

1. Integrated Design Saves Space: By combining 8 AI and 4 AO channels into one module, GE VMIVME-7658 reduces VME enclosure slot usage by 50% compared to separate AI/AO modules. For example, in retrofitting legacy thermal power plants with limited remaining slots, this module directly replaces dual-module setups without requiring additional enclosure expansion.
2. High Precision & Anti-Interference: With 16-bit resolution and ≤ ±0.02% AI measurement error, GE VMIVME-7658 accurately captures weak signals from RTD temperature sensors and pressure transducers. Its adjustable low-pass filter suppresses high-frequency interference from motors and inverters—critical in steel mill rolling mill control, where stable AO commands from GE VMIVME-7658 prevent thickness deviations in rolled products.
3. Full VME Ecosystem Compatibility: GE VMIVME-7658 strictly adheres to the VMEbus Rev.C.1 standard (32/64-bit bus, maximum transfer rate 80 MB/s), enabling direct compatibility with GE controllers like the GE VMIVME-7486 without additional adapters. In aerospace test platforms, it seamlessly integrates into existing VME systems for fast test data acquisition and actuator control.
4. Low Maintenance & Easy Debugging: Supported by the GE VMIC Configuration Tool, GE VMIVME-7658 enables automatic calibration and online fault diagnosis. Engineers can remotely monitor channel status (e.g., open circuits, overloads) without shutting down the system or disassembling the module—cutting maintenance time from 2 hours (for traditional modules) to 15 minutes in heavy machinery plants.

Application Cases: GE VMIVME-7658

1. Thermal Power Plant Turbine Control: In a 300 MW thermal power plant, GE VMIVME-7658 uses AI channels to collect turbine bearing temperatures (Pt100 signals) and steam pressure (4–20 mA signals), while AO channels output valve opening commands (4–20 mA). Paired with the GE VMIVME-7486 controller, it enables precise steam flow regulation to ensure stable unit operation.
2. Aerospace Engine Test Bench: Test benches require simultaneous acquisition of 8 AI signals (e.g., engine thrust via 0–10 V load cells, exhaust temperature via Pt1000) and control of 4 AO-driven fuel valves (4–20 mA). The integrated design of GE VMIVME-7658 simplifies wiring, and its 16-bit accuracy ensures test data errors ≤ 0.05%, meeting aerospace-grade requirements.
3. Steel Mill Cold Rolling Production Line: In cold-rolled strip thickness control, GE VMIVME-7658 collects AI signals from thickness sensors (4–20 mA) and roller temperatures (Pt100), while AO channels adjust roller pressure. Its filter suppresses electromagnetic interference from rolling mills, keeping strip thickness deviations within ±0.01 mm.

Competitor Comparison: GE VMIVME-7658

Selection Recommendations & Precautions

Selection Recommendations

1. Confirm VME System Compatibility: Prioritize use in VMEbus enclosures compliant with Rev.C.1. When pairing with the GE VMIVME-7486 controller, ensure the controller firmware version is ≥ V2.0 (refer to the compatibility list on [Link to GE VMIVME-7658]).
2. Evaluate Channel Requirements: GE VMIVME-7658 is optimal for projects needing ≤ 8 AI and ≤ 4 AO channels. For more channels, parallel expansion of up to 8 GE VMIVME-7658 modules is supported via the VMEbus.
3. Choose Genuine GE Products: Non-genuine modules often have lower MTBF (< 5 million hours) and larger accuracy deviations (> ±0.1% FS). Purchase from authorized GE distributors to avoid system failure risks.

Precautions

1. Do Not Cross-Architecture Use: GE VMIVME-7658 is exclusively for VMEbus enclosures. Do not connect it to VPX, CompactPCI, or other architectures—forced adaptation will cause bus communication failures.
2. Regular Calibration: Perform automatic calibration via the GE configuration tool quarterly to prevent accuracy degradation from temperature drift. For high-temperature environments (≥ 50°C), calibrate every 2 months.
3. Power Off for Installation/Replacement: Always turn off the enclosure power before inserting or removing GE VMIVME-7658 to avoid damaging internal circuits or the VMEbus.
4. Ensure Enclosure Cooling: Maintain good ventilation in the VME enclosure and reserve ≥ 5 mm of cooling space around the module. Avoid ambient temperatures exceeding +60°C, which triggers the module’s overload protection.
   
   

   VMIVME-7658