Core Functionality
The IS200VSVOH1B operates as a high-performance servo control board within the GE Mark VIe system. This VME-based module manages up to four servo axes simultaneously. It generates precise PWM outputs for driving hydraulic or electric servos. The board also processes feedback from LVDT and RVDT position sensors. Consequently, it ensures accurate valve and actuator positioning for turbine control.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | General Electric (GE) |
| Series | Mark VIe |
| Category | Servo Control Board |
| Part Number | IS200VSVOH1B |
| Axes Controlled | 4 (independent) |
| PWM Outputs | 8 (2 per axis, ±10 VDC or 4-20 mA) |
| Feedback Inputs | 8 analog (LVDT/RVDT, ±10 VDC) |
| Resolution | 16-bit (output), 14-bit (input) |
| Update Rate | 1 kHz per axis |
| Communication | VMEbus (A24/D32) |
| Onboard Components | 3 DSPs, 2 FPGAs, 8 memory ICs |
| Energy Storage | 1000 µF capacitor bank (hold-up) |
| Power Draw | 2.2 A at 5 VDC; 0.8 A at ±15 VDC |
| Dimensions | 16.0 cm x 10.0 cm (6U VME) |
| Weight | 0.6 kg |
| Storage Temperature | -40°C to +85°C |
| Operating Temperature | -30°C to +65°C |
Control Architecture
The IS200VSVOH1B integrates three digital signal processors for distributed computation. One DSP handles the servo loop closure for all axes. Another processor manages the PWM generation and output conditioning. The third DSP oversees communication with the VME backplane. Additionally, two FPGAs provide flexible I/O mapping and timing control. This architecture delivers deterministic performance for critical motion applications.
Feedback Processing
This servo board accepts LVDT and RVDT inputs with excitation voltages. It also supports tachometer and encoder feedback for velocity control. The module includes software-configurable filters for each feedback channel. Moreover, the unit performs automatic calibration during initialization. These features ensure stable and responsive servo operation.
Protection and Diagnostics
The IS200VSVOH1B includes comprehensive fault detection mechanisms. It monitors over-current, over-temperature, and undervoltage conditions. The board also implements a watchdog timer for processor integrity. Diagnostics report specific fault codes through the VME interface. Six LED indicators provide immediate visual status confirmation.
Details
| Weight | 0.1 kg |
|---|---|
| Dimensions | 25 × 108 × 127 mm |
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