Description
The FOXBORO FBMSVH is a high-precision LVDT (Linear Variable Differential Transformer) control card designed for closed-loop valve positioning. It serves as a critical interface for driving pneumatic or hydraulic servos in industrial turbine and process control systems, ensuring accurate feedback and high-speed response for mission-critical operations.
Technical Parameters
- Model: FBMSVH
- Input Signal: Selectable 4-20mA or 0-10V DC (DEH Command)
- Feedback Input: LVDT signal (0-10V range)
- Output Current: Maximum ±27mA to ±30mA (80Ω load)
- Power Supply: External ±15V DC
- Oscillator Frequency: Standard 1000Hz (±10% error)
Product Specifications
- Control Type: P or P+I (Proportional + Integral) regulation
- Input Impedance: 500Ω (Current) / 4.3KΩ (Voltage)
- Response Time: Approximately 50ms
- Shutdown Logic: External contact closure triggers -10mA output
- Operating Temp: 0°C to 50°C (32°F to 122°F)
- Humidity: 5% to 95% non-condensing
FOXBORO FBMSVH
Application Areas
- Steam and gas turbine valve position control
- Hydraulic servo-mechanism management
- Power plant Digital Electro-Hydraulic (DEH) systems
- Large-scale industrial actuator positioning
- Closed-loop motion control in petrochemical refineries
Product Q&A
- Q: What type of feedback device is compatible with the FBMSVH?
- A: It is specifically designed to interface with LVDT sensors providing a 0-10V feedback signal.
- Q: How is the control loop adjusted on this module?
- A: The board features adjustable zero-point, full-scale range, and PI gain settings via onboard switches and potentiometers.
- Q: Does it support emergency shutdown?
- A: Yes, the module includes terminals for external shutdown contacts that immediately drive the valve to a safe position.
