6G Controls - Leading Supplier of New & Original PLC 、DCS Parts and Automation Controller
Overview:
The Foxboro FBMSVH control card is used for closed-loop control systems to control the valve position of pneumatic or hydraulic servos. It accepts input commands in the range of 4-20mA or 0-10VDC. Feedback input can be derived from an LVDT with a 0-10V signal. After processing the DEH command and LVDT feedback voltage using P or P+I regulation, it outputs ±27mA current to drive the servo valve. The module operates with an external ±15V power supply, which can be connected to the respective input terminals.
Key Features:
- Selectable current or voltage input (DEH) with separately adjustable zero point and full-scale range using S2 switch.
- Equipped with an LVDT modulator and demodulator with adjustable amplitude and a driving current of 50mA.
- Can also output a 0-20mA valve position signal (impedance 50Ω).
- Allows for external shutdown contacts and adjustable proportional and integral control loops.
Technical Specifications:
- Temperature:
- Storage Temperature Range: -40°C to 70°C
- Operating Temperature Range: 0°C to 50°C
- Power Supply:
- Power Supply Voltage: ±15VDC
- Voltage Regulation Accuracy: ±1%
- Ripple/Noise: ±1%
- Power Consumption:
- +15V Power Supply: 250mA
- -15V Power Supply: 250mA
- Command Input:
- Input Impedance (Current Input): 500Ω
- Input Impedance (Voltage Input): 4.3KΩ
- Maximum Command Current: 21mA
- Maximum Command Voltage: 11.0VDC
- Feedback (LVDT Feedback):
- Demodulator Maximum Input: 18Vpp (6.36Vrms)
- Oscillator Frequency:
- Standard Value: 1000Hz
- Error: 10%
- Feedback Circuit Adjustment Range:
- Bias: Maximum (at G=1) -8VDC to 8VDC (adjustable)
- Gain: Adjustable within the range of 1 to 20
- External Current Feedback (4-20mA):
- Load Impedance (Current Input): 500Ω
- Maximum Feedback Current Input: 21mA
- PI Control:
- Proportional (Gain): Adjustable within the range of 0 to 20
- Integral:
- Integral Time Constant: Adjustable within the range of 1 to 20 seconds
- External Shutdown:
- Closure of external contacts triggers shutdown with an output current of -10mA.
- Power Amplifier:
- Output Current: Maximum ±30mA (80Ω)
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Conect US
E-mail: [email protected]
Business hours: 24h/7d
Address: No.601, Hongwen Liuli,Siming District, Xiamen,China
