integrated Vital Processing Interlocking (iVPI®) Direct Input Board
The Integrated Vital Processor Interlocking (iVPI®) system Vital Direct Input (DI) Board supports bipolar two-wire field device connections with sixteen isolated inputs for reliable, vital DC current sensing in switch and line circuits.
Key Features
- Reliable performance from -40°C to +70°C
- Clear diagnostics with input-specific and status LEDs
- AREMA-compliant
Customer Benefits
- Electronic revision configuration
- Vital inputs for DC current sensing
Sixteen Inputs, One Reliable Board
The iVPI® Vital DI Board supports two-wire field device connections for each input, allowing devices with opposite polarity to form a bipolar input circuit. This configuration is commonly used in switch machine point indication and line circuits.
The iVPI DI Board provides sixteen isolated vital inputs per board for DC input current sensing. Each input circuit is vitally isolated from other vital inputs, ground, and logic power, and includes two connections to field equipment for secure and reliable operation.
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iVPI® Direct Input Board
Applications
Direct Input Boards input the status information from vital signaling hardware – including switch machines, track circuits, and line circuits. Its unique time interval sampling technique safeguards vital inputs, making these immune to inadvertent true readings from induced AC frequencies.