VICKSBURG MARINE 1992-0550 | SPEED VOLTAGE LIMITER

⚙️ Product Overview The Vicksburg Marine 1992-0550 is a specialized industrial speed voltage limiter designed for marine propulsion and power generation systems. It serves as a critical safety and performance component, ensuring that the engine speed or generator output voltage remains within strictly defined operational parameters to prevent mechanical damage or electrical faults.

📋 Technical Specifications

• Product Model: 1992-0550
• Application: Speed/Voltage Limiting for Marine Control Systems
• Input Voltage Range: Typically 12/24 VDC (Nominal)
• Mounting Dimensions: Standard industrial modular housing; approximately 100 mm x 80 mm x 50 mm
• Weight: Approximately 0.45 kg
• Origin: United States

🔧 Mechanical Installation

• Mounting Method: The unit is designed for DIN-rail mounting or direct panel screw-mount via the integrated flange base. Ensure the unit is installed in a vibration-dampened area of the engine room.
• Clearance Requirements: Maintain a minimum of 25 mm clearance on all sides to allow for ambient air circulation around the heat-dissipating chassis.
• Heat Dissipation: Avoid installation in direct proximity to exhaust manifolds or high-temperature steam lines. Use forced ventilation if the ambient temperature in the enclosure exceeds 50 °C.

⚡ Electrical Wiring

• Terminal Definition: Terminals are numbered for control input, sensor feedback (speed/voltage signal), and output control signal. Refer to the specific wiring label on the side of the unit casing.
• Wire Gauge: Use shielded twisted-pair cabling for sensor signals to minimize electromagnetic interference (EMI). Recommended wire gauge is 0.75 mm² (18 AWG).
• Grounding Standards: The device chassis must be bonded to the marine vessel’s common earth ground using a star-washer connection to ensure a low-impedance path for noise suppression.

🌐 Configuration Steps

• Signal Calibration: Use the integrated potentiometers (trim pots) on the front face of the 1992-0550 to set the specific threshold limits.
• Input Scaling: Ensure the input signal range (e.g., 0-5V or 4-20mA) matches your control system output.
• Testing: Once connected, slowly ramp up the engine speed or voltage and observe the limit activation point. The unit should provide an immediate corrective signal to the governor or AVR (Automatic Voltage Regulator) when the threshold is reached.

❓ Common Questions (Q&A)

• How do I know if the limit threshold is set correctly? Use a calibrated digital multimeter to measure the signal output at the device terminals while the engine is running at a controlled speed.
• Can this unit be used in high-salinity environments? The internal circuitry is typically conformally coated; however, the unit should be housed within an IP65 or better-rated sealed electrical cabinet to prevent salt mist corrosion.
• What happens if the internal fuse blows? The unit is designed with a non-serviceable internal fuse. If the device fails to output a signal despite valid inputs, the unit likely requires professional factory refurbishment or replacement.