SHINKAWA VM-5P3 Phase Reference Module

The SHINKAWA VM-5P3 is a specialized phase reference module designed for the VM-5 series machinery protection system. This module provides speed measurement and Keyphasor signals essential for vibration phase analysis, rotor balancing, and synchronous monitoring applications on steam turbines, gas turbines, and high-speed compressors.

Technical Specifications

The module processes input signals from FK series eddy current probes, magnetic sensors, or other compatible transducers, with programmable trigger thresholds and hysteresis to ensure reliable pulse detection. Speed measurement capability spans a wide range suitable for both startup and normal operating conditions, with high resolution for accurate phase angle determination.

• Input Type: FK series eddy current probe, magnetic pickup, or proximity transducer

• Output Signals: Keyphasor pulse output, speed indication

• Speed Range: Wide range covering startup to overspeed conditions

• Trigger Threshold: Field-adjustable for reliable pulse detection

• Form Factor: Single slot in VM-5H3 or VM-5W1 chassis

• Operating Temperature: 0°C to 65°C

• Compatibility: Integrated with VM-5 series vibration and position monitors

• Applications: Turbine speed monitoring, phase angle measurement, balancing

Vibration Analysis Integration

The Keyphasor signal from the VM-5P3 is distributed to other VM-5 series monitoring modules via the backplane, enabling synchronous sampling and phase-referenced measurements. This integration allows for the calculation of 1X vibration magnitude and phase angle, critical parameters for diagnosing unbalance conditions and performing field balancing operations.

System Configuration

The VM-5P3 is typically installed in the first slot of a VM-5 series chassis to provide phase reference to all downstream monitoring modules. Front-panel indicators show power status, signal presence, and output activity. Configuration is performed through front-panel controls, with settings retained in non-volatile memory.