SHINKAWA VM-5P3-1-00-00-0/IS0 Phase Marker Module

Overview

The Shinkawa VM-5P3 is a Phase Marker Unit designed for the VM-5 series machinery protection system, converting keyphasor signals from rotating machinery probes into shaped pulses for speed measurement, phase referencing, and diagnostic analysis.

With a 2-channel input and buffered pulse outputs, the VM-5P3 delivers reliable phase reference signals essential for shaft vibration analysis and balance monitoring of turbomachinery in power, oil, and gas applications.

Engineering & Design

The unit accepts keyphasor signals from eddy-current displacement sensors such as the VK-202A and RD-05A targets, with an input impedance of approximately 10k ohm and 2 available channels for redundancy or multi-keyway monitoring.

Signal conditioning shapes the raw keyphasor pulse and drives a 50-ohm impedance buffer output, delivering a clean, stable phase marker to the VM-5 monitor channels for synchronous vibration analysis.

Key Features

• 2-channel phase marker signal input
• Shaped pulse output via buffer amplifier with 50 ohm impedance
• Compatible with VK-202A and RD-05A eddy-current displacement targets
• System OK alarm contacts functional when unit is mounted
• Operating temperature 0°C to +65°C
• Installs in VM-5H or VM-5W instrument racks
• CE marked VM-5 series monitor unit
• Input impedance approximately 10k ohm

Applications

• Phase reference for shaft vibration monitoring
• Speed measurement input for turbomachinery
• Balance and diagnostic analysis of rotating equipment
• Power plant and rotating machinery protection systems

Specifications

Compatibility & Integration

The VM-5P3 is fully integrated with the VM-5 machinery monitoring system, installing one unit per rack alongside vibration, displacement, and speed monitors in VM-5H and VM-5W instrument racks.

Machinery Protection Support

Seven Star LLC supports complete VM-5 system planning, including sensor selection, module mix, and rack configuration for turbines, compressors, and other critical rotating equipment.

Our team provides technical guidance for keyphasor installation and phase-referenced vibration analysis to strengthen your machinery protection programme.

Operational Benefits

The VM-5P3 delivers clean, repeatable phase reference signals that underpin accurate balance and vibration analysis of critical turbomachinery.

Its defined input and output characteristics make it straightforward to integrate into both new VM-5 racks and upgrades of existing monitoring schemes.

Reliable phase markers reduce the risk of misleading diagnostics and support confident machinery condition decisions.

Phase marker reliability directly supports the accuracy of shaft vibration analysis, and the buffered output of the VM-5P3 delivers a clean signal even in electrically noisy plant environments.

Standardised keyphasor handling simplifies commissioning and reduces the risk of incorrect phase reference wiring during installation.

Accurate phase referencing reduces diagnostic uncertainty and supports confident decisions on machine condition.

For machinery protection projects where the Shinkawa VM-5P3 must perform reliably for decades, Seven Star LLC supplies the Shinkawa VM-5P3 with full documentation, and our specialists configure every Shinkawa VM-5P3 for your rack and sensor arrangement.

The VM-5P3 phase marker module generates the key phase pulse for the vibration monitoring, and the module provides the once per revolution reference signal for the analysis.

The phase reference is used for the order analysis of the vibration spectrum, and the marker module is installed in the monitoring rack.

The Shinkawa VM-5P3 phase marker module provides the phase reference signal for the vibration system, and the Shinkawa VM-5P3 phase marker module is installed in the VM-5 monitoring rack.

The Shinkawa VM-5P3 phase marker module is used with the shaft key phasor, and the VM-5P3 module provides the reference for the order analysis.

Why Seven Star LLC

Seven Star LLC supplies genuine Shinkawa VM-5 series monitoring modules from our Muscat, Oman facility for turbomachinery protection projects across the GCC.

Our team assists with module selection, rack configuration, and sensor compatibility for complete machinery protection systems.

Request a Quote for SHINKAWA VM-5P3-1-00-00-0/IS0 Phase Marker Module

For the Shinkawa VM-5P3, phase marker unit or any related control and instrumentation requirement, contact the Seven Star LLC team. Submit a formal inquiry through our RFQ page with your configuration and application details, and our specialists will respond with a detailed commercial proposal and the official Shinkawa documentation.

Confirming the VM-5P3 Configuration

The full model code of this unit, VM-5P3-1-00-00-0/IS0, defines its options, so a replacement should be matched character for character. Before ordering, record the complete code from the module label, the rack type (VM-5H or VM-5W; the unit is not used in VM-5G racks), the keyphasor probe and driver models, and which monitors take the phase reference. Also note the shaft target geometry, such as a keyway or raised key, because it affects the pulse the unit has to shape.

Installation and Commissioning

• Plan the work with operations, since removing the phase marker affects phase and speed data used by the monitors and any connected diagnostic system.
• Check the keyphasor probe gap with the machine stopped, making sure the probe sees both the shaft surface and the notch or key within its linear range.
• Terminate probe cables with correct shield grounding, at one end only, to avoid ground loops.
• With the machine running, check the pulse on the buffered output with an oscilloscope: one clean pulse per revolution, without double triggering.
• Confirm that the speed shown by the monitors matches an independent reading, and that the System OK contacts are healthy.

Troubleshooting Phase Marker Problems

Missing or unstable phase readings usually trace back to the probe side: wrong gap, runout at the target, damaged or oily targets, or loose connectors in junction boxes. Double pulses per revolution often come from a target with sharp edges or surface defects that the probe also detects. If the input signal is clean but the output is not, then the module itself is the suspect. Recording the probe gap voltage at commissioning gives a useful baseline for later fault finding.

Applications in Oman and the GCC

Phase reference is essential for balancing, run-up and coast-down analysis on gas and steam turbines, generators and centrifugal compressors in the region’s power, desalination, refining and LNG facilities. Many plants run VM-5 systems that have been in service for years, so keeping a spare phase marker unit available helps avoid losing phase data during critical diagnostic work.

Sourcing Through Seven Star LLC

Share the module code and rack details, along with the sensor models in use. We will check the configuration and confirm availability and lead time.

Related Products

• Shinkawa VL-202A08R-2012/EX5 Displacement Sensor
• Bruel-Kjaer -AO-0087-D050
• 3500/40M Proximitor® Monitor
• Shinkawa VM-701B/CS1/TB1 Vibration Monitor
• Shinkawa VL-452A11A-2112/EX5 Sensor VK-A Series
• Bruel & Kjaer 2250-L-D21 Class 1 Sound Level Meter

See also: SHINKAWA VM-5K-411512-000-000-111-0/IS0/EX5 Dual Vibration Monitor.