Shinkawa VM-704B/CS1/TB1/L02 Vibration Monitor
Overview
The Shinkawa VM-704B/CS1/TB1/L02 vibration monitor belongs to the Shinkawa VM series, providing continuous vibration monitoring and protection for rotating machinery. The monitor conditions the sensor signal, compares the level with the alarm setpoints and operates the alarm and trip relays when the machine vibration exceeds the limit. The configuration code identifies the cable, terminal and option set for the installed channel, and the monitor is supplied with the matching sensor as a complete system.
The VM-704B channel is ordered complete with the cable and terminal configuration of the part number, and the monitor is verified against the installed set before shipment. The alarm and trip functions are set independently during commissioning, and the DC output feeds the recorder or the DCS for continuous trending. The measured values are cross-checked with the portable data collector during the periodic verification of the protection channel.
Engineering and Design
The VM-704B accepts the signal from the vibration sensor installed on the bearing housing and produces a conditioned DC output proportional to the measured vibration. The alarm and trip functions are set independently, so the machine can give a warning before the shutdown limit is reached. The relay outputs are wired into the machinery protection circuit and the DC output feeds the recorder, the DCS or the portable data collector for trend analysis.
The suffix codes in the part number define the input cable length and the terminal block arrangement used in the specific installation, and the monitor is checked against the machine train configuration before shipment. The VM series follows the Shinkawa design with rack or panel mounting, outline drawings and wiring diagrams available from the manufacturer. Legacy Shinkawa systems in the region are supported by this spare channel, keeping the installed protection scheme operational.
The VM-704B channel follows the standard installation practice: the sensor cable is routed from the machine to the monitor input, the relay outputs are wired into the protection circuit, and the DC output feeds the recorder or the DCS. The alarm and trip setpoints are adjusted independently during commissioning, so the warning threshold can be set below the shutdown limit. The monitor is tested with the simulated signal before the machine is started, and the measured values are compared with the portable data collector readings during the initial verification. The suffix codes of the part number define the cable length and the terminal block arrangement, so the channel is ordered complete and ready for installation. Shinkawa supports the legacy VM series through the discontinued products channel, and the outline drawings and wiring diagrams are available from the manufacturer. The spare channel is verified against the installed configuration before shipment. For plants that operate a Shinkawa monitoring system, the VM-704B provides a reliable spare channel that keeps the protection scheme operational while the failed unit is repaired. The channel is commissioned by the instrument technician and the setpoints are recorded in the plant log. The monitor is supplied in the rack or panel format of the VM series for the control room installation. The spare is kept in stock for the machines where the channel is part of the protection scheme.
Key Features
- Continuous vibration monitoring channel
- Independent alarm and trip setpoints
- DC output for DCS, recorder or data collector
- Rack or panel mounting
- Supplied with matching sensor
- Part of Shinkawa VM series
Applications
The VM-704B is used on turbines, compressors, pumps and large motors in power plants, oil and gas facilities and industrial plants where bearing housing vibration is monitored for protection and diagnostics.
Specifications
| Product line | Shinkawa VM seriesnType: vibration monitornModels: VM-704B with CS1/TB1/L02 optionsnInput: vibration sensor signalnOutputs: alarm, trip, DC signalnMounting: rack or panelnManufacturer: Shinkawa Electric Co., Ltd. |
Why Seven Star LLC
Seven Star LLC supplies Shinkawa VM series monitors to reliability teams across Oman and the GCC. Every part number is checked before your order is confirmed, and our team helps you match the monitor and sensor configuration to your existing channel.
The L02 suffix on the VM-704B/CS1/TB1/L02 identifies a specific cable-length option, and we confirm this against your actual sensor-to-monitor run distance before an order is placed, since ordering the wrong cable length on a legacy Shinkawa channel typically means field-splicing at the terminal block rather than a clean drop-in replacement. We also help plants that cross-check their protection channels with a portable data collector confirm the monitor DC output scaling matches what the collector software expects, avoiding a trending discrepancy that could otherwise be mistaken for a genuine change in machine condition.
Keeping Legacy Protection Channels Documented
Where the original commissioning records for a VM-704B channel are incomplete or have been lost over years of plant ownership changes, our team can help reconstruct the setpoint history from the recorder trend data and the current relay wiring, giving your reliability engineer a documented baseline to work from before the next setpoint review rather than relying on undocumented tribal knowledge passed between technicians.
Also available: SHINKAWA VM-5Y1-02/IS0 Relay Module
Request a Quote for Shinkawa VM-704B/CS1/TB1/L02 Vibration Monitor
Submit a formal inquiry through our RFQ page with the VM-704B part number and your sensor configuration. We will confirm the matching channel and respond with a formal quotation. | Inquiry Form
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Shinkawa monitors and sensors listed
Most items on this page belong to the VM-5 monitoring rack:- VM-5K dual vibration monitor, VM-5T thrust position module and VM-5S dual tachometer
- VM-5F temperature monitor and VM-5P3 phase marker module
- VM-5Y relay modules, the VM-5Z1 power supply and the VM-5W1 instrumentation rack
- VM-53 communication module
Where Shinkawa vibration monitoring is used
Shinkawa systems measure shaft vibration, axial (thrust) position, speed, phase reference and bearing temperature on steam turbines, gas turbines, generators, compressors, pumps and fans. The monitors provide alarm and trip relays for machine protection and buffered signals for analysis. In the GCC they are met mainly in power stations, desalination plants, refineries and petrochemical units with Japanese or Korean machinery packages.Ordering Shinkawa parts: what we need
Shinkawa model codes are long and every field counts. A monitor such as VM-5K-411512-000-000-111-0/IS0/EX5 defines input type, range, options and suffix codes, so please copy the complete string from the module label, including everything after the slashes. For sensors, send the VL or FK model code, probe tip diameter, cable length and the matching driver or converter model, since probe, extension cable and driver work as a calibrated set. A serial number and a photo of the label help us confirm the item in the manufacturer's documentation. Where a model is no longer produced, we propose the successor the manufacturer names.Browse Shinkawa products by category: Vibration.
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