Shinkawa MDP-89 MDP89 P-24-674A P-24-674B Circuit Board Module
Shinkawa MDP-89 (MDP89) Module—associated with part references P-24-674A and P-24-674B—is a high-reliability display and signal processor unit engineered by Shinkawa Electric. Designed for critical turbomachinery protection and condition monitoring architectures (such as the VM series systems), the MDP-89 provides real-time visualization, signal routing, and alarm state processing for relative shaft vibration, axial position (thrust), and speed inputs on high-speed turbines, compressors, and boiler feed pumps.
Product Advantages and Features
High-Precision Signal Conditioning: Converts low-noise field signals from proximity probes and drivers into accurate real-time readings without phase shift or signal loss.
Dual Part Number Hardware Interactivity: Compatible with both P-24-674A and P-24-674B sub-circuit board assemblies for extended system cross-compatibility.
Fast Response Alarm Processing: Continuously compares live vibration and displacement metrics against Alert and Danger setpoints for rapid relay tripping during critical mechanical events.
Superior EMI/RFI Shielding: Hardened board layout suppresses ambient high-frequency electrical noise typical of power generation and petrochemical facilities.
Self-Diagnostic Integrity: Built-in hardware health checks continuously monitor power rails, signal paths, and board execution logic to minimize false trip risks.
Other Models in the Same Series
| Model / Part Code | Category | Primary Function |
| MDP-89 (MDP89) | Display / Processor Module | Main display and processing card (P-24-674A / P-24-674B) |
| VM-3D2 | Thrust Monitor Card | Dual-channel axial displacement monitoring module |
| VM-3V2 | Vibration Monitor Card | Dual-channel shaft vibration monitoring module |
| VK-202A / VK-202A2 | Driver / Preamplifier Unit | Preamplifier converting probe gap variations into voltage output |
| VL-202A Series | Proximity Sensor Probes | Non-contact eddy-current probes supplying raw signals to VM racks |
Installation and Maintenance
Rack Installation: Disconnect backplane rack power. Align the MDP-89 circuit board guides with the target slot on the VM series chassis, slide in firmly until the rear connector seats completely, and secure top and bottom panel retention thumbscrews.
Wiring & Interconnect Check: Verify that terminal connections for board versions P-24-674A or P-24-674B align correctly with system backplane jumpers.
Shielding Verification: Ensure all incoming sensor cable shields connect to the designated system grounding bar at the rack side only to avoid ground loops.
Routine Calibration: Inspect board contacts and verify display/output accuracy using a calibrated signal source during scheduled annual plant maintenance shutdowns.