Shinkawa FRP-338 P-26-54A P-26-54B Circuit Board Module
Shinkawa FRP-338 P-26-54A P-26-54B Circuit Board Module
Shinkawa FRP-338 (including part sub-variants P-26-54A and P-26-54B) is a specialized industrial printed circuit board (PCB) module developed by Shinkawa Electric. Designed primarily for vibration monitoring, machine protection systems, and high-precision sensor signal processing in heavy industrial turbomachinery, this module interfaces critical field measurements with central control racks.
Product Introduction & Overview
The Shinkawa FRP-338 series functions as a dedicated signal conditioning, processing, and communication interface module within Shinkawa monitoring racks (such as VM series systems). Sub-models P-26-54A and P-26-54B represent specific hardware revisions or channel configuration variants optimized for processing signals from eddy-current displacement sensors, seismic velocity transducers, or accelerometers.
Primary Function: Real-time signal conditioning, vibration monitoring, and safety trip relay interface.
Target Applications: Steam turbines, gas turbines, large compressors, industrial pumps, and rotating machinery protection.
Technical Parameter List
| Parameter Category | Technical Specifications |
| Manufacturer | Shinkawa Electric Co., Ltd. |
| Base Model Number | FRP-338 |
| Part / Revision Numbers | P-26-54A / P-26-54B |
| Device Type | Vibration Monitoring / Signal Processor Card |
| Power Supply Requirements | System backplane powered (Typically +24V DC / ±15V DC internal bus) |
| Input Signal Types | Proximity Probe / Eddy-Current Transducer, Seismic Vibration |
| Output Interfaces | Analog 4–20 mA, Buffered Raw Signal, System Backplane Bus |
| Form Factor | Rack-mountable plug-in PCB card with front-panel ejectors |
| Isolation Class | Galvanic isolation between field input and internal logic |
Product Features & Core Advantages
High-Precision Signal Processing: Filters noise and delivers accurate peak-to-peak vibration and axial displacement measurements.
Industrial Grade Reliability: Built with industrial-grade solid-state components designed for continuous 24/7 critical machinery protection.
Hot-Swappable Backplane Design: Allows straightforward replacement during maintenance windows without dismantling system wiring.
Dual Revision Flexibility: Covers revision-specific installations with tailored trace impedance and channel handling in P-26-54A and P-26-54B versions.
Model Classification
FRP-338 Base Series: Master card architecture for signal processing backplane integration.
FRP-338 P-26-54A: Hardware variant optimized for standard channel impedance and direct sensor processing.
FRP-338 P-26-54B: Updated circuit board revision featuring updated passive filter configurations and enhanced noise immunity.
Environmental Tolerance Conditions
| Condition | Rating / Range |
| Operating Temperature | 0°C to +60°C (32°F to 140°F) |
| Storage Temperature | -20°C to +70°C (-4°F to 158°F) |
| Relative Humidity | 5% to 95% RH (Non-condensing) |
| Vibration Resistance | Compliance with IEC 60068-2-6 standard industrial cabinet vibration limits |
| Atmospheric Environment | Non-corrosive gas, dust-controlled cabinet enclosure recommended |
Installation Method
Power Shutdown & Safety: Turn off the power supply to the rack frame or ensure slot-level isolation before insertion/removal.
ESD Protection: Wear a grounded electrostatic discharge (ESD) wrist strap prior to handling the circuit board.
Card Alignment: Align the top and bottom card guides of the target rack slot with the PCB edges.
Insertion: Slide the FRP-338 module firmly into the slot until the rear multi-pin edge connector seats completely into the backplane.
Securing: Fasten the front panel locking screws/ejector latches to secure the module into place.
Operating Instructions
Pre-Power Verification: Confirm that field sensor cabling matched to P-26-54A or P-26-54B pinout diagrams is correctly wired and grounded.
Calibration Check: Verify zero-point and span calibration using a simulated sensor input prior to bringing the monitored machinery online.
Status Monitoring: Observe front panel LEDs or system rack diagnostic indicators to confirm healthy power rail supply and active signal processing.
Maintenance Schedule: Inspect connector pins periodically for oxidation or physical wear during routine system overhauls.