Shinkawa MGP-72 MGP72 P-26-50A P-26-50B Circuit Board Module
Shinkawa MGP-72 MGP72 P-26-50A P-26-50B Circuit Board Module
The Shinkawa MGP-72 (also referred to as MGP72. including sub-variants P-26-50A and P-26-50B) is a specialized industrial printed circuit board (PCB) module manufactured by Shinkawa Electric Co., Ltd. Designed for integration into Shinkawa machinery protection frameworks, this module provides precise signal processing, continuous monitoring, and fault detection for rotating turbomachinery across critical process industries.
Product Introduction / Overview
The Shinkawa MGP-72 / MGP72 serves as a core signal processing card within Shinkawa rack-mounted monitoring systems (such as the VM series). Hardware sub-variants P-26-50A and P-26-50B represent specific circuit revisions designed to condition inputs from proximity displacement probes, velocity transducers, and accelerometers into standardized control signals.
Primary Function: Condition transducer inputs, execute real-time vibration/position signal analysis, and output analog signals or alarm triggers.
Target Applications: Steam and gas turbines, boiler feed pumps, large industrial compressors, centrifuges, and heavy rotating equipment in power generation and petrochemical facilities.
Technical Table
| Condition | Operational Rating / Limits |
| Operating Temperature | 0°C to +60°C (32°F to 140°F) |
| Relative Humidity | 5% to 95% RH (Non-condensing) |
| Vibration Tolerance | IEC 60068-2-6 compliant for industrial control cabinets |
| Shock Resistance | Rated for standard industrial rack environments (up to 15g, 11 ms) |
| Atmospheric Conditions | Non-corrosive gas environment; installation in NEMA/IP-rated cabinet required |
Environmental Tolerance Conditions
| Condition | Operational Rating / Limits |
| Operating Temperature | 0°C to +60°C (32°F to 140°F) |
| Relative Humidity | 5% to 95% RH (Non-condensing) |
| Vibration Tolerance | IEC 60068-2-6 compliant for industrial control cabinets |
| Shock Resistance | Rated for standard industrial rack environments (up to 15g, 11 ms) |
| Atmospheric Conditions | Non-corrosive gas environment; installation in NEMA/IP-rated cabinet required |
Operating Instructions
Safety Protocol: Turn off rack slot power or follow authorized hot-swap procedures before handling. Wear a grounded electrostatic discharge (ESD) wrist strap.
Card Insertion: Align the top and bottom edges of the MGP-72 PCB with the slot guide rails inside the rack chassis.
Seating Module: Push the board inward smoothly until the rear multi-pin connector seats firmly into the backplane bus. Fasten the front-panel captive screws or ejector latches.
Wiring & Grounding: Connect field transducer cabling strictly according to the pinout schema for the P-26-50A or P-26-50B variant. Ensure cable shields are grounded at a single terminal point.
Pre-Commissioning Check: Verify output calibration (zero point and span) with a signal simulator prior to starting monitored machinery.
Fault Diagnosis
| Symptom / Indicator | Potential Root Cause | Recommended Action |
| Power/Status LED Off | Loose connector seating or missing backplane power rail | Re-seat the module fully into the rack slot; verify main rack power supply output. |
| Signal Output Out of Bounds | Incorrect sensor gap setting or field wiring disconnect | Check field sensor cabling continuity; verify probe gap distance with a digital multimeter. |
| Signal Drift or High Noise | Ungrounded shield or strong electromagnetic interference | Verify shield grounding configuration; isolate field signal cables from high-voltage AC lines. |
| Alarm / Fault LED Latched | Monitored parameter exceeded setpoint or internal board fault | Check raw signal output via front test point; verify whether fault originates in field wiring or circuit card. |
Related Models of the Same Series
Shinkawa FRP-249 (P-25-1A / P-25-1B Series)
Shinkawa FRP-282 (P-24-35A / P-24-35B Series)
Shinkawa FRP-320 (P-26-54A / P-26-54B Series)
Shinkawa FRP-338 (P-26-54A / P-26-54B Series)
Shinkawa VM-5 / VM-7 Machinery Protection Rack Assemblies
Storage Conditions
Storage Temperature: -20°C to +70°C (-4°F to 158°F)
Storage Humidity: 5% to 95% RH (Non-condensing)
Packaging Requirement: Sealed inside an anti-static ESD shielding envelope with a desiccant pack.
Environment: Indoor, climate-controlled warehouse free from direct sunlight, corrosive vapor, and mechanical vibration.