Shinkawa CPP-128 P-26-74A P-26-74B Circuit Board Module
Product Introduction / Overview
The Shinkawa CPP-128 P-26-74A / P-26-74B Circuit Board Module is a high-performance signal processor and monitoring board manufactured by Shinkawa Electric Co., Ltd. Designed for industrial-grade vibration monitoring, turbomachinery protection, and Condition Monitoring Systems (CMS), this processing module translates sensor input signals into real-time operational data for critical rotating machinery such as turbines, compressors, pumps, and large industrial motors.
The modular assembly consists of the primary processor carrier board (P-26-74A) paired with its high-density interface/daughterboard unit (P-26-74B). Together, they deliver precise signal filtering, isolation, dynamic monitoring, and continuous diagnostic output to keep industrial automation setups safe from catastrophic mechanical failure.
Technical Specifications
| Specification Parameter | Technical Detail |
| Manufacturer | Shinkawa Electric Co., Ltd. |
| Model Series | CPP-128 Series |
| Part / Revision Numbers | Main Board: P-26-74A / Sub-Board: P-26-74B |
| Module Type | Processor & Signal Interface Circuit Board Module |
| Primary Application | Vibration Monitoring / Turbomachinery Protection (CMS) |
| Input Signal Types | Eddy-current proximity probes, velocity sensors, accelerometers |
| Output / Interface | Analog outputs (4-20 mA / 1-5 VDC), digital bus/rack backplane interface |
| System Compatibility | Shinkawa VM / WK / Centralized Monitoring Racks |
| Power Supply Requirement | Backplane powered (Standard 24 VDC rack supply) |
| Isolation Rating | Channel-to-channel and input-to-output optical / transformer isolation |
Environmental Tolerance Conditions
Operating Temperature Range: 0°C to +60°C (32°F to 140°F)
Non-Operating Storage Temperature: -20°C to +70°C (-4°F to 158°F)
Relative Humidity: 5% to 95% RH (Non-condensing)
Vibration Resistance: 10 to 55 Hz, 0.15 mm displacement peak-to-peak
Shock Resistance: 15 g peak (11 ms duration)
Electromagnetic Compatibility (EMC): Heavy industrial immunity (EN 61000-6-2 / EN 61000-6-4 compliant)
Contamination & Environment: Conformal coating options for harsh, corrosive, or dusty industrial environments
Operating Instructions
Pre-Installation Verification: Inspect the P-26-74A and P-26-74B circuit boards for physical transport damage, bent header pins, or missing jumper caps before inserting them into the slot.
Electrostatic Discharge (ESD) Protection: Always wear a grounded anti-static wrist strap when handling the board to prevent damage to sensitive IC components.
Installation & Mounting: Ensure the control rack main power supply is switched off. Align the card rails with the rack slots and slide the board firmly into the backplane connector until fully seated.
Wiring & Interconnection: Secure field wiring to the designated terminal blocks according to the system schematic. Ensure shielding on sensor wires is grounded only at the designated single-point earth terminal.
System Power-Up & Calibration: Turn on system power. Verify that the power/status LED turns solid green and execute initial calibration or baseline sensor zeroing using system software or hardware potentiometers as specified.
CPP-128 P-26-74A
Fault Diagnosis
Status LED Unlit:
Check the rack backplane power supply (24 VDC rail).
Inspect internal fuses on the P-26-74A board.
Verify full seating into the backplane edge connector.
Signal Clipping / Invalid Data Readings:
Inspect field wiring connections at the P-26-74B interface module.
Check for ground loops or ungrounded sensor cable shields.
Re-check input sensor bias voltage and cable integrity.
Fault / Alarm Red LED Active:
Run system diagnostics to determine if an internal self-test or memory check failed.
Power down the system, remove the module, and inspect edge connectors for debris or oxidation.
Ensure board jumpers match channel configuration requirements.
Related Models of the Same Series
Shinkawa CPP-126A / P-26-74B (Compatible variant board module)
Shinkawa CPP-111 (Processor / PCB Board)
Shinkawa CPP-91B / P-24-15B-4 (Signal Processing Module)
Shinkawa FRP-208A / P-24-35B (Filter / Reluctance Board Unit)
Shinkawa JBP-316 / P-26-73A-1 / P-26-73B-1 (Junction / Processor Board)
Shinkawa DSP-11C / P-26-5B (Display & Processor Module)
Storage Conditions
Environment: Store in a clean, dry, climate-controlled indoor space free from direct sunlight, moisture, and corrosive gases.
Antistatic Packaging: Keep the board sealed inside its original ESD protective shield bag until ready for immediate installation.
Storage Temperature: Maintain ambient temperature strictly between -20°C and +70°C.
Humidity Control: Keep relative humidity under 85% non-condensing; include silica gel desiccant packs inside the packaging for long-term storage