Description
General Information
表格
| Item | Specification |
|---|---|
| Part Number | 086444‑005 (MPRC) |
| Official Designation | PWA, MPRC, WDIRECT FIBER |
| Manufacturer | ABB AccuRay |
| Product Family | MPRC‑HKQCS Paper Machine QCS System |
| Product Type | MPRC Measurement Processor PWA with Direct Fiber Optic Interface |
| Installation | Eurocard‑format plug‑in main measurement processor board, inserts into dedicated MPRC slot of 086345‑004 ASPCBP main control backplane inside MPRC controller rack |
| Power Supply | 5 VDC bus power supplied by rack backplane, no separate external power connector |
| Lifecycle Status | Obsolete / End‑of‑Life. Original OEM manufacturing fully discontinued. Only new‑old‑stock, refurbished and field‑pulled used maintenance spare parts available; no brand‑new factory‑produced units can be ordered. |
| ESD Handling Requirement | High‑precision mixed‑signal processor PCB equipped with FPGA, high‑speed ADC and optical transceiver chips. Anti‑static wrist‑strap and anti‑static workstation must be used during installation, replacement and inspection operations. |
Electrical & Interface Specifications
- Backplane Interface: Gold‑plated multi‑pin edge connector, connects to ASPCBP internal parallel system bus for power supply, address bus, data bus, control strobe signals and system ground reference.
- Optical Interface: On‑board integrated direct fiber optic transceiver port for high‑speed bidirectional data communication between rack‑mount MPRC controller and scanning‑head sensor assembly, eliminates electrical interference over long cabinet‑to‑scan‑head cable runs.
- On‑Board Circuitry: Multi‑channel high‑resolution ADC array, large‑scale FPGA real‑time processing logic, fiber optic physical‑layer transceiver, hardware digital filtering circuits, system fault‑diagnosis logic, memory interface for cooperating SRAM daughter‑boards.
- Main Signal Processing: Receives pre‑processed measurement data from Micro‑101 sensor daughter‑boards, executes core QCS calculation algorithms for paper‑web quality parameters including basis weight, moisture and thickness.
- Power Consumption: Typical 11‑14 W under full‑load operating condition.
- Operation Limitation: Cannot work standalone. Must be deployed within complete MPRC‑HKQCS rack system including ASPCBP backplane, SRAM memory daughter‑boards, sensor signal‑processing boards and rack power supply unit.
- Compatibility Matrix
- Compatible Backplane: 086345‑004 ASPCBP Main Control Backplane
- Cooperates with: 086318‑002 / 086318‑501 SRAM memory daughter‑boards, 086339‑001 / 086339‑501 Micro‑101 sensor processing boards, 086329‑004 ECS board, 086348‑001 ECF board, 086370‑001 ECPSR power board
- Slot Constraint: Must occupy dedicated MPRC processor slot; incorrect slot installation will trigger system boot failure and complete loss of QCS measurement function.
Environmental Specifications
表格
| Item | Value |
|---|---|
| Operating Temperature | ‑20 °C ~ +70 °C, installed inside adequately ventilated industrial control cabinet |
| Storage Temperature | ‑40 °C ~ +85 °C for long‑term spare‑part preservation |
| Relative Humidity | 5 %‑95 % RH, non‑condensing; condensation will cause connector corrosion, optical transceiver degradation and measurement drift risk. |
| Compliance Standard | CE conformity for industrial automation environment |
| Protection Class | IP00 bare printed‑circuit assembly; must be fully enclosed within MPRC rack housing, cannot expose directly to paper‑mill dust, moisture and corrosive vapour. |
| Physical Dimension | Standard eurocard plug‑in form‑factor |
| Net Weight | Approx. 0.40 kg |
| Conformal Coating | Factory‑applied conformal coating for improved anti‑pollution and anti‑corrosion performance under harsh paper‑mill ambient conditions. |
| Vibration Resistance | Complies with general industrial cabinet vibration criteria; severe mechanical shock during transportation and installation shall be avoided to prevent solder‑joint fracture, FPGA damage and optical transceiver internal misalignment. |
Main Functions
- MPRC main measurement processor plug‑in PWA with integrated direct fiber‑optic interface for legacy ABB MPRC‑HKQCS paper‑machine quality‑control system. It undertakes core high‑speed data computation of the whole QCS measurement subsystem.
- Receives conditioned sensor measurement data from Micro‑101 signal‑processing daughter‑boards via backplane bus, executes real‑time mathematical computation to calculate paper‑web quality indexes such as basis weight, moisture content and sheet thickness.
- Equipped with built‑in direct fiber‑optic transceiver, realizes high‑noise‑immunity bidirectional communication between rack‑based MPRC processor and field scanning‑head unit. Fiber‑optic transmission effectively suppresses heavy electromagnetic interference generated by paper‑mill frequency‑conversion and drive equipment.
- Works cooperatively with SRAM memory daughter‑boards to store calibration tables, system configuration parameters, historical measurement logs and fault event records.
- Runs comprehensive hardware self‑diagnosis covering ADC channels, FPGA logic, fiber‑optic link status, backplane bus communication and cooperating daughter‑board health conditions. Reports hardware failure, optical link break, channel over‑range fault and initialization error codes to system HMI for maintenance guidance.
- Typical field failure symptoms
- Complete loss of paper quality measurement data after system power‑on, QCS system offline
- Frequent fiber‑link communication drop‑out, intermittent measurement data loss
- Large‑amplitude jitter and deviation of calculated basis‑weight / moisture readings
- MPRC controller reports MPRC board hardware fault, fiber‑optic link failure alarm
- Common root causes: ageing of on‑board optical transceiver module, FPGA or ADC component degradation, gold‑plated edge‑connector contact oxidation, conformal‑coating damage caused by paper‑mill dust contamination.
- Purely maintenance‑oriented spare‑part component, only for repair and replacement of existing legacy paper‑mill QCS installations; not suitable for new‑project engineering deployment.
Typical Applications
- Spare‑part replacement for MPRC measurement processor board with direct fiber optic interface inside ABB MPRC‑HKQCS QCS control rack.
- On‑site troubleshooting scenarios: total QCS measurement system offline, unstable fiber‑optic communication link, abnormal paper‑quality index calculation, MPRC processor hardware fault alarms.
- Preventive‑maintenance spare‑part inventory preparation for legacy paper‑mill MPRC‑HKQCS control cabinets.
- Hardware refurbishment for decommissioned MPRC‑HKQCS controller assemblies.
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