Description
General Information
表格
| Item | Specification |
|---|---|
| Part Number | 086370‑001 |
| Official Designation | PWA, ECPSR, R.O. +15V,‑15V |
| Manufacturer | ABB AccuRay |
| Product Family | MPRC‑HKQCS Paper Machine QCS System |
| Product Type | End‑Column Power Supply Regulator Plug‑in PWA Board |
| Installation | Eurocard‑style plug‑in board, inserts into dedicated slot on 086345‑004 ASPCBP main control backplane inside MPRC controller rack |
| Input Power | Powered from rack internal bus supply, accepts unregulated DC input from rack power unit |
| Regulated Output | Isolated stabilized ±15 VDC for end‑column sensor and signal conditioning circuitry |
| 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‑built units can be ordered. |
| ESD Handling Requirement | High‑precision power conversion PCB with sensitive analog components. Anti‑static wrist‑strap and anti‑static workstation shall be used during installation, replacement and inspection operations. |
Electrical & Interface Specifications
- Backplane Interface: Gold‑plated multi‑pin edge connector, receives raw DC input from ASPCBP backplane, reports power‑module fault status to MPRC system bus.
- Power Output Interface: On‑board internal distribution circuits deliver regulated +15 V and ‑15 V to ECS / ECF daughter‑boards for sensor signal conditioning circuits.
- On‑Board Circuitry: Isolated DC‑DC converter module, output voltage feedback loop, over‑voltage, under‑voltage, over‑current protection circuits, fault detection & status reporting logic, input EMI filter network.
- Output Performance: Tight voltage regulation ±0.5 % across full load range; provides clean low‑noise bipolar supply for micro‑volt level analog sensor channels.
- Typical Power Consumption: 8‑11 W under full‑load operating condition.
- Operation Limitation: Cannot operate standalone. Must be installed in complete MPRC‑HKQCS rack assembly with main CPU, 086345‑004 backplane and cooperating ECS / ECF signal boards.
- Compatibility Matrix
- Compatible Backplane: 086345‑004 ASPCBP Main Control Backplane
- Cooperates with: 086329‑004 ECS board, 086348‑001 ECF board, 086318‑002 / 086318‑501 SRAM memory daughter‑boards
- Slot Constraint: Must occupy dedicated ECPSR slot position; mis‑slot installation triggers power initialization failure and end‑column sensor channel offline alarms.
Environmental Specifications
表格
| Item | Value |
|---|---|
| Operating Temperature | ‑20 °C ~ +70 °C, installed inside properly 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 component corrosion and power‑rail 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. 0.48 kg |
| Conformal Coating | Factory‑applied conformal coating for improved anti‑pollution 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 and internal converter module damage. |
Main Functions
- ECPSR end‑column regulated power‑supply plug‑in board for legacy ABB MPRC‑HKQCS paper‑machine quality‑control system. It generates stabilized bipolar +15 V / ‑15 V isolated power rails dedicated for end‑column sensor signal‑processing hardware.
- Takes unregulated DC power from rack backplane bus, performs DC‑DC isolation conversion and precise voltage regulation, supplies clean low‑noise ±15 VDC operating power to 086329‑004 ECS and 086348‑001 ECF daughter‑boards. Stable bipolar power is critical for low‑level analog position‑signal measurement accuracy.
- Integrates comprehensive hardware protection mechanisms including over‑voltage, under‑voltage and over‑current shutdown protection. When output fault occurs, the board locks output and sends fault diagnostic signal to MPRC main CPU via system bus.
- Executes continuous self‑diagnosis of input and output power status. Reports power‑rail abnormality, converter failure and protection‑trigger events to system HMI with corresponding fault codes for maintenance guidance.
- Typical field failure symptoms
- End‑column sensor channels completely offline, ECS / ECF boards cannot initialize after power‑on
- Severe analog measurement drift and noisy position readings caused by unstable ±15 V power rails
- MPRC controller reports ECPSR power‑supply fault alarm
- Intermittent channel drop‑out triggered by cabinet vibration
- Common root causes: ageing of on‑board DC‑DC converter module, output electrolytic capacitor degradation, gold‑plated edge‑connector contact oxidation, conformal‑coating damage due to 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 ECPSR end‑column regulated power‑supply board inside ABB MPRC‑HKQCS QCS control rack.
- On‑site troubleshooting scenarios: end‑column sensor board power‑on failure, abnormal analog position signal drift, ECPSR power‑supply 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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