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Phone: +86 16626708626Description
Product Core Brief
- Model: 086318-002
- Brand: ABB
- Series: Industrial Control Systems
- Core Function: Memory expansion daughterboard
- Product Type: PWA memory PCA
- Key Specs: Surface mount memory, 0.2 kg weight
- Condition: New Surplus
Key Technical Specifications
- Type: Printed wiring assembly (PWA) memory daughterboard
- Weight: 0.2 kg (0.44 lbs)
- Customs tariff: 85340019 (printed circuits)
- Category: CPU/control board accessory
- Construction: Surface mount components
- Power: Backplane powered, low draw
- Operating temperature: 0°C to 55°C typica
- Dimensions: Compact daughter card form factor
- Compatibility: ABB legacy control systems
- Invoice description: MEM DAUGHTER PCA
- 086318-002
Product Introduction
ABB 086318-002 is a PWA memory daughterboard that mounts on main CPU or control boards in ABB industrial automation systems. Expands volatile and non-volatile memory for larger programs and data retention during power loss.
Plugs into edge connector on host board, adds SRAM/EEPROM capacity for DCS or PLC applications. Field service swaps fix “memory full” faults without full CPU replacement. Weighs 0.2 kg; ESD sensitive—needs anti-static handling. Verify host board pinout before install.
Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| No memory retain after cycle | Battery dead or socket corrosion | ✅ High | Measure 3.3 V on Vbat pin; reseat 3x | Clean gold fingers with IPA; replace CR2032 if fitted |
| Boot loop on host CPU | Address conflict or bad EPROM | ✅ High | POST codes halt at mem test; beep pattern | Flashcheck EPROM ID via programmer; swap test board |
| Data corruption random | Cosmic ray bit flip or heat >70°C | ✅ Medium | ECC errors in logs; temp probe >60°C | Add heatsink if stacked; run ECC if supported |
| Host won’t detect expansion | Pin 1-2 bent or oxide on contacts | ✅ High | Continuity edge connector <0.5 Ω pin-pin | Microscope inspect; Deoxit D5 on fingers only |
| High power draw >500 mW | Short on SRAM array or leaky cap | ❌ Low | Clamp probe on +5 V pins >100 mA | Continuity test unpowered; replace host if pulls |
Log boot sequence and photo socket before swap. Daughterboards fail from ESD 80%—handle by edges. Send host model to support.
Frequently Asked Questions (FAQ)
Fits which ABB main boards?
086318-002 mates with legacy ABB DCS/PLC CPUs—check silkscreen for 0863xx series. Exact host PN on sticker required.
Volatile or non-volatile memory?
Mix SRAM (battery RAM) + Flash/EEPROM. Retains 6 months typical on lithium cell. Program reloads from host if lost.
Hot-swap possible?
No—power off host first. Live insert shorts backplane. Ground strap mandatory; 1 kV ESD protection.
Weight and shipping specs?
0.2 kg gross; customs 85340019. Ships ESD bagged with foam. Fits small envelope—no hazmat.
❗ ESD killer mistake?
❗ Bare fingers on gold edge—static fries SRAM instantly. Seen techs carpet-walk and smoke three boards. Wrist strap or bust.
Condition and test method?
New Surplus: OEM overrun, full read/write cycle on all banks + battery hold test. No bit errors; socket continuity perfect. Reports ready.
Warranty, dispatch time?
1-year DOA. Stock levels good, ships post ESD burn-in. Same day if ordered by 2 PM.
