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Phone: +86 16626708626Description
2. Product Core Brief
- Model: 086345-504
- Brand: ABB
- Series: SP700 / ASPC (legacy ABB PLC family)
- Core Function: Provides backplane interconnection, power busing, and slot mounting for SP700 controller modules
- Product Type: Backplane / Rack / Chassis Board
- Key Specs: Multi-slot design for SP700/ASPC cards, supports module insertion and bus communication, typical weight ~3 lbs
- Condition: New Surplus / New Original (obsolete part, limited spares available)
3. Key Technical Specifications
- Part Type: Backplane / PLC Rack Board
- Compatibility: ABB SP700 series controllers and associated modules (e.g., CPU, I/O, comms cards)
- Mounting: Cabinet or panel installation; slots for plug-in modules
- Bus/Interconnect: Internal ABB proprietary backplane bus for power and data between inserted cards
- Power Distribution: Routes input power (typically 24 VDC or system-specific) to modules
- Weight: Approximately 3 lbs (1.36 kg) – 3.18 kg in some listings
- Dimensions: Standard SP700 rack footprint (exact varies; consult legacy drawings)
- Operating Temperature: 0 to 55 °C (typical legacy ABB rating)
- LED Indicators: None native (module-dependent status via inserted cards)
- Status: Obsolete by manufacturer – spares only
4. Product Introduction
The ABB 086345-504 is a backplane board for the SP700 (ASPC) legacy PLC system. It forms the structural and electrical foundation in the rack, accepting plug-in modules for CPU, I/O, power, and communications while distributing power and enabling inter-module data exchange via the proprietary bus.
This backplane supports compact, modular setups in older industrial controls—common in process, turbine, or machine applications where ABB SP700 was deployed. Legacy maintainers use it for direct replacements in existing cabinets, preserving module compatibility and avoiding full system retrofits to modern platforms like AC500 or 800xA.
- 086345-504
5. Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| No power to inserted modules | Backplane power traces open or input missing | ✅ High | Measure input voltage at rack terminals; check continuity across slots | Verify external PSU; inspect for burnt traces or corrosion |
| Modules won’t seat or communicate | Dirty/worn connectors or bent pins | ✅ High | Visual inspection of backplane slots; continuity test pin-to-pin | Clean contacts with isopropyl; straighten pins carefully |
| Intermittent bus faults across cards | Loose backplane mounting or vibration damage | ✅ High | Reseat all modules; torque mounting screws | Secure rack firmly; check for mechanical stress |
| Individual slot dead | Localized trace break or short | ✅ High | Swap known good module to slot; test voltage at pins | Isolate to backplane fault; replace unit |
| Overheating in rack | Poor airflow or high current draw | ❌ Low | Monitor rack temp; feel backplane for hot spots | Improve ventilation; check total load |
| No module LEDs despite power | Backplane logic/power distribution fail | ✅ Medium | Measure +5 V / logic rails at slot test points | Confirm with multimeter; PSU or backplane issue |
SP700 backplanes seldom fail catastrophically—issues usually stem from age (corrosion, connector wear), poor mounting, or external power problems. Inspect visually first, then use multimeter on power pins per slot. Photos of rack interior and voltage readings help diagnose; send if modules act strange.
6. Frequently Asked Questions (FAQ)
What system does the 086345-504 belong to? It’s the backplane for ABB’s legacy SP700 (ASPC) PLC series—older industrial controllers from the ASEA/ABB era, often in process or turbine applications. Not compatible with modern AC500 or 800xA without adapters.
Is the 086345-504 still manufactured new by ABB? No, SP700 series is long obsolete. We stock new surplus—unused, factory-sealed or new-old-stock from decommissioned spares. They match original interconnect and power routing but lack active ABB support.
How many slots does this backplane have? Exact slot count varies by SP700/ASPC configuration (typically 4–10+ depending on rack size), but listings describe it as a standard PLC rack backplane for module insertion. Verify against your existing cabinet drawings.
Can I swap this backplane without downtime? No—requires full power-down, module removal, and reinstallation. Plan for outage; back up programs first. Modules plug directly into new backplane if pinout matches—no reconfiguration needed.
Will modules retain configs after backplane swap? Yes—configuration and programs live in the modules (e.g., CPU card memory). Swap preserves everything if no power glitches during transfer. Always verify after reinstall.
Why surplus over refurbished backplanes? Surplus means no prior installation wear—no bent pins, no corrosion from field environment, no trace fatigue. Refurbs often from pulled racks with unknown history. We inspect every 086345-504: visual check for damage, continuity test on key power/bus pins, clean connectors, and package ESD-safe.
What warranty do you offer? 1-year functional when installed per legacy specs. Covers manufacturing defects, not connector wear, physical damage, or improper handling. Test reports with photos of board condition and basic continuity checks available on request.
