Description
Key Technical Specifications
- Model Number: SB822
- ABB Article Number: 3BSE018172R1
- Product Type: External rechargeable battery unit
- Main Application: Backup power for ABB AC 800M controllers
- Battery Type: Rechargeable lithium-ion battery
- Rated Output Voltage: 3.6 V
- Maximum Output Current: 0.05 A
- Mounting Method: DIN rail mounting
- Connector: 24 V DC connector with TK821V020 connection cable
- Protection Rating: IP20 according to IEC 60529
- Operating Temperature: 0 to +55 °C
- Dimensions: 85.8 mm W × 58.5 mm D × 136 mm H
- Weight: Approx. 550 g
Product Introduction
ABB SB822 (3BSE018172R1) is a rechargeable battery unit designed for ABB AC 800M controllers and System 800xA automation systems. It provides backup power to maintain controller memory data during external 24 V DC power interruptions.
The unit mounts on a DIN rail and integrates with ABB controller cabinets using the TK821V020 cable connection. Before replacement, verify battery condition, connector type, and controller compatibility against the installed ABB system documentation.
Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| AC800M loses memory after power failure | SB822 battery depleted | ✅ High | Check controller diagnostics and battery status indication | Replace SB822 if backup voltage is below specification |
| Controller restarts after 24 V DC interruption | Battery backup not maintaining supply | ✅ High | Measure battery output and inspect connector cable TK821V020 | Verify cable connection and replace aging battery unit |
| No battery backup function | Loose connection or incorrect wiring | ✅ High | Inspect SB822 connector and cable routing | Confirm correct cable installation before replacement |
| Controller operates normally but battery alarm appears | Battery nearing service life | ⚠️ Medium | Review AC800M diagnostic messages | Schedule replacement during planned maintenance |
| New SB822 installed but fault remains | Controller configuration or external power issue | ⚠️ Medium | Check 24 V DC supply stability and controller logs | Diagnose upstream power system before replacing again |
| Physical damage or leakage signs | Battery failure/storage issue | ⚠️ Medium | Visual inspection of housing and terminals | Remove from service and replace unit |
❗ Technical support note: If the fault remains unclear, provide photos of the label, cabinet wiring, AC800M diagnostics, and power measurements before replacement.
Frequently Asked Questions (FAQ)
Q: What does ABB do in an AC800M system?
A: is an external rechargeable battery unit used to provide backup power for ABB AC 800M controllers. Its purpose is to maintain controller memory data during power interruptions.
Q: Is ABB a normal 24 V DC power supply?
A: No. is not a main DC power supply. It is a backup battery unit with a 3.6 V rated output designed for controller backup functions.
Q: Can I replace directly without configuration?
A: In most installations, the battery unit itself does not require programming. However, verify the controller diagnostics after installation and confirm the backup function is restored.
Q: How do I avoid installing the wrong ABB replacement?
A: Check the full part number: 3BSE018172R1. Also verify the existing cable, cabinet layout, and AC800M controller model before ordering.
Q: Why is an industrial surplus cheaper than buying from ABB directly?
A: Many automation spare parts come from unused project inventory, maintenance stock, or discontinued equipment storage. Confirm serial traceability, testing records, and storage condition before purchase.
Q: How long does the battery typically last?
A: Battery life depends on operating conditions, temperature, and discharge cycles. Check the controller diagnostics and maintenance schedule rather than replacing only by calendar age.
Q: Is hot-swappable?
A: Do not assume hot swapping is allowed. Follow ABB installation procedures and isolate power before removing or replacing the unit to avoid controller memory loss or equipment damage.
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