Description
ABB SB822 Rechargeable Battery Unit
The ABB SB822 is a high-density ModuleBus Optical Cluster Coupler / Bus Interconnection Module used in the ABB System 800xA and Compact Product 800 automation architecture. It provides reliable optical fiber communication to interconnect distributed S800 I/O clusters over extended distances.
Product Detailed Description
The SB822 module acts as an optical bus expansion adapter for S800 I/O stations. When an I/O system spans multiple control cabinets or wide physical areas, electrical ModuleBus connections become susceptible to electromagnetic noise and signal degradation over long cable runs. The SB822 converts electrical ModuleBus signals into optical signals (and vice versa), enabling high-speed, noise-immune data transfer between local and remote I/O clusters via fiber optic cables.
Technical Specifications
| Parameter | Specification |
| Model / Part Number | SB822 (3BSE018110R1) |
| System Compatibility | ABB System 800xA, Compact Product 800, S800 I/O |
| Module Type | Optical ModuleBus Cluster Coupler / Fiber Expansion |
| Power Supply | Supplied via ModuleBus backplane / Baseplate (24 V DC system power) |
| Power Dissipation | Typical 1.2 W |
| Optical Connectors | Duplex ST connectors (or snap-in optical connectors depending on sub-variant) |
| Fiber Type Supported | Standard Glass Fiber (MM 62.5/125 \mum or 50/125 \mum) / Plastic Optical Fiber (POF) |
| Maximum Transmission Distance | Up to 15m (Plastic Fiber) or up to 1000m+ (Glass Fiber, configuration dependent) |
| Status LEDs | Power, ModuleBus Activity, Optical Link Diagnostics |
| Operating Temperature | 0°C to +55°C |
| Enclosure Protection | IP20 |
Product Advantages
- Extended Transmission Distance: Overcomes the tight physical distance limits of copper ModuleBus cables, connecting distant I/O cabinets up to 1 km away.
- Complete Electrical Isolation: Fiber optic transmission provides total galvanic isolation between I/O clusters, eliminating ground loops and protecting sensitive control hardware.
- High Immunity to Noise (EMC): Optical signals are immune to severe electromagnetic interference (EMI/RFI), making it ideal for environments near high-voltage switchgear or large variable-frequency drives.
- High-Speed Bus Transparency: Operates transparently on the ModuleBus protocol, maintaining deterministic, real-time data communication without introducing noticeable network latency.
- Compact Modular Footprint: Mounts directly onto standard S800 ModuleBus baseplates, saving DIN-rail space and reducing installation complexity.
Important Considerations & Precautions
- Fiber Bending Radius: Adhere strictly to the minimum bend radius specifications of the installed fiber optic cable to prevent signal attenuation or permanent glass core damage.
- Dust Protection: Keep the protective dust caps on the optical transceivers until the moment the fiber cables are connected. Dust contamination on optical lenses is a primary cause of link drops.
- Optical Link Budget: Ensure the total optical attenuation (connectors, splices, fiber length) remains within the receiver sensitivity margin for stable continuous operation.
- Hot-Swapping Rules: While S800 components support modular service, always verify system redundancy and controller communication status before removing or servicing active bus couplers.
Product Applications
- Distributed Power Plants: Interconnecting turbine control racks, boiler house I/O stations, and switchgear rooms across large facilities.
- Oil & Gas Refineries: Linking remote I/O field enclosures in hazardous or high-EMC zones back to the central DCS cabinet.
- Metals & Mining: Transmitting real-time drive and process control signals across long rolling mill or material handling lines.
- Chemical Processing: Isolating control system hardware across different plant units to prevent voltage surges and grounding issues.
Shipping Port: Xiamen, China
Payment: Bank of Chicago, Bank of Singapore
Express cooperation: fedex, DHL, UPS and your express account
Service: Professional Sales provides 24 hours /7 days online service
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