Description
Product Specifications
- Origin: Sweden / Estonia
- Weight: 0.44 lbs (0.20 kg)
- Dimensions: 3.35 x 1.77 x 1.18 inches (85 x 45 x 30 mm)
- Nominal Voltage: 3.6 V
- Capacity: 1.0 Ah (typical)
- Chemistry: Lithium Thionyl Chloride (non-rechargeable)
- Compatibility: Compatible with PM851 through PM866 high-performance CPUs.
- Part Number: 3BSE018172R1
The ABB SB822 is a specialized battery backup unit designed for the AC 800M controller family. Its primary function is to provide emergency power to the processor’s volatile RAM (Random Access Memory), ensuring that the application program, configuration data, and system variables are preserved during a total power failure. Unlike standard batteries, the SB822 is engineered for long-term industrial reliability, featuring a high energy density and low self-discharge rate. It is an essential component for preventing data loss and reducing system downtime by eliminating the need for a full application download after an unplanned power cycle.
ABB SB822 3BSE018172R1
ABB SB822 3BSE018172R1
ABB SB822 3BSE018172R1
Model Comparison: SB822 vs. Similar Models
The SB822 (3BSE018172R1) is the standard high-capacity battery unit, offering significantly more uptime than the smaller SB821 battery. While the SB821 is often used for shorter-duration backup or in systems with frequent power monitoring, the SB822 is the preferred choice for mission-critical installations where the controller might remain unpowered for extended periods. Compared to earlier SB810 series units used in legacy Advant systems, the SB822 features a more robust connector interface specifically keyed for the PM86x series processor housing, ensuring a vibration-resistant connection in demanding environments.
Operational Guidelines
- Replacement Interval: Replace the battery every 2 to 3 years regardless of the status LED, as lithium thionyl chloride batteries can experience “voltage delay” or sudden failure toward the end of their service life.
- Hot-Swap Procedure: The SB822 can be replaced while the controller is powered (“Hot-swapped”). Always replace the battery while the 24V DC supply is active to ensure the RAM contents remain protected by the primary power source during the swap.
- Status Monitoring: Monitor the “BATT” LED on the front of the PM86x CPU. A solid red light indicates that the battery voltage has dropped below the critical threshold (typically 3.1V), and the unit should be replaced within 24 hours.
- Storage Conditions: Store spare SB822 units in a cool, dry place. Avoid temperatures above 30°C (86°F), as high heat significantly accelerates the chemical degradation and reduces the shelf life of the lithium cell.
- Environmental Disposal: Because this unit contains lithium thionyl chloride, it must be disposed of as hazardous waste according to local environmental regulations; never incinerate or puncture the battery casing.
