Application Scenarios
Picture this: It’s the middle of a night shift at a chemical processing plant, and a momentary power sag hits the facility. When the mains supply is restored, a critical AC 800M controller restarts, but instead of resuming normal operation, it displays a dreaded “Memory Lost” error, and the system clock has reverted to a date from years past . The entire production line is down, and engineers scramble to reload the program and re-synchronize the system, costing hours of lost production. This scenario is a classic symptom of a failing or depleted ABB 3BSC760019E1 backup battery. For process automation engineers, the ABB 3BSC760019E1 is the silent guardian that prevents these incidents. Its primary mission is to provide the vital 3.7V DC power required to preserve the CPU’s volatile RAM (Random Access Memory) and maintain the Real-Time Clock (RTC) when the main system power is interrupted . By reliably performing this function, the ABB 3BSC760019E1 ensures a seamless, data-safe restart, transforming a potential crisis into an unnoticed blip.
Parameters
| Main Parameters | Value/Description |
|---|---|
| Product Model | 3BSC760019E1 (ABB Type Designation: SB822) |
| Manufacturer | ABB (Part of Hitachi Energy) |
| Product Category | Rechargeable Battery / Control System Accessory |
| Battery Chemistry | Lithium-Ion (Li-ion) |
| Nominal Voltage | 3.7 V DC |
| Nominal Capacity | 2.4 Ah (2400 mAh) |
| Dimensions (Typical) | Approx. 34 x 47.8 x 8.3 mm |
| Net Weight | Approx. 0.05 kg |
| Operating Temperature | -20 °C to +60 °C |
| Cycle Life | ≥ 500 cycles (up to 1000 cycles typical) |
| Certification | CE, RoHS, UL (varies by batch) |
| Compatible Systems | ABB AC 800M (e.g., PM851, PM861, PM864, PM865) using SB822 unit |
Technical Principles and Innovative Values
Innovation Point 1: Engineered for Industrial Data Integrity
The primary innovation of the ABB 3BSC760019E1 is its specific engineering for the demanding environment of industrial control. It is not a general-purpose battery; it is a precisely specified component that serves a critical function. Its steady 3.7V output and 2.4Ah capacity are perfectly matched to the power requirements of the AC 800M CPU’s RAM and RTC, ensuring reliable data preservation for extended periods—typically days to weeks—during power loss . This focus ensures the seamless restoration of operations without data corruption or the need for time-consuming program reloads.
Innovation Point 2: Robust Li-ion Chemistry with Floating Charge Capability
The module utilizes rechargeable lithium-ion technology, which offers a superior energy-to-weight ratio and has a lower self-discharge rate than older chemistries like NiMH or NiCd . In its intended use within the SB822 unit, the 3BSC760019E1 is maintained in a “floating” state by the system’s primary power supply, always ready to deliver its full capacity when needed. This design ensures the backup power is consistently available and at peak performance, maximizing the effectiveness of the DCS’s emergency power scheme.
Innovation Point 3: Defined Lifecycle for Predictive Maintenance
Understanding the lifecycle of the ABB 3BSC760019E1 is key to industrial reliability. With a specified cycle life of 500 to 1000 charge/discharge cycles, engineers can plan for a proactive 3-5 year replacement schedule during major plant outages . This predictability prevents the scenario of a “Memory Lost” failure due to an expired battery. The battery’s parameters—requiring charging once per year to 40% capacity (3.75V) for storage and warnings against discharging below 2.0V—provide clear guidelines for maintenance teams to ensure longevity and reliability .