Provides external rechargeable backup energy for an AC 800M controller when the normal controller supply is unavailable.
- Signal or energy path: The charger connection maintains the battery, and the backup output feeds the controller battery input so the supported controller functions can bridge a power interruption.
- Companion components: Use the approved controller, connection cable, DIN-rail mounting and cabinet power arrangement specified for the installed AC 800M system.
- Engineering check: Check battery condition, polarity, charger supply, cable routing and controller diagnostics during installation and scheduled maintenance.
- System boundary: The battery unit supports controller backup functions but does not substitute for the cabinet's primary controller supply.
Process-control cabinets requiring controller backup support during supply interruptions or maintenance.
Important Notice: Verify the complete SB822 3BSE018172R1 nameplate, installed-system documentation, companion hardware and current ABB instructions before installation or replacement.
Apter Power SB822 3BSE018172R1 Manuals and Guides
Important Notice: The first link is the product-parameters PDF prepared only from the cited manufacturer information; the second link is the Apter Power product manual. Confirm the physical nameplate, current manufacturer documents, and host-system requirements before installation or replacement.
AC 800M memory backup
Maintains the documented controller battery-backup function when normal controller power is interrupted.
PM891 external battery
Provides the external rechargeable-battery option that ABB identifies for PM891 processor units.
Rechargeable backup architecture
Supports AC 800M installations that require a rechargeable external battery instead of relying on a non-rechargeable external or internal battery arrangement.
Industrial control cabinets
DIN-rail mounting supports documented AC 800M cabinets in process and factory control systems, subject to enclosure, ambient, wiring, and controller-compatibility checks.
Read and follow the current ABB documentation and host-equipment instructions before work. Verify the complete physical nameplate and system configuration.
1
Verify the complete SB822 and 3BSE018172R1 nameplate and the target AC 800M processor documentation before installation.
2
Do not confuse the 24 V DC charger connection with the 3.6 V rated battery output.
3
Use only the documented TK821V020 connection cable and the ABB-specified controller connection; do not substitute an unverified cable or polarity.
4
Keep the unit within 0 to +55 °C and install it in an enclosure appropriate for its IP20 protection rating, G2 corrosive-atmosphere classification, and Pollution Degree 2 specification.
5
Before battery service, disconnect the TK821V020 connector and 24 V supply connector, remove the unit from the DIN rail, and use the ESD precautions in the current ABB maintenance procedure.
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