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ABB 07KR51 is an AC31 Series 50 basic unit with eight 24 V DC digital inputs, six relay outputs and an integrated CS31 bus interface for distributed I/O. The 1SBP260010R1001 version uses a 24 V DC supply and supports local expansion through up to six connected I/O units. Serial communication, real-time clock and retained controller programming must match the installed application.
Selection must match order 1SBP260010R1001, the 24 V DC supply and the installed controller program.
Important Notice: Confirm the complete model, revision and installed system before replacement.
The 1SBP260010R1001 version provides eight 24 V DC digital inputs and six relay outputs. Field voltage, common wiring and relay load must be checked before transfer.
The integrated CS31 bus supports distributed I/O, while the local extension interface accepts up to six compatible digital or analog extension units.
Verify supply polarity, I/O commons, relay loads, serial settings, CS31 addresses and the restored program before returning the controller to automatic operation.
Engineering check: Confirm 07KR51 receives a stable 24 V DC supply. Prove all 8 Inputs input circuits and verify each of the 6 relay outputs outputs is connected to a load within the documented Up to 250 V AC, 2 A rating.
Acceptance test: Restore the approved AC31 application within the documented program-memory capacity, check I/O addressing and retained data, then perform a controlled cold start and verify scan execution, relay states and fault diagnostics.
Moore Automated supplies high-quality ABB 07KR51 replacement controllers and AC31 spare modules. The exact order number, power version, I/O wiring and program are checked before supply to reduce commissioning risk and production downtime.