ABB NINT-68 61426650C/61426850D/61426850B Main Circuit Interface / Inverter Control Board

FAQ

Q1: What is ABB NINT-68?
A: It is an ABB inverter/main-circuit interface board used inside industrial frequency converters and drive systems.

Q2: What are the part numbers associated with NINT-68?
A: The numbers provided are 61426650C, 61426850D and 61426850B. 61426850B is directly documented with NINT-68/NINT-68C.

Q3: What is the main function of NINT-68?
A: It provides main-circuit interfacing, inverter control and power-stage signal processing within the ABB drive.

Q4: Is NINT-68 a PLC module?
A: No. It is an internal ABB drive/inverter PCB, rather than a PLC CPU or standard digital/analog I/O module.

Q5: Which ABB drives can use NINT-68?
A: Available references associate the NINT-68 family with ABB ACS600 MultiDrive and ACS800-series frequency converters. Exact compatibility depends on the drive type code and board revision.

Q6: Are 61426650C, 61426850D and 61426850B interchangeable?
A: They appear to belong to the NINT-68 family, but they should not be assumed directly interchangeable. The revision letter and complete ABB drive configuration should be checked before replacement.

Q7: What are the dimensions and weight?
A: A practical reference is approximately 229 × 76 × 30 mm. Supplier data gives approximately 2 kg gross weight for the NINT-68/NINT-68C assembly.

Q8: What is NINT-68 used for?
A: It is used for inverter power control and signal processing in ABB variable-frequency drive systems, helping interface the control circuitry with the drive’s power stage.