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ABB 3HAC14757-1 is a dsqc 313 serial measurement unit identified in ABB robot spare-part and service documentation. It belongs to a legacy serial measurement configuration used to support robot-axis reference information.
ABB 3HAC14757-1 must remain matched to the documented robot generation, controller architecture, measurement-unit housing, connectors and battery arrangement. The complete ABB article number is required because related SMB boards are not universally interchangeable.
Explains how the serial-measurement unit participates in legacy robot axis referencing.
Matches the installed controller, SMB housing, connector set and documented battery arrangement.
Covers calibration-data protection and the required revolution-counter check after service.
Confirm the complete article number and DSQC 313 marking before disturbing the legacy measurement circuit.
Inspect the original housing, connector keying and battery connection so the replacement follows the documented layout.