ABB 3BHB002953R0117 – SCA-2 Signal Adapter with RS-485 & Modbus RTU

The ABB 3BHB002953R0117 is a specialized SCA (Scaling and Conditioning Adapter) board from ABB‘s SCA-2 product family, engineered to perform precision analog signal scaling and conditioning within industrial drive and control systems. Commercially designated as the XV C723 AE17 and catalogued under “CURRENT MEAS.SCAL,” this board serves a critical function in the signal chain between field transducers and the main control processor . The ABB 3BHB002953R0117 ensures that analog signals—whether from current transformers, speed sensors, or pressure transmitters—are accurately scaled, linearized, and filtered before being delivered to the drive’s control electronics. Without this conditioning step, control loops would experience signal drift, noise interference, and scaling errors that could destabilize motor control or trigger false protective trips.

The ABB 3BHB002953R0117 is deployed across multiple ABB platforms, most notably as a spare part for ACS1000 medium-voltage drives and ACS600/ACS800 large drive systems . It also finds application in AC800M DCS expansion racks and HVDC valve control systems . The board’s design emphasizes both precision and isolation, featuring opto-isolation and EMC protection that maintain signal integrity even in electrically noisy environments such as rectifier cabinets and variable frequency drive installations . With a scaling accuracy of approximately ±0.1%, the ABB 3BHB002953R0117 delivers the signal fidelity required for stable PID control and accurate current measurement in demanding industrial processes .