Product Description:

The VT-UK2-3X/VT4749/U38 is a printed-circuit card from Bosch Rexroth Indramat, supplied within the VT-UK2 Universal Cards series. Mounted in a standardized 32-pin Eurocard slot, it serves as a configurable analog backbone inside hydraulic or motion-control racks. The board adapts sensor returns and command references, performing low-level arithmetic and signal conditioning so proportional valves, servo drives, and closed-loop regulators receive signals that stay within acceptable voltage or current ranges during industrial automation tasks. Because it operates as a universal interface card, it can sit between transducers and control hardware where raw feedback or command signals need scaling before use.

The card has 6 amplifier channels, each able to deliver independent gain or attenuation. These channels use 3 double operational amplifiers, giving six op-amp stages for buffering, filtering, or differential conversion. To bring every axis cleanly through zero, the card provides 5 null point potentiometers that allow offset voltages to be trimmed directly on the front edge. A built-in Schmitt trigger converts analog thresholds to crisp logic transitions, and the selectable differentiator function outputs a rate component useful for derivative damping in servo loops. The available analog stages let one board handle several conditioning tasks without requiring separate external modules for each function.

A selectable inverter function flips polarity whenever an actuator requires opposite drive. The same section supports phase reversal without rewiring external leads. For vector addition, the arithmetic core offers a summator function that combines two or more conditioned inputs before forwarding them to downstream amplifiers. Mechanical reliability is reinforced by soldered junctions throughout the circuit, which helps maintain consistent contact resistance under vibration or temperature cycling. This arrangement allows polarity changes and signal combining to be handled on the card, reducing the need for external signal-conditioning hardware elsewhere in the rack.