Product Description:

The VT-UK2-3X/VT4751/U142 is a plug-in electronic card manufactured by Bosch Rexroth Indramat for the VT-UK2 Universal Cards series. It functions as a universal signal-conditioning and relay interface inside modular industrial controllers, routing low-level transducer outputs to higher-power actuators while maintaining isolation within a standardized rack. Six on-board operational amplifiers shape, buffer, or invert analog inputs so field devices can be matched to drive electronics without external wiring changes. This architecture reduces cabinet space and allows rapid exchange whenever a process variant demands a different card configuration.

For mechanical integration, the board follows the Eurocard standard and keeps its footprint at 100 x 160 mm. Connection to the backplane is accomplished through a Blade, DIN 41 612 header that can be ordered in 32 or 64 pin versions, and the mating hardware may be oriented as form C or D depending on rack layout. A precision reference of 10 V is available at the input stage so the amplifiers can perform gain or offset tasks with repeatable calibration. The six amplifiers accept up to the same 10-volt level and together supply a single-ended output of 10 V at 5 mA suited for proportional valve electronics or analog controller channels.

Power for the card’s active stages is taken from a dual supply of 15 VDC or +24 VDC, giving flexibility in cabinets that may share rails with other Rexroth logic or with field PLC modules. The on-board relay section will only energize when the call-up line provides between +17 to +28 V, preventing inadvertent switching during brownouts. Designed for typical machine rooms, the circuitry remains functional within an ambient corridor of 0 to +50 C, and it can be warehoused or shipped safely between -20 to +70 C without performance degradation.