Product Description:

The VT-UK2-3X/VT11980A/U257 is an electronic universal card built by Bosch Rexroth Indramat for the VT-UK2 Universal Cards series. Within a hydraulic or motion-control rack, this Euroformat board supplies reference and conditioning functions, allowing adjacent servo or proportional valve modules to be tuned without external hardware. By integrating adjustable null settings and amplification stages on a single plug-in card, it simplifies loop adjustment and preserves cabinet space in industrial automation systems.

The card is sized at 100 × 160 mm, matching the Eurocard outline, and it follows the DIN 41 494 mechanical standard for straightforward mounting in 19-inch subracks. Its connectors comply with DIN 41 612, ensuring interchangeability with backplanes that share this pin assignment. The Eurocard format allows uniform handling in test fixtures and service kits, while the specified ambient range of 0 to +50 °C keeps the circuitry within normal component tolerances during panel operation. When energized, the board accepts a single-ended control supply of 10 V, which is routed internally to precision stages that create stable reference levels for downstream drive electronics.

A rear-edge blade connector carries both the supply rail and signal lines, so installation requires no additional wiring at the card front. Six integrated instrumentation stages, identified as 6 operational amplifiers, furnish differential gain, filtering, and summing functions, while five null-point potentiometers permit individual offset trimming without disturbing adjacent channels. The conditioned output is delivered as a regulated 10 V, 5 mA signal capable of driving standard proportional valve inputs or analog PLC channels. The removable card layout reduces field wiring and allows the analog stages to be accessed without front-end rewiring when control loops require recalibration.