Product Description:

The VT-UK2-3X/ES-E61-A204/U213 is a plug-in signal conditioning card produced by Bosch Rexroth Indramat for the VT-UK2 Universal Cards series. As a general-purpose electronic module, the card installs in hydraulic drive racks to scale, combine, and shape analog command signals before they reach servo or proportional valve amplifiers. By providing onboard op-amps, potentiometers, and switching functions, it lets the control system adapt reference voltages and feedback loops without a custom printed circuit board. This arrangement is useful where valve command levels and feedback signals must be matched to the surrounding control electronics.

The board follows the Eurocard mechanical format, and its profile of 100 x 160 mm fits standard 3U subracks. I/O enters through connectors that comply with the DIN 41 612 backplane standard, so it can slide into common industrial card cages. A regulated 10 V reference line can supply sensors or serve as a summing point, while 6 operational amplifiers perform gain, inversion, or differentiation. Fine adjustments are made with 5 null point potentiometers, allowing precise centering of valve spool positions or zeroing of transducers without external instruments. The card also hosts inverting, Schmitt-trigger, summing, and differentiator stages that can be wired through solder bridges for custom logic.

Electrical interfacing is flexible because the rear connector can be populated with 32 or 64 pins to match available rack wiring. The onboard power regulators accept either 15 VDC or +24 VDC, allowing use in low-voltage logic enclosures as well as higher-power hydraulic cabinets. For downstream devices, the card sources a buffered 10 V, 5 mA output, which is adequate for most command or feedback lines without overloading the reference rail. A relay terminal pulls in between +17 and +28 V to enable or disable signal paths, allowing simple safety or mode-select circuits with minimal additional hardware. This makes the card suitable for mixed cabinet layouts where signal conditioning and relay control are handled in the same rack.