Product Description:

The VT-HNC100-1-1X-230 is a digital axis controller from Bosch Rexroth Indramat in the VT-HNC Digital Axis Controllers series. As part of the HNC100 product line, it supervises one hydraulic axis and combines analog and serial feedback to close position and velocity loops in presses, forming equipment, and test rigs. The compact card mounts inside a control cabinet and drives proportional valves directly. This arrangement lets the controller regulate cylinder movement accurately during positioning, force application, and repeatable cycle control.

For supply power, the unit accepts 18 to 36 VDC and dissipates only 8 W, so it can run from standard 24 V utility buses without extra cooling. Command inputs are available as 4 to 20 mA current loops or as ±10 V signals, and the controller reproduces those commands on its outputs up to ±10 V for direct valve drive. The incremental encoder channel counts up to 250 kHz, keeping fast transducers in sync during rapid axis movement. Auxiliary circuits provide a ±10 V ±25 mV reference, an impedance-matched ±10 V measurement path, and dual 4–20 mA outputs. A 16/32-bit MC68376 processor executes regulation code stored in flash, while run-time data are buffered in RAM.

Program space of 1 MB flash EPROM and working space of 256 KB RAM accommodate parameter sets and oscilloscope traces. Continuous operation is permitted from 0 to 50 °C, and the board can be stored from −20 to +70 °C without data loss. Absolute feedback arrives through the SSI port with a width of 28 bits, complementing the incremental channel when magnetostrictive rods are used. The board is supplied as component series 1 and as a version for one hydraulic axis, so its control resources are dedicated to a single closed-loop cylinder. Matching voltage and current spans on the input and output sides simplify wiring and help prevent conversion errors.