Product Description:

The VT-HNC100-1-14 digital axis controller is manufactured by Bosch Rexroth Indramat within the VT-HNC Digital Axis Controllers series. Designed as the control core for a single hydraulic axis, the unit closes position, velocity, and pressure loops in presses, molding machines, and test rigs. It interfaces with proportional or servo valves and translates CNC-style motion commands into precise hydraulic flow adjustments for controlled machine motion. This arrangement lets the controller correct hydraulic movement continuously as load pressure and actuator speed change during the machine cycle.

The controller runs from an input range of 18 to 36 VDC and draws only 8 W, allowing direct cabinet integration without a large power supply. A 16/32-bit MC68376 microcontroller executes the closed-loop algorithms, and a memory map of Flash 1 MB; EEPROM 8 KB; RAM 256 KB stores parameters and real-time variables. Quadrature, SSI, or incremental position devices can be connected for axis feedback, so the unit can support both relative and absolute measurement methods. The capture hardware supports edge rates up to 250 kHz, helping high-resolution encoders maintain signal fidelity during rapid axis movements.

Signal interfacing includes four voltage inputs, four impedance inputs, four current inputs, and four voltage outputs, so the unit can read pressure or displacement transducers and send analog command values to connected devices. That combination supports synchronized sensing and command output without requiring separate analog interface modules. The serial service port communicates at 9.6 KBaud, and the internal sensor supply provides UB or +5 VDC at 200 mA for transducer excitation. During operation, the controller maintains full accuracy across an ambient band of 0 to 50 °C, and for absolute feedback, the SSI interface transfers words up to 28 bit when paired with compatible encoders.