Product Description:

The VT-HNC100-4-30/E-I-00-G04 is a digital axis controller manufactured by Bosch Rexroth Indramat for the VT-HNC Digital Axis Controllers series. Classified as an HNC100 unit, this version coordinates four hydraulic axes and provides local position and force control. It operates without a bus connection, so its control functions do not depend on a higher-level fieldbus. Feedback, command, and drive signals are integrated into one rack module, providing closed-loop motion control for presses, die-casting machines, and plastic injection lines.

Each axis accepts two analog current inputs per axis through a front end with an input resistance of 200 kΩ ±5%, which minimizes the load placed on upstream signal conditioners. The current input converter provides a resolution of 5 µA, allowing the controller to detect small changes in incoming current signals. The voltage digital-to-analog converter produces output increments as fine as 1.25 mV, supporting precise pressure or velocity corrections. Current-mode command lines can drive valves or boosters when the receiving circuit remains below a maximum load of 500 Ω. Keeping the connected load within this limit helps prevent saturation of the onboard amplifiers and maintains the intended loop gain.

The logic layer provides 11 digital I/O points per axis, allowing each controlled axis to exchange status and command signals with connected machine devices. The backplane supports up to 20 digital outputs in total for operating solenoids, relays, and similar loads. Position feedback from incremental encoders is accepted at carrier frequencies up to 250 kHz, permitting high-speed axis tracking without missed counts. An auxiliary supply provides transducers with a stabilized output of 5.25 V ±1% and makes 400 mA available for connected sensors. Each axis also includes two analog voltage inputs and two analog voltage outputs for hydraulic feedback and command signals. These interfaces are contained within a compact cabinet-mounted module that supports multi-axis hydraulic control without requiring separate signal-processing hardware.