Product Description:

The VT-HNC100-1-1X-120-1 is a digital axis controller manufactured by Bosch Rexroth Indramat as part of the VT-HNC Digital Axis Controllers series. It is intended for electro-hydraulic automation and supervises motion on a single cylinder by executing position, pressure, and velocity loops locally. When paired with proportional or servo valves, the device serves as an independent drive module that relieves the central PLC while delivering deterministic response in presses, injection-molding machines, or endurance test rigs.

This version is configured for 1 hydraulic axis and carries four current input channels that are terminated through a precision resistor of 100 Ω ±0.2%, enabling direct connection of ±10 mA or 4–20 mA transducers. Each current input is digitized with a resolution of 5 µA, so the controller can sense minute load changes without external amplifiers. Two current outputs drive valve coils, while four voltage inputs and four voltage outputs accommodate feedback sensors or command values. Power draw is limited to 8 W, allowing installation in compact cabinets without active cooling. All control algorithms run on a 16/32-bit MC68376 microcontroller, whose mixed-precision core handles real-time PID loops while a dedicated timing unit synchronizes sampling across analog channels.

The internal encoder interface processes incremental encoder signals up to 250 kHz, maintaining phase integrity during rapid stroke cycles. Program data reside in 1 MB of flash and 8 KB of EEPROM, and motion variables are buffered inside 256 KB of battery-independent RAM for power failure recovery. Reference signals are generated within a tolerance window around ±10 V ±25 mV, which supports compatibility with typical servo-valve electronics. Diagnostics and parameter loading are performed over an RS-232 link that operates at 9.6 kBaud. The component is series 1, and the voltage inputs have 5 mV resolution with an input impedance of 200 kΩ ±2%.