Product Description:

The VT-HNC100-1-1X-130 is a digital axis controller produced by Bosch Rexroth Indramat for the VT-HNC Digital Axis Controllers series. It forms the motion control layer between a PLC and a machine’s proportional hydraulic system by calculating setpoint curves, closing position loops, and driving valves directly. Installed in a control cabinet, it governs a single hydraulic cylinder or motor with deterministic, NC-style command execution. Its role is centered on precise hydraulic motion control rather than direct power conversion for an electric drive axis.

This unit controls 1 hydraulic axis, dedicating its processing capacity to one motion channel and the associated sensors. Computation is handled by a 16/32-bit MC68376 processor that boots from 1 MB of flash memory, while nonvolatile parameter blocks occupy an additional 8 KB of EEPROM. The electronics dissipate only 8 W, which helps reduce heat buildup inside the panel. Component Series 1 hardware provides four voltage inputs and four current inputs, with the voltage channels presenting 200 kΩ ±2% impedance and the current channels using 100 Ω ±0.2% shunts; the controller also includes an encoder supply rated at 200 mA, four voltage outputs for valve actuation, and four logic-level switching lines.

In operation, the controller uses 256 KB of battery-buffered RAM to retain axis positions, PID terms, and error logs during controlled shutdowns. Valve commands are generated with an analog granularity of 1.25 mV, and feedback on the current inputs is digitized in 5 µA increments, while voltage inputs are processed in 5 mV steps. The incremental encoder channel accepts edge rates up to 250 kHz, which supports high-line-count transducers used for fine position feedback. Each of the four transistor switching outputs can source or sink up to 50 mA, making them suitable for pilot relays and status lamps.