Product Description:

Bosch Rexroth Indramat manufactures the VT-HNC100-1-1X-110-7 digital axis controller as part of the VT-HNC Digital Axis Controllers series. This module provides closed-loop numeric control for hydraulic machinery by translating position commands into valve currents and monitoring feedback from transducers. It is intended for systems that need precise motion on a single hydraulic actuator and serves as the central element that coordinates displacement, pressure, and flow within industrial automation cells.

The controller is supplied for 1 hydraulic axis, so its I/O allocation and control algorithms are optimized for single-axis positioning tasks. An input supply of 18 to 36 VDC powers the logic, sensor interfaces, and valve drivers, and the controller draws up to 8 W. Core computations run on a 16/32-bit MC68376 microcontroller that manages real-time control loops and communication over the RS232 service port, which operates at 9.6 kbaud. Program variables and buffering are handled by 256 KB of RAM, allowing deterministic execution of interpolation, ramp generation, and error monitoring across an operating temperature range of 0 to 50 °C.

Non-volatile code and user parameters reside in a 1 MB flash EPROM, while machine-specific constants such as calibration factors are stored in an 8 KB EEPROM so they survive power cycling. The controller reads incremental encoder signals up to 250 kHz and also supports 28-bit SSI transducers for absolute feedback. Analog command channels accept either a 4 to 20 mA current loop or ±10 V references with a tolerance of ±25 mV, and matching output channels reproduce the same ranges for valve control. Storage is permissible from −20 to 70 °C, and reference voltages remain stable through the onboard precision source.