Product Description:

The VT-HNC100-4-3X-N-I-00-000 is a digital axis controller manufactured by Bosch Rexroth Indramat for the VT-HNC Digital Axis Controllers series and is part of the Digital NC control HNC100 product line. It serves as the central control element in electro-hydraulic motion assemblies, where it manages position, velocity, and pressure loops for industrial machines. By combining drive commands, feedback evaluation, and diagnostic routines in one compact module, the device helps simplify cabinet installation and supports modular automation layouts. This type of controller is commonly used where hydraulic axes must follow precise motion commands and remain responsive under changing load conditions.

This model is configured for 4 hydraulic axes, so one controller can coordinate multiple hydraulic motion channels. Each axis is provided with 11 digital inputs, and the controller can expose up to 20 digital outputs for valve or relay actuation. The digital I/O set allows the controller to monitor switches and command external devices without a separate logic module for basic axis-related signals. The unit has no bus connection plug, yet the internal Ethernet controller still exchanges data at 100 Mbit/s in full-duplex operation with a minimum bus cycle time of 2 ms. A 32-bit PowerPC processor executes motion profiles while supporting an encoder capture rate of 250 kHz and a cyclic process-data window of 992 bytes. These resources support high-resolution position control and quick response to hydraulic load changes.

For cabinet integration, the unit carries an IP20 protection rating and belongs to component series 3, which keeps the housing suited to enclosed installations. Encoder feedback can arrive through an SSI channel using Gray-code framing over an RS-485 physical layer with a data width of 28-bit. When analog commands are used, the voltage outputs resolve to 1.25 mV per step for accurate valve modulation. The available feedback and analog output functions make the controller suitable for proportional valve applications that depend on fine command resolution. Because no inductive position sensor is fitted and axis synchronization is disabled, the application software must provide external interpolation and any required cross-axis timing.