Product Description:

The VT-HNC100-4-3X-P-I-00-G04 is a digital axis controller produced by Bosch Rexroth Indramat within the VT-HNC Digital Axis Controllers series. It is designed for electro-hydraulic motion sequences and performs closed-loop position and velocity control for hydraulic cylinders or proportional valves in industrial machinery. By interfacing directly with sensors and actuators, the unit coordinates multi-axis movement and links that motion to a higher-level programmable automation system. This allows hydraulic functions to be managed from one controller while maintaining precise response to command and feedback signals.

This version is configured for 4 hydraulic axes, allowing one unit to manage several motion channels in the same machine. Each slot provides 2 current inputs for analog command signals from devices such as pressure or flow sensors. Each card also includes 2 voltage outputs per slot for actuation references, while separate voltage input channels can accept feedback such as spool position or load cell signals. A dedicated encoder supply of +24 V powers connected position transducers, and the logic section also provides +5 V for differential encoder signals together with a +10 V reference. In addition, one current output channel is available per slot so proportional valves can be driven directly without external signal converters.

For plant networks that rely on decentralized drives, the module operates without a bus connection, so machine wiring must use the parallel interface. The front panel provides 11 digital I/O lines per slot and can switch up to 20 digital outputs overall, which supports local handling of interlocks, limit switches, and alarm contacts. Position feedback uses Incremental/SSI, allowing the controller to process signals from linear scales or rotary encoders with fine resolution. The housing has an IP20 rating for cabinet-mounted installation, and the shared 24 V sensor rail supports connected transducers while a maximum supply ripple of 1.5 Vpp helps maintain stable reference signals.