Product Description:

The VT-HNC100-4-3X-C-I-00-000 is a digital axis controller manufactured by Bosch Rexroth Indramat and supplied within the VT-HNC Digital Axis Controllers series. Designed to coordinate motion on hydraulic machinery, the device handles positioning, velocity, and pressure loops for servo valves and cylinders in automated assembly lines and presses. Installed in an automation cabinet, it serves as the central numeric control that closes loops between sensors and proportional valves, replacing discrete electronics with parameter-based setup.

This variant is configured for 4 hydraulic axes, and each axis receives two analog current inputs, two analog voltage inputs, one analog current output, and two analog voltage outputs per slot, allowing mixed sensor and actuator feedback. The controller operates from a wide DC supply of 18–30 VDC; within this range, internal regulators power the logic and I/O. A field rack can provide up to 20 digital outputs for on/off solenoids or status lamps, while communication with service software is through the RS232 service port. The enclosure has an IP20 protection class, so it must be installed in a closed cabinet. The unit is part of component series 3 and ships without a bus connection, so integration relies on point-to-point wiring rather than fieldbus modules.

Signal conditioning is supported by an encoder supply of +24 V and an isolated encoder logic rail of +5 V, letting differential encoders share the same backplane. For reference commands, the board provides a calibrated output of +10 V that drives external valve electronics, and input ripple must be kept below 1.5 Vpp to prevent controller resets. A separate 24 V sensor supply powers pressure transducers, while the inductive position sensor option is not installed to leave space for custom feedback hardware.