Product Description:

The VT-HNC100-1-23/W-08-C-0 is a digital axis controller produced by Bosch Rexroth Indramat for the VT-HNC Digital Axis Controllers series. It is configured for a single hydraulic axis and mounts on a cabinet wall, where it translates motion commands into precisely metered valve currents for industrial machinery. By combining analog, digital, and fieldbus interfaces, the unit establishes closed-loop position and force control in presses, die-casting machines, and similar equipment.

The analog input stage detects signal changes as small as 5 mV, allowing pressure or displacement transducers to be sampled with fine electrical granularity. Command signals sent to servo amplifiers are generated at a resolution of 1.25 mV, so output steps stay below typical valve hysteresis. A CANopen fieldbus port exchanges setpoints and diagnostic data with PLCs on the machine network, reducing hardwired I/O. Incremental encoder feedback can be read at up to 250 kHz, which supports high-speed transducers without pulse loss during rapid cylinder motion. Internal electronics draw only 8 W, so the controller produces little heat and can share low-capacity power supplies with other cabinet devices.

A service computer connects through the RS-232 port at 9.6 kbaud for configuration and diagnostic access. Absolute position devices that use SSI are accepted with a data width of 28 bits, providing adequate capacity for long-stroke hydraulic axes. Program code, parameter files, and user data are retained in a 1 MB Flash EPROM, preventing data loss after power is removed. The enclosure weighs 1.0 kg, so a single mounting rail can carry the load without additional bracing. Four voltage inputs, four voltage outputs, two current outputs, and eight configurable digital channels provide the signal connections required for proportional valve actuation and sensor feedback in hydraulic automation.