Product Description:

The VT-HNC100-2-21-M-16-0-0 is a digital axis controller manufactured by Bosch Rexroth Indramat within the VT-HNC Digital Axis Controllers series. Designed for hydraulic positioning tasks, this rack-mountable module coordinates motion and pressure loops so that two cylinders or rotary actuators follow programmed numerical commands with repeatable response. By combining onboard memory with field connections for directional valves and transducers, the unit assumes the closed-loop duties that would otherwise reside in a PLC. This supports compact decentralized control in presses, test rigs, or material-forming stations where precise axis behavior must be maintained.

Internal electronics are powered from a modest 8 W draw, which helps when cabinet thermal budgets are tight. Control algorithms run on a MC68376 32-bit processor that accesses 1 MB of flash EPROM for program storage and 256 KB of battery-backed RAM for parameter tables and motion programs; an additional 8 KB of EEPROM retains startup data. Setup and diagnostics take place through the front-panel RS232 (9.6 KBaud) port, and this version is supplied without a bus connection. The card’s 155 mm height and 106.5 mm width conform to standard Euro-rack spacing for slide-in installation.

Application flexibility is supported by the hardware profile: the board is the Version for 2 hydraulic axes and provides 16 Input / Output channels that can be freely assigned to valves, limit switches, or status lamps. With a chassis depth of 204 mm, it fits behind shallow cabinet doors, and a mass of 1.2 kg helps keep vibration low during machine operation. The unit belongs to component series 2 and mounts on a rack backplane. No separate evaluation electronics or inductive position sensor is included, so those functions must be provided externally.