Product Description:

The VT-HNC100-22/W-08-0-0 is a digital axis controller from Bosch Rexroth Indramat and belongs to the VT-HNC Digital Axis Controllers series. Designed for two hydraulic axes, it handles closed-loop motion tasks such as position or pressure control by converting sensor feedback into precise valve commands. The unit serves as the central NC element in electrohydraulic systems where accurate axis synchronization and parameter storage are required for repeatable machine cycles.

The controller processes field signals through 4 analog input channels that accept proportional feedback from transducers, while actuation is provided by 2 current output channels used to drive proportional servo or throttle valves. Machine states and commands pass through a mixed bank of 8/8 digital I/O, allowing interlocks, limit switches, and sequence controls to be wired directly. Program code and parameter sets are retained in 1 MB of flash EPROM, with dynamic variables buffered by 256 KB of RAM and an additional 8 KB of EEPROM available for nonvolatile counters. Signals from incremental encoders can be sampled at frequencies up to 250 kHz, providing adequate resolution for fast hydraulic cylinders. Communication with configuration software is handled through an RS-232 port operating at 9.6 kBaud. The controller does not include a fieldbus, so it integrates with other equipment through conventional wired signals.

All interfaces are housed in a metal case measuring 71 × 155 × 204 mm, making the controller compact enough for DIN-rail mounting inside a valve cabinet. The internal electronics have a power consumption of only 8 W, so the thermal load within the enclosure remains low. Real-time processing is executed by a 16/32-bit MC68376 processor that combines a CPU, timers, and analog-to-digital converters on a single chip, supporting deterministic cycle times for hydraulic motion loops. The module weighs 1.0 kg, making it easier to handle while minimizing the load on lightweight control panels.