Product Description:

Bosch Rexroth Indramat manufactures the VT-HNC100-1-1X-120 digital axis controller within the VT-HNC Digital Axis Controllers series. The unit is intended to coordinate one hydraulic axis, converting position and force feedback into drive commands for servo-hydraulic actuators in automated machinery. By integrating analog sensor inputs and digital field interfaces, the controller provides closed-loop regulation that allows presses, molding machines, and test rigs to move with repeatable accuracy during positioning, force control, and synchronized machine cycles.

The controller is configured for one hydraulic axis, so all internal resources focus on a single motion channel rather than being divided across multiple axes. Four current input channels capture transducer signals with a resolution of 5 µA, while four voltage input channels sample analog references in steps of 5 mV. The same card also offers four impedance measurement inputs for bridge circuits and two interfaces for inductive transducers, giving flexibility in sensor selection. Position feedback from incremental encoders is accepted up to 250 kHz, and an SSI interface handles words of 28 bits for absolute encoders. Command generation is delivered through two current outputs and four voltage outputs, and the voltage path can be trimmed in increments of 1.25 mV to support precise valve staging.

Computation is handled by the MC68376 32-bit microcontroller, backed by 8 KB of EEPROM for parameter retention, 1 MB of flash memory for onboard program storage, and 256 KB of RAM for real-time data queues. Serial diagnostics use an RS-232 port that operates at 9.6 KBaud, providing a direct service connection for data exchange and controller access. The unit is part of series 1 in the HNC100 product line, which identifies the release used for this controller platform.