Product Description:

The VT-HNC100-1-1X-152 axis controller is produced by Bosch Rexroth Indramat within the VT-HNC Digital Axis Controllers series. Designed as a stand-alone module for hydraulic positioning tasks, it is used where a single hydraulic axis must be regulated without a larger multi-axis control rack. It supports one hydraulic axis and is suitable for presses, molding machines, or synchronized cylinders in automated lines. The unit is categorized as component series 1 and follows the hardware layout used in earlier HNC designs.

The analog output resolution is 1.25 mV, enabling fine valve trimming on pressure or position loops. The power stage can deliver up to ±23 mA to current-controlled servovalves, and a separate channel supports ±10 mA for voltage outputs. Feedback circuits use a voltage input resistance of 200 kΩ ±2% and a current input resistance of 100 Ω ±0.2%, with resolutions of 5 mV and 5 µA. Incremental or absolute encoders are accepted at clock rates reaching 250 kHz. With a thermal budget of 8 W, the controller fits densely packed panels. Real-time computation relies on a 16/32-bit MC68376 processor working with 256 KB of RAM to run PID, cam, and interpolation routines.

Program and parameter retention is handled by 1 MB of flash and 8 KB of EEPROM, so updates remain stored after power cycling while transient data remains in RAM. The serial diagnostics port communicates at 9.6 KBaud over a standard RS-232 connection. For absolute transducers, an SSI interface with a data width of 28-bit is available for magnetostrictive or optical scales. Drive modules receive a bipolar command derived from a reference of ±10 V ±25 mV, giving symmetric authority to extend or retract cylinders. These storage, communication, and reference functions are integrated into a compact Eurocard format.