Product Description:

The VT-HNC100-1-1X-234-5 is a digital axis controller produced by Bosch Rexroth Indramat for the VT-HNC Digital Axis Controllers series. Within hydraulic motion loops this unit supervises valve position, feedback, and sequencing so a programmable logic controller can treat a hydraulic cylinder like a numerically controlled drive. By integrating command processing, sensor acquisition, and analog or current control, the VT-HNC100-1-1X-234-5 converts high-level position or force setpoints into precise flow control signals suitable for press, molding, and test stands.

It is shipped as the version configured for 1 hydraulic axis, providing four voltage and four current input channels that accept transducer signals while two current and four voltage outputs drive servo or proportional valves. A 16/32-bit MC68376 microcontroller executes closed-loop algorithms that reside in 1 MB of Flash EPROM, and parameter sets are buffered by an 8 KB EEPROM when the unit is powered down. Real-time variables are handled in 256 KB of battery-backed RAM, allowing fast tool change without reloading data. The feedback block samples an incremental encoder up to 250 kHz, so axis velocity and position are captured with minimal phase lag. Overall power draw stays within 8 W, which simplifies cabinet thermal design.

Signal conditioning is tailored for industrial sensors. The current inputs present 100 Ω impedance so that 4–20 mA transmitters see a defined load, while the voltage inputs present 200 kΩ impedance and a resolution of 5 mV, reducing measurement error over long distances. Outputs can source or sink ±23 mA to directly modulate valve coils, or deliver ±10 mA and ±10 V reference levels; the latter is trimmed within ±25 mV for repeatable command scaling. Component series code 1 identifies the hardware revision, and the shared analog bus keeps sensor wiring simple.