Product Description:

The VT-HNC 100-1X-140 digital axis controller belongs to the VT-HNC Digital Axis Controllers series manufactured by Bosch Rexroth Indramat. As a closed-loop motion unit, it supervises hydraulic or electromechanical axes, converts process feedback into control commands, and interfaces with higher-level PLCs through serial links and analog channels. Within an industrial automation cell, the device performs position, speed, and pressure regulation tasks that would otherwise require multiple discrete cards.

This controller accepts an operating supply of 18 to 36 VDC and draws only 8 W, so cabinet thermal load is minimal. Control logic is executed by a 16/32-bit MC68376 microprocessor, while program code and parameters are stored in 1 MB of flash memory. Four differential current inputs cover a span of 4 to 20 mA, enabling direct connection to pressure transducers or displacement sensors without external shunts. Analog processing is handled inside the controller so measured values can be used directly for regulation tasks. The ambient operating range of 0 to 50 °C supports installation in most machine enclosures.

Signal conditioning for bridge or LVDT pickups is handled by four voltage inputs with an input resistance of 200 kΩ, and four analog outputs reproduce command values across a range of −10 to +10 V for servo valves or variable-frequency drives. Current loop integrity is monitored against a reference of 100 Ω to detect open-wire faults. Configuration uploads and diagnostics are performed over an RS-232 port running at 9.6 kbaud, allowing parameter changes through a direct serial connection. Two current outputs, each programmable from 4 to 20 mA, provide feedback-independent actuator control. Static data such as calibration tables are retained in onboard EEPROM, while dynamic variables reside in battery-backed RAM. The module can be stored at temperatures down to −20 °C and transported at temperatures up to 70 °C.