Product Description:

The VT-HNC-100-1-22/W-08-L-0 is a single-axis proportional amplifier controller produced by Bosch Rexroth Indramat within the VT-VSPA Proportional Amplifiers series. Designed for hydraulic motion control, it converts drive commands from a PLC into precise analog and current signals that actuate servo valves and monitor sensor feedback. The device is intended for cabinet installation and uses a wall-mounting arrangement to integrate with press, molding, or material-handling machinery. Its integrated analog stages eliminate separate valve drivers, reducing wiring complexity and helping the controller fit into compact hydraulic control cabinets.

Inside the module, the control task is assigned to a 16/32-bit MC68376 microcontroller, and parameter storage is secured in 1 MB of Flash memory. The controller supports 1 axis, but it also carries two current output channels for dual-coil valves, four voltage input channels, and four voltage outputs. The analog stages resolve input signals down to 5 mV and drive outputs with sub-millivolt precision, while eight digital inputs and eight digital outputs provide discrete interfacing for machine status and command exchange. Even with this feature set, the housing occupies only 71 × 155 × 192 mm and typical dissipation is 8 W, which permits dense cabinet layouts and supports passive convection cooling.

To synchronize with external encoders, the incremental interface tolerates frequencies up to 250 kHz, while an SSI port transfers absolute positions at a word width of 28 bits. This combination allows the unit to work with both relative and absolute position feedback in hydraulic axis applications. Voltage outputs refresh with a granularity of 1.25 mV, enabling fine valve overlap compensation and stable analog control behavior. The amplifier weighs 1.0 kg, so it can be fixed on light control panels without additional supports, and the low mass helps limit stress on the cabinet structure during machine vibration.