Product Description:

The VT-HACD-3-2X-P-I-00-000 belongs to the VT-HACD Digital Axis Controllers series from Bosch Rexroth Indramat. This plug-in card functions as a closed-loop controller for hydraulic or electromechanical axes, generating precise analog command signals while reading multiple feedback channels. Within an automation cell, it sits between a motion-control PLC and proportional valves or servo drives, translating fieldbus commands into voltage or current outputs that drive actuators to the requested position, velocity, or force.

The module draws only 200 mA from the backplane 24 V supply, and each digital input loads the upstream I/O rack with just 7 mA. A dedicated PROFIBUS-DP interface exchanges setpoints and diagnostic data at up to 12 MBaud, allowing synchronized multi-axis coordination. High-resolution position capture is supported through two encoder ports: an incremental channel that accepts edge rates up to 250 kHz and an SSI port that transfers absolute words of 28 bits. The analog acquisition chain samples current loops with 5 µA granularity, while voltage feedback is quantized in steps of 5 mV. Output drivers can source up to 10 mA in voltage mode or 20 mA in digital sink mode, and the current outputs remain linear into loads as low as 500 Ω.

Command generation mirrors the input side, and voltage signals leave the card with a resolution of 1.25 mV (14-bit) for smooth and consistent control behavior. The housing meets IP20, so the card must be installed inside a control cabinet where dust and fluid exposure are limited. Despite two analog channels, eight digital inputs, and four digital outputs, the card weighs only 930 g and occupies a width of 65 mm, leaving room for supplementary relay or safety modules. A stabilized +10 V reference is also provided on the front terminals to power potentiometers or linear transducers.