VT-HACD-3-21/N-I-00/000 Bosch Rexroth Indramat
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MPN: R901276379
The Bosch Rexroth Indramat VT-HACD-3-21/N-I-00/000 belongs to the VT-HACD Digital Axis Controllers series and features six analog inputs with three analog outputs, as well as nine digital inputs and eight digital outputs. This controller supports a PROFINET RT bus system and works with incremental or SSI position transducers, providing an encoder frequency up to 250 kHz. It has an IP20 protection class, a current consumption of 200 mA at 24 VDC, and weighs 1162 grams.
Internal Product Review
The VT-HACD-3-21/N-I-00/000 is a Bosch Rexroth digital axis controller with PROFINET RT communication and IP20 protection. Incremental/SSI position transducer support and a 250 kHz maximum encoder frequency give the controller strong feedback capability for precise motion control. A practical I/O mix of 9 digital inputs and 8 digital outputs makes this model a capable choice for coordinated axis applications.
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Product Description:
The VT-HACD-3-21/N-I-00/000 is a modular digital axis controller developed by Bosch Rexroth Indramat for the VT-HACD Digital Axis Controllers series. Installed inside machine control cabinets, the board interprets sensor feedback and bus commands to generate precise valve and drive reference signals. In industrial automation systems, it coordinates hydraulic or electromechanical axes so that a supervisory PLC can execute position, velocity, or pressure profiles with repeatable accuracy.
To interface with process variables, the controller provides 6 differential analog inputs sampled with a voltage resolution of 5 mV and a current accuracy of 5 µA. Output commands are delivered through 3 analog channels that operate in 1.25 mV increments or with a fine current resolution of 1.25 µA at the terminals. Nine digital inputs and eight digital outputs handle signals from limit switches, direction controls, and solenoid coils without external relays. Network communication uses PROFINET RT, enabling cyclic setpoint exchange with higher-level controllers. Internal electronics draw only 200 mA at 24 VDC, allowing the module to operate from the machine’s 24-volt supply rail. A stabilized reference of +10 V ±25 mV at 20 mA supplies position sensors that require an excitation source.
For feedback devices, the card accepts incremental encoders or SSI transducers and counts signals at frequencies up to 250 kHz. It decodes serial words with widths of up to 28 bits, supporting high-resolution stroke measurements in presses, injection molding machines, and test stands. The enclosure protection rating is IP20, which limits the board to enclosed cabinet installations while allowing accessible field wiring. The assembly weighs 1,162 g and mounts on a DIN rail beside other input and output modules. Channel and bus LEDs provide immediate diagnostic information about signal activity and network status.
