Product Description:

The BTA20.3-NC-DP-VB-BS is a machine control board manufactured by Bosch Rexroth Indramat for the BTA20 Machine Control Boards series. Installed in machining centers, packaging lines, or other automated cells, it acts as a distributed I/O node that funnels sensor states to the main controller and energizes actuators based on bus commands. This concentration of field signals onto a single printed circuit board reduces wiring complexity and preserves deterministic communication across the installation.

The board supports a 48-bit data width, giving the internal processor parallel access to status and command words without time-multiplexing delays. Communication to the supervisory PLC occurs via Interbus, and the embedded interface operates at an Interbus speed of 500 kbaud and identifies itself with Id code 3 when the ring is initialized. Logic electronics draw under 10 mA from the 24 V supply, lowering dissipation inside the cabinet. Field connectivity is extensive, with 40 inputs for limit switches, proximity sensors, or photo eyes, and 24 outputs that can each source 200 mA to solenoids or indicator lamps. This input-output mix allows the controller to handle medium-sized machine sections without external expansion modules.

Front sealing and a metal bezel give the operator face an IP65 front panel rating, so washdown splashes or airborne dust will not enter the circuitry from the cabinet door. The assembly fits cabinets easily because it has dimensions of 407 × 169 × 119 mm, and two manual override switches provide local forcing; their state is encoded through 4-bit Gray code so the processor reads changes without ambiguity. Ambient operation is rated from +5 °C up to a maximum operating temperature of +45 °C, while storage tolerance spans -20 °C to +60 °C, protecting spare units kept in storage. These temperature limits, along with the limited heat produced by the low input current, support reliable operation over time.