Product Description:

The BTA20.1-NA-SP-VA-BS board is a machine control module produced by Bosch Rexroth Indramat within the BTA20 Machine Control Boards series. Designed for CNC and general automation centers, the board handles discrete and analog data exchange between motion controllers, operator panels, and safety circuits. By consolidating input, output, and bus communication on one PCB, it streamlines installation inside electrical enclosures and serves as the core interface for feed override commands, emergency stops, and remote diagnostics. This layout reduces wiring complexity and supports coordinated exchange between machine-level signals and the higher-level control platform during normal operation.

Field communication is carried over the INTERBUS-S remote bus, and the onboard transceiver sustains a throughput of 500 Kbaud, allowing synchronized sampling of distributed sensors. The logic section processes a 48-bit word in each cycle, allocating address space for the board’s 48 discrete inputs and 24 transistor outputs. Two safety channels provide emergency stop signaling; the contacts are rated as 2 NO and are wired separately from standard I/O. That arrangement keeps safety wiring distinct from ordinary switching signals. RS-422/485 diagnostics operate with a differential amplitude of 5 V and draw up to 60 mA to support long cable runs inside large machines. The rotary selector uses a 4-bit Gray code so the feed ratio can be set without binary conversion errors.

The mechanical enclosure protects the electronics while giving operators direct access to the feed controller, which can raise axis velocity to 120% when process conditions permit. For panel integration, the front plate carries an IP65 rating that blocks dust and low-pressure water jets, while the enclosure behind it is graded IP20 to permit cabinet airflow. Deployment is permitted up to 1500 m above sea level. Separating the protected front from the cabinet-side housing allows the operator interface to remain accessible while the rear section stays inside the enclosure.