Product Description:

The BTA20.2-NA-SP-VA-BS is a machine control board produced by Bosch Rexroth Indramat for the BTA20 Machine Control Boards series. It serves as an interface element inside modular CNC or motion-control racks, handling local I/O and safety signals so higher-level controllers can focus on trajectory and process logic. By concentrating eight internal tool or axis positions on one board, it reduces backplane traffic and streamlines wiring inside automated assembly or machining equipment.

This board sources peripheral sensors and lamps through a bus driver that delivers 50 mA of output current, which is adequate for typical proximity switches and LED indicators. Eight external input channels accept 8 x 24 V signals, while eight transistorized output channels switch 24 V loads such as solenoids or relays. A parallel register spans three I/O words, and the module has a 48-bit data width that fits neatly with byte-oriented PLC backplanes. Feedrate selection arrives from a four-bit Gray code encoder, which helps reduce transition errors during speed changes. For distributed cabinets, telegrams travel over the remote bus at 500 Kbaud, matching the update rates of mid-scale motion loops. The front panel carries membrane keys and status LEDs behind an enclosure rated at IP65, allowing washdown cleaning without water ingress.

Emergency-stop wiring terminates on 2 x NO contacts, providing a redundant path for the stop circuit. Once installed inside the rack, the rear casing maintains IP20 protection to reduce accidental contact with live tracks. Cabinet space is conserved because the overall width is only 407 mm, and the depth of 121 mm helps keep airflow paths clear for neighboring drives. Mounting with M5 x 10 screws onto a DIN rail base matches standard 22.5 mm increments for straightforward panel integration.