Product Description:

The BTA20.4-NA-SP-VE-BS is a machine control board manufactured by Bosch Rexroth Indramat for the BTA20 Machine Control Boards series. Deployed on machine fronts, it coordinates sensor feedback, actuator commands, and diagnostic data between a host drive system and field devices. The board’s aluminum face laminated with polyester foil forms a sealed operator interface, allowing access to push buttons or indicators while the electronics manage sequencing and safety logic inside automated packaging, material-handling, or assembly lines.

Field communication is established through the INTERBUS-S / BT-BUS network, and the board accepts 8 digital inputs for limit switches, proximity sensors, or occupancy flags. Matching eight transistor outputs deliver drive enables or lamp signals, each routed through shielded cabling that terminates on a 9-pin D-SUB connector dedicated to the Interbus segment. The electronics are housed in a casing that measures 407 × 169 × 119 mm, and the internal microcontroller scans the I/O at rates aligned with the maximum link speed of 38,400 baud. When the module is installed flush on a panel, its front surface withstands coolant splash and dust to an IP65 rating, so it can operate on open machine frames without a separate enclosure.

The auxiliary logic rail supplies a stabilized 50 mA at +5 V for small sensors or encoder reference lines, while each transistor output can source up to 200 mA, allowing direct driving of indicator lamps or pneumatic valve solenoids without intermediate relays. Long-distance diagnostic links are supported through the 15-pin D-SUB pair that carries RS422 signals, and the differential transmit stage maintains a 5 V swing so that data integrity is preserved over extended cable runs in electrically noisy factories. For cabinet integration, the card bolts to mounting slots set at 375 × 137 mm, and its RS232 service port supports bench setup and diagnostics.