Product Description:

The BTA20.3-NE-LF-KA-BS is a machine control board produced by Bosch Rexroth Indramat and included in the BTA20 Machine Control Boards series. It mounts on the operator side of automated equipment and links local push buttons, two emergency-stop circuits, and a BTC06.2 mobile terminal to a PLC. This arrangement keeps control functions near the machine interface while leaving the main control program in the central PLC. By converting field commands into bus messages, the board supports orderly operator input, status signaling, and safety-related control functions at the machine interface.

The board exchanges data with the control system over INTERBUS-S / BT-BUS, which reduces the need for separate point-to-point signal wiring. A gasketed front plate gives the assembly an IP65 rating when it is mounted in a cabinet door, helping keep dust and low-pressure water away from the electronics. The housing measures 407 x 169 x 119 mm, so the panel opening and installed depth remain consistent across machines. All logic, illumination, and sensor circuits operate from a single 18–30 V supply, and the unit consumes up to 18 W with a maximum line current of 1.0 A. This electrical arrangement allows the board to share the same 24 V system commonly used for other low-voltage machine devices.

During operation, the electronics remain stable within an ambient range of +5 °C to +45 °C, which suits standard electrical enclosures and protected machine panels. Diagnostics and parameter downloads are handled through the serial service port, which supports rates from 0 – 38400 baud so the communication speed can be matched to the connected service device. At 2.1 kg, the populated assembly is light enough for straightforward handling during removal or replacement, while still providing a solid feel once secured with its rail mounts. The board also combines field power conditioning, local key illumination, and emergency-stop supervision in the same unit, which helps keep operator-side control hardware compact.