Product Description:

The BTA20.4-NA-ZP-VE-BS is a machine control board produced by Bosch Rexroth Indramat within the BTA20 Machine Control Boards series. The board forms the operator-level interface between a controller rack and on-machine devices such as proximity sensors, pushbuttons, and emergency stop stations. By concentrating safety loops and basic digital I/O on one panel, it simplifies wiring inside automated assembly lines and transfers consolidated status data to the higher-level PLC. It is mounted in the field, close to actuators, so signals can be checked without opening the main cabinet.

The board housing has a width of 407 mm, a height of 169 mm, and a depth of 119 mm. These dimensions allow installation behind machine fascia without extending beyond guard doors. The operator side is sealed by a varnished aluminum front panel that resists coolant splashes and abrasion. Ingress protection is rated at IP65, meaning the enclosure is dust-tight and resistant to water jets; the electronics can withstand washdown cycles in packaging or food-processing cells when the connectors are clamped. Three 10-pin hardwire terminals are located on the underside, so field cables enter with a controlled bend radius while keeping signal paths short.

Signal processing takes place on the backplane, while field data reach the host controller through the INTERBUS-S / BT-BUS channel; this serial link eliminates bulky parallel ribbon harnesses. The card accepts 8 digital inputs for sensor feedback and provides 8 digital outputs to drive indicator lamps or interposing relays. Safety-related motion release is handled by 3 enabling circuits, which are internally separate from the hardwired emergency-stop loops. The encoded override knob forwards a 4-bit Gray code to the mobile terminal BTC06.2, and the I/O is mapped to three consecutive words so the PLC can address the module with a single instruction block.