Product Description:

The BTA20.2-NA-ZP-BA-BS machine control board is produced by Bosch Rexroth Indramat within the BTA20 Machine Control Boards series. Mounted behind the operator interface, it mediates between field devices and the central motion controller, translating sensor states into bus data and returning actuator commands that drive automated machining sequences. Its circuitry is optimized for deterministic digital I/O transactions required in metal-cutting and assembly machines.

On the communication side, the board links to a plant network through the INTERBUS-S / BT-BUS fieldbus. A data width of 48 bits per process image permits simultaneous transfer of status and command words without segmenting. Addressing on the bus is fixed by Interbus identification code 3, so the controller can poll the module deterministically. For auxiliary loads, the internal +5 V backplane rail provides up to 50 mA maximum, while differential RS-422/485 drivers can supply a separate channel with 60 mA maximum. These current limits protect logic stages and external transceivers from overload. The printed circuit card extends only 100 mm into the cabinet, enabling shallow enclosures, and engages the backplane through 30 hard-wired socket pins that deliver low-resistance signal paths.

Physical characteristics support straightforward panel integration. The aluminum front plate carries an IP65 seal against dust and water jets, whereas the remaining housing is rated IP20 for controlled cabinet interiors. Overall dimensions measure 169 mm in height, 407 mm in width, and the previously noted depth, so the board aligns with standard 19-inch sub-racks. Field wiring terminates on screw blocks laid out for 48 discrete inputs and 24 transistor outputs, allowing direct connection of limit switches, proximity sensors, and pneumatic valves. Remote data exchange proceeds at 500 kbaud, matching the timing requirements of the INTERBUS remote segment and ensuring cycle-synchronous updates even when all channels are toggling.