Product Description:

The BTA20.4-NA-PP-VE-BS is a machine control board produced by Bosch Rexroth Indramat for the BTA20 Machine Control Boards series. Mounted inside an operator console, it bridges the higher-level PLC with individual drives and safety devices on an automated line. By combining feed-rate override management, emergency-stop handling, and fieldbus communication on one compact card, it streamlines panel wiring and centralizes key interface logic within industrial automation cells. This arrangement lets console controls, drive permissions, and stop commands pass through a single board instead of separate interface modules.

Primary communication is carried over the INTERBUS-S / BT-BUS fieldbus, with a channel capacity of 3 words (48 bits) that is refreshed at a remote bus rate of 500 kbaud. Eight external inputs and eight external outputs are mapped into this data area, while three enabling circuits provide watchdog interlocks for drive release. Feed override information is delivered through a 4-bit Gray code so speed commands retain positional consistency during transitions. When the front panel is exposed to washdown areas, the faceplate’s rating of IP65 prevents dust and water jets from reaching the electronics. During operation, the logic section draws up to 1.0 A, allowing it to share low-current auxiliary supplies with other control modules. This helps keep communication and operator input signals coordinated during normal machine operation.

Total demand remains limited to 18 W, so cabinet heat rise is modest even when all outputs toggle continuously. Two dedicated emergency-stop loops provide shutdown through 2 independent circuits, and motion can resume only after a reset. Feed velocity can be trimmed in precise increments; sixteen digital positions correspond to 16 discrete steps that span zero to a ceiling of 120 %, letting operators slow or accelerate a process without rewriting drive parameters. These override selections stay latched until a new enable signal is issued, preventing inadvertent changes while the machine is active. That behavior helps keep commanded speed changes deliberate when the machine is switched between production states.