Product Description:

The Bosch Rexroth Indramat BTA20.4-NA-BE-VB-BS belongs to the BTA20 Machine Control Boards series and serves as a centralized interface card for industrial automation cells. Installed in control cabinets, it bridges local sensor-actuator wiring with fieldbus and serial links so that motion controllers, safety relays, and supervisory PLCs can share real-time status data. By combining discrete I/O and communication ports on one board, it reduces cabinet space and simplifies wiring paths on assembly lines, packaging machines, and material-handling stations. This arrangement allows local machine signals and higher-level control communication to pass through one board instead of several separate interface modules.

The board handles internal logic in words that are 48 bits wide, allowing simultaneous processing of multiple flags and counters. Its backplane bus can source up to 50 mA, enough to power attached daughter cards without an auxiliary supply. The front panel carries a sealed keypad and display that meet the IP65 degree of protection, so washdown splashes or airborne dust do not reach the electronics. For distributed installations, the remote bus moves telegrams at 500 kbaud, matching Interbus cycle times used in high-speed assembly operations. Mechanical size is contained within 407 × 169 × 119 mm, permitting installation in shallow enclosures and retrofits where depth is limited. The protected operator interface also supports local viewing of status information at the enclosure door.

The I/O complement supports 40 digital inputs and 24 digital outputs, giving ample capacity for limit switches, light curtains, solenoid valves, and stack-light segments on mid-sized machines. Each output can deliver up to 200 mA, so relays or small DC loads can be driven directly without interposing contactors. For control circuits that already supply 24 VDC, the card offers 8 dedicated external 24 V input points, which keep emergency-stop or guard-door signals separate from the main logic rail while still monitoring them through the same Interbus channel. This mix of inputs and outputs suits machine sections that combine sensing, interlocking, and simple load switching on one controller node.