BTA20.2-NA-WS-VA-BS Bosch Rexroth Indramat
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MPN: R911284604
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The Bosch Rexroth Indramat BTA20.2-NA-WS-VA-BS belongs to the BTA20 Machine Control Boards series and features 8 standard component slots. It provides 8 external 24 V inputs and 8 external 24 V outputs, with a maximum bus +5 V output of 50 mA. The board is equipped with IP65 front protection and IP20 housing protection, supports a max baud rate of 38400 Baud, and offers 48 Interbus-s inputs and 24 Interbus-s outputs.
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Product Description:
The BTA20.2-NA-WS-VA-BS is a modular machine control board produced by Bosch Rexroth Indramat for the BTA20 Machine Control Boards series. Designed for panel-mounted operator stations, it bridges discrete switches, Interbus-S field wiring, and serial diagnostics with the main PLC. Within an automation cell, it issues enable commands, forwards feedback, and enforces safety interlocks so that drives, sensors, and actuators respond predictably during normal running or controlled stops. This arrangement allows local operator devices to exchange status and command signals with the central control system through one dedicated interface board.
Its communication layer is based on the Interbus-S protocol and transfers a data telegram that is 48 bit wide, identified on the ring by ID code 3. The node can accept 48 logical input bits and return 24 outputs, allowing the PLC to address mixed sensors and solenoids without an additional gateway. A serial diagnostics port supports RS-422/485 signaling and draws up to 60 mA, while the on-board logic rail can source 50 mA at +5 V for status LEDs or light curtains. Eight external 24 V inputs authorize operations such as mode selection, and an equal number of outputs drive stack lights or contactors. Two acknowledge circuits confirm operator presence, and eight standard component slots permit application-specific daughter cards. Data exchange reaches 38,400 baud, which supports timely refresh of process bits during fast machine cycles. The board therefore combines bus communication, local I/O handling, and diagnostic access in one panel-mounted control element.
Safety and manual override functions are handled separately from the cyclic bus traffic. Emergency shutdown uses 2 x NO E-stop contacts in the safety circuit. For incremental speed reduction, the board interprets a 4-bit Gray code override signal and limits feed motion up to 120% of the programmed value. The front panel carries membrane keys protected to IP65, while the internal electronics remain within a housing rated IP20. This separation helps the operator interface tolerate moisture and dust exposure at the panel surface while the internal electronics remain shielded inside the enclosure.
Frequently Asked Questions about BTA20.2-NA-WS-VA-BS:
Q: How many standard component slots are available on the BTA20.2-NA-WS-VA-BS?
A: The BTA20.2-NA-WS-VA-BS features eight standard component slots for modular expandability.
Q: How many external 24 V inputs are supported by the BTA20.2-NA-WS-VA-BS?
A: This model provides eight external 24 V inputs for field device connectivity.
Q: What level of front protection does the BTA20.2-NA-WS-VA-BS offer?
A: The BTA20.2-NA-WS-VA-BS offers front protection rated at IP65, safeguarding it from dust and water jets.
Q: What is the maximum baud rate supported by the BTA20.2-NA-WS-VA-BS?
A: Its maximum baud rate for communication is 38400 Baud, supporting rapid data exchange.
Q: What is the override maximum percentage for the BTA20.2-NA-WS-VA-BS?
A: The unit supports an override maximum of 120%, allowing limited temporary increases above base operation.
