BTA20.4-ND-DB-VB-BS Bosch Rexroth Indramat
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The Bosch Rexroth Indramat BTA20.4-ND-DB-VB-BS belongs to the BTA20 Machine Control Boards series. It features 8 inputs and 8 outputs at 24 V, with 2 E-stop circuits and 2 gray code override switches. The control board uses INTERBUS-S / BT-BUS communication bus and offers IP65 protection on the front panel.
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Product Description:
The BTA20.4-ND-DB-VB-BS is a machine control board manufactured by Bosch Rexroth Indramat and supplied within the BTA20 Machine Control Boards series. Installed in automation cabinets, it concentrates the discrete I/O, safety loops, and manual override functions needed by small to mid-sized production cells. By translating field-level signals into bus telegrams and relaying commands back to actuators, the board establishes an electrical interface between sensors, emergency devices, and the higher-level motion or PLC controller. This arrangement lets door interlocks, selector switches, and operator pushbuttons be supervised from one panel-side assembly instead of several separate interface modules.
Eight 24 V inputs are provided for proximity switches, photoelectric sensors, or pushbuttons, and their state is reported across the INTERBUS-S / BT-BUS backplane. Serial transfers on this bus can be clocked up to 38400 baud, allowing timely updates in synchronized machine sequences. Each transistorized output channel can source up to 200 mA, which is suitable for pilot devices and other light control loads. The front panel is sealed to IP65 to help keep dust and coolant away from the electronics, while the panel uses varnished aluminum backed with polyester foil and occupies a mounting space of 375 × 137 × 119 mm. Differential driver stages on the RS422 link can supply 60 mA so remote operator panels can be connected without separate line buffers.
Downstream loads are handled by eight 24 V outputs, and each one can be forced locally through two gray-code override switches for setup checks or troubleshooting. Two E-stop circuits use hard-contact wiring so stop commands bypass normal logic paths and remain direct. The enclosure measures 407 × 169 × 119 mm, giving extra height for cable strain relief beyond the mounting footprint. RS422 signaling uses a 5 V differential level, supporting dependable communication between the discrete I/O section, the safety paths, and the manual override functions at the machine front end.
Frequently Asked Questions about BTA20.4-ND-DB-VB-BS:
Q: How many 24 V inputs does the BTA20.4-ND-DB-VB-BS board have?
A: The BTA20.4-ND-DB-VB-BS provides 8 digital 24 V inputs for system integration.
Q: How many 24 V outputs are featured on the BTA20.4-ND-DB-VB-BS?
A: There are 8 digital 24 V outputs available on this machine control board.
Q: What communication bus options does the BTA20.4-ND-DB-VB-BS support?
A: This board supports INTERBUS-S and BT-BUS communication protocols for system connectivity.
Q: What is the max baud rate for the BTA20.4-ND-DB-VB-BS machine control board?
A: The maximum baud rate supported by this control board is 38400 baud.
Q: What level of front panel protection does the BTA20.4-ND-DB-VB-BS offer?
A: Its front panel is protected to IP65, making it resistant to dust and water splashes.
