BTA20.4-NE-DC-VD-BS Bosch Rexroth Indramat
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The Bosch Rexroth Indramat BTA20.4-NE-DC-VD-BS is part of the BTA20 Machine Control Boards series. It supports up to four devices on the BT-Bus with a maximum length of 50 meters and features INTERBUS-S/BT-BUS communication with a data width of 48 bits and a rate of 500 kbaud. The board provides eight isolated 24 V inputs and outputs, includes two E-stop circuits, and is rated IP65 at the front panel.
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Product Description:
The BTA20.4-NE-DC-VD-BS control board is manufactured by Bosch Rexroth Indramat and belongs to the BTA20 Machine Control Boards series. Designed for distributed motion platforms, the board supervises axis drives and safety loops through INTERBUS-S or BT-BUS fieldbuses. In a typical installation, it mounts behind an IP-rated front panel and supplies coordinated logic to actuators, sensors, and the BTC06.2 mobile terminal, forming a dedicated automation node for material-handling machines and machining centers. This layout allows the control functions to remain close to the machine while keeping the operator interface accessible at the panel.
On the communications side, the board exchanges cyclic process data across INTERBUS with a width of 48 bits, refreshed at a serial rate of 500 kbaud. When operating as the BT-BUS master, it can address up to 4 subordinate devices, and the total bus wiring may extend to 50 m before repeaters are required. The front panel carries an ingress rating of IP65, so dust and low-pressure water jets cannot reach the electronic assemblies once the unit is mounted. Eight optically isolated 24 V inputs receive status from limit switches and sensors, while eight equally isolated 24 V outputs drive contactors or indicator lamps. An external BTC06.2 hand-held programming unit can be connected through the same bus without additional hardware, which simplifies local access to operating data and command functions.
The safety section integrates 2 dedicated emergency-stop circuits that interrupt all motion channels when either loop is opened, and 3 enabling circuits that must be held active for drive power to remain on. Standard outputs source up to 200 mA, with channel O7 reinforced to deliver 800 mA for pilot valves or status beacons that require higher current. Override positioning is encoded in 4-bit gray code, allowing deterministic jog commands during setup. All control lines are routed through galvanically isolated drivers to prevent field voltages from feeding back into the 24 V logic supply. This separation helps protect low-voltage control electronics from interference generated by external switching devices.
Frequently Asked Questions about BTA20.4-NE-DC-VD-BS:
Q: How many devices can be connected to the BT Bus on the BTA20.4-NE-DC-VD-BS?
A: The BTA20.4-NE-DC-VD-BS control board can support up to 4 devices on the BT Bus.
Q: What is the IP protection level of the BTA20.4-NE-DC-VD-BS front panel?
A: This model features an IP65 rating for the front panel, providing enhanced protection against dust and water at the interface.
Q: How many isolated 24 V inputs and outputs does the BTA20.4-NE-DC-VD-BS offer?
A: The BTA20.4-NE-DC-VD-BS includes 8 isolated 24 V inputs and 8 isolated 24 V outputs for versatile signal interfacing.
Q: What communication options and data handling features are present on the BTA20.4-NE-DC-VD-BS?
A: Communication is achieved using INTERBUS-S and BT-BUS interfaces, with an Interbus data width of 48 bits and a rate of 500 kbaud.
Q: What are the output current specifications for the BTA20.4-NE-DC-VD-BS control board?
A: The maximum output current for this unit is 200 mA, except for output O7, which can provide up to 800 mA.
