Although most manufacturing industrial automation concepts are yet to be implemented fully, there has been remarkable progress since the 1980s. For instance, high precision and repetitive tasks in large industries like car assembly plants have been completely taken over by industrial robots and computer-operated machines. Additionally, industrial automation offers high computing capabilities and a high operational degree of freedom. On this field, Rexroth Bosch is a leading developer and manufacturer for electric drives and controls, as well as for industrial hydraulics.
Rexroth VT 2000 K 44-2 is a proportional power amplifier used to control proportional valves and pump controls. This model is series 40-49 and comes as a board with the terminal strip. Important technical data include 24 V DC power supply, ± 9 V input control voltage, and power of 30 W.
The main functions are power gain (amplification) between the control signals and the current in the proportional solenoids, compensation for overlap/underlap via a step function generator, generation of ramp functions and setpoint specifications. Position-controlled valves generally feature the feedback controller and displacement transducer with a cable break monitor.
The VT 2000 K 44-2 amplifier card has factory-integrated features, that are of great importance for smooth performance and rapid adjustments. Pulse width modulated output provides a dithering effect to reduce hysteresis and allows high ambient temperatures. For optimum pump of valve performance, there is a 100 Hz/200 Hz oscillator. Potentiometer limits the maximum input command voltage signals. There are also voltage stabilizer, ramp generator, ramp times can be separately adjusted, and a differential amplifier input that enables interface with programmable controllers, microprocessors and computers.
Rexroth ensures maximum performance of its products and the VT 2000 K 44-2 amplifier card will definitely satisfy even the most complicated requirements.
|Connection Type:||Board with terminal strip|
|Name Plate:||Factory Assigned|
|Pulse Frequency:||Valves (standard) 200 Hz|
|Operating Voltage:||24 VDC + or - 10 %|
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