Rexroth Bosch Indramat has reinvented itself as the leading hydraulics equipment manufacturer in the world. The Electronic amplifier model VT 3000 (series 3X) controlvalve for controlling proportional pressure shines a spotlight on how innovative Rexroth’s engineers have become. Using their technological improvements, RexrothBosch have filled voids brought on by the demand of the industrial market for adjustable valve control. The VT 3000 proportionalcontrolcard is used to pilot hydraulic valve systems in a small and compact Eurocard format system.
The series 3X proportional control pressure cards use electrical current. Initially, the cards stabilize the current output using an integral voltage stabilizer. The operator’s safety is catered for with the integration of the potentiometer that limits the maximum input command voltage in the electrical system.
Special features that make it a world leader include the integration of a pulse width modulator. The pulsewidthmodulator is responsible for the ambient temperature range that the Eurocard provides. As a result, the temperature control limits overheating hence enhances optimum working conditions. To further improve this, a 100Hz/200Hz oscillator is also included in the design that optimizes valve performance.
Integration for mechanical features is also comprised in the primary design feature with a ramp adjustability design. The ramp generator has an independent control ‘up and down’ feature that allows easier adjustment of setting. As a result, a quick ramp adjustment can be achieved with maximum voltage output hence supporting rapid automation.
Any additional investments cost is eliminated with a programmable interface that allows a variety of software incorporation. This allows for customization of the specification of units in the controller, microprocessor and computer hence offering dynamic solutions that can be applied in a variety of fields.
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