Plug-in electronic amplifier CEP S is manufactured by ARON (a Company of the Brevini Fluid Power Group). It has been designed in compliance whit EN 175301-803 (ex DIN43650), for direct mounting on the valve solenoid. The output stage operates on the pulse width modulation principle (P.W.M.) and is provided with current feedback in order to obtain a solenoid output current proportional to the reference input signal. Gain, minimum current and rise and fall ramp time adjustments are possible through the corresponding potentiometers fitted on top side of the card, and can be accessed by removing the screw on top and opening the cover of the box. The output current to the solenoid can be measured via the Valve Current test points with a standard electric tester.
The SVP electronic amplifier with current feedback current is designed to control two proportional solenoids. The SVP is designed and manufactured by ARON (a Company of the Brevini Fluid Power Group). The amplifier has two proportional outputs with current feedback and a single power output without current feedback. Each proportional output is controlled by an analogue input; it is therefore possible to control two proportional outputs independently (independent control for the proportional outputs, option I in the ordering code). Through the selection of a switch positioned on the card, it is possible to control both proportional outputs with only one analogue input (symmetrical control for the proportional outputs, option S in the ordering code). The symmetrical control is used for hydrostatic pumps in closed-circuit with two solenoids control. In the independent control mode, the two proportional outputs are mutually independent and it is possible to control separately two open-circuit pumps with single solenoid control or two motors. The card also has an output for brake release control: this is ON when the output current of the two proportional channels is at the minimum value. As the output current of one of the channels exceeds an adjustable percentage above the minimum current, the brake output state changes to OFF.
The possibility to use a joystick with integrated electronics, allows avoiding bulky systems and reduces costs, to be more competitive on the market. JMPEI - JMPIU are compact and rugged single axis joysticks, developed for use in those applications where fine control and handle functionality are paramount. These electronic remote control units supply directly the load current to the pump’s proportional solenoids, enabling a quick introduction into service. Owing to its digital electronic, these joystick can be easily tailored to your needs and provide optimal user comfort in adverse and rough conditions also.
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