VT-MSPA1-10-1X/V0

***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Bosch Rexroth directly.***
The Bosch Rexroth VT-MSPA1-10-1X/V0 (R901142355) is an advanced analog amplifier designed for controlling pressure valves without electrical feedback. This device's modular construction facilitates effortless installation on standard top hat rails commonly found in control cabinets, streamlining the setup process. Equipped with a command value input, the amplifier can be manipulated through a standard command value signal ranging from 0 to 10 V. A zero point potentiometer (Zw) is included for precise zero point offset adjustments. The amplifier also features a ramp generator that limits the incline of the control output, allowing users to set rising and falling command value signal times via trimmers t< and t>, respectively. For achieving a linear command value-pressure characteristic curve, this model incorporates a characteristic curve generator where the trimmer Gw sets the solenoid's rated current at 0.1 A. The clock generator within creates an output stage frequency that corresponds to the command value. The power output stage is another critical component of this device; it produces a PWM signal derived from both the characteristic curve generator and clock frequency, which then powers the solenoid. A current controller monitors this process, ensuring any discrepancies between control output and actual current are corrected. Furthermore, VT-MSPA1-10-1X/V0 boasts fault recognition capabilities that monitor solenoid conductors for issues such as cable breaks, short circuits, and overcurrent in the output stage. In case of an error, an LED indicator will alert by switching off its green 'ready for operation' display. Additional features include differential input for voltage adjustment, separately adjustable ramp times for both up and down signals in the ramp generator, adjustable zero point and sensitivity controls, a dither generator to prevent sticking in proportional valves, LED displays indicating various operating states, and reverse polarity protection to safeguard the operating voltage. This comprehensive array of features makes Bosch Rexroth's VT-MSPA1-10-1X/V0 (R901142355) a robust solution for precise pressure valve control applications.