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Actuator control board PSAP4
Product Introduction: PSAP4 not only realizes the action of the actuator with the input 4-20mA signal, but also provides a set of 4-20mA position sign
Product details
| The electronic proportional servo circuit supporting the electric actuator adopts SMT technology, which has the characteristics of small size and high reliability. This circuit will control the 4-20mA current signal of the electric actuator, compare it with the current position signal of the actuator, and control the opening or closing action of the actuator according to the deviation situation, so as to balance the position of the actuator with the input signal. PSAP4B not only implements the action of the actuator with the input 4-20mA signal, but also provides a set of 4-20mA position signals isolated from the working power supply and input signal to the system. PSAP4B can easily adjust the starting position and stroke of the actuator; Can easily switch between positive and negative effects; Set the actuator to fully open, fully closed, or hold state when the input signal fails. 1. Working principle The position signal conversion circuit converts the variation of the 1000 ohm three wire sliding resistance signal reflecting the position of the actuator into 4-20mA. The control input and position signal are simultaneously sent to the deviation amplifier for comparison, and the comparison result controls the on/off of the solid-state switch, achieving on/off control of the actuator. Adjusting sensitivity according to control requirements can change tracking accuracy and eliminate oscillations that may occur due to mechanical inertia. |
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