SGDA-01VP servo package

In the servo amplifier, the preamplifier synthesizes three input signals and a feedback signal into a deviation signal, and amplifies it into a voltage signal U22-21 output. At the same time, the output voltage is converted into a trigger pulse by trigger 1(or 2) to control the thyristor turn-on of the main circuit 1(or 2) of the thyristor, so that the AC 220V power is added to the winding of the two-phase servo motor to drive the two-phase servo motor to rotate. When △1>0, U22-21>0, flip-flop 2 and main loop 2 work, and the two-phase servo motor turns positive; When △1<0, flip-flop 1 and main loop 1 work, and the two-phase servo motor reverses; The circuit composition and parameters of the two sets of triggers and the main circuit of the two sets of thyristors are exactly the same, so when the input signal and the position feedback current If are in equilibrium, the output of the pre-amplifier U22-21≈0, there is no trigger pulse output of the two triggers, the thyristors in the main circuit 1 and 2 are blocked, the power supply of the two-phase servo motor is disconnected, and the motor stops rotating.