Servo Amplifier (Sva-iii-s)

These Servo Amplifier (SVA-III-S) is a board type electrohydraulic servo amplifier with position demodulator, mainly for controlling 3-stage valve having LVDT position sensor, is of LVDT demodulator circuit, and realizes closed-loop controlling with the inner loop of servo valvea s coil. Moreover, it is of PID controlling for external loop. By different settings of the jumping switch, it can also be used for controlling closed loop of position formed by a 2-stage servo valve and LVDT sensor.

Main Technical Parameters:
Power supply: independent A 15V or A 15V, A 24V
Servo amplifier
Analogue input: A 10V, 0-10V, 4-20mA
Load capacity: A 100mA, 100IC
Proportional gain: 5-300mA/V
Integration gain: 8-4000mA/V-sec
Differential gain: 0.04-4mA/V-sec
Inner loop gain: 10-200mA/V
Oscillator
Frequency: 100-2500Hz
Amplitude: 2-11Vpp
Demodulator
Ripple: <40mVp-p (within given excitation frequency)
Gain: 1-10Vdc/Vp-p
Operation range: 0a -50a
Outline size: 100X160mm