SVA-II servo amplifier is a box type amplifier with self-contained DC stabilized power supply, mainly for driving and one-stage closed-loop controlling of nozzle flapper servo valve and jet pipe servo valve, etc. It uses a portable standalone box, and it is easy to use. The front board is provided with a potentiometer with a scale locking mechanism for easy parameter adjustment. An ammeter is used for displaying the valve’s coil current for easy observation in commissioning. You can select LVDT demodulation board as necessary for controlling a closed loop having LVDT detection sensor.

I. Main Features:
Stage-I closed loop controlling of hydraulic servo system
Output current can be up to 100mA, also over current protection is provided
The front board is easy for adjusting such parameters as zero, gain, feedback volume, and disturbance, etc., also an adjustment locking mechanism is provided.
The ammeter on the front board displays the valve’s coil current
With a built in linear DC stabilized circuit. Needs only connecting with AC220V externally.
All the power supply, valve coil and LVDT sensor use independent plug connection, and it is convenient to connect peripherals.

II. Main Technical Parameters:

power supply: AC220V
Servo amplifier
Analogue input: ±10V, 0-10V, 4-20mA
Servo valve driving capacity: ±100mA, 100Ω
Proportional gain: 5-300mA/V
Disturbance signal: 200 Hz 6Vpp
Oscillator
Frequency: 2500Hz
Amplitude: 6Vpp
Demodulator
Ripple: