Servo Amplifier

AN220

The AN220 servo amplifier is suitable for controlling the most popular servo valves.

The module provides current ranges of -20mA, -100mA, and -400mA for this purpose. The valve modulation can be adjusted by an internal/external limiter.

In addition, the module is equipped with a PID controller, allowing a control system with a servo valve to be set up.

Features:

linear output stage with three current ranges (-20mA, -100mA, and -400mA)
one side of load at zero voltage, allows use as current driver
protected against wrong polarity
6 user-selectable voltage inputs (10 k /V), one –10V input via ramp generator, one 4...20mA input, one differential input
internal/external modulation limiting for positive and negative valve modulation, adjustment selectable
as separate or symmetrical
PID controller with external disable
control parameters adjustable on the front plate
ramp has wide range of adjustment (0.1...10sec) and can be disabled externally