AN209

Servo Amplifier

The AN209 servo amplifier has been designed to control single-magnet proportional valves and throttle-valves.

The module is provided with various setpoint inputs: 4-20mA, 0-20mA, 0-5V, 0-10V, user selectable 10k /V An external enable input allows to lock the amplifier.

The ramp gradients can be set separately for rise and fall.

Features:

• protection against wrong polarity
• short-circuit proof
• external ramp switch-off
• external stop
• measurement sockets for setpoint and valve current
• the negative of the power supply is at the same potential as the input zero voltages. This allows several servo amplifiers to be operated from a common power supply.
• excellent dynamics due to use of fast output stage
• wide range of adjustment for ramps
• 5 different setpoint inputs giving great flexibility of input circuit
• pulse width modulation
• plug-selectable dither frequency