The AN238 servo amplifier has been designed for the control of axial piston pumps valves in conjunction with servo valves
Linear output stage
Protected against wrong polarity
Different inputs for the most common input voltages. 1 user-selectable input (10k /V), 1 ±10V differential input
Ramp can be disabled externally
Quadrant-sensitive ramp with wide range of adjustment (0.2...10sec)
External enable (normally closed circuit)
External controller enable
Adjustable pressure controller
LED indicators for 'Power on', 'Ramp off', 'Fail safe', 'Ctrl on'
Potentiometers on the front plate for setting ramp times, Qmax and controller P and I components
Monitoring of pressure sensor and angular resolver on pump yoke
Logic output for malfunctions

Type		Servo amplifier
Use		Controlling axial piston pumps valves in conjunction with servo valves
Connector		48 pins DIN 41612 F48
Supply voltage		24V DC (22...32V DC)
Output current		Imax = ±300 mA
Inputs		2x actual pressure 4...20 mA 1x actual value ±5V
Dither		Factory setting approx. 200Hz. Amplitude fixed, approx. 10% of rated current
Measurement sockets		Valve current 1V = approx. 100mA Command signal ±10V Pressure: system dependent Torque: system dependent Slewing angle: system dependent
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