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Electronics
Servo Amplifiers
Servo amplifier cards convert an input signal to a proportional current to drive the servo valve torque motor. On industrial hydraulics systems several servo amplifiers feature an integrated PID (proportional, integrator, derivative) control circuit, which allows tuning for optimum performance of position control, or constant velocity circuits.

With the added ability to combine the PI, PD, or PID controls for any circuit, a wider range of electrohydraulic motion control sequences can be engineered, for sophisticated applications in automotive, plastics, machine tool, heavy industry and other applications.


Model VT1600 servo amplifier
Data Sheet (PDF)
RE 29 716

Model VT1600 servo amplifier
Series 3X


An electrohydraulic control component used to control hydraulic servo valves.

Key features:
  • By altering internal bridges, the PID regulator may be uncoupled, so the positioning regulator it operates can be directly controlled.
Download VT1600 Series 3X Servo Amplifier Data Sheet


Model VT1610 servo amplifier
Data Sheet (PDF)
RE 29 717

Model VT1610 servo amplifier
Series 3X


An electrohydraulic control component used to control servo valves, or proportional valves with servo valve pilot stages and electrical feedback of the main spool position.

Key features:
  • By altering internal bridges, PID regulator may be uncoupled, so positioning regulator it operates can be directly controlled
  • Oscillator-demodulator is mounted on an extra card plugged on main card and matched on valve being controlled
Download VT1610 Series 3X Servo Amplifier Data Sheet


Model VT-SR1 servo amplifier
Data Sheet (PDF)
RE 29 979

Model VT-SR1 servo amplifier
Series 1X — For servo valves with electrical position feedback


Electrohydraulic control components designed for the control of 2-stage hydraulic servo valves with electrical position feedback.

Key features:
  • Valve current controller
  • Main spool position controller
  • Dither signal generator
  • Inverse pulsed output stage
  • Oscillator/demodulator
  • Enable hydraulic circuit control using relays
  • Measuring instrument for displaying the servo valve current
  • Optional PID controller with controller switching
Download VT-SR1 Series 1X Servo Amplifier Data Sheet


Model VT-SR2 servo analog amplifier
Data Sheet (PDF)
RE 29 980

Model VT-SR2 servo analog amplifier
Series 1X


Electrohydraulic control component designed for controlling single and two-stage servo-valves without electrical position feedback.

Key features:
  • Regulator for valve current
  • Dither signal generator
  • Push-pull output stage
  • Enable hydraulic circuit control using relays
  • Measuring instrument for displaying servo-valve current
  • Optional PID controller with controller switching
Download VT-SR2 Series 1X Servo Amplifier Data Sheet


Model VT-SR7 electrical flow control servo amplifier
Data Sheet (PDF)
RE 29 993

Model VT-SR7 electrical flow control servo amplifier
Electrical amplifier for flow control with servo valves
Series 1X


Used to control a wide range of HS-type Rexroth axial piston units.

Key features:
  • Oscillator/demodulator for inductive position feedback
  • PID-controller for controlling the swivel angle of the pump
  • Parameters for controller are matched to individual size of axial piston unit
Download VT-SR7 Series 1X Flow Control Servo Amplifier Data Sheet




For more information or to order brochures and catalogs, contact your nearest distributor.

Literature
Intelligent Hydraulics in New Dimensions – RA 09879 (PDF)
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