Bosch Rexroth VT-11034-11

Product Overview
The VT-11034 series is an analog/digital valve amplifier card (Euromodul format) designed to drive Bosch Rexroth proportional directional valves and servo valves (e.g., 4WRZ, 4WRTE, DBETR series). It conditions the command signal (±10 V or 4–20 mA) and supplies controlled current to the valve solenoid with ramp, dead-band compensation, and dither (vibration) to reduce stiction.
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Description
Typical Specifications
  • Function:​ Proportional valve driver / amplifier
  • Command Input:​ ±10 V differential or 4–20 mA (selectable)
  • Output Stage:​ PWM current-controlled, typically 0.8 A – 3 A per solenoid (model dependent)
  • Supply Voltage:​ 24 V DC (nominal 18–36 V DC)
  • Dither Frequency:​ Adjustable (typically 50–400 Hz)
  • Ramp Time:​ Adjustable ramp-up / ramp-down
  • Indicators:​ Power LED, Error LED, command-follow LEDs
  • Mounting:​ 32 mm DIN-rail Euromodul (EN 50022) or rack-mount subrack
  • Protection:​ Reverse polarity, short-circuit, thermal
  • Operating Temp.:​ 0 °C to +50 °C (some versions –20 °C to +60 °C)
  • Certification:​ CE, often cULus listed
Usage Notes
  • Set null (zero) and gain potentiometers per valve datasheet
  • Enable dither to prevent valve spool sticking at low flow
  • Ensure proper shielding of command and feedback cables
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