Bosch Rexroth VT3002-1-2X64G – Analog Amplifier Card for Proportional Valve Control

The Bosch Rexroth VT3002-1-2X64G is a plug-in analog amplifier designed to precisely drive proportional hydraulic valves without integrated position feedback. From my experience, this series is a reliable fit when you want stable current control, clean ramping, and adjustable dither without jumping into a full digital controller. It typically drops into a 19-inch Eurocard subrack and pairs well with NG6/NG10 proportional valves in presses, test benches, and compact hydraulic power units where repeatability and low noise are priorities.

Company’s Order Placement Process and Guarantees

• Warranty: 365 days
• Lead time: 1 week if in stock; no more than 1 month at the latest
• Payment: 50% advance payment, balance due before delivery
• Express options: FedEx, UPS, DHL
• Pre-shipment testing and inspection available upon request

Key Features

• Current-controlled output for proportional valves – Helps ensure linear, repeatable actuation even with coil resistance changes.
• Analog command inputs – Typically supports 0…10 V or ±10 V; 4–20 mA can be realized with an appropriate shunt resistor.
• Built-in ramp generator – Smooth acceleration/deceleration to reduce hydraulic shock and improve process stability.
• Adjustable dither – Reduces static friction in the valve for finer control at low flows or pressures.
• Front-access adjustments and test points – Makes commissioning and service quicker; you might notice calibration is straightforward.
• Eurocard format – Slot-in installation using a DIN 41612 connector for tidy cabinet layouts and fast swaps.
• Robust industrial design – In many cases, the VT3002 series is favored in retrofit projects because it’s predictable and easy to maintain.

Technical Specifications

Note: The VT3002 family includes several current ranges and option codes. The “64G” variant typically indicates a specific configuration for input scaling and ramp/dither setup. If your valve coil resistance or nominal current differs, tell us and we’ll confirm compatibility before you order.

Related or Supporting Products

• Bosch Rexroth VT3002 (other -2X variants) – Same platform with different current ranges or input scaling; a simple swap if your valve specs change.
• Bosch Rexroth VT-HACD-1-1X – Digital controller with parameter storage, diagnostics, and fieldbus options; chosen when recipe control or remote tuning is needed.
• Bosch Rexroth VT-VSPA1-1X – Analog valve amplifier for proportional valves; compact alternative when a different card format is preferred.
• Rexroth Eurocard Subrack / Card Holder (VT 3002 series) – Required backplane and DIN 41612 connector hardware for cabinet mounting.
• Proportional valves (e.g., Rexroth 4WRZ/4WRA series) – Typical companions; confirm nominal current and coil data for correct amplifier match.

Installation & Maintenance

• Panel/cabinet – Install in a 19″ subrack with adequate ventilation. Keep ambient within 0…50 °C and avoid condensation.
• Power & grounding – Use a regulated 24 VDC supply. Star-ground the 0 V reference and keep power/coil returns separate from signal returns when possible.
• Wiring – Use twisted, shielded pairs for analog commands. Route valve coil cables away from sensitive I/O. Bond shields at one end to reduce ground loops.
• Commissioning – Set zero/span, ramp times, and dither under low load first. You might notice small adjustments in dither frequency can significantly improve low-flow stability.
• Safety – Use the enable input and interlocks. De-energize and discharge before service; verify coil current with a meter at the test points.
• Routine maintenance – Periodically check connectors, tighten terminal screws, and clean dust from the subrack. Firmware isn’t applicable on this analog card, but an annual recalibration of zero/span is usually helpful.

Quality & Certifications

• CE compliant
• RoHS compliant
• Manufactured under ISO 9001 quality system
• Manufacturer’s warranty: typically 12 months; we provide 365 days warranty coverage

One thing I appreciate is how the VT3002 keeps commissioning simple: you get the core adjustments that matter, without the learning curve of a full digital platform. If you share your valve part number and coil current, we can double-check whether the “64G” configuration aligns with your application or suggest a drop-in alternative from the same family.