Bosch Rexroth VT3000-36A Analog Amplifier Card – VT3000 Series Proportional Valve Control
When a proportional valve loses its amplifier signal, the consequences on the production floor are immediate and severe: hydraulic axes drift uncontrollably, press forces become unpredictable, and injection molding machines produce out-of-tolerance parts. Entire production lines halt while maintenance teams scramble to diagnose the root cause. The Bosch Rexroth VT3000-36A analog amplifier card is the precision electronic interface that prevents this scenario — converting control system command signals into the exact solenoid currents that keep proportional valves operating within specification, cycle after cycle.
Within the VT3000 Series, the VT3000-36A occupies a critical mid-range position, designed for single-axis proportional directional and pressure/flow control valves requiring analog setpoint input. Bosch Rexroth’s VT3000 amplifier family is one of the most widely deployed proportional valve driver platforms in global industrial hydraulics, found in steel mills, automotive stamping presses, plastics machinery, and marine hydraulic systems across more than 80 countries. The “-36A” variant is specifically engineered for applications demanding stable ramp control, enable logic, and precise current regulation without the complexity of fieldbus-integrated digital amplifiers.
Technical Specifications
- Model / SKU: VT3000-36A (Bosch Rexroth)
- Series: VT3000 Analog Amplifier Series
- Type: Single-axis analog proportional valve amplifier card
- Supply Voltage: 24 V DC (±10%)
- Command Signal Input: ±10 V DC analog setpoint
- Output: Regulated solenoid current for proportional valve coils
- Ramp Function: Adjustable ramp-up / ramp-down via onboard potentiometers
- Enable Input: Digital enable signal (24 V DC logic)
- Dither Frequency: Adjustable for hysteresis compensation
- Form Factor: DIN rail / panel-mount card module
- Operating Temperature: 0 °C to +50 °C
- Weight: Approx. 500 g
- Manufacturer: Bosch Rexroth AG, Germany
Note: All specifications are based on published Bosch Rexroth documentation. Contact us to confirm exact revision-specific parameters for your application.
Key Features & Benefits
- Precise Current Regulation: Closed-loop solenoid current control eliminates valve positioning errors caused by coil resistance variation due to temperature drift.
- Adjustable Ramp Control: Independent ramp-up and ramp-down potentiometers allow smooth acceleration and deceleration of hydraulic actuators, reducing pressure spikes and mechanical shock.
- Dither Adjustment: Built-in dither signal minimizes valve spool stiction, ensuring repeatable response at low command levels.
- Enable Logic: Dedicated enable input allows safe integration with PLC safety circuits and emergency-stop chains without additional relay hardware.
- Plug-and-Play Replacement: Direct form-fit-function replacement for existing VT3000-36A installations — no software reconfiguration required.
- Robust Industrial Design: Designed to Bosch Rexroth’s industrial-grade standards for continuous duty in harsh factory environments.
Industry & Equipment Applications
- Plastics & Rubber Machinery: Injection molding machines, blow molding, extrusion lines requiring precise hydraulic pressure and flow control.
- Metal Forming: Hydraulic presses, stamping machines, forging presses where controlled force ramp-up is critical.
- Steel & Aluminum Processing: Rolling mills, continuous casting machines, tension control systems.
- Marine & Offshore: Deck machinery, steering gear, thruster control systems using proportional hydraulics.
- Mobile Hydraulics: Industrial vehicles and cranes with analog proportional control systems.
- General Industrial Automation: Any hydraulic axis controlled by a proportional directional, pressure, or flow valve paired with a Rexroth VT3000-compatible amplifier.
System Integration & Compatible Parts
The VT3000-36A is designed to interface directly with Bosch Rexroth proportional valves in the 4WRE, 4WRKE, DBEM, and DREM series, among others. It operates within standard Rexroth analog control architectures alongside:
- Rexroth VT-VSPA1 / VT-VSPA2 amplifier cards (alternative axis configurations)
- Rexroth HNC100 / HNC101 axis controllers (digital overlay systems)
- Rexroth VT3002 / VT3006 amplifier variants (same VT3000 family)
- Standard PLC analog output modules (Siemens S7, Allen-Bradley, Mitsubishi, Omron)
- Rexroth power supply units and DIN rail mounting accessories
Contact our technical team to verify compatibility with your specific valve model and control system configuration.
Our Quality Assurance Process
At Konmask.com, every Bosch Rexroth VT3000-36A unit we supply undergoes a structured verification process before shipment:
- Source Verification: Units are sourced from authorized distributors, certified surplus channels, or directly from Bosch Rexroth-approved supply chains.
- Visual & Physical Inspection: Each card is inspected for component integrity, connector condition, and label authenticity.
- Documentation Check: Serial numbers and revision codes are cross-referenced against manufacturer records where available.
- Secure Packaging: Anti-static packaging with moisture barrier and shock-absorbing materials for safe international transit.
- Traceability: Full shipment documentation provided including packing list, commercial invoice, and certificate of conformity upon request.
How to Order
- Submit your inquiry via the Contact / RFQ form on this page or email support@konmask.com.
- Provide your required quantity, delivery timeline, and any specific revision or date-code requirements.
- Our team will respond within 1 business day with availability confirmation and a formal quotation.
- Upon order confirmation, we arrange secure packaging and international shipping with full documentation.
Phone / WhatsApp: +0086 19859288691
Why Choose Konmask.com?
- Industrial Automation Specialists: We focus exclusively on industrial control components — PLC modules, DCS cards, servo drives, and hydraulic electronics — not general electronics.
- Global Supply Network: Access to both new and certified surplus Bosch Rexroth inventory across multiple continents.
- Technical Expertise: Our team includes engineers with hands-on experience in hydraulic control systems, ensuring accurate part identification and application support.
- Fast Response: Inquiry-to-quotation turnaround within 24 hours for standard parts.
- Reliable Logistics: DHL, FedEx, and UPS express shipping with full export documentation for customs clearance.
- After-Sales Support: Technical consultation available post-delivery to assist with installation and commissioning.
Frequently Asked Questions
Q: Is the VT3000-36A still in production by Bosch Rexroth?
A: The VT3000 series has been superseded by newer digital amplifier platforms in Rexroth’s current catalog. However, certified surplus and new-old-stock units remain available. Contact us for current stock status.
Q: Can the VT3000-36A control both solenoids of a double-acting proportional valve?
A: The VT3000-36A is a single-axis amplifier. For double-solenoid proportional directional valves, it drives one solenoid per card. Consult the valve wiring diagram and system schematic to confirm the required configuration.
Q: What is the difference between VT3000-36A and VT3000-36B?
A: Revision letters in Rexroth part numbers denote hardware revisions with minor component or layout changes. Functional compatibility is generally maintained across revisions. Contact us for guidance specific to your application.
Q: Do you provide a warranty?
A: Yes. We offer a standard warranty period on all supplied units. Terms are specified in the quotation. Extended warranty options are available upon request.
Q: Can you supply multiple units for a plant-wide spare parts program?
A: Yes. We regularly supply bulk quantities for MRO spare parts programs. Contact us with your total requirement for volume pricing.
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