Rexroth VT3002-2X/32D – Proportional Valve Amplifier Card | VT 3000 Series
Engineering Background
The Bosch Rexroth VT3002-2X/32D is a plug-in amplifier card engineered for precise closed-loop control of proportional directional and pressure valves in demanding hydraulic systems. Designed within Rexroth’s VT 3000 series platform, this module delivers stable, repeatable electrical drive signals that translate directly into accurate spool positioning and pressure regulation — critical in high-cycle industrial environments where valve response consistency determines machine throughput and product quality.
Product Positioning
Targeted at OEM machine builders, MRO procurement teams, and system integrators operating Rexroth hydraulic platforms, the VT3002-2X/32D serves as the intelligence layer between a PLC command signal and the proportional valve actuator. Its card-format design enables direct insertion into Rexroth VT-HACD rack systems, minimising panel space and simplifying field replacement without rewiring.
Complete Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | VT3002-2X/32D |
| Manufacturer | Bosch Rexroth AG |
| Series | VT 3000 / VT3002 |
| Function | Proportional valve amplifier card (plug-in) |
| Supply Voltage | 24 V DC (±15%) |
| Command Signal Input | ±10 V / 0–10 V / 4–20 mA (configurable) |
| Output Current | Up to 2.5 A (solenoid drive) |
| Enable Function | External enable input (24 V logic) |
| Ramp Function | Adjustable ramp-up / ramp-down (potentiometer) |
| Dither Frequency | Adjustable (typ. 50–200 Hz) |
| Gain Adjustment | Via on-board potentiometer |
| Zero Offset | Adjustable ±10% |
| Operating Temperature | 0 °C to +50 °C |
| Storage Temperature | -25 °C to +70 °C |
| Protection Class | IP20 (card in rack) |
| Form Factor | Eurocard plug-in (VT-HACD rack compatible) |
| Weight | ~8.8 kg (packaged) |
| Compliance | CE marked; RoHS compliant |
Proven Application Environments
- Injection Moulding Machines – Precise pressure and flow control during injection and holding phases via proportional valves driven by VT3002-2X/32D.
- Hydraulic Press Systems – Smooth force ramp-up and position-controlled pressing cycles with adjustable ramp functions.
- Steel Mill Rolling Equipment – High-cycle proportional valve actuation for roll gap and tension control in continuous casting lines.
- Marine & Offshore Hydraulics – Stable valve drive in vibration-prone environments; dither adjustment compensates for valve hysteresis.
- Mobile Machinery (Stationary Control Cabinets) – Crane, excavator, and loader control systems using Rexroth proportional valve platforms.
- Test Bench & Simulation Rigs – Repeatable command-to-output linearity for fatigue testing and materials characterisation.
Engineering Advantages
- Drop-in Replacement – Direct plug-in compatibility with existing VT-HACD rack infrastructure; no panel rewiring required during MRO replacement.
- Flexible Signal Interface – Accepts voltage (±10 V, 0–10 V) and current (4–20 mA) command signals, accommodating diverse PLC output configurations.
- On-board Tuning – Gain, zero offset, ramp, and dither adjustable via accessible potentiometers; no external programming tool required for commissioning.
- Enable Logic – Dedicated 24 V enable input allows safe integration with machine safety circuits and E-stop chains.
- Proven Platform Longevity – VT 3000 series has decades of field deployment across global industrial installations; extensive spare-parts ecosystem.
- Rexroth OEM Pedigree – Manufactured to Bosch Rexroth quality standards with full traceability documentation available on request.
System Architecture & Signal Flow
The VT3002-2X/32D operates as the analogue interface layer in a proportional hydraulic control loop:
- PLC / Controller outputs an analogue command signal (±10 V or 4–20 mA) representing the desired valve position or pressure setpoint.
- VT3002-2X/32D Card receives the command, applies gain scaling, zero offset correction, and ramp shaping, then generates a PWM solenoid drive current with superimposed dither.
- Proportional Valve Solenoid converts the drive current into spool displacement or pilot pressure, modulating hydraulic flow or pressure proportionally.
- Actuator / Process responds; feedback (position, pressure, or flow) is returned to the PLC for closed-loop correction.
The card slots into a Rexroth VT-HACD amplifier rack, which provides backplane power distribution and signal routing — enabling multi-axis systems with a single rack assembly.
Sourcing & Quality Verification
- Origin: Sourced from authorised Rexroth distribution channels and verified MRO surplus with full traceability.
- Inspection Protocol: Each unit undergoes visual inspection, label verification (part number, date code, revision suffix), and functional power-on check prior to dispatch.
- Packaging: Anti-static ESD bag + foam-lined carton; humidity indicator card included for long-haul shipments.
- Documentation: Original Rexroth data sheet and, where available, factory test certificate supplied on request.
- Warranty: 12-month Konmask operational warranty covering manufacturing defects under normal operating conditions.
Procurement Process
- Confirm Part Number – Verify the full suffix (VT3002-2X/32D) against your existing card label or Rexroth BOM. Suffix variants indicate revision level and output configuration.
- Request Quote – Contact [email protected] or call +0086 19859288691 for volume pricing, lead time, and availability confirmation.
- Place Order – Purchase directly via this listing or via PO for B2B accounts. Net-30 terms available for qualified buyers.
- Shipping – DHL Express / FedEx International Priority standard; sea freight consolidation available for bulk orders. Export documentation (CO, packing list, commercial invoice) provided.
- Incoming Inspection – Recommend verifying part number label, revision suffix, and connector condition upon receipt before installation.
Technical FAQ
Q: Is the VT3002-2X/32D compatible with all Rexroth proportional valves?
A: It is designed for Rexroth proportional directional and pressure valves requiring a single solenoid or dual solenoid drive up to 2.5 A. Always cross-reference the valve’s amplifier card specification in the Rexroth valve data sheet before installation.
Q: Can this card be used without a VT-HACD rack?
A: The VT3002-2X/32D is a Eurocard plug-in module and requires a compatible Rexroth VT-HACD amplifier rack for power supply and signal connectivity. Standalone wiring harness adapters exist but are not recommended for permanent installations.
Q: What is the difference between the 2X and earlier revisions?
A: The “2X” suffix denotes the second-generation revision series, incorporating updated component tolerances and improved EMC performance versus earlier -1X variants. It is generally backward-compatible in the same rack slot.
Q: How do I set the dither frequency?
A: Dither frequency is adjusted via the on-board potentiometer labelled “DITH” (or equivalent per revision). Start at the valve manufacturer’s recommended dither frequency (typically 100 Hz for most Rexroth proportional valves) and fine-tune to minimise hysteresis without inducing audible noise.
Q: Do you provide a test report?
A: A functional power-on test report is available on request. Factory OEM test certificates are provided where available from the original supply chain documentation.
Q: What is the lead time?
A: In-stock units ship within 1–2 business days. For out-of-stock enquiries, typical sourcing lead time is 2–4 weeks. Contact us to confirm current availability.
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Contact: [email protected] | +0086 19859288691
