Proportional Hydraulic Valve Control Solution – Bosch Rexroth VT-VSPD-1-21/V0/0-0-1 | VT-VSPD Series
The Bosch Rexroth VT-VSPD-1-21/V0/0-0-1 is a digital amplifier PCBA card engineered for precise electronic control of proportional hydraulic valves. As part of Rexroth’s proven VT-VSPD series, this card delivers stable, programmable signal conditioning between PLC/CNC controllers and proportional directional or pressure valves — enabling closed-loop hydraulic motion control in demanding industrial environments.
Where This Product Is Used
This digital amplifier card is specified by hydraulic system engineers and OEM machine builders across the following applications:
- Hydraulic Press & Forming Machines – Precise ram speed and pressure profiling via proportional valve control
- Injection Molding Machines – Closed-loop control of injection speed, holding pressure, and back pressure stages
- CNC Machining Centers – Hydraulic clamping, tool-change cylinder, and steady-rest control
- Die Casting & Forging Equipment – High-cycle proportional valve actuation with fast response requirements
- Steel Mill & Rolling Mill Hydraulics – Position and force control in heavy-duty hydraulic actuators
- Marine & Offshore Hydraulic Systems – Proportional control in winch, steering, and stabilizer circuits
- Test Bench & Simulation Rigs – Programmable flow/pressure profiles for fatigue and endurance testing
Technical Specifications
| Part Number | VT-VSPD-1-21/V0/0-0-1 |
| Manufacturer | Bosch Rexroth AG |
| Series | VT-VSPD |
| Product Type | Digital Amplifier PCBA Card |
| Function | Electronic amplifier for proportional hydraulic valves |
| Signal Input | Analog command signal (±10 V / 0–10 V, PLC compatible) |
| Output | Proportional solenoid driver current output |
| Supply Voltage | 24 V DC (nominal) |
| Form Factor | Plug-in PCBA card (Euro card format) |
| Weight | Approx. 260 g |
| Compatible Valves | Rexroth VT-VSPD-compatible proportional directional & pressure valves |
| Condition | New / Surplus / Refurbished (specify on inquiry) |
Why Engineers Specify This Model
- Digital Signal Processing – Eliminates analog drift; stable ramp, dither, and gain parameters stored digitally
- Direct PLC Integration – Standard ±10 V analog input interfaces seamlessly with Siemens, Allen-Bradley, Mitsubishi, and Beckhoff PLCs
- Ramp & Dither Control – Configurable acceleration/deceleration ramps reduce hydraulic shock and extend valve life
- Compact Euro Card Format – Drop-in replacement for existing VT-VSPD slots; no panel modification required
- OEM-Proven Reliability – Deployed in thousands of Rexroth hydraulic systems globally across 20+ years of field service
Complete System Bill of Materials
For a complete proportional valve control loop using this amplifier card, engineers typically specify:
- Bosch Rexroth VT-VSPD-1-21/V0/0-0-1 – Digital Amplifier Card (this item)
- Rexroth VT-VSPD amplifier rack / housing (if not already installed)
- Rexroth 4WRPH / 4WRKE series proportional directional control valve
- Rexroth DBEM / DREM series proportional pressure relief valve (if pressure control)
- 24 V DC DIN-rail power supply (min. 5 A recommended)
- Shielded signal cable (±10 V command, encoder feedback)
- PLC analog output module (e.g., Siemens SM 332, B&R X20AO)
Compliance & Industry Standards
- CE Marking – Compliant with EU Machinery Directive and EMC Directive
- RoHS – Manufactured in accordance with RoHS 2 (2011/65/EU) requirements
- ISO 4413 – Designed for integration into hydraulic systems per ISO 4413 safety guidelines
- UL Recognition – Bosch Rexroth factory components carry UL recognition for North American markets
Quality Assurance & Sourcing
Konmask.com sources Bosch Rexroth VT-VSPD amplifier cards through authorized industrial distribution channels and verified surplus inventory networks. Every unit undergoes:
- Visual inspection for PCB damage, component integrity, and connector condition
- Label and part number verification against Rexroth documentation
- Functional bench test (where applicable) prior to shipment
- Anti-static packaging with humidity indicator card
Traceability documentation and test reports available upon request for MRO and OEM procurement teams.
How to Source This Part
Submit your inquiry through Konmask.com/contact or email [email protected] with your required quantity, delivery timeline, and any cross-reference part numbers. Our technical team responds within 1 business day.
- MOQ: 1 piece
- Lead Time: In-stock items ship within 3–5 business days; sourced items 7–21 days
- Payment: T/T, PayPal, credit card (via Shopify Payments)
- Shipping: DHL Express, FedEx International Priority, sea freight for bulk orders
Application-Specific FAQ
Q: Is the VT-VSPD-1-21/V0/0-0-1 compatible with all Rexroth proportional valves?
A: It is designed for Rexroth VT-VSPD-series compatible valves. Always verify the valve’s solenoid current rating and signal interface against the amplifier datasheet before installation.
Q: Can this card be used as a direct replacement for an older VT-VSPA amplifier?
A: The VT-VSPD series is the digital successor to the analog VT-VSPA series. Physical form factor is compatible, but parameter re-commissioning via Rexroth BODAC software is required.
Q: Do you provide the Rexroth commissioning software (BODAC)?
A: We can advise on software sourcing. Contact our team for guidance on obtaining the correct BODAC version for your firmware.
Q: What is the warranty on this part?
A: New units carry the standard Bosch Rexroth manufacturer warranty. Surplus/refurbished units carry a 90-day Konmask functional warranty. Details provided at time of quotation.
Q: Can you supply multiple units for a production line retrofit?
A: Yes. We handle both single-unit MRO replacements and multi-unit OEM/retrofit orders. Contact us for volume pricing.
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