Bosch Rexroth VT-VPCD-1-15 – Digital Controller Card for Proportional Hydraulic Valves

The Bosch Rexroth VT-VPCD-1-15 is a digital valve controller card designed to drive proportional hydraulic valves with stable, repeatable performance. From my experience, this VT series card is a good fit when you need precise current control, smooth ramps, and closed-loop tuning on equipment like presses, test benches, injection molding machines, or retrofit power units. You might notice that the “-15” variant typically denotes a 1.5 A output-current class, which suits a wide range of Rexroth proportional directional or pressure valves.

Order Placement Process and Guarantees

• Warranty period: 365 days
• Delivery time: 1 week for in-stock; no more than one month at the latest
• Payment: 50% advance payment, full payment for delivery
• Express delivery: FedEx, UPS, DHL

Key Features

• Digital current control for proportional valves – Stable coil current with dither and precise ramping helps reduce stick–slip and improves repeatability.
• Closed-loop capability – Typically supports PID-type tuning for spool or process feedback, helping you hit setpoints without overshoot.
• Flexible command inputs – Commonly ±10 V or 4–20 mA command ranges; easy to integrate into existing PLC/drive signals.
• Ramps and limiters – Adjustable acceleration/deceleration and output limiting for smoother machine motion and safer commissioning.
• Robust industrial form factor – Eurocard 3U format with DIN 41612 backplane connector; slots into Rexroth VT subracks.
• Practical setup – Front-panel potentiometers/DIP settings; many sub-variants support a service port for fine tuning during startup.
• Typical 24 V DC supply – Straightforward wiring in standard control cabinets; low heat dissipation in most cases.

Technical Specifications

Related or Supporting Products

• Bosch Rexroth VT-HACD series – Advanced digital axis/valve controllers with richer function sets and fieldbus options. Good when you need recipe management or multi-loop control.
• Bosch Rexroth VT-VRPD / VT-VSPA series – Alternative proportional valve amplifier cards; typically more analog-centric setup if you prefer simple potentiometer tuning.
• Rexroth VT 3002-1X/32 Subrack – Matching 19″ card rack for Eurocard mounting and backplane power distribution.
• Rexroth proportional valves (e.g., 4WRAE, 4WRPEH) – Commonly paired with VT-VPCD for pressure/flow/directional control.
• DIN 41612 connector harnesses – Pre-made cable sets for quick tie-in to PLC I/O and feedback sensors.

Installation & Maintenance

• Cabinet and mounting – Install in a 19″ control cabinet with the VT 3002 subrack. Provide 50–80 mm free space for airflow; avoid mounting above heat sources.
• Power and grounding – Use a clean 24 V DC supply with proper grounding. In many cases, a dedicated 24 V line and star-grounding reduce noise.
• Wiring – Shield analog signals (command/feedback) and ground shields at one end to avoid ground loops. Keep coil leads separate from high-frequency drives.
• Commissioning – Start with conservative ramp times and current limits. Tune dither just enough to overcome stiction. If a service port is present, log parameters for traceability.
• Safety – De-energize hydraulics, depressurize lines, and use lockout/tagout before work. Observe ESD precautions when handling the card.
• Routine care – Quarterly dust cleaning in filtered cabinets; verify terminal tightness; review setpoints. Firmware checks/updates apply only where the sub-variant supports them.
• Troubleshooting – If you see oscillation or hunting, reduce P-gain, increase damping/ramp, and verify sensor scaling. A customer on a press line told us a small ramp increase alone stabilized a jittery cylinder.

Quality & Certifications

• Manufacturer quality system: ISO 9001
• Product compliance: CE; RoHS-conform components in most recent builds
• UL/CSA: Many Rexroth electronic cards are UL Recognized; verify specific file for this sub-variant if required
• Supplier warranty: 365 days from delivery