Rexroth VT-VPCD-1-18/V0/1-0-1 Digital Control Electronics

• Brand
  Rexroth
• Model
  VT-VPCD-1-18/V0/1-0-1
• Product Name
  Digital Control Electronics / Hydraulic Proportional Amplifier Card
• Country of Origin
  Germany
• HS Code
  8538909100
• Dimensions
  20 mm x 233 mm x 160 mm
• Weight
  0.45 kg
• Operating Temperature
  0 °C to +50 °C
• Storage Temperature
  -25 °C to +70 °C
• Power Supply
  24VDC
• Warranty
  12 month
• Product Status
  New and original

Rexroth VT-VPCD-1-18/V0/1-0-1 Technical Specifications and General Information

Electrical Input Specifications

Nominal Supply Voltage: DC 24 V

Permissible Supply Voltage Window: DC 21 V minimum to DC 30 V maximum (Upper and lower safety cutoff thresholds).

Current Consumption: 3.5 Amperes maximum under full inductive load excitation.

Analog Command Inputs: Configurable voltage or current inputs (Typically ±10 V or 4–20 mA differential loops) used to feed pressure, power, and swivel angle target baselines.

Feedback Sensing Channels: Highly sensitive interfaces designed for inductive positional measuring systems to continually track the internal valve spool position and the pump’s physical swivel angle.

Digital Inputs: Multi-channel parameter-call inputs designed to switch between predefined ramp profiles and variable system parameters.

Electrical Output Specifications

Valve Output Stage: Clocked, pulse-width-modulated (PWM) flow-controlled output block engineered to drive proportional solenoid coils directly without overheating.

Analog Output Monitor Voltage: ±10 V reference signals for external tracking, troubleshooting, or linking data plots to external PLC registers.

Controller Scan Time: High-speed internal execution speed averaging 2 milliseconds for the complete loop computation.

Serial Diagnostic Interface: Standard on-board RS-232 serial connection dedicated to localized PC link-ups via Rexroth's BODAC software application.

Rexroth VT-VPCD-1-18/V0/1-0-1 Comprehensive Wiring and Installation Steps

All installation and field terminal activities must happen when the main industrial machinery is completely depressurized, hydraulic accumulators are discharged, and electrical cabinet disconnects are safely locked out.

Subrack and Guide Rail Preparation: Locate the specific Eurocard slot mapped within the technical subrack cabinet. Verify that the 64-pin mating receptacle on the backplane is clean and free of metal fragments.

Field Instrument Wiring (Backplane-side): Terminate the incoming shielded cables onto the backplane connector terminals. Route the inductive transducers measuring the pump swivel angle and the proportional valve feedback to their respective differential analog terminals.

Cable Shielding Execution: Ground all incoming instrumentation cable braids firmly onto a broad grounding copper rail using metallic shield clamps right before entering the subrack frame. Do not daisy-chain the shields to avoid creating internal ground loops.

Connecting Solenoid Valve Drivers: Wire the pulse-width-modulated (PWM) output pins directly to the proportional valve coils. Use wire cross-sections rating at least 1.5 mm  to accommodate the peak 3.5 A output current sweeps without inducing critical voltage drops.

Main Power Supply Connection: Wire the smoothed DC 24 V auxiliary power feed directly to the designated power supply pins on the backplane. Ensure an external, fast-acting fuse rated for 4 A is placed inline to defend the internal multi-layer PCB circuits against catastrophic external shorts.

Card Insertion and Locking: Slide the VT-VPCD card smoothly along the plastic subrack guides. Firmly push the front faceplate panel inward so that the 64-pin DIN 41612 male connector slots entirely into the backplane housing. Hand-tighten the upper and lower panel screws to ground the module faceplate to the rack frame and secure it against system resonance.

Commissioning Hookup: Connect a laptop with the Rexroth BODAC software suite installed into the front panel RS-232 serial socket. Turn on the 24V supply to complete the board firmware validation, read live error logs, and match parameters before initializing the main hydraulic line pump motors.

Rexroth VT-VPCD-1-18/V0/1-0-1 Key Product Advantages

Integrated Microcontroller Intelligence: Removes the analog drift typical of older resistor/capacitor tuning pots by storing all operational boundaries digitally within a flash-based microprocessor.

Multifunctional Regulatory Loops: Combines pump stroke tracking, line pressure control (supporting one sensor for open-circuits or two for closed-circuit loops), and maximum mechanical power tracking onto a single card layer.

BODAC Software Configurable: System engineers can perform complex calibrations, loop damping tweaks, error tracking, and custom ramp profiling entirely over a clean software wizard via the RS-232 port.

Advanced Safety Interlocking: Detects wire breaks along feedback sensors or internal power drops, instantly putting the driver outputs into a safe, neutral state to protect hydraulic components from running over-pressure.

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  Rexroth VT-VPCD-1-18/V0/1-0-1
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