Overview
The Rexroth VT5003S31R5 proportional amplifier is an electrical control card engineered for precise command and regulation of proportional solenoid valves in hydraulic systems. This amplifier converts low-level analog command signals into controlled current output to modulate valve spool position, enabling proportional flow and pressure control. The VT5003S31R5 variant features specific input/output configuration and control characteristics suited to OEM and retrofit hydraulic applications across manufacturing, packaging, material handling, and mobile equipment.
Key Features
- Proportional solenoid valve control amplification from low-voltage command input signals
- Adjustable ramp function for smooth spool acceleration and deceleration
- Built-in command value scaling and offset correction
- Compact card-module form factor for NG10 manifold cavity installation
- Industrial-grade construction designed for harsh shop-floor environments
- Field-adjustable parameters via potentiometer and DIP switch configuration
Technical Specifications
- Series: VT5003
- Full Part Number: VT5003S31R5
- Product Type: Proportional Valve Amplifier Card
- Application: Hydraulic proportional solenoid valve control
- Connector Type: 16-pin terminal strip or 32-pin male connector (verify specific variant)
- Input Signal: Analog voltage command (0–10V typical range)
- Output: Proportional current to solenoid coils
- Biasing Current: Adjustable (factory default approx. 100 mA)
- Maximum Output Current: Adjustable up to rated solenoid current
- Ramp Function: Adjustable gradient limiting for soft switching
- Control Clock Frequency: 200 Hz (standard)
- Condition: Used, fully functional
Typical Applications
- Proportional pressure-reducing valves in injection molding machines
- Proportional directional control valves for automated assembly lines
- Flow control in packaging and material handling equipment
- Load-sensing proportional valve systems in mobile hydraulic platforms
- Retrofit upgrades for proportional valve systems requiring precise electronic control
Compatibility & Replacements
Compatible With
- Rexroth NG10 (CETOP 05) proportional solenoid valves
- Standard industrial 24 VDC power supplies
- Manual proportional valve spool positioning systems
- Hydraulic manifold cavity installations with terminal strip wiring
Replaces / Drop-In Replacement For
- Other VT5003 series component variants (verify exact model compatibility with system integrator)
- Legacy proportional valve amplifier modules requiring board-level replacement
Works With
- Proportional solenoid coils with 24 VDC rated voltage
- Analog command signal sources: potentiometers, PLC/PAC analog outputs, instrumentation
- External ramp and feedback networks per Rexroth system design
- Industrial proportional valve test equipment and diagnostic tools
