Faber‑com VPP3 PWM Potentiometer / PWM Regulator

Overview

The VPP3 is a family of panel-mounted PWM regulators designed to drive proportional solenoid valves. These regulators use a potentiometer embedded on the control panel as the reference input, converting the wiper position into a PWM output current to control valve coils. The VPP3 is suitable for single or dual (double‑solenoid) valve control.

Key Specifications

Parameter	Typical Range / Value
Supply Voltage	10 – 30 VDC
PWM Output Current Range	50 mA to 2500 mA
PWM Frequency (Adjustable)	50, 60, 70, 85, 100, 125, 150, 200, 250, 300 Hz
Temperature Range	–40 °C to +70 °C
Connector / Cabling	20 cm cable, Deutsch DT04‑8 connector
Ingress Protection	VPP3‑S: IP64 (optional IP67) / VPP3‑D: IP67
Digital Inputs / Outputs	Two multi‑purpose pins (configurable as digital inputs or digital outputs)
Output Curve Types	Linear or parabolic (selectable)

Features & Functional Capabilities

• Adjustable Minimum / Maximum Current (Offset & Gain): You can set the lower and upper bounds of coil current, tuning sensitivity and full-scale current.
• Adjustable Rise / Fall Ramps: Configurable ramp up/down times (from 0 to ~25 s, in 0.1 s steps) allow smooth transitions and avoid hydraulic shocks or abrupt movements.
• Selectable Output Curve Shape: Option between linear or parabolic response curves for finer control options.
• Protection & Feedback Control: The circuit includes feedback to stabilize output current regardless of supply voltage or temperature variation. It also offers short‑circuit protection on outputs.
• Programming & Configuration: The VPP3’s internal parameters (current limits, ramps, frequency, I/O functions) can be programmed via a serial interface (SepSim software and AISR serial adapter).
• Multi‑Purpose Pins: Two configurable pins that may act as digital inputs (enable/disable outputs, speed selection) or outputs (e.g. dump valve control, directional outputs, threshold outputs).

Versions & Ordering Options

The VPP3 family includes multiple variants depending on valve type and voltage:

• VPP3‑S (single solenoid) and VPP3‑D (double solenoid) configurations
• Versions for different coil voltages (e.g. 12V, 24V) and factory calibration presets 1

Use Cases & Application Notes

• Panel Mount Integration: The VPP3 is mounted directly into the operator panel, making it ideal for control interfaces in machinery and mobile equipment.
• Hydraulic Control Systems: Frequently used to drive proportional hydraulic valves in cranes, aerial platforms, telehandlers, and other heavy machinery.
• Fine Tuning: The ability to set offsets, gain, ramp times, and frequency gives flexibility to adapt to specific valve characteristics and system dynamics.
• Diagnostics / Safety: The multi‑purpose I/O pins can be leveraged for system interlocks, fault signaling, or mode control.