DECV servo valve with direct actuation by Voith has been released

The new Voith servo valve DECV (Direct Electronic Copy Valve) is a further development of the Voith copy valve. The single-stage, direct actuation ensures precise control: through impulse response and accuracy, the DECV servo valve responds to demanding drive tasks. With a step response of only seven milliseconds, the DECV belongs to the class of highly dynamic valves. Thanks to the direct actuation, a hysteresis of considerably less than one percent is reached.
The development of the DECV valve was focused on applications with high mechanical loads. The Voith DECV valve is affected very little by oil impurities and can be used with oil of the cleanliness class 19/17/14 as per ISO 4406. This oil quality level can be reached with a common bypass filter system. Comparable servo valves often require higher purity levels, which can necessitate the use of expensive pressure filters. The Voith DECV therefore reduces the system’s operating costs.
The programmable control electronics of the DECV offers all common interfaces, which simplifies integration into existing systems. The HS4-SV2 controller used in the DECV valve contains, in addition to the power amplifier for control, a configurable PLC/CNC. Frequently occurring user cycles are already integrated and can be customized easily via field buses for specific requirements. Diagnostic data can be retrieved via Ethernet from anywhere in the world using the “PunchMaster” software tool belonging to the HS4 controller. This ensures the identification of faulty cycles and the quality assurance during production. An integrated sensor measures the pressure directly at the process connection and ensures extremely accurate and dynamic process monitoring and control. This avoids downtimes, which reduces the costs of repairs and service calls.