Device Sockets

Device Sockets with Protective Circuit:

Solenoid coils present an inductive load to the power supply, meaning the current and voltage are interdependent. The voltage across the coil depends on how rapidly the coil current changes. For AC coils, this gives rise to the reactive impedance (XL).

During switching operations—whether with AC or DC—rapid current changes from turning the solenoid coil on or off can generate voltage spikes across the coil. These spikes can damage electronic components and negatively impact the surrounding electronics.

To prevent this, valve connectors with integrated protective circuits are available. These protective elements—such as a flyback diode, voltage-dependent resistor (VDR), or TVS diode—suppress these voltage peaks and protect connected electronics.

SVS offers valve connectors with and without integrated protective circuits, depending on your application needs.

Device Sockets with Power Reduction:

In solenoid valves—especially normally closed (NC) types—the highest electromagnetic force is required to lift the magnetic core against the opposing spring and compressive forces. Once the core reaches the pole face, only enough magnetic force is needed to hold it in place against the spring.

To minimize energy consumption and heat generation in DC solenoid coils, device connectors with integrated power reduction are available. These connectors initially supply the full nominal voltage for approximately 600 milliseconds to ensure reliable actuation. After this, the voltage is reduced to about 60% of the nominal value via pulse-width modulation (PWM).

This reduced voltage is still sufficient to hold the core in position while cutting power consumption by roughly 40%, significantly reducing heat buildup in the coil.