Additional Product Information
When the voltage stays above the preset pick-up voltage (18-30V DC), then the unit is energized. If the voltage goes below the preset drop out for greater duration than the drop-out time delay, then it de-energizes. Whether the VAKP024D operates for undervoltage or overvoltage protection is subject to the kind of output contacts being used.
Overvoltage protection makes use of a normally closed contact. The voltage needs to stay below the preset pick-up voltage for the load to be energized while the relay itself remains de-energized. If the voltage goes above the pick-up, the reverse happens, until voltage goes below the preset drop-out.
Undervoltage monitoring requires a normally open contact. The load stays on and the relay is energized if the voltage stays above the preset pick-up. Voltage going below the preset drop-out de-energizes both the load and the relay.