Relay controller for defined hold current for a relay
OwnerMichael Lenzinventor
Life of this patent
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Abstract
The invention relates to a relay controller for controlling an excitation current of a relay, wherein the relay controller is designed, upon the energization of the relay by means of a switch, to control the excitation current through the excitation winding of the relay in such a way that through the excitation winding there flows firstly a pull-in current and, after a pull-in time has elapsed, through the excitation winding there flows a holding current that is lower than the pull-in current, and wherein the relay controller is designed, upon the switching-off of the relay by means of the switch, to feed a commutation current that flows through the excitation winding to the commutation device through the first terminal and through the second terminal of the relay controller.
Claims24
A relay controller for controlling an excitation current of a relay, comprising:
- a first terminal for connection to an excitation winding of the relay,
- a second terminal, for connection to a commutation device of the relay,
- a sixth terminal,
- wherein the relay controller is designed, upon the energization of the relay by means of a switch, to control the excitation current through the excitation winding of the relay in such a way that through the excitation winding there flows firstly a pull-in current and, after a pull-in time has elapsed, there flows a holding current that is lower than the pull-in current,
- and wherein the relay controller is designed, upon the switching-off of the relay by means of the switch, to feed a commutation current that flows through the excitation winding to the commutation device through the first terminal and through the second terminal of the relay controller,
- wherein the holding current can be determined by means of a circuit connected to the sixth terminal.
A relay device for switching loads, comprising:
- a relay,
- a relay controller for controlling the relay, comprising at least two terminals,
- a commutation device, wherein the commutation device is coupled in parallel with the excitation winding of the relay via the first terminal and the second terminal of the relay controller,
- a switch,
- wherein the excitation winding of the relay, the relay controller and the switch are coupled in series.
Dependencies are inferred from the claim text.