DETECTOR ARRANGEMENT IN AN ELECTRIC ARRANGEMENT WITH STAND BY SHUT DOWN

• US 20140285011A1
• Filed: 10/18/2012
• Published: 09/25/2014
• Est. Priority Date: 11/15/2011
• Status: Active Grant

• Current Assignee: Isaberg Rapid AB (ACCO Brands Incorporated)
• Original Assignee: Isaberg Rapid AB (ACCO Brands Incorporated)
• Inventors: Edvardsson, Arne
• Granted Patent: US 9,515,521 B2
• Time in Patent Office: Days
• US Class Current: 307/29
• CPC Class Codes: H01H 9/167 Circuits for remote indication
• CPC Class Codes: H02J 11/00 Circuit arrangements for providing service supply to auxiliaries of stations in which electric power is generated, distributed or converted
• CPC Class Codes: H02P 29/00 Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors arrangements for starting electric motors H02P1/00; arrangements for stopping or slowing electric motors H02P3/00; control of motors that can be connected to two or more different electric power supplies H02P4/00; regulating or controlling the speed or torque of two or more electric motors H02P5/00; vector control H02P21/00

Abstract

A detector arrangement included in an electric circuit arrangement which includes a stand by shut down and which comprises a first power supply (1) which is connected to mains voltage and which converts the mains voltage to a first voltage adapted for an electric motor (5) included in the electric circuit, the first power supply being, by means of a supply conductor (3) across a switch (4) by which the electric circuit may be closed or opened, is connected with its positive pole (2) to said motor, and the motor is, by means of a return conductor (6), connected to the negative pole (7) of said first power supply, as well as a control circuit (15) which, on the one hand, is connected via a first signal conductor (16), to the first power supply and, on the other hand, to an included second power supply (1 1) which feeds the control circuit with a second voltage which is substantially lower than the first voltage and which, with its negative pole, is connected to the return conductor, and detector means for registering the state of the switch, said means being connected to the control circuit for control thereof by the first power supply between the energised state in which the switch is in the on position and in which the power supply emits voltage, and a shut down state in which the switch is in the off position and in which the power supply emits no voltage where the detector arrangement includes a resistor (17) and a first diode (18) which are connected in series and are included in a crosswire (8) which runs between the positive pole of the second power supply and the supply conductor, and where there is connected, between the diode and the resistor, a second signal conductor (19) which is connected to the control circuit (15).

Claims

1. A detector arrangement included in an electric circuit arrangement which includes a stand by shut down and which comprises a first power supply (1) which is connected to mains voltage and which converts the mains voltage to a first voltage adapted for an electric motor (5) included in the electric circuit, the first power supply being, by means of a supply conductor (3) across a switch (4) by which the electric circuit may be closed or opened, is connected with its positive pole (2) to said motor, and the motor is, by means of a return conductor (6), connected to the negative pole (7) of said first power supply, as well as a control circuit (15) which, on the one hand, is connected via a first signal conductor (16), to the first power supply and, on the other hand, to an included second power supply (11) which feeds the control circuit with a second voltage which is substantially lower than the first voltage and which, with its negative pole, is connected to the return conductor, and detector means for registering the state of the switch, said means being connected to the control circuit for control thereof and of the first power supply between the energised state in which the switch is in the on position and in which the power supply emits voltage, and a shut down state in which the switch is in the off position and in which the power supply emits no voltage characterised in that the detector arrangement includes a resistor (17) and a first diode (18) which are connected in series and are included in a crosswire (8) which runs between the positive pole of the second power supply and the supply conductor, and in that there is connected, between the diode and the resistor, a second signal conductor (19) which is connected to the control circuit (15).

2. The detector arrangement as claimed in claim 1, characterised in that the resistor (17) is coupled closer to the second power supply (11) than the first diode (18), and where the diode is coupled with its anode towards the resistor.

3. The detector arrangement as claimed in claim 2, characterised in that a second diode (20) is coupled to the supply conductor (3) ahead of the coupling (9) of the crosswire (8) to the supply conductor (3), the second diode being coupled with its anode in a direction towards the power supply.