Abstract: The invention relates to an elevator comprising at least one elevator car moved by at least one elevator motor, which elevator motor is driven by a frequency converter controlled by a control device of the elevator, the frequency converter comprising a rectifier bridge, an inverter bridge and a DC link connected in-between, the inverter bridge being connected to the elevator motor and the rectifier bridge being connected to AC mains via three phase supply lines comprising an LCL-filter and a mains switch.

Abstract: A drive device of an elevator includes a frequency converter to be connected to a public AC supply network and an elevator motor. The frequency converter includes a network rectifier configured to be connected to the AC supply network, a motor bridge to be connected to the elevator motor and a DC intermediate circuit located between the network rectifier and the motor bridge. The motor bridge is controlled by a control circuit which feeds the motor bridge with control pulses to regulate the motor speed. The drive device further includes at least one drive prevention circuit connected between the control circuit and the motor bridge. The drive prevention circuit is configured to obtain a safety signal from an elevator safety circuit includes two separate safety input circuits each configured to be connected to the elevator safety circuit to receive a safety signal.

Abstract: An elevator includes an elevator motor; a motor drive for the elevator motor having a frequency converter including a rectifier bridge, an inverter bridge and a DC link in between, which frequency converter is controlled via a controller, the rectifier bridge being connected to AC mains via three feed lines including chokes, and the rectifier bridge being realised via controllable semiconductor switches; a contactor being located between the feed lines and AC mains; and a backup power supply at least for emergency drive operation. An emergency control is associated with the motor drive, which emergency control is configured to perform an automatic emergency drive. The emergency control is connected to a manual drive circuit having a manual drive switch for a manual rescue drive.

Abstract: An elevator includes an elevator motor, a motor drive for the elevator motor having a frequency converter including a rectifier bridge, an inverter bridge and a DC link in between, which frequency converter is controlled via a controller, the rectifier bridge being connected to AC mains via three feed lines including chokes, and the rectifier bridge being realised via controllable semiconductor switches, an isolation relay being located between the feed lines and AC mains, a backup power supply at least for emergency drive operation, an emergency control for performing an automatic emergency drive, the backup power supply is via a first switch connectable with only a first of the feed lines.

Abstract: An elevator includes an elevator motor; a motor drive for the elevator motor having a frequency converter comprising a rectifier bridge, an inverter bridge and a DC link in between, which frequency converter is controlled via a controller, the rectifier bridge being connected to AC mains via three feed lines comprising chokes, and the rectifier bridge being realised via controllable semiconductor switches; a contactor being located between the feed lines and AC mains; a backup power supply at least for emergency drive operation; and an emergency control for performing an automatic emergency drive. The backup power supply is via a first switch connectable with only a first of said feed lines.

Abstract: A power controller with a cable connected remote controlling device configured to transmit a pulsed instruction signal according to a predetermined signal pattern to the power controller. The power controller determines if the instruction signal corresponds with a predetermined signal pattern. If the instruction signal corresponds with a predetermined signal pattern, the controller passes the instruction signal to switches that control power supply of an electric device.

Abstract: The invention relates to a battery pack, comprising a plurality of battery cells arranged consecutively. Each of said battery cells comprise a positive and a negative terminal on opposite sides of the battery cell, the battery cells being electrically connected in series with each other, wherein the terminals of the plurality of battery cells are arranged on two opposite sides of the battery pack such that positive and negative terminals of the consecutive battery cells are on both sides of the battery pack by turns next to each other. The battery pack further comprises a first and a second printed circuit board portion arranged on said two opposite sides of the battery pack, respectively. The first and the second printed circuit board portions comprise connection interfaces arranged next to the terminals of the battery cells. The first and the second printed circuit board portions comprise signal traces connected to the terminals of the battery cells via the connection interfaces.

Abstract: A rescue apparatus for an elevator includes a brake control unit having input terminals for connecting to a power supply, output terminals for connecting to a magnetizing coil of an electromagnetic brake, at least one controllable brake opening switch associated with at least one of the input terminals and adapted, in an open state, to prevent supply of current from the power supply to the magnetizing coil and, in a closed state, to allow supply of current from the power supply to the magnetizing coil, a control cable including one or more control signal wires and a remote control panel for operating the at least one brake opening switch, the remote control panel being coupled via the control cable to the brake control unit.

Abstract: The invention relates to an elevator comprising an elevator motor and an elevator drive comprising a backup power supply and an emergency drive module to enable release of trapped passengers in case of a power fault, based on the energy of the backup power supply, whereby the elevator drive comprises a drive housing and the backup power supply is located in a separate backup module which is releasably supported in a mounting position at the drive housing of the elevator drive, which backup module comprises an insulated backup module housing and an electric interface which connects to a complementary interface of the elevator drive located at the drive housing.

Abstract: A transport conveyor drive having a rectifier and an inverter which are connected via a DC link, whereby the inverter comprises power switches for suppling electric power to an transport conveyor motor is disclosed. The transport convey drive comprises a motor controller for controlling the power switches of the inverter which is configured to produce control pulses in the control poles of the power switches, at least one safety signal interface, which is adapted to receive safety signals from a safety controller of the transport conveyor, and a brake control circuit having an output for supplying power to a brake coil of an electromagnetic brake, wherein at least one STO circuit is connected between the motor controller and each of the power switches of at least one half bridge of the inverter, the STO circuit being configured to transfer/cut the control pulses to the power switches.

Abstract: The invention relates to an energizing circuit of at least one magnetizing coil of an operational brake, the energizing circuit being configured for energizing the magnetizing coil, which energizing circuit comprises a rectifying bridge connected to the supply network, the output terminals of the rectifying bridge being connectable/connected to the input points of the magnetizing coil, characterized in that the energizing circuit comprises at least one reduced voltage circuit or external DC supply, whose outputs are connectable via to the to the input points of the magnetizing coil via a controllable operation switch of the energizing circuit. The patent application also comprises claims for a passenger conveyor and for a method.

Abstract: The invention concerns a rescue apparatus, an elevator as well as a retrofit kit. The rescue apparatus comprises a brake control unit having input terminals for connecting to a power supply, output terminals for connecting to a magnetizing coil of an electromagnetic brake, at least one controllable brake opening switch associated with at least one of the input terminals and adapted, in an open state, to prevent supply of current from the power supply to the magnetizing coil and, in a closed state, to allow supply of current from the power supply to the magnetizing coil. The rescue apparatus further comprises a control cable comprising one or more control signal wires and a remote control panel coupled via the control cable to the brake control unit.

Abstract: The arrangement comprises a drive driving an electric motor, a contactor and a control circuit connecting a control coil of the contactor to a power supply. The control circuit comprises a manual control part provided with a manually operated first switch, and an electronical control part provided with an electronically operated second switch and a processor controlling the second switch. The first switch and the second switch are connected in series in the control circuit with the power supply and the control coil of the contactor so that de-energization of the control coil of the contactor may be done either by the first switch or by the second switch.

Abstract: A motor drive includes a rectifier bridge, which rectifier bridge is connected to an DC link, which is connected to an inverter bridge having phase outputs configured to be connected to an elevator motor, as well as a drive control controlling the semiconductor switches of the inverter bridge. The inverter bridge has upper semiconductor switches of the upper side connected to plus of the DC link and lower semiconductor switches of the lower side connected to minus of the DC link, the upper semiconductor switches are semiconductor switches without desaturation- and/or over-current protection whereas the lower semiconductor switches comprise a desaturation- and/or over-current protection, or vice versa.

Abstract: The invention refers to an elevator brake controller, comprising a brake supply circuit comprising a rectifier with a mains input side and a DC link output side, whereby in the mains input side and/or in the DC link output side at least one fuse is connected, a brake control circuit with at least one brake coil of an elevator brake, which brake coil is connected in series with a control switch configured to be controlled by an elevator control, which series connection of brake coil and control switch is connected to the DC link, a brake safety circuit which is connected between the brake supply circuit and the brake control circuit, which brake safety circuit comprises a first safety switch being connected in series with the brake coil as well as a second safety switch which is connected in parallel to the brake coil, whereby the first and second safety switches are configured to be controlled by an elevator safety circuit.

Abstract: A motor drive includes a rectifier bridge for connection with mains, a converter bridge configured to connect with an elevator motor and an intermediate DC circuit in-between. A capacitor and/or battery is connected between positive and negative branches of the intermediate DC circuit. At the mains side of the rectifier bridge a controlled main relay with contacts are configured to connect or disconnect the rectifier bridge with the corresponding mains phase. The motor drive comprises a charging circuit which comprises a charging switch connected with a current limiting component. The motor drive comprises a voltage sensor between positive and negative branches of the intermediate DC circuit. The voltage sensor is connected to a circuit comprising a reference value and a comparator. The evaluation circuit is configured to compare the actual sensor signal of the voltage sensor to the reference value and to operate the main relay based on the comparison.

Abstract: An elevator includes an elevator motor, a motor drive for the elevator motor having a frequency converter including a rectifier bridge, an inverter bridge and a DC link in between, which frequency converter is controlled via a controller, the rectifier bridge being connected to AC mains via three feed lines including chokes, and the rectifier bridge being realised via controllable semiconductor switches, an isolation relay being located between the feed lines and AC mains, a backup power supply at least for emergency drive operation, an emergency control for performing an automatic emergency drive, the backup power supply is via a first switch connectable with only a first of the feed lines.

Abstract: The invention relates to an elevator comprising at least one elevator car moved by at least one elevator motor, which elevator motor is driven by a frequency converter controlled by a control device of the elevator, the frequency converter comprising a rectifier bridge, an inverter bridge and a DC link connected in-between, the inverter bridge being connected to the elevator motor and the rectifier bridge being connected to AC mains via three phase supply lines comprising an LCL-filter and a mains switch.

Abstract: The invention relates to a battery pack, comprising a plurality of battery cells arranged consecutively. Each of said battery cells comprise a positive and a negative terminal on opposite sides of the battery cell, the battery cells being electrically connected in series with each other, wherein the terminals of the plurality of battery cells are arranged on two opposite sides of the battery pack such that positive and negative terminals of the consecutive battery cells are on both sides of the battery pack by turns next to each other. The battery pack further comprises a first and a second printed circuit board portion arranged on said two opposite sides of the battery pack, respectively. The first and the second printed circuit board portions comprise connection interfaces arranged next to the terminals of the battery cells. The first and the second printed circuit board portions comprise signal traces connected to the terminals of the battery cells via the connection interfaces.

Abstract: A motor drive includes a rectifier bridge, which rectifier bridge is connected to an DC link, which is connected to an inverter bridge having phase outputs configured to be connected to an elevator motor, as well as a drive control controlling the semiconductor switches of the inverter bridge. The inverter bridge has upper semiconductor switches of the upper side connected to plus of the DC link and lower semiconductor switches of the lower side connected to minus of the DC link, the upper semiconductor switches are semiconductor switches without desaturation- and/or over-current protection whereas the lower semiconductor switches comprise a desaturation- and/or over-current protection, or vice versa.