Fail-safe power control apparatus with controllable change-over switches
AssigneeKone Corporation
InventorsAri Kattainen, Antti Kallioniemi
Life of this patent
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Abstract
A fail-safe power control apparatus for supplying power between an energy source and the motor of a transport system. The power control apparatus includes a power supply circuit, which has at least one converter containing controllable change-over switches, and the power control apparatus has a controller for controlling the converter change-over switches, a data transfer bus, at least two controllers adapted to communicate with each other, and a control arrangement for controlling a first braking device, and possibly a control arrangement for controlling a second braking device.
Claims20
Power control apparatus for supplying power between an energy source and the motor of a transport system, said power control apparatus comprising a power supply circuit which comprises at least one electronic power converter containing controllable change-over switches, said power control apparatus further comprising at least a first and a second controller adapted to communicate with each other, said controllers comprising altogether at least one converter control function, and said power control apparatus comprising the control of at least one braking device, where at least the first and the second controllers comprise inputs for motion signals of the transporting equipment, monitoring of the motion of the transporting equipment, and outputs for control signals for at least one braking device.
Dependencies are inferred from the claim text.