Passenger conveyor with deep sleep mode
First Claim
1. A passenger conveyor comprising:
- a conveyor motor;
a motor drive configured to drive the conveying motor, the motor drive including,a frequency converter with a rectifier bridge, the rectifier bridge connected to mains via at least one relay,an intermediate DC circuit, anda converter bridge connected with the conveyor motor;
a conveying controller configured to control the passenger conveyor by setting the passenger conveyor to a deep sleep mode by opening a main relay and a charging relay of the at least one relay to switch off the frequency converter and at least a portion of the conveying controller;
a signaling circuit configured to remain powered during the deep sleep mode; and
a wake-up circuit connected to the signaling circuit, the wake-up circuit configured to remain powered at least during the deep sleep mode, the wake-up circuit configured to close the charging relay in response to a signal from the signaling circuit.
1 Assignment
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Accused Products
Abstract
A passenger conveyor may include a conveyor motor controlled by a conveyor control via a motor drive, the motor drive including a frequency converter with a rectifier bridge, an intermediate DC circuit and a converter bridge connected with the conveyor motor. The rectifier bridge is configured to be connected to mains via at least one relay, which relay is controlled by the conveyor control, the conveyor comprises a deep sleep mode, in which the frequency converter as well as at least a major part of conveyor control is switched off. The intermediate DC circuit forms the power supply for the conveyor control. During the activation of the deep sleep mode, the conveyor control is configured to open the relay, whereby at least one signal circuit of the conveyor is configured to remain powered at least during the deep sleep mode.
7 Citations
19 Claims
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1. A passenger conveyor comprising:
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a conveyor motor; a motor drive configured to drive the conveying motor, the motor drive including, a frequency converter with a rectifier bridge, the rectifier bridge connected to mains via at least one relay, an intermediate DC circuit, and a converter bridge connected with the conveyor motor; a conveying controller configured to control the passenger conveyor by setting the passenger conveyor to a deep sleep mode by opening a main relay and a charging relay of the at least one relay to switch off the frequency converter and at least a portion of the conveying controller; a signaling circuit configured to remain powered during the deep sleep mode; and a wake-up circuit connected to the signaling circuit, the wake-up circuit configured to remain powered at least during the deep sleep mode, the wake-up circuit configured to close the charging relay in response to a signal from the signaling circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for operating a passenger conveyor comprising:
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setting, via a conveying controller, the passenger conveyor to a deep sleep mode by opening a main relay and a charging relay to switch off a frequency converter and at least a portion of the conveying controller while continuing to supply power to at least one signaling circuit of the passenger conveyor; receiving a wake-up signal from the signaling circuit; and charging an intermediate DC circuit by closing the charging relay to charge the intermediate DC circuit in response to receipt of the wake-up signal from the signaling circuit. - View Dependent Claims (16, 17, 18, 19)
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Specification