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Method for controlling and in particular monitoring an actuator, in particular of a winch, a hoist or a crane, and system for carrying out such a method

A technology for actuators and elevators, applied in cranes, monitoring, reversing, transportation and packaging, etc., can solve the problem of unreliable calculation of expected value of frequency converter

Active Publication Date: 2021-01-12
KONECRANES GLOBAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to meet at least the requirements according to control category 3 and performance level d, reliable actual values ​​must be available to the fail-safe unit for reliable monitoring of the actuator, since, with regard to the above specification, the Expected value calculations are considered unreliable

Method used

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  • Method for controlling and in particular monitoring an actuator, in particular of a winch, a hoist or a crane, and system for carrying out such a method
  • Method for controlling and in particular monitoring an actuator, in particular of a winch, a hoist or a crane, and system for carrying out such a method
  • Method for controlling and in particular monitoring an actuator, in particular of a winch, a hoist or a crane, and system for carrying out such a method

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Embodiment Construction

[0032] figure 1 A system for controlling and monitoring a drive actuator 1 according to the prior art already described in the introduction is shown. In this case, the actuator 1 is part of an electric motor 1a, which is designed by way of example as a frequency converter-controlled electric motor and can be a drive motor of a winch, a hoist or a crane. An operating part (not shown), which is also defined as a control point and can be, for example, a radio remote control or a radio controller, can be used to control the actuator 1, because, by actuating the operating elements of the operating part, the control commands Can be specified for actuator 1. A control command can eg be "move at maximum speed in forward direction" or "move at speed 1 m / min in backward direction". Starting from the operating part, signals corresponding to the respective control commands are transmitted from the fail-safe control unit 2 via the control line 2 a to the converter 4 designed as a frequen...

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Abstract

The invention relates to a method for controlling an actuator (1), in particular an actuator (1) of a winch, a hoist or a crane, wherein the actuator (1) is controlled using a fail-safe control unit (2). In order to improve a corresponding method, according to the invention setpoint values are calculated in the fail-safe control unit (2), on the basis of which values the actuator (1) is controlled. The invention also relates to a system for carrying out such a method.

Description

technical field [0001] The invention relates to a method for controlling an actuator, in particular an actuator of a winch, a lift or a crane, wherein the actuator is controlled via a fail-safe control unit. [0002] The invention also relates to a system for carrying out such a method. Background technique [0003] The safety functions of winches, hoists and cranes must meet specific safety standards. Normative provisions for safety functions and associated control units for cranes or their actuators are found, for example, in DIN EN ISO 13849, DIN EN 14492-2 and DIN EN 15011. The basic principle behind every safety function of a crane is to reliably achieve a safe state, especially the safe stopping of the drive shaft of the crane. For this purpose, the control unit must ensure that the drive actuators of the respective drive shafts are switched off and then the actuators of the holding brakes are used to hold the position of the drive shafts by means of the mechanical b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66D1/46B66D1/54
CPCB66D1/54B66D1/485B66D1/46B66C13/46B66C15/00B66C13/22B66C13/26B66C2700/081B66C2700/084H02P6/12
Inventor 德克·诺伊鲍尔
Owner KONECRANES GLOBAL
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