A method for operating a winch comprising a winch drum (20) for spooling a spoolable medium (10) for mooring a vessel, comprising:monitoring a tension of the spoolable medium (10) and when tension of the spoolable medium (10) is higher than a first upper tension threshold (T1 u) or lower than a first lower tension threshold (T11), initiating driving of the winch drum (20), wherein during the driving of the winch drum (20), at least when the monitored tension of the spoolable medium (10) is between a second upper tension threshold (T2u), which has a value equal to or lower than the first upper tension threshold (T1 u) but higher than the predetermined tension set point (Sp), and a second lower tension threshold (T21), which has a value equal to or higher than the first lower tension threshold (T11) but lower than the predetermined tension set point (Sp), an absolute value of the driving speed of the winch drum is proportional to a difference between the monitored tension and the predetermined tension set point (Sp); and in response to the monitored tension being, during the driving of the winch drum (20), between the second upper tension threshold (T2u) and the second lower tension threshold (T21) for a second predetermined delay, stopping the driving of the winch drum.
METHOD FOR OPERATING WINCH, AND WINCH
VERFAHREN ZUM BETREIBEN EINER WINDE UND WINDE
PROCÉDÉ POUR FAIRE FONCTIONNER UN TREUIL ET TREUIL
2020-07-08
Patent
Electronic Resource
English