13.07.2015 Views

MiCOM P921/P922/P923 - Schneider - error

MiCOM P921/P922/P923 - Schneider - error

MiCOM P921/P922/P923 - Schneider - error

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P92x/EN FT/H42Page 12/70Technical GuideUser Guide<strong>MiCOM</strong> <strong>P921</strong>/<strong>P922</strong>/<strong>P923</strong>1.2 Menu structureThe relay’s menu is arranged in a tabular structure. Each setting in the menu isreferred to as a cell, and each cell in the menu may be accessed by reference to arow and column address. The settings are arranged so that each column containsrelated settings, for example all of the disturbance recorder settings are containedwithin the same column. As shown in the figure, the top row of each columncontains the heading that describes the settings contained within that column.Movement between the columns of the menu can only be made at the columnheading level. A complete list of all of the menu settings is given in the MenuContent tables (P92x/EN HI section).Column headerOPparamConfig. Measur. Comm. Protections Autom. Ctrl RecordsColumndatasettingsP0106ENb1.3 PASSWORDMENU STRUCTURE1.3.1 Password protectionA password is required for relay settings, especially when changing the variousthresholds, time delays, communication parameters, allocation of inputs and outputsrelays.The password consists of four capital characters. When leaving factory, thepassword is set to AAAA. The user can define his own combination of fourcharacters.Should the password be lost or forgotten, the modification of the stored parametersis blocked. It is then necessary to contact the manufacturer or his representative anda stand-by password specific to the relay may be obtained.The programming mode is indicated with the letter "P" on the right hand side of thedisplay on each menu heading. The letter "P" remains present as long as thepassword is active (5 minutes if there is no action on the keypad).

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