FANOX SIA-B Series User Manual

Contents

FANOX SIA-B Series User Manual Manual pdf 33 page image

www.fanox.com Rev. 07 33/1384.13. Function 49T. External tripThe relay has 3 configurable inputs and any of them can be configured as external trip input (by defaultinput 1 is configured as external trip input). This input is normally connected to a bimetallic contactfitted to the power transformer. This serves as a backup to the overcurrent functions.Auxiliary supply is not required. It allows the connection of a bimetallic free potential contact. Whenthis contact closes, it activates the input.This input is especially protected against magnetic noise.The external trip is available from the minimum required current to power the relay (75 mA in 3-phase/160 mA in single phase).4.14. Settings GroupsThere are four settings Setting groups and one general Setting group. The settings Setting group whichis active at a specific moment can be modified in two ways:• Changing the active Setting group settings. In the general group there is a setting whichestablishes which Setting group is active (Setting group 1, Setting group 2, Setting group 3 orSetting group 4).• By means of two inputs. To this end four possibilities are defined.00 This situation is governed by the active Setting group settings.01 Setting group 110 Setting group 211 Setting group 3Setting group 4 is not possible to be selected through inputs, only through general settings. NOTE: Settings groups general setting should be different to the set in CLP function. If they are equal,the relay will work with Setting group 1.In the zero position the active item is defined by the active Setting group settings defined in the generalgroup. Regarding other options, regardless of that established by the settings, the inputs prevail overthe settings.If the use of both inputs is not required, then one can be used, but depending on which is used, operationcan be done with Setting group 1 or Setting group 2.