Table 8:Trip LED (red)LED state DescriptionOff Normal operation.On A protection function has tripped. An indication message is displayed ifthe auto-indication feature is enabled in the local HMI.The trip indication is latching and must be reset via communication, LHMIor binary input on the LEDGEN component. To open the reset menu onthe LHMI, press .Flasing Configuration mode.Alarm indicatorsThe 15 programmable three-color LEDs are used for alarm indication. Anindividual alarm/status signal, connected to any of the LED function blocks, can beassigned to one of the three LED colors when configuring the IED.Table 9:Alarm indicationsLED state DescriptionOff Normal operation. All activation signals are off.On • Follow-S sequence: The activation signal is on.• LatchedColl-S sequence: The activation signal is on, or it is off but the indicationhas not been acknowledged.• LatchedAck-F-S sequence: The indication has been acknowledged, but theactivation signal is still on.• LatchedAck-S-F sequence: The activation signal is on, or it is off but theindication has not been acknowledged.• LatchedReset-S sequence: The activation signal is on, or it is off but theindication has not been acknowledged.Flashing • Follow-F sequence: The activation signal is on.• LatchedAck-F-S sequence: The activation signal is on, or it is off but theindication has not been acknowledged.• LatchedAck-S-F sequence: The indication has been acknowledged, but theactivation signal is still on.5.4.2 Parameter management GUID-5EE466E3-932B-4311-9FE1-76ECD8D6E245 v9The LHMI is used to access the relay parameters. Three types of parameters can beread and written.• Numerical values• String values• Enumerated valuesNumerical values are presented either in integer or in decimal format withminimum and maximum values. Character strings can be edited character bycharacter. Enumerated values have a predefined set of selectable values.Section 5 1MRK 504 169-UEN ALocal HMI72 Transformer protection RET650 2.2 IECApplication manual
