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Alarm indicators
The 15 programmable three-color LEDs are used for alarm indication. An individual alarm/
status signal, connected to any of the LED function blocks, can be assigned to one of the three
LED colors when configuring the IED.
Table 11: Alarm indications
LED state
Description
Off
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 indication has not
been acknowledged.
•
LatchedAck-F-S sequence: The indication has been acknowledged, but the activation
signal is still on.
•
LatchedAck-S-F sequence: The activation signal is on, or it is off but the indication has
not been acknowledged.
•
LatchedReset-S sequence: The activation signal is on, or it is off but the indication 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 the indication has
not been acknowledged.
•
LatchedAck-S-F sequence: The indication has been acknowledged, but the activation
signal is still on.
5.4.2
Parameter management
GUID-5EE466E3-932B-4311-9FE1-76ECD8D6E245 v9
The LHMI is used to access the relay parameters. Three types of parameters can be read and
written.
•
Numerical values
•
String values
•
Enumerated values
Numerical values are presented either in integer or in decimal format with minimum and
maximum values. Character strings can be edited character by character. Enumerated values
have a predefined set of selectable values.
5.4.3
Front communication
GUID-FD72A445-C8C1-4BFE-90E3-0AC78AE17C45 v10
The RJ-45 port in the LHMI enables front communication.
•
The green uplink LED on the left is lit when the cable is successfully connected to the port.
•
The yellow LED is not used; it is always off.
1MRK 505 343-UEN B
Section 5
Local HMI
91
Application manual
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