ABB Relion 650 Series Applications Manual page 62

Section 5
Local human-machine interface
Table 7:
LED state
Off
On
Flashing
5.1.4.2 Parameter management
The LHMI is used to access the IED 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.
5.1.4.3 Front communication
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.
56
Alarm indications
Description
Normal operation. All activation signals are off.
• 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.
• 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.
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