ABB Relion 650 series ANSI, Engineering Manual

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LED operation mode Follow-F
IEC08000396.vsd
= Steady = Flash Illumination =>
R
Y
G
R
Y
G
S
ig
na
ls
LE
D
IEC08000396 V1 EN
Figure 46: LHMI: LED operation mode Follow-F
This is the same mode as Follow-S but the LED illuminates flashing, see Figure 46 .
This mode may be used to indicate that a tap changer or Petersen coil is moving.
LED operation mode LatchedAck-F-S
IEC08000397.vsd
R
Y
G
R
Y
G
S
ig
na
ls
LE
D
Ack
= Steady = Flash Illumination =>
IEC08000397 V1 EN
Figure 47: LHMI: LED operation mode LatchedAck-F-S / Base
The classical mode to indicate incoming alarms or warnings, which the operator has
not seen since the last acknowledgement, is presented in
Figure 47 as a basic operation
mode. Two possibilities for the operator to acknowledge:
• The signal is already gone when acknowledged, the LED turns OFF (at least for
this color).
• The signal is still ON , the LED stays illuminated and changes to steady state.
Section 6
1MRK 511 245-UUS -
Local HMI engineering
74 650 series ANSI
Engineering Manual