Indication Messages; Internal Faults - Hitachi Relion 670 Series Operation Manual

1MRK500127-UUS Rev. M
Headline
Mismatching data batch size to DistRep
LDCM missing connections
LDCM system frequency
LDCM AnalogLatency
HW Configuration missing
SMAI incorrect calculated phase-earth
9.2

Indication messages

9.2.1

Internal faults

When the Ready LED indicates an internal fault by flashing, the message associated with the fault is
found in the internal event list in the LHMI menu Main menu/Diagnostics/Internal events. The
message includes the date, time, description and signal state for the fault. The internal event list is not
updated dynamically. The list is updated by leaving the Internal events menu and then selecting it again.
The current status of the internal fault signals can also be checked via the LHMI in Main menu /
Diagnostics/IED status .
Different actions are taken depending on the severity of the fault. If the fault is found to be permanent,
the IED stays in internal fault mode. The IED continues to perform internal tests during the fault situation.
When a fault appears, the fault indication message is to be recorded and stated when requesting support
or service.
670 series
Operation manual
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Explanation
Check cycle time for SMAI and 3PHSUM blocks connected
to Disturbance Report blocks. SMAI and 3PHSUM blocks
shall have the same cycle time.
LDCM transmitter is missing connections. Check the
LDCMTRN block.
System frequency is different in local and remote end of
LDCM link.
Check the parameter FrequencySel at both ends.
LDCM analog latency is different in local and remote.
Check the LDCM parameters AnalogLatency and
remAinLatency at both ends.
HW configuration necessary to configure RSTP on
<Access Point> is missing. Please contact the SA - T
Supportline to fix this error.
Access points can be any of these : AP_1, AP_3
Calculated phase-earth values are used from one or more
SMAIs configured for phase-phase inputs, without
connected N input. However, this configuration, combined
with unbalanced three-phase input, will result in incorrectly
calculated phase-earth values. This in turn may result in
maloperation of functions connected to SMAIs configured
this way, if the function uses phase-earth based values.
Further, if SUM3PH is connected to such a SMAI, then its
output values will be incorrect, and connected functions
may maloperate. To remedy the situation, please revise the
configuration from this perspective.
Section 9
Troubleshooting
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