Appendix B -Settings and Signals
ORDINAL SIGNAL NAME ELEMENT NAME
DESCRIPTION
Front panel miniature battery failure - either battery removed from slot, or low voltage
48V field voltage failure
Comm2 hardware failure - second rear communications board
The IED is not subscribed to a publishing IED in the current scheme
Ethernet board not fitted
Ethernet board not responding
Ethernet board unrecoverable error
DDB_INVALID_NIC_TCPIP_CONFIG
DDB_INVALID_NIC_OSI_CONFIG
Ethernet board software not compatible with main CPU
DDB_NIC_IP_ADDRESS_CONFLICT
The IP address of the IED is already used by another IED
EIA(RS)232 InterMiCOM indication that Loopback testing is in progress
EIA(RS)232 InterMiCOM Message Failure alarm. Setting that is used to alarm for poor channel quality. If during the fixed 1.6 s rolling
window the ratio of invalid messages to the total number of messages that should be received (based upon the ‘Baud Rate’ setting)
exceeds the above threshold, a ‘Message Fail’ alarm will be issued
EIA(RS)232 InterMiCOM Data Channel Detect Fail i.e. modem failure
EIA(RS)232 InterMiCOM Channel Failure alarm. No messages were received during the alarm time setting
This is an alarm that is ON if any setting fail during the setting changing process. If this happens, the relay will use the last known
good setting
SNTP synchronisation fail alarm
DDB_NIC_MEM_ALLOC_FAIL_ALARM
MMS library memory allocation failure
IEEE 1588 PTP time synchronisation failure alarm
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