Siemens SIPROTEC 4 Manual page 171

Monitoring
Settings memory
Sampling frequency
Measured value acquisition
Error in the I/O-board
Offset monitoring
Current sum
Current symmetry
Voltage symmetry
Voltage phase sequence
Current phase sequence
Fuse Failure Monitor
Trip circuit monitoring
Secondary voltage transformer
circuit monitoring
Calibration data fault
1) After three unsuccessful restart attempts, the device is shut down.
2) DOK = "Device Okay" = Ready for service relay drops off, protection and control functions are blocked.
Group Alarms
Certain messages of the monitoring functions are already combined to group alarms. A listing of the group
alarms and their composition is given in the Appendix
message 160 Alarm Sum Event is only issued when the measured value monitoring functions (8101
MEASURE. SUPERV) are activated.
SIPROTEC 4, 7SJ80, Manual
E50417-G1140-C343-A8, Edition 12.2017
Possible Causes Malfunction
Response
Internal (hardware)
Restart attempt
Internal (hardware) Device shutdown
External (hardware) Blocking by the protec-
tion function
Internal (hardware) Device shutdown
Internal (hardware) Device shutdown
Internal Device shutdown
(measured value
acquisition)
External (power Message
system or current
transformer)
External (power Message
system or voltage
transformer)
External (power Message
system or connec-
tion)
External (power Message
system or connec-
tion)
External Message
(voltage transformer)
External (trip circuit Message
or control voltage)
External (voltage Message
transformer circuit
interruption)
Internal (hardware) Message
Message (No.)
LED "ERROR"
1)
LED "ERROR"
Error A/D-conv.
(181),
LED "ERROR"
I/O-Board error
(178),
LED "ERROR"
Error Offset (191) DOK
Failure Σ I (162)
Fail I balance
(163)
Fail V balance
(167)
Fail Ph. Seq. V
176)
Fail Ph. Seq. I
(175)
VT FuseFail>10s
(169)
VT FuseFail (170)
74TC Trip cir.
(6865)
VT brk. wire (253) As allocated
Alarm NO calibr
(193)
F.4 Group Alarms. In this case, it must be noted that
Functions
2.11 Monitoring Functions
Output
DOK 2) drops
out
DOK 2) drops
out
DOK 2) drops
out
DOK 2) drops
out
2) drops
out
DOK 2) drops
out
As allocated
As allocated
As allocated
As allocated
As allocated
As allocated
As allocated
171