Siemens SIPROTEC 7SJ61 User Manual

Functions
2.8 Monitoring Functions
SIPROTEC, 7SJ61, Manual
C53000-G1140-C210-1, Release date 02.2008
145
Table 2-6 Summary of malfunction responses by the protection relay
1)
After three unsuccessful restarts, the device is taken out of service.
2)
DOK = "Device Okay" = Ready for service relay drops off, protection and control functions are blocked.
Monitoring Possible Causes Malfunction Re-
sponse
Message (No.) Output
Auxiliary supply voltage loss External (aux. volt-
age), internal (con-
verter)
Device shutdown All LEDs dark DOK
2)
drops
out
Internal supply voltages Internal (power
supply)
Device shutdown LED "ERROR" DOK
2)
drops
out
Back-up battery Internal (battery) Message „Fail Battery“ (177)
Hardware watchdog Internal (processor
failure)
Device shutdown LED "ERROR" DOK
2)
drops
out
Software watchdog Internal (processor
failure)
Restart attempt
1)
LED "ERROR" DOK
2)
drops
out
Working memory Internal (hardware) Relay aborts restart,
device shutdown
LED flashes DOK
2)
drops
out
Program memory Internal (hardware) During startup LED "ERROR" DOK
2)
drops
out
During operation:
Restart attempt
1)
LED "ERROR"
Settings Internal (hardware) Restart attempt
1)
LED "ERROR" DOK
2)
drops
out
Scanning frequency Internal (hardware) Device shutdown LED "ERROR" DOK
2)
drops
out
Measured value acquisition External (hardware) Blocking by the protec-
tion function
„Error A/D-conv.“ (181),
LED ”ERROR"
DOK
2)
drops
out
Error in the I/O-board Internal (hardware) Device shutdown „I/O-Board error“ (178),
LED "ERROR"
DOK
2)
drops
out
Module error Internal (hardware) Device shutdown „Error Board 1“ to „Error
Board 7“ (178 to 189),
LED "ERROR"
DOK
2)
drops
out
Internal auxiliary voltage 5 V Internal (hardware) Device shutdown „Error 5V“ (144),
LED "ERROR"
DOK
2)
drops
out
0 V-Monitoring Internal (hardware) Device shutdown „Error 0V“ (145),
LED "ERROR"
DOK
2)
drops
out
Internal auxiliary voltage -5 V Internal (hardware) Device shutdown „Error -5V“ (146),
LED "ERROR"
DOK
2)
drops
out
Offset Monitoring Internal (Hardware) Device shutdown „Error Offset“ (191) DOK
2)
drops
out
Internal supply voltages Internal (hardware) Device shutdown „Error PwrSupply“
(147),
LED "ERROR"
DOK
2)
drops
out
Current sum Internal (measured
value acquisition)
Message „Failure Σ I“ (162) As allocated
Current symmetry External (power
system or current
transformer)
Message „Fail I balance“ (163) As allocated
Current rotation External (power
system or connection)
Message „Fail Ph. Seq. I“ (175) As allocated
Trip circuit monitoring External (trip circuit or
control voltage)
Message „74TC Trip cir.“ (6865) As allocated
Calibration data fault Internal (Hardware) Message „Alarm NO calibr“ (193) As allocated

Siemens SIPROTEC 7SJ61 Specifications

General

Brand	Siemens
Model	SIPROTEC 7SJ61
Category	Controller
Language	English