Siemens SIPROTEC 7SJ62 User Manual

Functions
2.11 Monitoring Functions
SIPROTEC, 7SJ62/64, Manual
C53000-G1140-C207-2, Release date 01.2008
217
Table 2-14 Summary of malfunction responses by the protection relay
Monitoring Possible Cause Malfunction Re-
sponse
Message (No.) Output
AC/DC supply voltage loss External
(Nominal voltage) in-
ternal (power supply)
Device shutdown All LEDs dark DOK
2)
drops out
Internal supply voltages Internal (power
supply)
Device shutdown LED "ERROR" DOK
2)
drops out
Buffer battery Internal (buffer bat-
tery)
Message „Fail Battery“ (177)
Hardware watchdog Internal
(processor failure)
Device shutdown
1)
LED "ERROR" DOK
2)
drops out
Software watchdog Internal
(processor failure)
Restart attempt
1)
LED "ERROR" DOK
2)
drops out
Working memory ROM Internal (hardware) Relay aborts restart,
device shutdown
LED blinks DOK
2)
drops out
Program memory RAM Internal (hardware) During boot sequence LED "ERROR" DOK
2)
drops out
Detection during oper-
ation: Restart attempt
1)
LED "ERROR"
Settings memory Internal (hardware) Restart attempt
1)
LED "ERROR" DOK
2)
drops out
Sampling 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
0V 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 ac-
quisition)
Device shutdown „Failure Σ I“ (162) DOK
2)
drops out
Current symmetry External (power
system or current
transformer)
Message „Fail I balance“ (163) As allocated
Voltage symmetry External (power
system or voltage
transformer)
Message „Fail V balance“ (167) As allocated
Voltage phase sequence External (power
system or connection)
Message „Fail Ph. Seq. V“ 176) As allocated
Current phase sequence External (power
system or connection)
Message „Fail Ph. Seq. I“ (175) As allocated
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Siemens SIPROTEC 7SJ62 Specifications

General

Brand	Siemens
Model	SIPROTEC 7SJ62
Category	Relays
Language	English