Siemens siprotec 7SA522 User Manual page 373

Table 6-6 Summary of the device response to detected failures
Monitoring
Auxiliary voltage failure
Measured value
acquisition
Buffer battery
Hardware–watchdog
Software–watchdog
Working memory
Program memory
Parameter memory
Sampling frequency
1 A/5 A–setting
Calibration data
Earth current transformer
sensitive/normal
Modules
Current sum
Current symmetry
Broken conductor
1
) Following three unsuccessful reboot attempts, the device is taken out of service
2
) D.OK = "Device Okay" = Live contact relay
7SA522 Manual
C53000-G1176-C119-2
• (UURU ZLWK D VXPPDU\ DODUP (F.No. 140, i.e. general device failure)
• $ODUP VXPPDU\ HYHQW (F.No. 160, i.e. general supervision alarm)
• )DLOXUH JHQHUDO FXUUHQW VXSHUYLVLRQ (F.No. 161)
• )DLOXUH JHQHUDO YROWDJH VXSHUYLVLRQ (F.No. 164)
Possible causes
external (aux. supply)
internal (converter)
internal (converter or
reference voltage)
internal (buffer battery)
internal (processor fail)
internal (program execu-
tion)
internal (RAM)
internal (EPROM)
internal (EEPROM or RAM) LED "ERROR"
internal (clock)
jumper settings
1 A/5 A incorrect
internal (EEPROM or RAM) "$ODUP 12 FDOLEU"
I/O–module does not corre-
spond to the ordering code
of the device
module does not corre-
spond to the ordering code
of the device
internal (measured value
acquisition)
external (primary plant or
current transformers)
external (primary plant or
current transformers)
Alarm (function no.)
all LEDs dark or device out of service or
"(UURU  9" (144)
general alarm: 140
LED „ERROR" protection out of service
"(UURU $'FRQY"
general alarm: 140
(181)
´)DLO %DWWHU\µ
alarm: 177

LED "ERROR" protection out of service D.OK
LED "ERROR" reboot attempt
LED flashes reboot attempt
abortion of the boot
process
device out of service
LED "ERROR" reboot attempt
reboot attempt
LED "ERROR" reboot attempt
"(UURU$$ZURQJ" general alarm: 140
"(UURU $'FRQY"
protection out of service
LED "ERROR" (192,
181)
general alarm: 160
(193) default values used
"(UURU QHXWUDO&7"
general alarm: 140
"(UURU $'FRQY"
LED "ERROR" (194, protection out of service
181)
"(UURU %RDUG
general alarms: 160, 140
" and if applica-
ble protection out if service
"(UURU $'FRQY"
(183 ... 189, 181)
´)DLOXUH Σ," (162)
general alarms: 161, 160 as allocated
")DLO , EDO
general alarms: 161, 160 as allocated
DQFH"(163)
")DLO &RQGXFWRU"
(195)
Failure response
General alarms
D.OK
D.OK
as allocated
1
) D.OK
1
) D.OK
1
) D.OK
1
) D.OK
1
) D.OK
D.OK
as allocated
D.OK
D.OK
as allocated
Functions
Output
2
) resets
2
) resets
2
) resets
2
) resets
2
) resets
2
) resets
2
) resets
2
) resets
2
) resets
2
) resets
2
) resets
6-225