Siemens SIPROTEC 7RW80 User Manual

Functions
2.5 Monitoring Functions
SIPROTEC, 7RW80, Manual
C53000-G1140-C233-1, Release date 10.2010
78
Table 2-5 Summary of Malfunction Responses by the Protection Relay
1)
After three unsuccessful restarts, the device is shut down.
2)
DOK = "Device Okay" = Ready for service relay drops off, protection and control functions are blocked.
Group Annunciations
Certain annunciations of the monitoring functions are already combined to group annunciations. These group
annunciations and their composition are stated in the Appendix A.9. In this context it must be noted that the
annunciation 160 „Alarm Sum Event“ is only issued when the measured value monitoring functions (8101
MEASURE. SUPERV) are activated.
Monitoring possible causes Malfunction Response Message (No.) Output
AC/DC supply voltage loss External
(auxiliary voltage)
internal
(converter)
Device shutdown All LEDs dark DOK
2)
drops out
Buffer battery internal
(buffer battery)
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 opera-
tion:
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
Error in the I/O-board Internal (Hardware) Device shutdown „I/O-Board error“ (178),
LED ”ERROR"
DOK
2)
drops out
Offset Monitoring Internal (Hardware) Device shutdown „Error Offset“ (191) DOK
2)
drops out
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
Trip circuit monitoring External
External (trip circuit
or control voltage)
Message „74TC Trip cir.“ (6865) As allocated
Secondary voltage transformer
circuit monitoring
External
(voltage transformer
circuit interruption)
Message "VT brk. wire" (253) As allocated
Calibration data fault internal
(hardware)
Message „Alarm NO calibr“ (193) As allocated

Siemens SIPROTEC 7RW80 Specifications

General

Brand	Siemens
Model	SIPROTEC 7RW80
Category	Relays
Language	English