Siemens SIPROTEC 7UM62 - Page 292

Functions
2.42 Monitoring Functions
SIPROTEC, 7UM62, Manual
C53000-G1176-C149-7, Release date 03.2010
292
Table 2-14 Summary of Malfunction Responses by the Protection Relay
Monitoring Possible Causes Malfunction
Response
Message (No.) Output
Auxiliary Supply Voltage
Loss
External (aux. voltage) in-
ternal (converter)
Device nonoperational all LEDs dark DOK
2)
drops out
Internal Supply Voltages Internal (converter) or refer-
ence voltage
Device shutdown LED ”ERROR"
„Error A/D-conv.“
(No.181)
DOK
2)
drops out
Battery Internal (battery) Indication „Fail Battery“
(No. 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) Aborted restart, Device
shutdown
LED flashes DOK
2)
drops out
Program Memory RAM Internal (hardware) during startup LED flashes DOK
2)
drops out
during operation:
Restart attempt
1)
LED ”ERROR"
Settings store Internal (hardware) Restart attempt
1)
LED ”ERROR" DOK
2)
drops out
Sampling frequency Internal (hardware) Device shutdown LED ”ERROR" DOK
2)
drops out
1 A / 5 A changeover on
side 1
Jumper for 1 A/5 A for side
1 misconnected
Device out of service in-
dication
LED ”ERROR"
„Err1A/5AwrongS1“
(No. 210)
DOK drops out
2)
1 A / 5 A changeover on
side 2
Jumper for 1 A/5 A for side
2 misconnected
Device out of service in-
dication
LED ”ERROR"
„Err1A/5AwrongS2“
(No. 211)
DOK drops out
2)
Voltage/current changeover
at MU1
Jumper setting for trans-
ducer 1 inconsistent with
parameter 0295
Device out of service in-
dication
LED ”ERROR"
„Err. TD1 jumper“
(No. 212)
DOK drops out
2)
Voltage/current changeover
at MU2
Jumper setting for trans-
ducer 2 inconsistent with
parameter 0296
Device out of service in-
dication
LED ”ERROR"
„Err. TD2 jumper“
(No. 213)
DOK drops out
2)
Filter On/Off changeover at
MU3
Jumper setting for measur-
ing transducer 1 inconsis-
tent with parameter 0297
Device out of service in-
dication
LED ”ERROR"
„Err. TD3 jumper“
(No. 214)
DOK drops out
2)
Current Sum Side 1 Internal
(measured value acquisi-
tion)
Indication „Fail. Σ I Side1“
(No. 230)
as allocated
Current Sum Side 2 Internal
(measured value acquisi-
tion)
Indication „Fail. Σ I Side2“
(No. 231)
as allocated
Current Symmetry Side 1 External (power system or
current transformer)
Indication „Fail. Isym 1“
(No. 571)
as allocated
Current Symmetry Side 2 External (power system or
current transformer)
Indication „Fail. Isym 2“
(No. 572)
as allocated
Voltage sum Internal (measured value
acquisition)
Indication „Fail Σ U Ph-E“
(No. 165)
as allocated
Voltage symmetry External (power system or
voltage transformer)
Indication „Fail U balance“
(No. 167)
as allocated
Voltage phase sequence external (power system or
connection)
Indication „Fail Ph. Seq. U“
(No. 176)
as allocated
Current Phase Sequence
Side 1
External
(power system or connec-
tion)
Indication „FailPh.Seq I S1“
(No. 265)
as allocated