Siemens SIPROTEC 4, User Manual

Page: 197 / 734

Addr. Parameter Setting Options Default Setting Comments
8202 Alarm Delay 1 .. 30 sec 2 sec Delay Time for alarm
Information List
No. Information Type of
Informa-
tion Comments
6851 >BLOCK 74TC SP >BLOCK 74TC
6852 >74TC trip rel. SP >74TC Trip circuit superv.: trip relay
6853 >74TC brk rel. SP >74TC Trip circuit superv.: brk relay
6861 74TC OFF OUT 74TC Trip circuit supervision OFF
6862 74TC BLOCKED OUT 74TC Trip circuit supervision is BLOCKED
6863 74TC ACTIVE OUT 74TC Trip circuit supervision is ACTIVE
6864 74TC ProgFail OUT 74TC blocked. Bin. input is not set
6865 74TC Trip cir. OUT 74TC Failure Trip Circuit
Malfunction Responses of the Monitoring Functions
In the following malfunction responses of monitoring equipment are clearly listed.
Description
Malfunction Responses
Depending on the type of malfunction discovered, an annunciation is sent, a restart of the processor system is
initiated, or the device is taken out of service. After three unsuccessful restart attempts, the device is taken out
of service. The operational readiness NC contact operates to indicate the device is malfunctioning. Also, the
red LED ”ERROR" lights up on the front cover, if the internal auxiliary voltage is present, and the green ”RUN"
LED goes out. If the internal auxiliary voltage fails, all LEDs are dark.
Table 2-14 provides a summary of the
monitoring functions and the malfunction responses of the relay.
Table 2-14 Summary of malfunction responses by the protection relay
Monitoring Possible Causes Malfunction
Response Message (No.) Output
AC/DC supply voltage loss External
(Nominal voltage)
internal (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
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 blinkt
DOK 2) drops
out
2.12.2.4
2.12.3
2.12.3.1
Functions
2.12 Monitoring Functions
SIPROTEC 4, 7SJ62/64, Manual 197
C53000-G1140-C207-8, Edition 08.2016