Information List; Malfunction Responses Of The Monitoring Functions; Description - Siemens SIPROTEC 4 Manual

Functions
2.11 Monitoring Functions
Addr. Parameter
8202 Alarm Delay

Information List

2.11.2.4
No. Information
6851 >BLOCK 74TC
6852 >74TC trip rel.
6853 >74TC brk rel.
6861 74TC OFF
6862 74TC BLOCKED
6863 74TC ACTIVE
6864 74TC ProgFail
6865 74TC Trip cir.

Malfunction Responses of the Monitoring Functions

2.11.3
In the following malfunction responses of monitoring equipment are clearly listed.
2.11.3.1

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.
monitoring functions and the malfunction responses of the relay.
Table 2-10
Monitoring
AC/DC supply voltage loss
Buffer battery
Hardware watchdog
Software watchdog
Working memory ROM
Program memory RAM
170
Setting Options
1 .. 30 sec
Type of
Informa-
tion
SP
SP
SP
OUT
OUT
OUT
OUT
OUT
Summary of malfunction responses by the protection relay
Possible Causes
External
(Nominal voltage)
internal (power
supply)
Internal (buffer
battery)
Internal
(processor failure)
Internal
(processor failure)
Internal (hardware)
Internal (hardware)
Default Setting
2 sec
Comments
>BLOCK 74TC
>74TC Trip circuit superv.: trip relay
>74TC Trip circuit superv.: bkr relay
74TC Trip circuit supervision OFF
74TC Trip circuit supervision is BLOCKED
74TC Trip circuit supervision is ACTIVE
74TC blocked. Bin. input is not set
74TC Failure Trip Circuit
Table 2-10
Malfunction Message (No.)
Response
Device shutdown All LEDs dark
Message Fail Battery (177)
LED "ERROR"
Device shutdown 1)
LED "ERROR"
Restart attempt 1)
Relay aborts restart, LED blinkt
device shutdown
During boot sequence LED "ERROR"
Detection during oper- LED "ERROR"
ation:
Restart attempt 1)
E50417-G1140-C343-A8, Edition 12.2017
Comments
Delay Time for alarm
provides a summary of the
Output
DOK 2)
out
DOK 2)
out
DOK 2)
out
DOK 2)
out
DOK 2)
out
SIPROTEC 4, 7SJ80, Manual
drops
drops
drops
drops
drops