Settings; Information List; Malfunction Responses Of The Monitoring Functions; Description - Siemens 7SC80 Manual

Functions
2.12 Monitoring Functions
Information for dimensioning resistor R is given in the Chapter "Installation and Commissioning" under Config-
uration Notes in the Section "Trip Circuit Supervision".
2.12.2.3

Settings

Addr. Parameter
8201 FCT 74TC
8202 Alarm Delay
2.12.2.4

Information List

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

2.12.3
The malfunction responses of monitoring equipment are summarized in the following.

Description

2.12.3.1
Malfunction Responses
Depending on the type of malfunction discovered, an indication is sent, a restart of the processor system is
initiated, or the device is shut down. After three unsuccessful restart attempts, the device is also shut down.
The readiness relay opens and indicates with its NC contact that the device is malfunctioning. Moreover, the
red "ERROR" LED lights up and the green "RUN" LED goes out. If the internal auxiliary voltage also fails, all LEDs
are dark. Table 2-16
device.
Table 2-16
Monitoring
Auxiliary voltage failure
Buffer battery
Hardware Watchdog
Software Watchdog
246
Setting Options
ON
OFF
1 .. 30 sec
Type of
Informa-
tion
SP
SP
SP
OUT
OUT
OUT
OUT
OUT
shows a summary of the monitoring functions and the malfunction responses of the
Summary of the Device's Malfunction Responses
Possible causes
external
(auxiliary voltage)
internal
(converter)
internal
(buffer battery)
internal
(processor failure)
internal
(processor failure)
Default Setting
ON
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
Malfunction response Indication (No.)
Device shutdown all LEDs off
Indication Fail Battery (177)
LED "ERROR"
Restart attempt 1)
LED "ERROR"
Restart attempt 1)
Comments
74TC TRIP Circuit Supervision
Delay Time for alarm
Output
DOK 2)
out
DOK 2)
out
DOK 2)
out
SIPROTEC Compact, 7SC80, Manual
E50417-G1140-C486-A8, Edition 07.2017
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