Siemens SIPROTEC 4 7SJ61 User Manual

Supervision with One Binary Input
Note: When using only one binary input (BI) for the trip circuit monitor, malfunctions, such as interruption of
the trip circuit or loss of battery voltage are detected in general, but trip circuit failures while a trip command
is active cannot be detected. Therefore, the measurement must take place over a period of time that bridges
the longest possible duration of a closed trip contact. This is ensured by the fixed number of measurement
repetitions and the time between the state checks.
When using only one binary input, a resistor R is inserted into the circuit on the system side, instead of the
missing second binary input. Through appropriate sizing of the resistor and depending on the system condi-
tions, a lower control voltage is mostly sufficient.
Information for dimensioning resistor R is given in the Chapter "Installation and Commissioning" under Config-
uration Notes in the Section "Trip Circuit Supervision".
Settings
Addr. Parameter Setting Options Default Setting Comments
8201 FCT 74TC ON
OFF
ON 74TC TRIP Circuit Supervision
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 2-6 provides a summary of the
monitoring functions and the malfunction responses of the relay.
2.8.2.3
2.8.2.4
2.8.3
2.8.3.1
Functions
2.8 Monitoring Functions
SIPROTEC 4, 7SJ61, Manual 129
C53000-G1140-C210-6, Edition 05.2016

Siemens SIPROTEC 4 7SJ61 Specifications

General

Brand	Siemens
Model	SIPROTEC 4 7SJ61
Category	Relays
Language	English