Setting Notes; Settings; Information List - Siemens siprotec SJ62 User Manual

2 Functions

2.11.2.2 Setting Notes

General
Monitoring with
One Binary Input

2.11.2.3 Settings

Addr. Parameter
8201 FCT 74TC

2.11.2.4 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.
197
The function is only in effect and accessible if address 182 was set to either 2 Binary
Inputs or to 1 Binary Input, and the appropriate number of binary inputs have
been allocated for this purpose (refer to Section 2.1.1.2). The function may be turned
ON at address 8201 FCT 74TC. If the allocation of the required binary inputs does not
match the selected monitoring type, then a message to this effect is generated („74TC
ProgFail"). If the trip circuit monitor is not to be used at all, then address 182
Disabled should be set. Further parameters are not needed. The message of a trip
circuit interruption is delayed by a fixed amount of time. For two binary inputs, the
delay is about 2 seconds, and for one binary input, the delay is about 300 s. Thus, it
is ensured that the longest duration of a trip command is reliably bridged for a certain
time and that an annunciation is only caused in case of a real fault occured within the
trip command.
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 pos-
sible duration of a closed trip contact. This is ensured by the fixed number of measure-
ment 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 re-
sistor and depending on the system conditions, a lower control voltage can often be
sufficient.
Information for dimensioning resistor R is given in Chapter "Installation and Commis-
sioning" under configuration instructions in Section "Trip Circuit Monitoring"
Setting Options
ON
OFF
Type of In-
formation
SP
SP
SP
OUT
OUT
OUT
OUT
OUT
Default Setting
ON
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
C53000-G1140-C147-A, Edition 07.2015
Comments
74TC TRIP Circuit Supervision
SIPROTEC 4, 7SJ62/63/64 Handbuch