External Trip Functions; Functional Description; Setting Notes; Settings - Siemens SIPROTEC 4 7VE61 Manual

Functions

2.10 External Trip Functions

2.10 External Trip Functions
Any signals from external protection or supervision units can be incorporated and processed in the digital
multifunctional parallel switch devices 7VE61 and 7VE63 via binary inputs. Like the internal signals, they can
be signaled, time delayed, transmitted to the trip matrix, and also individually blocked. This way it is possible
to include mechanical protection equipment, e.g. Buchholz protection, into the processing of indications and
trip commands of the parallel switch devices. Furthermore, interaction between protection functions of
different devices is possible.

Functional Description

2.10.1
The logic status of the corresponding assigned binary inputs is checked at cyclic intervals. Change of input
status is considered only if at least two consecutive status checks have the same result. An additional time
delay 8602 T DELAY is available for the trip command.
The following figure shows the logic diagram for direct input trippings. This logic is implemented in all four
times in the same manner, the function numbers of the indications are each specified for the first external trip
command channel.
[logikdiagramm-direkte-einkoppelungen-020828-ho, 1, en_GB]
Figure 2-48

Setting Notes

2.10.2
General
External trip command via binary inputs is only effective and available if configured at addresses 186 EXT.
TRIP 1 to 189 EXT. TRIP 4 as Enabled. Disabled is set if the functions are not required. Addresses
8601 EXTERN TRIP 1 to 8901 EXTERN TRIP 4 are used to switch the functions individually ON- or OFF, or
to block only the trip command (Block relay).
Like the internal signals, they can be indicated as external trippings, time delayed and transmitted to the trip
matrix. The delay times are set at addresses 8602 T DELAY to 8902 T DELAY. Like for the protective func-
tions, the dropout of the direct input trippings is extended by the parametrized minimum duration TMin
TRIP CMD.

Settings

2.10.3
Addr. Parameter
8601 EXTERN TRIP 1
8602 T DELAY
104
Logic Diagram of Direct Input Trippings
Setting Options
OFF
ON
Block relay
0.00 .. 60.00 sec
Default Setting Comments
OFF External Trip Function 1
1.00 sec Ext. Trip 1 Time Delay
SIPROTEC 4, 7VE61 and 7VE63, Manual
C53000-G1176-C163-3, Edition 10.2017