Setting Notes - Siemens Siprotec 7VK61 Manual

Functions
2.7 Monitoring Function
Figure 2-56

2.7.2.2 Setting Notes

General
The number of circuits to be supervised was set during the configuration in address 140 Trip Cir. Sup.
(Section 2.1.1.2). If the trip circuit supervision is not used at all, the setting Disabled must be applied there.
The trip circuit supervision can be switched ON or OFF in address 4001 FCT TripSuperv.. The number of
binary inputs that shall be used in each of the supervised circuits is set in address 4002 No. of BI. If the
routing of the binary inputs required for this does not comply with the selected supervision mode, an alarm is
given („TripC1 ProgFAIL ...", with identification of the non-compliant circuit).
Monitoring with one binary input
The alarm for supervision with two binary inputs is always delayed by approx. 1 s to 2 s, whereas the delay time
of the alarm for supervision with one binary input can be set in address 4003 Alarm Delay. 1 s to 2 s are
sufficient if only the 7VK61 device is connected to the trip circuits as the trip circuit supervision does not operate
during a system fault. If, however, trip contacts from other devices are connected in parallel in the trip circuit,
the alarm must be delayed such that the longest trip command duration can be reliably bridged.
148
Logic diagram for trip circuit supervision with one binary input
SIPROTEC, 7VK61, Manual
C53000-G1176-C159-3, Release date 05.2009