Table. 5.3.6 - 82. Information displayed by the function.
Name
Range
Step
Description
I0Int>
condition
0: Normal
1: StartFWD
2: StartREV
3: Trip
4: Blocked
-
Displays status of the protection function.
U0>
measuring
now
0: No U0 avail!
1: U3 Input
2: U4 Input
-
Displays which voltage channel is used by the function. If no voltage channel
has been selected the function defaults to "No U0 avail!".
Expected
operating
time
0.000...1800.000s 0.005s Displays the expected operating time when a fault occurs.
Time
remaining to
trip
0.000...1800.000s 0.005s When the function has detected a fault and counts down time towards a trip,
this displays how much time is left before tripping occurs.
Spikes
remaining to
trip >
0...4294967295
1
Displays how many spikes need to be detected before tripping can occur.
Function blocking
The block signal is checked in the beginning of each program cycle. The blocking signal is received
from the blocking matrix in the function's dedicated input. If the blocking signal is not activated when
the pick-up element activates, a START signal is generated and the function proceeds to the time
characteristics calculation.
If the blocking signal is active when the pick-up element activates, a BLOCKED signal is generated and
the function does not process the situation further. If the START function has been activated before the
blocking signal, it resets and the release time characteristics are processed similarly to when the pick-
up signal is reset.
The blocking of the function causes an HMI display event and a time-stamped blocking event with
information of the startup current values and its fault type to be issued.
The blocking signal can also be tested in the commissioning phase by a software switch signal when
the relay's testing mode "Enable stage forcing" is activated (
General
→
Device info).
The variables the user can set are binary signals from the system. The blocking signal needs to reach
the device minimum of 5 ms before the set operating delay has passed in order for the blocking to
activate in time.
Operating time characteristics for trip and reset
The operating timers’ behavior during a function can be set for trip signal and for the release of the
function in case the pick-up element is reset before the trip time has been reached. A definite time (DT)
operation gives the trip signal after a user-defined time delay regardless of the measured current as
long as the pick-up element is active. The following table presents the setting parameters for the
function time characteristics.
A
AQ
Q-F215
-F215
Instruction manual
Version: 2.04
140