I/I0 Arc> LN
behaviour
1: On
2: Blocked
3: Test
4: Test/Blocked
5: Off
Displays the mode of ARC block.
This parameter is visible only when
Allow setting of individual LN mode is enabled
in
General menu.
I/I0 Arc>
condition
0: Z1 Trip
1: Z1 Blocked
2: Z2 Trip
3: Z2 Blocked
4: Z3 Trip
5: Z3 Blocked
6: Z4 Trip
7:Z4 Blocked
Displays status of the protection function.
Sensor status
0: Ph Curr Blocked
1: Ph Curr Start
2: Res Curr Blocked
3: Res Curr Start
4: Channel1 Light
5: Channel1 Pressure
6: Channel2 Light
7: Channel2 Pressure
8: Channel3 Light
9: Channel3 Pressure
10: Channel4 Ligh
t11: Channel4
Pressure
12: Digital input
13: I/I0 Arc> Sensor 1
Fault
14: I/I0 Arc> Sensor 2
Fault
15: I/I0 Arc> Sensor 3
Fault
16: I/I0 Arc> Sensor 4
Fault
17: I/I0 Arc> I/O-unit
Fault
Displays the general status of sensors.
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 TRIP signal is generated.
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.
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).
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.
Events and registers
The arc fault protection function (abbreviated "ARC" in event block names) generates events and
registers from the status changes in START, TRIP, and BLOCKED. The user can select which event
messages are stored in the main event buffer: ON, OFF, or both.
The events triggered by the function are recorded with a time stamp and with process data values.
A
AQ
Q-T256
-T256
Instruction manual
Version: 2.06
© Arcteq Relays Ltd
IM00028
155
Summary of Contents for AQ-T256
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