5:(Mag1 OR Mag2) AND
Mag3
Signal 1 OR Signal 2 AND Signal 3 has to ful ll the pick-up condition. Each signal has their own
pick-up setting.
In the example below three measurements are used. Signal 1 or Signal 2 must be ful lled along with
Signal 3 to trip the stage.
The settings for different comparison setting are in setting groups which means by changing the setting
group each signal parameter can be changed by a signal.
When setting the comparators you rst choose the comparator mode. The following modes are
available:
Mode
Description
0:Over >
Greater than. If the measured signal is higher than the set pick-up level, the comparison condition is ful lled.
1:Over(abs)
>
Bigger than (absolute). If the absolute value of the measured signal is higher than the set pick-up level, the
comparison condition is ful lled.
2:Under <
Less than. If the measured signal is less than the set pick-up level, the comparison condition is ful lled. A
blocking limit can also be set. This means the comparison is not active when measured value is under the set
blocking limit.
3:Under(abs)
<
Less than (absolute). If the absolute value of the measured signal is less than the set pick-up level, the
comparison condition is ful lled. A blocking limit can also be set. This means the comparison is not active
when measured value is under the set blocking limit.
4:Delta
set(%) +/- >
Relative change over time. If the measured signal changes more than the set relative pick-up value in 20ms,
the comparison condition is ful lled. The condition is dependent on direction.
AQ-F255
Instruction manual
Version: 2.00
195
© Arcteq Relays Ltd
