There are two levels of alarms in U> L-L, U< L-L, U> L-N, U< L-N, f>, f< and I>.
In principle, the average calculation is done, for example, every time the main voltage measurement updates. The average is
calculated based on the RMS value of the three phases.
Parameter Item
14000 Avg G U> L-L 1
14010 Avg G U> L-L 2
14020 Avg G U< L-L 1
14030 Avg G U< L-L 2
14040 Avg G U> L-N 1
14050 Avg G U> L-N 2
14060 Avg G U< L-N 1
14070 Avg G U< L-N 2
14080 Avg G f> 1
14090 Avg G f> 2
14100 Avg G f< 1
14110 Avg G f< 2
14120 Avg I> 1
14130 Avg I> 2
INFO
It is not possible to configure the alarms from the display, only from the USW.
6.47 Differential measurement
With the differential measurement function, the AGC can compare two analogue inputs. You can configure an alarm and/or relay to
activate when the difference exceeds the configured set point.
For example, for an air filter check, the timer is activated if the set point (the difference between PA (analogue A) and PB (analogue
B)) is exceeded. Note that if the differential value drops below the set point before the timer runs out, then the timer is stopped and
reset.
Timer
value
Before filter
∆ P=P
A
-P
B
P
B
P
A
Differential
limit
Differential
Alarm
After filter
Nine different differential measurements between two analogue input values can be configured. Differential measurements between
two sensors can be configured in menus 4600-4606, 4670-4676 and 4741-4746.
DESIGNER'S HANDBOOK 4189341275A EN Page 178 of 196
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