5.5.1.3 Alarm 1 Hysteresis
Here hysteresis means: The difference in
thresholds between switching on and
switching off. This difference should be
selected large enough to avoid undesired
switching actions at the output due to the
variations of the current instantaneous
value.
For positive alarm value:
Switching on hysteresis
Current
value
Positive
alarm
Output
Switching on value = alarm + switching on hysteresis ∆a
Switching off value = alarm – switching off hysteresis ∆b
The switching on value must be greater than the switching off value.
For negative alarm value:
Negative
Current
alarm
value
Switching on
hysteresis
Output
Page 22
Note:
Alarm value and hysteresis are always
based on the displayed current value and
not on the input signal value.
Switching off hysteresis
Switching off
hysteresis
Set switching on hysteresis ∆a for alarm 1
Menu <–> Selection
Example 1.0
Select digit
Set digit
press the
key to accept the selection
Set switching off hysteresis ∆b for limit 1
Menu <–> Selection
Example: 1,0
Select digit
Set digit, then select signal form for output 1,
Chapter 5.5.1.5
press the
keey to accept the selection
5..5.1.4 Reset Latch signal at output 1
Menu <–> Selection
Manual reset with red key
Alarm output can only be reset manually if
is selected as the function and is displayed.
Electrical reset with MPI-Input
Alarm output can only be reset electrically, if
is selected as the function and is displayed.
Both manual and electrical reset
Alarm output can either be reset manually via the red key or via a reset pulse
press the
key
on the MP input.
to accept
Note: The Display Hold function is off.
5.5.1.5 Select Signal Form for Output 1
Menu <–> Selection
Positive output signal
Output is activated, when the instantaneous value > alarm 1
Negative output signal
Output is deactivated, when the instantaneous value > limit 1.
press the
➱
23
or
,
or
,
Page 23