70
D u r c h f
A l a r m t y p : N I C
A l a r m t y p : H A L
D u r c h f
+
flow
C
M a n u e l l e s
R ü c k s e t z e
n d e s A l a r m
s
c a . 1 s
R1=
C=REPEAT
15.6.4 Alarm Output During the Measurement
An alarm output with switching condition
MAX
or
MIN
will be updated max. once per second to avoid humming (i.e. fluctua-
tion of the measured values around the value of the switching condition).
An alarm output of the type
NON-HOLD
will be activated if the switching condition is met. It will be deactivated if the switch-
ing condition is no longer met. The alarm will remain activated min. 1 s even if the switching condition is met for a shorter
period of time.
An alarm output with the switching condition
QUANT.
will be activated if the limit is reached.
An alarm output with the switching condition
ERROR
will only be activated after several unsuccessful measuring attempts.
Therefore, typical short-term disturbances of the measurement (e.g., switching on of a pump) will not activate the alarm.
An alarm output with the switching con
→
- -
→
+ and of the type
NON-HOLD
will be activated with each change of the
flow direction for approx. 1 s (see Fig. 15.2).
An alarm output with the switching condition
+
→
- -
→
+
and of the type
HOLD
will be active after the first change of the flow
direction. They can be switched back by pressing key C three times (see Fig. 15.2).
0
0
Fig. 15.2: Behavior of a relay when the flow direction changes
If there is an internal adaptationto changing measuring conditions, e.g., to a considerable rise of the medium temperature,
the alarm will not switch. Alarm outputs with the switching condition
OFF
will be set automatically to the switching function
NO Cont.
.
15.6.5 Indication of the Alarm State
After the configuration of the alarm outputs and during the measurement, the state of the alarms can be indicated. This
function is activated in the program branch
Special Funct.\SYSTEM settings\Dialogs/Menus
. It is recommend-
ed to activate this function if the alarm outputs often have to be reconfigured.
Select the menu item
SHOW RELAIS STAT
. Select
on
to activate the indication of the
alarm state.
If the indication of the alarm state is activated, the state of the alarm output will be indicated after the configuration of the
alarm output:
The indication of the alarm state is structured as follows:
RX =
, where
is a pictogram according to Tab. 15.6.
It is possible to repeat the configuration of the alarm outputs by pressing key C. If the con-
figuration of the alarm outputs is complete, press ENTER. The main menu will be dis-
played.
If the indication of the alarm state is activated, it is possible to show the alarm state during the measurement. Press key
to scroll through the upper line and
to scroll through the lower line until the alarm state is indicated.
Note!
There is no visual or acoustic indication of alarm output switching.
type
HOLD
reset of the alarm
(3x key C)
type
NON-HOLD
approx. 1 s
SHOW RELAIS STAT
off
>ON<
