UMG70XV3-4EN 12.01.2009 163
18 Outputs
Alarm outputs with switching condition ERROR will be activated only after several unsuc-
cessful measuring attempts. Therefore, typical short-term disturbances of the measure-
ment (e.g. switching on of a pump) will not activate the alarm.
Alarm outputs with switching condition +- -+ and of type NON-HOLD will be activated
with each change of the flow direction for approx. 1 s (see Fig. 18.2).
Alarm outputs with switching condition +- -+ and of type HOLD will be activated after
the first change of the flow direction. They can be switched back by pressing key C three
times (see Fig. 18.2).
Fig. 18.2: Behavior of a relay when the flow direction changes
If there is an adaptation to changing measuring conditions, e.g. to a considerable rise of
the medium temperature, the alarm will not switch. Alarm outputs with switching condi-
tion OFF will be set automatically to the switching function NO CONT.
18.6.5 Alarm State Indication
The alarm state can be displayed during measurement. This function is activated in SPE-
CIAL FUNCTION\SYSTEM SETTINGS\DIALOGS/MENUS.
Scroll during measurement with key until the alarm state is displayed in the upper line.
RX = , where is a pictogram according to Table 18.8.
Note! There is no visual or acoustic indication of alarm switching.
Select the menu item SHOW RELAIS STAT. Select ON to
activate the display of the alarm state.
example: R1 =
D u r c h f l u s s
+
-
0
A l a r m t y p : H A L T E N D
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
D u r c h f l u s s
+
-
0
A l a r m t y p : N I C H T H A L T E N D
c a . 1 s
flow
type NON-HOLD
type HOLD
reset of the alarm
(3x key C)
approx. 1 s
flow
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