Xylem DIQ/S 281, Operating Manual

Page: 126 / 148

Outputs DIQ/S 281
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 The linked sensor does not provide any valid measured value
(display of
Init
,
Error
,
"-----"
, or
OFL)
 Communication with the DIQ/S 281 is interrupted for more than 2 minutes.
 The supply voltage for the DIQ/S 281 is too low.
 In the function
Recorder
, the measured value of the linked sensor is outside
the range between
Start value
and
End value
.
Freezing the
conditions of the
outputs
Irrespective of the behavior in case of error that was defined, the following situ-
ations cause the conditions of the outputs to be frozen:
 The linked sensor is in the maintenance condition
(display of
Cal
,
Clean
, or flashing measured value).
 Communication with the DIQ/S 281 is temporarily interrupted. After an inter-
ruption of 2 minutes the output changes to the behavior defined for error.
Restoring the
normal functioning
The relay or current output automatically returns to its normal condition as soon
as all errors have been eliminated and all conditions that caused the freezing of
the outputs were eliminated.
6.9.2 Behavior in non-operative condition
An output is non-operative when no function is activated for the output.
An output becomes non-operative in case of
 Power failure
(As soon as the supply voltage is sufficient again, the non-operative condition
of the outputs ends. The outputs function as specified by the user again.)
 Erasing a link to a sensor
 Changing the
Messmodus
sensor setting for a linked sensor
 Changing the
Messbereich
sensor setting for a linked sensor
Settings in the
non-active
condition
Before editing sensor settings a note appears on the display to
inform you that links will be erased when you change the
Messmodus
or
Messbereich
sensor setting.
Current output Relay output
Current: 0 A
Relay: Open