8
Diagnostics
Warning:
Alarm signalling devices must have an independent power supply to permit alarm
signalling in the event of a power failure!
8.1
Limit alarm
An alarm condition exists when the measured value
– exceeds the upper limit or
– stays below the lower limit
for a period which exceeds the alarm delay setting specified in the “ConF” menu.
Effect:
●
Alarm LED is on
●
Alarm contact (41 / 42) is closed
8.2
Errors
Editing error
If values outside of the permissible value range are entered when editing a configuration setting,
the “ERR” symbol on the display flashes briefly.
Temperature error
A temperature error is signalled as a sensor error.
Effect:
●
Alarm LED is on
●
Alarm contact (41 / 42) is closed
●
“ERR” symbol is displayed
Diagnostics
liquisys CUM 252
40
Hauser
