Endress+Hauser Liquistation CSF39, Operating Instructions Manual

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Liquistation CSF39 Operation
Hauser 55
Heartbeat and NAMUR category
The Heartbeat status indicates the sensor or device condition while the NAMUR categories
(F, C, M, S) assess the reliability of the measured value. The two conditions can correlate
but do not have to.
• Example 1
• The number of remaining cleaning cycles for the sensor reaches 20% of the defined
maximum number. The Heartbeat symbol changes from to . The measured value
is still reliable so the NAMUR status signal does not change.
• If the maximum number of cleaning cycles is exceeded, the Heartbeat symbol changes
from to . While the measured value can still be reliable, the NAMUR status signal
changes to M (maintenance required).
• Example 2
The sensor breaks. The Heartbeat status changes immediately from to and the
NAMUR status signal also changes immediately to F (failure).
10.1.2 Device status
Icons on the display alert you to special device states.
Icon Location Description
Header bar Diagnostic message "Failure"
Header bar Diagnostic message "Maintenance request"
Header bar Diagnostic message "Check"
Header bar Diagnostic message "Out of specification"
Header bar Fieldbus or TCP/IP communication active
Header bar Hold active (for sensors)
At measured value Hold for the actuator (current output, limit switch etc.) is active
At measured value
1)
An offset has been added to the measured value
At measured value Measured value in "Bad" or "Alarm" state
At measured value Automatic temperature compensation active (for sensors)
At measured value Manual temperature compensation active (for sensors)
Header bar Simulation mode active or Memocheck SIM connected
At measured value The measured value is influenced by a simulated value
At measured value The displayed measured value is simulated (for sensors)
After the channel number Heartbeat diagnostics: condition of sensor is good
After the channel number Heartbeat diagnostics: condition of sensor is bad
After the channel number Heartbeat diagnostics: condition of sensor is OK
Header bar Controller is active
1) Only pH or ORP measurement
If two or more diagnostic messages occur simultaneously, only the icon for the
message with the highest priority is shown on the display (for the order of priority
according to NAMUR, →  129).
10.1.3 Assignment views
Assignment views, e.g. Channel assignment view , appear as the last function in many
sections of the menu. You can use this function to see which actuators or functions are
connected to an input or output. The assignments appear in hierarchical order.