Liquiline CM44P Operation
Endress+Hauser 91
Function = Controller
Function Options Info
Maximum frequency
Operating mode = PFM
1 to 180 min
-1
Factory setting
60 min
‐1
Maximum number of pulses per minute
The controller calculates the pulse duration
based on this setting.
Hold behavior Selection
• Freeze last value
• Fixed value
• Ignore
Factory setting
Ignore
Outputting diagnostic messages via the relay
If a relay is defined as a diagnostic relay (Function = Diagnostics), it works in the "fail-
safe mode".
This means that the relay is always energized ("normally closed", n.c.) in the basic state if
an error is not present. In this way it can also indicate a drop in voltage, for example.
The alarm relay always works in the failsafe mode.
You can output two categories of diagnostic messages via the relay:
• Diagnostic messages from one of the 4 Namur classes → 137
• Diagnostic messages which you have individually assigned to the relay output
A message is individually assigned to the relay output at 2 specific points in the menu:
• Menu/Setup/General settings/Extended setup/Diagnostics settings/Diag. behavior
(device-specific messages)
• Menu/Setup/Inputs/<Sensor>/Extended setup/Diagnostics settings/Diag. behavior
(sensor-specific messages)
Before being able to assign the relay output to a special message in Diag. behavior
you must first configure Outputs/Relay x:y or /Alarm relay/Function = Diagnostics .
Function = Diagnostics
Function Options Info
Operating mode Selection
• as assigned
• Namur M
• Namur S
• Namur C
• Namur F
Factory setting
• Relay:
as assigned
• Alarm relays:
Namur F
as assigned
If this option is selected, the diagnostic messages
which you have individually assigned to the relay
are output via the relay.
Namur M ... Namur F
If you decided to use one of the Namur classes,
all the messages that are assigned to the
individual class are output via the relay. You can
also change the Namur class assignment for
every diagnostic message.
(Menu/Setup/General settings/Extended
setup/Diagnostics settings/Diag. behavior or
Menu/Setup/Inputs/<Sensor>/Extended
setup/Diagnostics settings/Diag. behavior)
Attributed diagnostic messages
Operating mode = as
assigned
Read only All the messages assigned to the relay output
appear on the display. You do not have the
option of editing the information here.
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