Liquiline CM44P Operation
Endress+Hauser 89
Menu/Setup/Outputs/Alarm relay or relay at channel no.
Function Options Info
Function Selection
• Off
• Limit switch
• Controller
• Diagnostics
• Cleaning
(sensor)
• Formula
(sensor)
Factory setting
• Alarm relays:
Diagnostics
• Other relays:
Off
The following functions depend on the option
selected.
These versions are illustrated individually in the
following sections to provide a clearer
understanding of the options.
Function = Off
Switches off the relay function and means no
further settings are required.
Outputting the status of a limit switch
Function = Limit switch
Function Options Info
Source of data Selection
Limit switch 1 ... 8
Factory setting
None
Select the limit switch via which the status of the
relay is to be output.
The limit switches are configured in the menu:
Setup/Additional functions/Limit switches.
Use the ALL and NONE soft keys to select
or deselect all the limit switches in one go.
Hold behavior Selection
• Freeze last value
• Fixed value
• Ignore
Factory setting
Ignore
Outputting the manipulated variable of a controller
To output a controller manipulated variable via a relay, the relay is modulated. The relay is
energized (pulse, t
1
) and is then de-energized (interval, t
0
).
Function = Controller
Function Options Info
Source of data Selection
• None
• Controller 1
• Controller 2
Factory setting
None
‣
Select the controller that should act as the
data source.
Operating mode Selection
• PWM
• PFM
Factory setting
PWM
PWM=pulse width modulation
PFM=pulse frequency modulation
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