Liquisys M CPM223/253 Commissioning
Endress+Hauser 51
6.6.5 Monitoring functions
You can use the monitoring functions to define various alarms and configure output
contacts.
Each individual error can defined to be effective or not (at the contact or as an error current).
Moreover, the electrode can be checked for glass breakage or leak current (P1, P2, P7). In
the event of an alarm, a cleaning function can also be activated (F8).
You can only check for glass breakage or leak current and avail of the cleaning function
in the Plus package.
Alarm
Coding Field Setting range
(Factory settings, bold)
Display Info
F
ALARM function
group
Alarm function settings.
F1 Select contact type
Latch = latching contact
Momen = momentary contact
The contact type selected only applies to
the alarm contact.
F2 Select time unit
s
min
F3 Enter alarm delay
0 s (min)
0 to 2000 s (min)
Depending on the option selected in F2,
the alarm delay is entered in s or min.
F4 Select error current
22 mA
2.4 mA
This selection must be made even if all
error reporting is switched off in F5.
If "0-20 mA" was selected in O311,
"2.4 mA" may not be used.
F5 Select error
1
1 to 255
Here you can select all the errors which
should trigger an alarm.
The errors are selected via the error
numbers. Please refer to the table in
section 9.2 "System error messages" for the
meaning of the individual error numbers.
The factory settings remain in effect for all
errors not edited.
F6
Set alarm contact to
be effective for the
selected error
yes
no
If “no” is selected, all the other alarm
settings are deactivated (e.g. alarm delay).
The settings themselves are retained.
This setting only applies to the error
selected in F5.
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