Liquiline System CA80NO
Diagnostics and troubleshooting
Hauser
127
No.
Message
Factory settings
Tests or remedial action
S
D
F
940
Process value
S
On
Off
Measured value out of specification
Uncertain measured value.
1.
Change the measuring range.
2.
Calibrate the system.
941
Process value
F
On
On
Measured value out of specification
Invalid measured value.
1.
Change the measuring range.
2.
Calibrate the system.
951 -
958
Hold active CH1 ..
C
On
Off
Output values and status of the channels are on
hold.
‣
Wait until the hold is deactivated again.
961 -
968
Diagnostic module 1
(961)
...
Diagnostic module 8
(968)
S
Off
Off
Diagnostic module is enabled
969
Modbus Watchdog
S
Off
Off
The device did not receive a Modbus telegram
from the master within the specified time. The
status of Modbus process values received is set to
invalid
970
Curr. input overload
S
On
On
Current input overloaded
The current input is switched off from 23 mA due
to overload and reactivated automatically when a
normal load is present.
971
Current Input low
S
On
On
Current input too low
At 4 to 20 mA, the input current is less than the
lower failure current.
‣
Check the input for short-circuiting.
972
Curr. input > 20 mA
S
On
On
Current output range exceeded
973
Current Input < 4 mA
S
On
On
Current output range undershot
974
Diagnostics confirm.
C
Off
Off
User has acknowledged the message displayed in
the measuring menu.
975
Device restart
C
Off
Off
Device reset
976
PFM/PWM value high
S
On
Off
Pulse frequency modulation: output signal
exceeded/undershot. Measured value outside the
specified range.
• Sensor in air
• Air pockets in assembly
• Incorrect flow to sensor
• Sensor fouled
1.
Clean sensor
2.
Check plausibility.
3.
Adjust the PFM configuration.
977
PFM/PWM value low
S
On
Off
978
ChemoClean Failsafe
S
On
On
No feedback signal detected within the configured
period.
1.
Check application.
2.
Check wiring.
3.
Extend the duration.
990
Deviation limit
F
On
On
Redundancy: limit value of percentage deviation
exceeded
991
CO2 conc. range
F
On
On
CO
2
concentration (degassed conductivity) outside
the measuring range
Содержание Liquiline System CA80NO
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Страница 116: ...Operation Liquiline System CA80NO 116 Endress Hauser 5 Connect the valve or pump ...
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