Endress+Hauser Liquiline System CA80AL, Руководство по эксплуатации

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Diagnostics and troubleshooting Liquiline System CA80AL
128 Hauser
No. Message Factory settings Tests or remedial action
S
1)
D
2)
F
3)
937 Controlled variable S On Off Controller input warning
Status of the controller variable is not OK
‣
Check application.
938 Controller setpoint S On Off Controller input warning
Status of set point is not OK
‣
Check application.
939 Control. disturbance S On Off Controller input warning
Status of disturbance variable is not OK
‣
Check application.
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