Installation and Operation Manual - DustEx Status Messages
Doc.-ID: COM_OXI_Dust_11022020 17
6 Status Messages
6.1 Error Messages
Error
Message
Relay
contact
O
2
signal
output
Description
Hardware
error 1-7
System
error,
open
2.00 mA,
when not set
differently
The error can occur at any time and signalizes a failure of one of the
electronic components. The O
2
sensor heater is switched off. Contact a
service point, if the error returns after restarting the system.
Open circuit
thermocoupl
e
System
error,
open
2.00 mA,
when not set
differently
The error can occur at any time and signals a break in the circuit of the
thermocouple. The O
2
sensor heater is switched off. Once the fault has
been corrected, the error can be reset.
Possible causes: contact problems of the thermocouple wire to the
terminal points of the electronics or the sensor, sensor cable is damaged or
the thermocouple is defective.
O
2
probe
set point
temp. not
reached
System
error,
open
2.00 mA,
when not set
differently
The error can occur during the heating of the O
2
sensor (Max. 90 minutes).
The O
2
sensor heater is switched off. An error reset can be carried out by
the user in order to restart the heating process.
Possible causes: F2 fuse defective, contact problem of the O
2
sensor
heater wire to the terminal points of the electronics or the sensor, sensor
cable is damaged, short-circuited thermocouple, reference air flow greater
than 60 l / h, power supply too low, flow rate too high and / or temperature
in the process too low , electronic failure.
O
2
probe
temperature
too low
System
error,
open
2.00 mA,
when not set
differently
The error can occur during measurement, indicating that the O
2
sensor
temperature drops 20 ° C (68 ° F) below the set point temperature. The O
2
sensor heater is switched off. An error reset can be carried out by the user
in order to restart the heating process.
Possible causes: F2 fuse defective, contact problem of the O
2
sensor
heater wire to the terminal points of the electronics or the sensor, sensor
cable is damaged, short-circuit thermocouple, reference air flow greater
than 60 l / h, power supply too low, flow rate too high and / or temperature
in the process too low, electronic failure.
O
2
probe
temperature
too high
System
error,
open
2.00 mA,
when not set
differently
The error can occur during measurement, indicating that the O
2
sensor
temperature has risen 20 ° C (68 ° F) above the set point temperature. The
O
2
sensor heater is switched off. An error reset can be carried out by the
user in order to restart the heating process.
Possible causes: Process temperature too high, O
2
sensor cable to the
transmitter connected incorrectly, electronic failure.
Open circuit
O
2
sensor
System
error,
open
2.00 mA,
when not set
differently
The error can occur at any time and signals a break in the circuit of the O
2
sensor. Once the fault has been corrected, the error can be reset.
Possible causes: contact problem of the O
2
sensor wire to the terminal
points of the electronics and the probe, probe cable is defective, contact
problem of the probe the inner part of the O
2
sensor.
O
2
sensor
calibration
failed
System
error,
open
O
2
sensor calibration has failed for one of the following reasons. An error
reset can be carried out by the user. All corresponding entries are then
reset as well.
Test gas
flow rate too
low
System
error,
open
The error can occur during an O
2
sensor calibration and signals an
insufficient test gas flow. An error reset can be carried out by the user. A
successful re-calibration also resets the error.
Possible causes: test gas bottle empty, test gas flow incorrectly set,
instrument air supply to the system does not exist.
Test gas
flow rate too
high
System
error,
open
The error can occur during an O
2
sensor calibration and signals a test gas
flow which is too high. An error reset can be carried out by the user. A
successful re-calibration also resets the error.
Possible causes: test gas bottle empty, test gas flow incorrectly set,
instrument air supply to the system does not exist.
O
2
sensor
offset too
low
System
error,
open
The error can only occur only during an O
2
sensor calibration. An error
reset can be carried out by the user. A successful re-calibration also resets
the error.
Possible causes: inadequate reference air supply, process pressure is too
high, incorrect test gas, O
2
sensor defective.
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