78
8024250/18HT/V2-0/2020-12| SICK
O P E R A T I N G I N S T R U C T I O N S | ZIRKOR200 Ex-G
Subject to change without notice
9
STATUS MESSAGES
9
Status messages
9.1
Error messages
Error message
Relay contact Analog signal
output
Description
Hardware error
1-7
System error,
open
2.00 mA, if not
set otherwise
The error can occur at any time and signals a fault in one of the electronic
components. The O
2
measuring probe heater is switched off. Contact one
of the Sick Service points if the fault cannot be rectified by switching the
system off and on again.
Open circuit
Thermoelement
System error,
open
2.00 mA, if not
set otherwise
The error can occur at any time and signals an interruption in the thermo-
element circuit. The O
2
sensor heating is switched off. It can be reset by
the user when the error cause has been eliminated.
Possible causes:
Contact problems of the thermoelement cable on the
terminal points of the control unit and/or analyzer unit, connection cable
damaged or thermoelement defective.
O
2
measuring
probe temperature
not reached
System error,
open
2.00 mA, if not
set otherwise
The error can occur during the heating process (max. 90 minutes) of the
O
2
sensor. The O
2
sensor heating is switched off. It can be reset by the
user to start a new heating attempt.
Possible causes:
Fuse F2 defective, contact problems of O
2
sensor
heating cable on the terminal points of the control unit and/or analyzer
unit, connection cable damaged, short circuit thermoelement, reference
air flow volume greater than 60 l/h, power voltage too low, flow volume
too high and/or temperature in process too low, electronics error.
O
2
measuring
probe temperature
too low
System error,
open
2.00 mA, if not
set otherwise
The error can occur during measurement operation and indicates that the
O
2
sensor temperature has dropped 20 °C (68 °F) below the setpoint
temperature. The O
2
sensor heating is switched off. It can be reset by the
user to start a new heating attempt.
Possible causes:
Fuse F2 defective, contact problems of O
2
sensor
heating cable on the terminal points of the control unit and/or analyzer
unit, connection cable damaged, short circuit thermoelement, reference
air flow volume greater than 60 l/h, power voltage too low, flow volume
too high and/or temperature in process too low, electronics error.
O
2
measuring
probe temperature
too high
System error,
open
2.00 mA, if not
set otherwise
The error can occur during measurement operation and indicates that the
O
2
sensor temperature has risen 20 °C (68 °F) above the setpoint
temperature. The O
2
sensor heating is switched off. It can be reset by the
user to start a new heating attempt.
Possible causes:
Process temperature too high, O
2
measuring probe
heater cable incorrectly connected to the control unit, electronics error.
Open circuit
O
2
sensor
System error,
open
2.00 mA, if not
set otherwise
The error can occur at any time and signals an interruption in the circuit
of the O
2
sensor. It can be reset by the user when the error cause has
been eliminated.
Possible causes:
Contact problem of the O
2
connection cable on the
terminal points of the control unit and/or analyzer unit, connection cable
defective, contact problem of the inner part of the measuring probe to the
O
2
sensor.
O
2
sensor calibra-
tion failed
System error,
open
O
2
sensor adjustment failed for one of the following reasons. It can be
reset by the user; all entries subordinate to this error are then also reset.
Test gas flow rate
too low
System error,
open
The error can only occur during an O
2
sensor adjustment and signals an
insufficient test gas flow during the adjustment. It can be reset by the
user. A new successful adjustment also resets the error.
Possible causes:
Test gas cylinder empty, test gas flow volume incorrectly
set, test air flow volume incorrectly set, instrument air supply to the
system not available.
