Siemens SIPROCESS GA700 - Page 258

Alarm, error, and system messages
7.2 OXYMAT 7 message list
Operating with the Local User Interface
258 Operating Manual, 06/2017, A5E31930478-05
Message
Cause
Remedy
No.
Text
11 Maximum temperature exceeded.
Heaters turned off automatically.
Safety function
• Ambient temperature too high
• One or more heater control loops
faulty
• Check ambient temperature
• Check the other messages includ-
ing the logbook and act accord-
ingly
15 Sample gas pressure outside
tolerance
• Pressure sensor faulty
• Reference gas open, sample gas
input/output closed
• Set sample gas pressure to per-
mitted range.
• If sample gas input/output is
closed, the reference gas must be
turned off.
• Replace analyzer module
18 Reference gas pressure too low
• Reference gas pressure - sample
gas pressure < 2 000 hPa
• Sample gas path closed
• Reference gas path leaking
• Check pressure of reference gas
source
• Check flow of reference gas, see
operating instructions.
22 Calibration tolerance exceeded at
zero point
• Zero gas changed, setpoint faulty
• Incorrect reference gas
• Drift probe
• Check setpoint
• Check reference gas
• Replace analyzer module
23 Validation tolerance exceeded at
zero point
Calibration successful Execute zero point calibration
24 Calibration tolerance exceeded at
span point
• Span gas changed, setpoint faulty
• Incorrect reference gas
• Drift probe
• Check setpoint
• Check reference gas
• Replace measuring head
25 Validation tolerance exceeded at
span point
Calibration successful Execute span calibration
27 Signal frequency changed Frequency change executed Normalization required; contact Ser-
vice if necessary
28 Control reserve used up Difference of O
2
concentration be-
tween zero gas and reference gas
too large.
• Check zero gas, reference gas
pressure
• Carry out zero and full-scale val-
ue calibrations
29 to
32
Zero drift MR1 to MR4 outside
tolerance
• Gas line dirty, gas cooler faulty
• Gas lines leaking
• Incorrect zero gas or setpoint
faulty
• Check gas preparation, e.g.,
check filter
• Check gas lines for leaks
• Check setpoint
33 Measured value greater than full-
scale value
• Sample gas concentration too
high
• Sample gas pressure too
high/outside pressure correction
range
• Check sample gas concentration
• Check sample gas pressure
• Execute span gas calibration
34 Analyzer module temperature not
in permissible range
Device is operated outside the per-
mitted ambient temperature range
Check ambient temperature