Fault Messages - Siemens OXYMAT 64 Operating Instructions Manual

6.6.3

Fault messages

Defects in the hardware or changes in the device parameters which would result in the
device being unable to make reliable measurements lead to a fault message.
appears in the status line if the device is in measuring mode.
The faults listed below result in a fault message (output in the display) and are signaled
externally if a corresponding relay has been configured using function 71. Immediate
remedial measures should always be carried out here by qualified maintenance personnel.
Function 87 can be used to switch off (deactivate) each fault individually.
Table 6- 3 Possible fault messages
No. Fault message
S1 Parameter memory test
Q failed
S4 External fault message
S5 Temperature of O
Q too high or too low
S8 Signal of pressure sensor
Q outside tolerance
S10 24 h RAM/Flash check
Q
S12 Mains power supply
Q
S13 Hardware / line frequency
Q
S14 Measured value greater
than full-scale value (+ 5%)
S15 Calibration aborted
Q
S16 Sample gas flow too low
OXYMAT 64
Operating Instructions, 06/2008, A5E00880383-03
Possible cause
EPROM contains incorrect or
incomplete data in the working area
External signal
sensor Temperature control of sensor faulty
2
Sample gas flow is too high (>>
125 ml/min)
Flow resistance too large in the
sample gas outlet line
RAM or Flash-PROM
Line voltage outside tolerance
Crystal or ext. ADC faulty
Line frequency outside tolerance
O content in sample gas too high as
2
result of leak in sample gas path
Sample gas pressure too high
Fault during calibration via binary
input
Fault if the analyzer is in Autocal
mode
Pressure in sample gas supply line
too low
Repair, maintenance and servicing
6.6 Removing faults
Remedy
Carry out RESET; if the fault message S1 is
still displayed:
1. Load user data (function 75);
if the fault message S1 is still displayed:
2. Inform Service
Important: leave analyzer in operation in
order to facilitate fault diagnostics by the
servicing personnel!
Check; function 72 must be configured
accordingly
Set flow to 125 ml/min
Reduce flow resistance until sample gas
pressure is below 100 hPa (rel.)
Replace motherboard; inform service
department
Line voltage must be within the specified
limits according to the type nameplate
Replace motherboard
Connect power supply stabilizer
Carry out leak test
Check sample gas pressure and reduce if
necessary
Eliminate the cause of the fault message
Provide sufficient pressure
(> 2000 hPa)
"
Fault" then
111