Ceraphant PTP31B, PTP33B Diagnostics and troubleshooting
Endress+Hauser 41
9.2.2 List of diagnostic events
Diagnostic event Cause Corrective measure
Code Description
0 No error - -
C431
1)
Invalid position adjustment The calibration performed would cause the
sensor nominal range to be exceeded or
undershot.
Position adjustment + parameter of the current output
must be within the sensor nominal range
• Check the position adjustment (see the ZRO
parameter)
• Check the measuring range (see the STU and STL
parameters)
C432
alternating with
Ou1
1)
Invalid position adjustment,
output 1
The calibration performed causes the
switch points to be outside the sensor
nominal range.
Position adjustment + parameter of the hysteresis and
window function must be within the sensor nominal
range
• Check the position adjustment (see the ZRO
parameter)
• Check the switch point, switchback point for
hysteresis and window function
C432
alternating with
Ou2
1)
Invalid position adjustment,
output 2
The calibration performed causes the
switch points to be outside the sensor
nominal range.
Position adjustment + parameter of the hysteresis and
window function must be within the sensor nominal
range
• Check the position adjustment (see the ZRO
parameter)
• Check the switch point, switchback point for
hysteresis and window function
C469
alternating with
OU1 or OU2
Switch points output 1 or 2
violated
Switch point ≤ switchback point Check switch points at output
C485 Simulation active During simulation of the switch output or
current output, the device issues a warning
message for the duration of the simulation.
Switch off simulation
F270
2) 3)
Overpressure/low pressure Overpressure or low pressure present • Check the process pressure
• Check sensor range
• Restart the device
Defect in electronics/sensor Defect in electronics/sensor Replace device
F437 Incompatible configuration Invalid device configuration • Restart the device
• Reset device
• Replace device
F804 Overload at switch output 1
or 2 or both switch outputs
Load current > 250 mA per per output
4)
Increase load resistance at switch output
Switch output defective • Check output circuit
• Replace device
S140 Sensor signal outside of
permitted ranges
Overpressure or low pressure present Operate device in the specified measuring range
Sensor defective Replace device
S510 Turn down violated A change in the span results in a violation
of the turn down (max. TD 5:1)
Values for calibration (lower range value
and upper range value) are too close
together
• Operate device in the specified measuring range
• Check the measuring range
S803 Current loop 2 Impedance of load resistance at analog
output is too high
• Check the cabling and load at the current output.
• If the current output is not required, switch the
current output off via the configuration.
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