Endress+Hauser Ceraphant PTP31B Operating Instructions Manual page 41

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