Troubleshooting - Siemens SITRANS P Operating Instructions Manual

ID Symbols Message
St Safety validation mode
Configuration warning
(yellow)
SU Safety critical device error
Maintenance alarm
12.3

Troubleshooting

Symptom Cause of error
Display empty, No or incorrect supply voltage
no transmission
pulses
Display shows Value too large to appear on the display
"#####" instead
of the current
measured value
Below you can find explanations on how to correct problems when enabling Functional Safety.
Information mes‐ Cause of error
sage on the dis‐
play
INVALID CFG Write protection via user PIN disabled.
ACCES
INVALID CFG Wrong characteristic curves selected.
TRNFK
INVALID CFG Loop current fixed. Loop test or multidrop
mode are enabled.
LOOPT
INVALID CFG Device in simulation mode: Pressure meas‐
ured value is simulated.
SIMUL
INVALID CFG Device in simulation mode: Diagnostics are si‐
mulated.
STSIM
INVALID CFG Factory settings for Functional Safety are faul‐
ty.
PARAM
SITRANS P320/P420 with 4 to 20 mA/HART
Operating Instructions, 11/2019, A5E44852162-AC
Cause/Remedy
Device is in safety validation mode.
Complete the functional test and confirm that it was successful in the
Functional Safety wizard.
Acknowledge the error in menu "Functional Safety". If the device
does not display an error, repeat the safety start up.
Acknowledging safety-related errors (Page 174)
If the problem persists, contact Technical Support.
Remedy
Check the voltage at the terminals, the connections and
the wiring.
Adjust the unit so that a lower value can be displayed,
e.g. by selecting bars instead of millibars.
Pressure units [01] (Page 106)
Remedy
Activate write protection via the user PIN.
Enable user PIN (Page 139)
Select one of the following characteristic curves:
● Linear, proportional to pressure (PRESS).
● Linear, proportional to level (LEVEL).
● Proportional to flow rate, two-step linear up to the
application point (VSLN2 or MSLN2).
To return to normal operation, disable the loop test or
multidrop mode.
Loop test [31] (Page 141)
Disable simulation to return to normal operation.
Simulate constant pressure values (Page 147)
Disable simulation to return to normal operation.
Simulate diagnostics (Page 148)
Replace the device.
Diagnostics and troubleshooting
12.3 Troubleshooting
197