Troubleshooting; Troubleshooting Functional Security - Siemens SITRANS Series Operating Instructions Manual

Diagnostics and troubleshooting

12.3 Troubleshooting

12.3 Troubleshooting
12.3.1

Troubleshooting Functional Security

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
190
Remedy
Activate write protection via the user PIN.
Enable user PIN (Page 134)
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 137)
Disable simulation to return to normal operation.
Simulate constant pressure values (Page 144)
Disable simulation to return to normal operation.
Simulate diagnostics (Page 145)
Replace the device.
Operating Instructions, 06/2018, A5E44852162-AA
SITRANS P320/P420 (mA/HART)