Samson 3375, Mounting And Operating Instructions, Page: 74 / 130

9-2 EB 8332-2 EN
Malfunctions
Comment on plausibility error
Due to an invalid combination of interacting parameters in the configuration level, a plausi -
bility error arises which is indicated by PLAU blinking on the display. A correction of the in-
teracting parameters clears the error message.
Causes of plausibility error
− Invalid application selected (when Code c01 = C):
"Pt 1000" (Code c01 = C ) is set as the source (only available for PID controller applica-
tion, Code 6 = PID ). Afterwards, the application is changed to "Positioner" (Code 6 =
POSI ) or "Temperature closed-loop control upon input signal failure" (Code 6 = POSF ),
causing a plausibility error.
Recommended action: Set Code 6 to PID controller.
− Invalid application selected (when Code c01 = VIA):
"Interface" is set as the source (Code c01 = VIA ). Afterwards, the application is changed
to "Temperature closed-loop control upon input signal failure" (Code 6 = POSF ), causing
a plausibility error.
Recommended action: Set Code 6 to Positioner or PID controller.
− Invalid value for lower range value (Code c02):
A value <1.0 mA or <0.5 V is set in Code c02 combined with an active detection of in -
put signal failure (Code c31 = YES ).
Recommended action: Set Code c31 to NO or c02 to a value ≥1.0 mA or ≥0.5 V.
− Invalid value for lower range value during fast configuration (FCO):
Lower range value (Code c02) and active detection of input signal failure (Code c31 =
YES ) are a valid combination. However, a plausibility error arises if an input signal from
0 to 20 mA or 0 to 10 V is selected through fast configuration ( FCO ).
Recommended action: Set Code c02 to a value ≥1.0 mA or ≥0.5 V.
− Invalid set point (Code c81):
The set point (Code c81) is not within the range defined by the lower (Code c86) and up -
per adjustment limits (Code c87).
Recommended action: Set the set point (Code c81) or the adjustment limits (Code c86/
c87) so that the set point is within the adjustment limits.
− Invalid limits of process variable range (Code c88/c89):
The set point (Code c81) is within the range defined by the lower (Code c86) and upper
adjustment limits (Code c87). The lower limit of process variable range (Code c88) has a
greater value than the lower adjustment limit (Code c86) or the upper limit of process
variable range (Code c89) has a lower value than the upper adjustment limit (Code c87).