KROHNE OPTISOUND 3020C 2wire EN - Manual (Page 35)

?
Current signal greater than 22 mA or less than 3.6 mA
l Electronics module defective
à
Exchange instrument or return it for repair
In Ex applications, the regulations for the wiring of intrinsically
safe circuits must be observed.
?
E013
l no measured value available
à
sensor in boot phase
à
sensor does not find an echo, e.g. because of faulty
installation or incorrect parameter adjustment
?
E017
l adjustment span too small
à
Carry out a fresh adjustment and increase the distance
between min. and max. adjustment
?
E036
l no operable sensor software
à
carry out a software update or return instrument for
repair
?
E041
l hardware error, electronics defective
à
Exchange instrument or return it for repair
7.3 Exchanging the electronics
If the electronics module is defective, it can be replaced by the
user.
In Ex applications, only instruments and electronics modules
with appropriate Ex approval may be used.
Fault messages via the indi-
cating/adjustment module
OPTISOUND 3020 C - 4 … 20 mA/HART 35
Maintenance and fault rectification
30507
-EN
-050914