VEGA VEGAPULS 68 (≥ 2.0.0 - ≤ 3.8) 4 … 20 mA_HART two-wire - Manual (Page 52)

l N o power supply
à Check cables for breaks; repair if necessary
l O perating voltage too low or load resistance too high
à Check, adapt if necessary
? C urrent signal greater than 22 mA or less than 3.6 mA
l E lectronics module defective
à Exchange instrument or return instrument for repair
I n Ex applications, the regulations for the wiring of intrinsically safe
circuits must be observed.
? E 013
l
no measured value available
à sensor in boot phase
à Sensor does not find an echo, e.g. due to faulty installation or
wrong parameter adjustment
? E 017
l A djustment span too small
à Carry out a fresh adjustment and increase the distance
between min. and max. adjustment
? E 036
l
no operable sensor software
à Carry out a software update or send the instrument for repair
? E 041, E042, E043
l H ardware error, electronics defective
à Exchange instrument or return instrument for repair
D epending on the failure reason and measures taken, the steps
described in chapter "Set up" must be carried out again, if necessary.
8.3 Exchanging the electronics module
I f the electronics module is defective, it can be replaced by the user.
I n Ex applications only one instrument and one electronics module with
respective Ex approval may be used.
I f there is no electronics module available on site, one can be ordered
from the VEGA agency serving you.
T he new electronics module must be loaded with the settings of the
sensor. These are the options:
Fault messages via the
indicating/adjustment
module
Reaction after fault rec-
tification
Sensor serial number
52 VEGAPULS 68 • 4 … 20 mA/HART two-wire
8 M aintenance and fault rectification
29261
-EN
-090305