VEGA WEIGHTRAC 31 Profibus PA - Manual (Page 62)

62
8 Diagnostics and service
WEIGHTRAC 31 • Profibus PA
43837-EN-131119
Error Cause Rectification
Output signal
missing
Electrical connec-
tion faulty
Check connection according to
chapter "Connection steps" and if
necessary, correct according to chap-
ter "Wiring plan"
Voltage supply
missing
Check cables for breaks; repair if nec-
essary
Operating voltage
too low
Check, adapt if necessary
The following table describes possible faults that may not generate an
error message:
Error Cause Rectification
Instrument dis-
plays loading of
the conveyor belt.
However, the belt
is empty.
Loading fluctua-
tions
Carry out a zero rate determination
Instrument sums
up the material
quantity. However,
belt is empty.
Contamination,
buildup on the
conveyor belt
Activate leak volume suppression
Conveyor belt was
changed - belt
connections
Activate leak volume suppression
Inaccurate meas-
ured values
Changing product
density
Carry out linearization
Depending on the reason for the fault and the measures taken, the
steps described in chapter "Setup" must be carried out again or must
be checked for plausibility and completeness.
Should these measures not be successful, please call in urgent cases
the VEGA service hotline under the phone no. +49 1805 858550.
The hotline is also available outside normal working hours, seven
days a week around the clock.
Since we offer this service worldwide, the support is provided in
English. The service itself is free of charge, the only costs involved are
the normal call charges.
8.4 Exchanging the electronics module
If the electronics module is defective, it can be replaced by the user.
In Ex applications, only instruments and electronics modules with ap-
propriate Ex approval may be used.
If there is no electronics module available on site, the electronics
module can be ordered through the agency serving you. The electron-
ics modules are adapted to the respective sensor and differ in signal
output or voltage supply.
The new electronics module must be loaded with the default settings
of the sensor. These are the options:
Additional interferences
Reaction after fault recti-
fication
24 hour service hotline