Maintenance And Fault Rectification; Maintenance; Rectify Faults - Vega VEGADIF 65 Operating Instructions Manual

8 Maintenance and fault rectification

Maintenance

Reaction when malfunc-
tion occurs
Causes of malfunction
Fault rectification
24 hour service hotline
Check the 4 ... 20 mA
signal
62
8 Maintenance and fault rectification
8.1 Maintenance
If the device is used properly, no special maintenance is required in
normal operation.
In some applications, product buildup on the separating diaphragms
can influence the measuring result. Depending on the sensor and
application, take precautions to ensure that heavy buildup, and espe-
cially a hardening thereof, is avoided.
8.2 Rectify faults
The operator of the system is responsible for taking suitable meas-
ures to rectify faults.
VEGADIF 65 offers maximum reliability. Nevertheless, faults can oc-
cur during operation. These may be caused by the following, e.g.:
•
Sensor
•
Process
•
Voltage supply
•
Signal processing
The first measures to be taken are to check the output signals as well
as to evaluate the error messages via the display and adjustment
module. The procedure is described below. Further comprehensive
diagnostics can be carried out on a PC with the software PACTware
and the suitable DTM. In many cases, the causes can be determined
and the faults rectified this way.
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 manned 7 days a week round-the-clock. Since we offer
this service worldwide, the support is only available in the English
language. The service is free, only standard call charges are incurred.
Connect a multimeter in the suitable measuring range according to
the wiring plan.
Error code Cause
4 ... 20 mA Level fluctuations
signal not
stable
4 ... 20 mA Wrong connection to
signal miss- voltage supply
ing
No power supply
Operating voltage
too low or load resist-
ance too high
Rectification
– Set the integration time via the
display and adjustment module or
PACTware
– Check connection according to
chapter "Connection steps" and
if necessary, correct according to
chapter "Wiring plan"
– Check cables for breaks; repair if
necessary
– Check, adapt if necessary
VEGADIF 65 • 4 ... 20 mA