VEGA VEGACAL 67 Profibus PA - Manual (Page 33)

33
8 Maintenance and fault rectification
VEGACAL 67 • Profibus PA
31759-EN-130917
8 Maintenance and fault rectification
8.1 Maintenance
If the instrument is used properly, no special maintenance is required
in normal operation.
8.2 Rectify faults
The operator of the system is responsible for taking suitable meas-
ures to rectify faults.
VEGACAL 67 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 available to you 7 days a week round-the-clock. Since
we offer this service world-wide, the support is only available in the
English language. The service is free of charge, only the standard
telephone costs will be charged.
The following table describes possible errors and helps to remove
them:
Error Cause Rectification
When an addi-
tional instrument
is connected, the
segment fails.
Max. supply
current of the seg-
ment coupler
exceeded
Measure the current consumption, re-
duce size of segment
Wrong pres-
entation of the
measured value in
Simatic S5
Simatic S5 cannot
interpret the num-
ber format IEEE
of the measured
value
Insert converting component from Sie-
mens
In Simatic S7 the
measured value
is always present-
ed as 0
Only four bytes
are consistently
loaded in the PLC
Use function component SFC 14 to
load 5 bytes consistently
Reaction when malfunc-
tions occur
Failure reasons
Fault rectification
24 hour service hotline
Checking Profibus PA