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6 Diagnostics and servicing
VEGABAR 18 • Two-wire 4 … 20 mA
55575-EN-200327
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.
6.3 Diagnosis, fault messages
Connect a multimeter in the suitable measuring range according to
the wiring plan. The following table describes possible errors in the
current signal and helps to eliminate them:
Error
Cause
Rectification
4 … 20 mA signal missing
Electrical connection faulty
Check connection, correct, if necessary
Voltage supply missing
Check cables for breaks; repair if nec-
essary
Operating voltage too low, load resist-
ance too high
Check, adapt if necessary
Current signal greater than
22 mA, less than 3.6 mA
Sensor electronics defective
Replace device or send in for repair de-
pending on device version
6.4 How to proceed if a repair is necessary
You can find an instrument return form as well as detailed information
about the procedure in the download area of our homepage. By doing
this you help us carry out the repair quickly and without having to call
back for needed information.
In case of repair, proceed as follows:
•
Print and fill out one form per instrument
•
Clean the instrument and pack it damage-proof
•
Attach the completed form and, if need be, also a safety data
sheet outside on the packaging
•
Ask the agency serving you to get the address for the return ship-
ment. You can find the agency on our homepage.
4 … 20 mA signal