33
10 Diagnostics and servicing
VEGAPULS C 11 • Two-wire 4 … 20 mA
58340-EN-200806
Sinceweoerthisserviceworldwide,thesupportisprovidedin
English. The service itself is free of charge, the only costs involved are
the normal call charges.
10.3 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 Rectication
4 … 20 mA signal not stable Fluctuating measured value Set damping
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
10.4 Status messages according to NE 107
The instrument features self-monitoring and diagnostics according
to NE 107 and VDI/VDE 2650. In addition to the status messages in
the following tables there are more detailed error messages available
under the menu item " Diagnostics" via the respective adjustment
module.
The status messages are divided into the following categories:
•
Failure
•
Function check
•
Outofspecication
•
Maintenance required
and explained by pictographs:
41 2 3
Fig. 22: Pictographs of the status messages
1 Failure - red
2 Outofspecication-yellow
3 Function check - orange
4 Maintenance required - blue
Failure: Due to a malfunction in the instrument, a fault message is
output.
This status message is always active. It cannot be deactivated by the
user.
4 … 20 mA signal
Status messages