Instruction Manual

7 Maintenance and fault rectification
7.1 Maintenance
When used as directed in normal operation, OPTISOUND
3010 C is completely maintenance-free.
7.2 Fault rectification
OPTISOUND 3010 C offers maximum reliability. Nevertheless
faults can occur during operation. These may be caused by the
following, e.g.:
l Sensor
l Process
l Power supply
l Signal processing.
The first measures to be taken are to check the output signal
and evaluate fault messages via the indicating/adjustment
module. The procedure is described below.
Connect a hand-held multimeter with a suitable measuring
range acc. to the wiring plan.
? 4 … 20 mA signal not stable
l level fluctuations
à set integration time via the indicating/adjustment
module
? 4 … 20 mA signal missing
l incorrect connection to power supply
à Check connection acc. to chapter "Connection proce-
dure" and correct, if necessary, acc. to chapter "Wiring
plans"
l no power supply
à check cables for line break, repair, if necessary
l supply voltage too low or load resistance too high
à check and adapt, if necessary
Causes of malfunction
Fault rectification
Checking the 4 … 20 mA sig-
nal
34 OPTISOUND 3010 C - 4 … 20 mA/HART
Maintenance and fault rectification
30503-EN-050914