Hach-Lange EVITA OXY User Manual - Manual (Page 47)

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Symptom Current output Event code Cause Remedy
Flashing bell in display Undefi ned WU39 HART communication error Check cables
WU40 TMS communication error Replace TMS
WU41 A parameter is out of range.
It could not be replaced by its default value Fixed at power-up
WU43 Too many errors at the same time.
Some errors are not registered correctly Power-up USC
WU49 Internal error Power-up USC
One or more
current outputs
= 3.8 mA or 24 mA EU60 CAN bus application does not respond.
This error is shown when the maximum number of
communication attempts is exceeded. 1. Power-up USC
2. Replace USC
Undefi ned EU61 USC unable to read data required for I OUT 1
1. No reply from transmitter
2. Transmitter has got new address
3. Another master confl icts on HART
® comm.
4. Supply voltage for transmitter too low
5. Too much noise on current loop
6. Transmitter defective
7. USC defective
1. Check shielding and cable connections
2. Power-up USC
3. Disconnect the other master or set USC to
another master, see fi g. 51, p. 52
4. Check supply voltage at transmitter,
supply voltage must be at least 20 V
5. Check shielding and cable connections
6. Replace transmitter
7. Replace USC
EU62 USC unable to read data required for I OUT 2
1 - 7: Same as EU61 Same as EU61
EU63 USC unable to read data required for I OUT 3
1 - 7: Same as EU61 Same as EU61
EU64 USC unable to read data required for I OUT 4
1 - 7: Same as EU61 Same as EU61