Endress+Hauser Proline t-mass 65 PROFIBUS DA, Руководство по эксплуатации

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Proline t-mass 65 PROFIBUS DP/PA Trouble-shooting
Hauser 103
10.5.1 Removing and installing printed circuit boards
Field housing
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Warning!
• Risk of electric shock. Exposed components carry dangerous voltages. Switch off the power
supply before you remove the cover of the electronics compartment.
• Risk of damaging electronic components (ESD protection). Static electricity can damage
electronic components or impair their operability. Use a workplace with a grounded work-
ing surface purposely built for electrostatically sensitive devices!
• If you cannot guarantee that the dielectric strength of the measuring device can be main-
tained during the following steps, then an appropriate inspection test must be carried out
in accordance with the manufacturer’s specifications.
• When connecting Ex-certified measuring devices, see the notes and
diagrams in the Ex-specific supplement to these Operating Instructions. Please do not hes-
itate to contact your Hauser sales center if you have any questions.
"
Caution!
Use only original Hauser parts.
Removal and installation
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48:
1. Unscrew cover of the electronics compartment from the transmitter housing.
2. Remove the screws (1.1) and remove the cover (1) from the electronics compartment.
3. Disconnect the display ribbon cable (1.2) from the amplifier board.
4. Remove power supply board (3) and I/O board (5):
Insert a thin pin into the hole (2) provided for the purpose and pull the board clear of
its holder.
5. Remove amplifier board (4):
– Disconnect the plug of the sensor signal cable (4.1) including HistoROM/S-DAT (4.2)
and HistoROM/T-DAT (4.3) from the board.
– Disconnect the plug of the excitation current cable (4.2) from the board carefully, i.e.
without moving it to and fro.
– Insert a thin pin into the hole (2) provided for the purpose and pull the board clear of
its holder.
6. Installation is the reverse of the removal procedure.