Endress+Hauser Proline Promass 84 MODBUS RS485 Operating Instructions Manual page 89

Proline Promass 84 MODBUS RS485
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Endress+Hauser
Wall-mount housing
Warning!
• Risk of electric shock. Exposed components carry dangerous voltages.
Make sure that the power supply is switched off 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 working surface purposely built for electrostatically sensitive devices!
• If you cannot guarantee that the dielectric strength of the measuring instrument is maintained in
the following steps, then an appropriate inspection must be carried out in accordance with the
manufacturer's specifications.
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Caution!
Use only original Endress+Hauser parts.
Installing and removing printed circuit boards → å 48:
1. Remove the screws and open the hinged cover (1) of the housing.
2. Remove the screws securing the electronics module (2). Then push up electronics module and
pull it as far as possible out of the wall-mount housing.
3. Disconnect the following cable plugs from amplifier board (7):
– Sensor signal cable plug (7.1) including S-DAT (7.3)
– Connector of exciting current cable (7.2):
Gently disconnect the plug, i.e. without moving it back and forward.
– Ribbon cable plug (3) of the display module.
4. Remove the cover (4) from the electronics compartment by loosening the screws.
5. Remove the boards (6, 7, 8):
Insert a thin pin into the hole (5) provided for the purpose and pull the board clear of its holder.
6. Remove submodules (8.1) (optional):
No tools are required for removing the submodules (outputs) from the I/O board. Installation
is also a no-tools operation.
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Caution!
Only certain combinations of submodules on the I/O board are permissible → ä 27.
The individual slots are marked and correspond to certain terminals in the connection
compartment of the transmitter:
Slot "INPUT / OUTPUT 3" = Terminals 22/23
Slot "INPUT/OUTPUT 4" = Terminals 20/21
7. Installation is the reverse of the removal procedure.
Troubleshooting
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