Troubleshooting
Proline Promag 53 PROFIBUS DP/PA
152
Hauser
9.6.3
Removing and installing printed circuit boards
Field 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
purpose-built for electrostatically sensitive devices!
• If you cannot guarantee that the dielectric strength of the device is maintained in the following
steps, then an appropriate inspection must be carried out in accordance with the manufacturer’s
specifications.
• When connecting Ex-certified devices, see the notes and diagrams in the Ex-specific supplement
to this Operating Manual.
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Caution!
Use only original Hauser parts.
Installing and removing the circuit boards
1.
Unscrew cover of the electronics compartment from the transmitter housing.
2.
Remove the local display (1) as follows:
– Press in the latches (1.1) at the side and remove the display module.
– Disconnect the ribbon cable (1.2) of the display module from the amplifier board.
3.
Remove the screws and remove the cover (2) from the electronics compartment.
4.
Remove power unit board (4) and I/O board (6):
Insert a thin pin into the hole (3) provided for the purpose and pull the board clear of its holder.
5.
Removing sub-modules (6.2, only for measuring devices with convertible I/O board):
No tools are required for removing the submodules (inputs/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.
The individual slots are marked and correspond to certain terminals in the connection
compartment of the transmitter:
– “INPUT / OUTPUT 3” slot = terminals 22/23
– “INPUT / OUTPUT 4” slot = terminals 20/21
6.
Remove amplifier board (5):
– Disconnect the plug of the electrode signal cable (5.1) including S-DAT (5.3) from the board.
– Loosen the plug locking of the coil current cable (5.2) and gently disconnect the plug from
the board, i.e. without moving it back and forward.
– Insert a thin pin into the hole (3) provided for the purpose and pull the board clear of its
holder.
7.
Installation is the reverse of the removal procedure.