KROHNE TIDALFLUX IFM 4110 PF EN - Manual (Page 63)

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8.3 Replacing the complete electronic unit of the IFC 110 PF signal converter
Switch off the power supply before opening the housing.
1) Remove the cover from the terminal compartment (remove 2 screws).
2) Pull all cables out of the plug-in terminals.
3) Remove the glass cover from the control compartment (remove 4 screws).
4) Remove 4 screws from the front panel F, take hold of the handle on the upper end of the front panel and carefully pull out
the complete electronic unit of the signal converter housing.
5) Carefully remove the data EEPROM IC14 (on ADC printed circuit board) from the old electronic unit and move it to
the new electronic unit. Observe the direction of the IC when plugging the data EEPROM. After changing the EEPROM
from the old to the new electronic unit, no further adjustments or settings are required. Refer to the drawing on this page
and to the illustrations of the printed circuit boards in sect. 8.5.
6) Re-assemble in reverse order (items 4 – 1 above).
ADC printed circuit board of A/D converter (ADC) NT printed circuit board for power unit
BDE motherboard OP connection plug for additional modules
F front panel PL
MP
5-pin plug connector for connection of the printed
F1 power supply fuse, see Sect. 8.1 and 9. circuit board MP for the magnetic sensors
FSV printed circuit board for field current supply S 7 nuts for fastening the electronic unit to front panel
H 3 retaining clips at the back of the front panel S
LP
screws for fastening the PCB’s
IC14 data EEPROM (8-pin) S
MP
nut and special steel tooth lock washer for fixing the
I/O printed circuit board for outputs and inputs MP PCB for the magnetic sensors
MP printed circuit board for magnetic sensors
(optional), see sect. 6.2 and 8.2