KROHNE IFC 110 Converter - Manual (Page 82)

Sect. 8.3 Part C Special applications, functional checks, service, and order numbers
82 IFC 110 F 05/2003
8.3 Replacing the complete electronic unit of the IFC 110 F 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 the complete electronic unit out of the signal converter housing.
5) Carefully remove the data EEPROM IC 14 (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 the next page
and to the illustrations of the printed circuit boards in Section 8.7.
6) Re-assemble in reverse order (items 4 - 1 above).
ADC printed circuit board of A/D converter (ADC)
BDE motherboard
F front panel
F5 power supply fuse for 100 – 230 V AC,
see Sect. 8.1 and 9
F6 power supply fuse for 24 DC/AC,
see Sect. 8.1 and 9
FSV printed circuit board for field current supply
H 3 retaining clips at the back
of the front panel
IC 14 data EEPROM (8-pin)
I/O printed circuit board for outputs and inputs
MP printed circuit board for magnetic sensors
(optional), see Sect. 6.2 and 8.2
NT printed circuit board for power unit
OP connection plug for additional modules
PL
MP
5-pin plug connector for connection of the
printed circuit board MP for the magnetic
sensors
S 7 nuts for fastening the electronic unit
to front panel F
S
LP
screws for fastening the PCBs
S
MP
nut and special steel tooth lock washer
for fixing the MP PCB for the
magnetic sensors