SMAR FI303, Operation, Maintenance & Instruction Manual

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Maintenance Procedures
4.3
Electronic Circuit
The main plate (5) and the outlet plate (7) are factory match pairs and must be replaced
together, as one should not be changed separately.
To remove the electronic plates (5 and 7) and the display (4), release the lid lock (8) on the
carcass side not bearing the words “Field Terminals” and unscrew the lid (1).
WARNING
The plates have CMOS components that may be damaged by electrostatic discharges. Follow
the right procedure for handling the CMOS components. The plate should be stored in an
electrostatic-proof case.
Loosen both screws (3) that anchors the display and the main circuit board. Gently pull out the
display, and then the main board (5). To remove the output board (7), first unscrew both screws
(6) that anchors it to the housing (9), and gently pull out the board.
Reassembly Procedure
Put output board (7) into housing (9).
Anchor output board with its screws (6).
Place the main plate (5) on the carcass and make sure the pins are connected.
Put display (4) into the housing, observing the four mounting positions. The "
▲ " symbol must
point upward.
Anchor the main board and display with their screws (3).
Fit the cover (1) and lock it using the locking screw (8).
Interchangeability
The calibration data on the Inlet plate are stored on the Principal plate EEPROM, reason why
they are said to be “match pairs”.
ADVERTÊNCIA
Se, por alguma razão, as placas de Entrada e Principal forem separadas é necessário fazer um Trim para
garantir a precisão das entradas. Com placas incompatíveis, o trim de fábrica não será tão bom quanto
aquele com as placas casadas.
Accessories
ACCESSORIES
ORDERING CODE DESCRIPTION
SD1 Magnetic Tool for Local Adjustment
FDI302 Field Device interface
PS302 Power Supply
BT302 Terminator
BC1 Fieldbus/RS232 Interface
DF47 Intrinsic Safety Barrier
DF48 Fieldbus Repeater