MANUALE ISTRUZIONI / INSTRUCTIONS MANUAL
MTR605/025/DASM - R605/027/DASM - R605/170/DASM
Modello/Model R605DASM
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Supply and signals to the collimator must be to 93/42CEE standards. Devices that
supply to the collimator must therefore feature
double or reinforced insulation
as
provided by the General Standard on Electro medical Equipment CEI62-5 +A2 (EN
60601-1)
The device is electrostatic sensitive consequently all the relating safety
standards must be complied with.
All the system devices listed in the following tables (variable FFD table, variable FFD
stand, fixed lateral FFD, vertical Bucky, lateral Bucky, etc.) are to be connected to the
connectors of the external board.
Correct operation of the system is guaranteed if the return signals from the
Bucky ( if is foreseen) and FFD Potentiometres are not disturbed. Use tripolar
screened cables with the addition of ferrite cores near the connections to the PC
board (external unit)
The signal from the FFD variation control device must be analogic DC, 5VDC max
N.B.
All transducers, Potter Bucky (if is foreseen) and FFD Potentiometres, fixed
distance micro switches (if are foreseen), push buttons, etc. are analogic signals and
are supplied by the board. The 5VDC power that supplies the Potentiometres is also
used to supply the microprocessors that operate the collimator. The CAN signals are
at 5V and would be damaged if they were to be connected to other circuits. It is
therefore highly recommended to avoid reading electric signals shared with other
electronic equipment; i.e.
do not use analogic signals generated by a unit external
to the system
and make sure that the analogic signals are connected via screened
cables.
Analogic signals from the main system need to be used (Volt direct current),
these signals must never exceed 5V max. Any value in excess of this could
damage the board.
Use appropriate cables to connect supply to the external unit (24V AC 5A - minimum
supply transformer power 150 VA - external fuse 6A3) on contacts 83 and 84 (see the
layout of board ASR003) and earth on contact 85. The metal box, besides being a
mechanical protection, serves as electromagnetic shielding.
W
ARNING
:
PREVENT
METAL
RESIDUE
(
SMALL
CLIPPINGS
OF
CABLE
WIRE
)
FROM
DEPOSITING
ON
THE
CIRCUIT
TRACKS
-
THESE
COULD
DAMAGE
THE
BOARD
OR
CAUSE
MALFUNCTIONS
. P
RIOR
TO
SUPPLYING
THE
SYSTEM
,
USE
A
VACUUM
CLEANER
TO
CLEAN
THE
BOARD
AND
BOX
.
D
O
NOT
USE
COMPRESSED
AIR
.
IMPORTANT
:
THE
24VAC
TO
THE
BOARD
MUST
BE
SUPPLIED
BY
AN
EX
-
TERNAL
TRANSFORMER
WITH
DOUBLE
INSULATION
ON
THE
SECONDARY
WINDING
. S
ECONDARY
OUTPUTS
MUST
NOT
BE
EARTHED
.
