Olympus OFP-2, Инструкция по эксплуатации

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Chapter 11 Technical description
FLUSHING PUMP OFP-2
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Chapter 11 Technical description
The OFP-2 incorporates a brushless d.c. motor to drive the peristaltic pump head, producing high
output torque with quiet operation. The control software monitors position sensors built into the
motor to generate the commutating signals, forming a closed-loop feedback circuit which ensures
excellent speed control over a wide range of motor loadings. These signals are boosted by the
drive electronics to operate an 'H-bridge' mosfet output stage, with an overcurrent monitor to detect
an overload on the motor, due, for example, to a damaged or poorly-fitted irrigation tube.
The control software also manages the display driving functions and the remote control interface
on the rear panel which enables the unit to be operated via the buttons on a compatible
endoscope.
The pump head incorporates a cutout switch to stop the motor if the cover is inadvertently raised
without first selecting standby. This produces an interrupt to the software program and
independently disables the drive electronics.
The electronics are powered by a 'universal input' medical-grade 24Vdc power supply. The mains
input is connected through a double fused IEC appliance inlet containing an in-line EMC filter
which also enables the unit to be isolated from the mains supply for cleaning, maintenance, etc.
Power is controlled through a double pole push switch on the front panel.
A Maintenance and Repair Manual is available from Olympus containing circuit diagrams, parts
lists, descriptions, replacement procedures and other information to assist qualified service
personnel in repairing this equipment.
11.1 EMC (electromagnetic compatibility)
OFP-2 is EMC-tested in conformity with the requirements of IEC 60601-1-2:2014 Edition 4 and can
be used in the vicinity of other EMC-tested devices that fulfil the requirements of the relevant IEC
IEC 60601-1-2:2014 Edition 4 standard. OFP-2 is a medical device that requires special safety
precautions and must be installed and placed in operation in accordance with the following EMC
information on portable and mobile RF communication devices.
11.2 Essential performance with regards to EMC
Olympus has determined that OPF-2 does not have any functions, which if they failed to work
properly, would impact the safety of the system. All necessary instruction for maintaining essential
performance with regard to electromagnetic disturbances for the expected service life of the unit is
listed in this chapter.
11.3 EMC environment
The OPF-2 is suitable for the professional health care facility environment as defined in IEC
60601-1-2:2014 Edition 4. In addition to this, the OPF-2 can operate near Olympus endoscopic HF
surgical equipment outside a RF shielded room. Therefore, for this purpose only, the OPF-2 is
suitable for the special environment as defined IEC 60601-1-2:2014 Edition 4. For maintaining
basic safety and essential performance with regard to electromagnetic disturbances use only