iacs_-_monitoring_applications_vg2_infinity_m540_an.pdf
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Technical Documentation IPM
IACS - Monitoring Applications - VG2
Infinity M540 / M500
Warning
All servicing and/or test procedures on the
device require detailed knowledge of this
documentation. Use of the device requires
detailed knowledge and observance of the
relevant Instructions for Use.
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Table of contents
Table of contents
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General
1 General notes ...........................................................................................................................
Function descriptions
1 MCable-Mainstream CO2 sensor M11.1 ..................................................................................
2 PS250 function .........................................................................................................................
Function descriptions P2500
1 Infinity P2500 Function Description ..........................................................................................
2 Power supply unit .....................................................................................................................
3 "Ethernet board" .......................................................................................................................
4 "System board" .........................................................................................................................
Function descriptions C500 (MS18746)
1 Infinity C500..............................................................................................................................
Function descriptions C500 (MK31500, MK31501)
1 Infinity C500 (M14.5) function description ................................................................................
Function descriptions C700 (MS18747)
1 Infinity C700..............................................................................................................................
Function descriptions C700 (MK31700, MK31701)
1 Infinity C700 (M14.7) Function Description ..............................................................................
Annex
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Table of contents
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General
This chapter contains general notes and definitions that are important for the
use of this documentation.
General notes ...........................................................................................................................
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General
General notes
1
General notes
1.1
Notes on use
Read through the following notes thoroughly before applying this
documentation.
Dräger reserves the right to make changes to the device and/or to this
documentation without prior notice. This documentation is intended solely as
an information resource for maintenance personnel or technical specialists.
1.2
Copyright and other protected rights
The content of this documentation, in particular its design, text, software,
technical drawings, configurations, graphics, images, data and their selection
and its composition and any amendments to it (content) are protected by
copyright. The content must not (in whole or in part) be modified, copied,
distributed, reproduced, republished, displayed, transmitted or sold without
the prior written consent of Dräger.
1.3
Definitions
WARNING
An important advisory indicating a potentially hazardous situation
which may result in death or serious injury if not prevented.
CAUTION
An important advisory indicating a potentially hazardous situation which may
result in minor or moderate injury to the user or patient or in damage to the
medical product or other assets if not prevented.
NOTE
A NOTE provides additional information intended to avoid inconvenience
during operation and/or servicing.
Term
Maintenance
Maintaining the operative condition of a medical product
by suitable means
Inspection
Assessment of the actual condition of a medical product
Servicing
Maintaining the operative condition of a medical product
by recurrent, specified measures
Repair
Restoring the operative condition of a medical product
after failure of a device function
General safety precautions
Read through each section thoroughly before beginning servicing. Always
use the correct tools and the specified test equipment. Otherwise the device
may not work correctly or may be damaged.
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1.4
Definition
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General
General notes
WARNING
The device must be regularly inspected and serviced by maintenance
personnel. Repairs and complex maintenance work on the medical
product must be carried out by qualified specialists.
If you require a service contract, or for any necessary repair work,
Dräger recommends DrägerService. Dräger recommends using
original Dräger parts for servicing.
If the aforementioned instructions and recommendations are ignored,
the correct functioning of the medical product may be put at risk. Pay
attention to the "Servicing" section of the Instructions for Use.
WARNING
Non-conforming test values
If test values do not conform to specifications, the safety of the patient
may be put at risk.
–
Do not put the device into operation if test values do not conform to
specifications.
–
Contact your local service organization.
WARNING
Impermissible modifications to the device
If impermissible modifications are made to the device, the safety of the
patient may be put at risk.
Do not modify the device without Dräger's permission.
WARNING
Risk of infection
The unit may transmit pathogens following use on the patient.
–
Before carrying out any servicing, ensure that the device and its
components have been handed over by the user cleaned and
disinfected.
–
Service only cleaned and disinfected units and unit components.
WARNING
Risk to patient.
Ensure that no patient is connected to the device before starting
maintenance or repair work.
NOTE
No.0808_0000006220-001
Where reference is made to legislation, regulations and standards, in
respect of devices used and serviced in Germany they are based on the
laws of Germany. Users and technicians in other countries must comply with
their national laws and/or international standards.
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General
General notes
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Function descriptions
This chapter contains descriptions of the device's technical functions.
MCable-Mainstream CO2 sensor M11.1 ..................................................................................
PS250 function .........................................................................................................................
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Function descriptions
MCable-Mainstream CO2 sensor M11.1
1
MCable-Mainstream CO2 sensor M11.1
1.1
Introduction
The MCable-Mainstream CO2 sensor M11.1 measures the CO2 content in
the respiratory gas. The following section describes the design and function
of the MCable-Mainstream CO2 sensor.
Design
667
1.2
Fig. 1
MCable-Mainstream CO2 sensor
Item
1.3
Designation
1
Connector
2
Test filter
3
CO2 sensor
Principle
The CO2 measurement is based on the principle that CO2 molecules absorb
light at a specific wavelength. Light at a wavelength of around 4.26 µm is
strongly absorbed by the CO2 molecule. Light at a wavelength of around
4.13 µm is virtually not absorbed.
Function
Beam path
10
The beams emitted from the light source (9) are reflected by a parabolic
reflector (8), travel through the cuvette (7), and reach a filter/reflector (5). The
filter/reflector allows light at a wavelength of 4.13 µm to pass through, but
reflects the other wavelengths. The light at a wavelength of 4.13 µm is
bundled by a parabolic reflector (3) and sent to a detector (2).
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Function descriptions
MCable-Mainstream CO2 sensor M11.1
The light reflected by the filter/reflector travels to a filter (10) which allows the
light at a wavelength of 4.26 µm to pass through. This light is bundled by a
parabolic reflector (11) and sent to a detector (12). The values measured by
the detectors are evaluated and used to calculate the CO2 value. The
electronics required to do so is located on two printed circuit boards (1 and
13).
668
The optical assembly, including filters and detectors, is mounted on a metal
block which is kept at a constant temperature of approx. 42 °C. The discs that
face the cuvette have small heaters (6) which prevent the discs from misting
up.
Fig. 2
Electronic assembly
Mode of operation of the CO2 sensor
A preamplifier and filter assembly amplifies the values measured by the
detectors. The A/D converter converts these measured values into digital
signals. The microcontroller then calculates the CO2 measured values, and
makes them available at the RS232 port.
The A/D converters also converts the measured values from the temperature
sensors as well as the supply voltages into digital signals. With the help of the
control circuit, the microcontroller uses these signals to control the heaters
and to monitor the system.
The calibration data of the detectors are stored in the EEPROM.
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The value of the test filter is stored in the CO2 sensor. Depending on the
cuvette used (disposable or reusable), a correction value is applied to the
CO2 measurement.
The supply voltage to the electronics is +5 V. The various internal voltages
required for operation are generated on the Mainboard PCB.
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Function descriptions
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MCable-Mainstream CO2 sensor M11.1
Fig. 3
Block diagram
Each CO2 sensor is fitted with a test filter. The value of the test filter is stored
in the CO2 sensor.
General information
As from Revision 05 Defibrillator the CO2 sensor is fixed. This is indicated on
the sensor.
1.5
Connections and interfaces
The CO2 sensor is attached by a connector to the medical product. This
connector carries the voltage supply and the communication (RS232).
898
Pin assignment
Connector (1 = rear view, solder terminals, 2 = front view, pins)
Pin
12
Assignment
1
TXD
2
Unassigned
3
Unassigned
4
+5 V
5
GND
6
RXD
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Fig. 4
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Function descriptions
MCable-Mainstream CO2 sensor M11.1
Pin
Cable shield
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Assignment
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Function descriptions
PS250 function
2
PS250 function
2.1
Introduction
The following text describes the structure, the functional principle, and the
connections of the PS250.
Design
2689
2.2
Fig. 5
Overview
Item
2.3
Designation
1
Power supply unit M7.3
2
Battery
3
IO Board PCB
4
Power Board PCB
Functional principle
The PS250 is a network distribution device with additional voltage supply.
The power supply unit provides a supply voltage of 24 V. In the event of a
mains power supply interruption, a battery bridges the outage time. The
bridging time is, amongst other things, dependent on the charge state of the
battery and the power consumption.
The IO Board has additional interfaces/ports, 2x Ethernet and 1x RS232. The
"Nurse call" connection can be used to connect to an external center for
nurse calls.
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The Power Board PCB provides two connections for the system cables.
These connections are used to communicate with and power other units,
such as Infinity C500 and Infinity M540.
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Function descriptions
2690
PS250 function
Block diagram
Fig. 7
Interfaces
Connections and ports
2691
2.4
Fig. 6
Key to Fig. 7
Item
Designation
Ethernet interface (Infinity LAN)
2
Ethernet interface (Infinity LAN)
3
Nurse call
4
RS232 interface
5
Mains voltage
6
System cable, connection to other units
7
System cable, connection to other units
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Function descriptions
PS250 function
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Function descriptions P2500
Infinity P2500 Function Description ..........................................................................................
Power supply unit .....................................................................................................................
"Ethernet board" .......................................................................................................................
"System board" .........................................................................................................................
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3
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Function descriptions P2500
Infinity P2500 Function Description
1
Infinity P2500 Function Description
1.1
Introduction
The following text describes the design, the functional principle, and the
connections of the Infinity P2500 communications distributor.
1.2
Design
1032
Infinity P2500 is a communications distributor with an additional power
supply.
Fig. 8
Overview
Item
1.3
Designation
1
Housing with heat sink, battery mount and power fuse
2
2 batteries (lead-acid accumulator)
3
Power supply unit
4
"Ethernet board"
5
"System board"
6
Housing
Functional principle
The "System board" provides two connections for the system cables. These
connections are used to communicate with and power other units, such as
Infinity C500 and Infinity M540.
The two LEDs visible on the outside of the housing cover are also controlled
by the "System board". The "Power" LED lights up green as soon as mains
voltage is connected to the unit. The "Battery check" LED flashes
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The power supply unit supplies an output voltage of 28 V DC when
connected to the mains and 24 V DC in battery operation.
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Function descriptions P2500
Infinity P2500 Function Description
immediately after power-on and then goes out. If the battery voltage is less
than 19 V, or if errors occur when charging the battery, the "Battery check"
LED lights up orange.
1598
The "Ethernet board" provides additional interfaces. The "Nurse call"
connection can be used to connect to an external centre for nurse calls. The
RS232 interface can be used for data export. By way of the electrically
isolated Ethernet ports, connections can be made to the Infinity network.
Fig. 9
Connections and interfaces
1037
1.4
Block diagram
Fig. 10
Interfaces
No.0808_0000006220-001
Item
Technical Documentation IPM
Designation
1
System cable connection
2
System cable connection
3
Mains voltage connection
4
Ethernet port (Infinity network)
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Function descriptions P2500
Infinity P2500 Function Description
Item
Designation
Ethernet port (Infinity network)
6
Nurse call port
7
RS232 port for export with Medibus protocol
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Function descriptions P2500
Power supply unit
2
Power supply unit
2.1
Introduction
The following text describes the design, the functional principle, and the
connections of the power supply unit.
2.2
Design
1039
The power supply unit is a compact unit which must not be dismantled further.
The AC voltage input is protected by two encapsulated fuses. The DC voltage
output is available by way of two screw-type terminals.
Fig. 11
2.3
Overview
Functional principle
The power supply unit uses an AC/DC converter to convert the present AC
voltage into a DC voltage.
The AC voltage input range is 100 to 240 V at a frequency ranging from 47 to
63 Hz.
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The generated DC voltage when powered from the mains is a nominal 28 V,
and when battery powered a nominal 24 V. The power output for both system
connectors together is 250 W.
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Function descriptions P2500
Power supply unit
Connections and interfaces
1040
2.4
Fig. 12
Connections
Item
Designation
Mains power supply (100 - 240 V AC)
2
24 V DC voltage output
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Function descriptions P2500
"Ethernet board"
3
"Ethernet board"
3.1
Introduction
The following text describes the design, the functional principle, and the
connections of the "Ethernet board".
3.2
Design
1048
The "Ethernet board" is a printed circuit board with SMD components and
several plug-in connectors.
Fig. 13
3.3
"Ethernet board"
Functional principle
An Ethernet switch enables the devices to communicate over the Infinity
network. The Ethernet ports are electrically isolated.
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1050
An RS232 interface and the nurse call are looped through from the "System
board" to the connector ports.
Fig. 14
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Block diagram, "Ethernet board"
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Function descriptions P2500
"Ethernet board"
Connections and interfaces
1049
3.4
Fig. 15
Connections
Item
Designation
Ethernet port (Infinity network)
2
Earth connection to "System board"
3
Connections of the "System board"
4
Battery LED and mains power LED
5
Earth spring contact to housing
6
RS232 port for export with Medibus protocol
7
Nurse call port
8
Ethernet port (Infinity network)
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Function descriptions P2500
"System board"
4
"System board"
4.1
Introduction
The following text describes the design, the functional principle, and the
connections of the "System board".
4.2
Design
1043
The "System board" is a printed circuit board with 2 microcontrollers, 1
ambient temperature sensor, SMD components and several plug-in
connectors.
Fig. 16
4.3
Overview
Functional principle
The "System board" powers the devices on the Infinity workstation and
enables them to communicate.
The "System board" controls the two connected batteries (Fig. 17). Following
a full charge, the batteries are maintained at optimum charge with a trickle
charge. In the event of failure of the operating voltage, the batteries are
automatically activated as power sources. A connected sensor continuously
monitors the battery temperature.
Infinity devices are connected via the system connectors, and are able to
communicate bidirectionally.
The Ethernet port is electrically isolated and routed to a network "Switch" on
the "Ethernet board".
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The "Node-Controller" processes signals, e.g. the nurse call signal or status
signals from the voltage controller.
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