IACS - Monitoring Applications VG2 Infinity M540 and M500 Technical Documentation Rev 4.0

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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

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

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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).

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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).

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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 IACS - Monitoring Applications - VG2

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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.

Function descriptions

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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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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.

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

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1.4

Block diagram

Fig. 10

Interfaces

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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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