Perseus A500 series Technical Documentation Rev 3.0

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Technical Documentation IPM

Perseus A500 and Perseus A500 ceiling

Anaesthesia workstation

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

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Annex

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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.2805_0000005555-002

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

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General notes

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Abbreviations

This section contains a list of the abbreviations used in this document.

Abbreviations and definitions....................................................................................................

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Abbreviations

Abbreviations and definitions

10

Abbreviations and definitions

A

Ampere

AGFS

Anaesthetic gas scavenging system

AGS

Anaesthetic gas system

AIR

Medical compressed air

APL

Adjustable Pressure Limit

Aux. O2

O2 insufflation

Operator control unit

Display and operating unit

cmH2O

Centimetres head of water

CO2

Carbon dioxide

COM

Serial port

DVI

Digital Video Interface

EEPROM

Electrically Eraseable Programmable Read Only Memory

EMV

Electro Magnetic Compatibility

ESD

Electro Static Discharge

FG

Fresh gas

Flash-ROM

Flash Read Only Memory

FTP

File Transfer Protocol

Unit

Perseus A500 anaesthesia workstation system

hPa

Hectopascal

Hz

Hertz

I:E

Inspiratory-to-expiratory time ratio

ID

Identification

ILCA2

Infrared Gas Analyzer

kg

Kilogram

L

Litre

LAN

Local Area Network

LED

LED

MAC

Minimum Alveolar Concentration

MAN/ SPON

Manual ventilation/spontaneous breathing

mbar

Millibar

mmHg

Millimetres of mercury

MV

Minute volume

N 2O

Nitrous oxide, dinitrogen monoxide

Ncm

Tightening torque

Nm

Tightening torque

O2

Oxygen

O2+

O2 flush

Pa

Pascal, unit of pressure

PEEP

Positive end-expiratory pressure

Perseus A500

Name of anaesthesia workstation system

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Abbreviations

Abbreviations and definitions

Inspiratory pressure

PLD

Programmable Logic Device

PWM

Puls Width Modulation = Pulse Width Modulation

RAM

Random Access Memory

RFID

Radio Frequency Identification

SDRAM

Synchronous Dynamic RAM

SNMP

Simple Network Management Protocol

SPI

Serial Peripheral Interface

SRAM

Static RAM

SVF

Smart Vaporizer Function

TFT

Thin Film Transistor

UAR

Universal Asynchronous Receiver/Transmitter

USB

Universal Serial Bus

USV

Uninterruptible Power Supply

V

Volt

VT

Breath volume

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Pinsp

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Abbreviations

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Abbreviations and definitions

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Function descriptions

This chapter contains descriptions of the device's technical functions.

System overview ......................................................................................................................

Control panel (ECD) .................................................................................................................

Gas cylinder pressure regulators (option) ................................................................................

Mixer unit ..................................................................................................................................

Breathing system and interface ................................................................................................

Blower (M3.1) ...........................................................................................................................

Anaesthetic gas system (AGS).................................................................................................

Anaesthetic vaporizer (Vapor) ..................................................................................................

General points on the "Vapor View" .........................................................................................

Optional Vapor View (M605) ....................................................................................................

Fan ...........................................................................................................................................

Power supply unit(M7.3) ...........................................................................................................

Power failure backup battery ....................................................................................................

Main A500 PCB ........................................................................................................................

Therapy Control Unit PCB (M16.2)...........................................................................................

Blower A500 PCB .....................................................................................................................

M21 EAST PCB (M21, RFID unit) ............................................................................................

Ventilation Sensor PCB (M4.6).................................................................................................

PGM (M5x) ...............................................................................................................................

Auxiliary sockets without isolating transformer .........................................................................

Auxiliary sockets with 240 Volt isolating transformer (option)...................................................

Central brake ............................................................................................................................

Bronchial suction device...........................................................................................................

14

21

25

28

42

49

51

53

54

57

62

64

69

71

77

80

86

89

93

105

108

111

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2

3

4

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8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

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Function descriptions

System overview

1

System overview

1.1

Introduction

The following presents the Perseus A500 anaesthesia workstation. The

various sections of the function description detail the precise functioning of

the individual components.

The Perseus A500 anaesthesia workstation is referred to in the following as

"the device".

Design

13573

1.2

Fig. 1

Designation

Item

1

Control panel with work surface illumination.

8

Trolley

2

Mixer unit

9

Anaesthetic gas system (AGS).

3

Work surface

10

CO2 absorbers

4

Pull-out table top (optional).

11

Breathing system.

5

Central brake

12

APL valve

6

Castors, centrally braked.

13

External fresh gas outlet (optional).

14

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Item

Front view of device

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Function descriptions

System overview

Item

Foot rest

Item

14

Plug-in connection for vaporizers with optional

"Vapor View".

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Designation

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Function descriptions

System overview

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Component structure

13582

1.3

Fig. 2

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Component structure

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Function descriptions

System overview

Designation

Function

Control panel (ECD)

Controls

Rotary knob and buttons.

LCD module

TFT LCD (WXGA, 15.32 inch).

LEDs

Illuminate the work surface (table).

GUIμC PCB (M596)

Connects the graphics microcontroller and the peripheral functions.

Touch-panel

Touch-sensitive surface.

Column

Fan 2

Regulates the temperature and prevents impermissible O2 enrichment in the mixer unit.

Mixer unit

The mixer unit generates the desired fresh gas from N2O, AIR and O2.

Vapor View (M605)

(option)

The function unit illuminates the vaporizers, reads out vaporizer data (from suitable

vaporizer models) and transfers the data to the device.

VSWAK

A-cone valve for the external fresh gas outlet (optional).

Auxiliary sockets

Connections for external devices (electrically isolated from the mains by an isolating

transformer).

Table (work surface)

Breathing system

Controls the gas flow from the ventilator to the patient. Gas breathed back into the breathing system has CO2 removed from it by means of a soda lime absorber and is re-used.

Blower (M3.1)

Generates the preset airway pressure.

Blower capacitor

(68 mF)

Buffer capacitor for the blower in the ventilator.

Ethernet switches

Only suitable for connection of devices or networks which have only a safety low voltage

(SELV) even in case of fault.

Device rocker switch

Main switch.

Plug for non-heating

apparatus

Connection for power cable (100 to 240 V).

Loudspeaker

Acoustic interface for alarms and notifications.

Blower A500 PCB

Power electronics to actuate the blower, the breathing system heater and valves in the

ventilator.

Main A500 PCB

Connects the PCBs to the modules and other device components.

External Temp. Sensor Measures the ambient temperature.

PCB

Therapy Control Unit

PCB (M16.2)

Microprocessor module to control and monitor anaesthesia units.

Fan 1, 3

In the device, fan 1 and 2 of the oxygen reduction and fan 3 for temperature regulation.

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M21 EAST PCB (M21) Transponder detection by RFID technology.

Power supply

unit(M7.3)

DC power supply for the device and battery charge management.

PGM (M5x)

The patient gas module is a complete, suction-based gas analyzer system.

Interfaces

Serial ports (COM 1 and COM 2), USB port and connection for an optional lamp.

Trolley

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Function descriptions

System overview

Designation

Function

Batteries

Two 12 Volt lead/gel batteries (for uninterruptible power supply (UPS)).

NTC

Measures the battery temperature during charging by the power supply unit.

Isolating transformer

Isolates the auxiliary sockets electrically from the mains.

Components beneath the work surface

12548

1.4

Fig. 3

Item

Overview of components and connections beneath the work surface

Designation

Item

Designation

PGM (M5x) (Patient Gas Module).

8

Therapy Control Unit PCB (M16.2).

2

Blower capacitor (not visible under

PGM).

9

Main A500 PCB.

3

Ventilation Sensor PCB (M4.6).

10

Rocker switch.

4

Breathing system (beneath it is the

pneumatic interface).

11

Power supply unit (M7.3).

5

M21 EAST PCB (M21)(RFID).

12

External Temp. Sensor PCB (beneath loudspeaker).

6

Cover for Blower A500 PCB.

13

Loudspeaker.

7

Connector to control panel.

-

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Function descriptions

System overview

Connections

12683

1.5

Fig. 4

Overview of connections

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Item

Designation

Item

Designation

1

PGM (M5x).

14

Plug-in fuse.

2

Fan 1.

15

Fuse for power supply unit.

3

Optional "Vapor View" (M605)

16

Power supply unit (M7.3).

4

Mixer unit.

17

Feed from isolating transformer (option) or from inlet connector for non-heating apparatus.

5

"A-cones" option (VSWAK).

18

Loudspeaker.

6

Main A500 PCB.

19

External Temp. Sensor PCB (beneath loudspeaker).

7

Interfaces of the Main A500 PCB.

20

Operator control unit with workstation light.

8

Rocker switch.

21

M21 EAST PCB (RFID, M21).

9

Therapy Control Unit PCB (M16.2).

22

PEEP valve (M595).

10

Fan 3.

23

Ventilation Sensor PCB.

11

Batteries (2x).

24

Blower (M3.1) (with fan M3 in mount).

12

Temperature sensor (charge management).

25

Blower capacitor (68 mF).

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Function descriptions

System overview

Item

Holder for plug-in fuse.

Item

26

Designation

Blower A500 PCB.

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Designation

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Function descriptions

Control panel (ECD)

2

Control panel (ECD)

2.1

Introduction

The control panel is an ECD (Embedded Control Display). The following

details its design, function and connections.

2.2

Design

10775

The control panel is based on a TFT LCD (WXGA, 15.32 inch) with touchpanel. A dual-link DVI cable connects the device to the control panel. The

modified DVI cable also supplies the control panel with the necessary

operating voltage. The signals of the DVI cable have no standard

assignment.

Fig. 5

Item

Control panel front view

Designation

Item

Designation

"ON/OFF" button.

4

Rotary knob.

2

"Lighting" button.

5

"Audio" button

3

LCD with touch-panel.

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Function descriptions

10783

Control panel (ECD)

Fig. 6

Item

Control panel rear view (housing open)

Designation

Item

Designation

Rotary Knob PCB

5

GUIμC PCB (M596)

2

Rotary encoder

6

LCD module

3

Backlight Inverter PCB

7

4

Workplace Light PCB

Input (DVI connection for signals and operating voltage)

with connector.

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Function descriptions

Control panel (ECD)

Functional principle

10777

2.3

Fig. 7

Block diagram

Designation

Function

"GUIμC"

A GUI (Graphical User Interface) microcontroller controls and monitors the peripheral

functions (such as readout of the touch-panel, the rotary knob and the buttons). The

microcontroller controls the functions of the LCD, the LEDs and the communication

between the control panel and the medical device.

"Power supply"

Voltage regulators generate the operating voltages of the function modules present in the

device from the 24 Volt input voltage (24VSW4, +18 V to +30 V).

Backlight inverter

Backlighting of the LCD.

Rotary knob

Central operator control element.

"Backlight" rotary knob Behind the rotary knob there are blue and yellow LEDs (for colour key see instructions for

use).

Input

The signals of the medical device have no standard DVI assignment.

"Backlight" interface

Interface to the backlight inverter of the LCD.

"Buttons" interface

Interface to the buttons.

"RotKnob" interface

Interface to the rotary knob.

"Touch" interface

Interface to the touch-panel.

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"Workplace Light" inter- Interface to the reading light.

face

LCD

The screen is a demirrored 15.4” TFT LC color display with a resolution of 1280 x 800

pixels.

"Power On" LED

When the medical device is switched on, the LED in the "On/Off" button is lit.

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Function descriptions

Control panel (ECD)

Designation

Function

The workstation can be illuminated by three LEDs (see instructions for use).

GUIμC PCB (M596)

The PCB connects the graphics microcontroller (GUIμC) and the peripheral functions.

"Audio Paused" button

The button is connected to the GUIμC PCB by the "Buttons" interface.

"On/Off" button

The button is connected to the GUIμC PCB by the "Buttons" interface.

"Reading light" button

The button is connected to the GUIμC PCB by the "Buttons" interface.

Touch-panel

The touch-panel is a monitor with a touch-sensitive surface. The TFT LC colour display is

behind a touch-sensitive covering, comprising 2 screens positioned a defined space

apart. The screens are coated in a conductive material on the sides facing each other.

When any point on the touch-screen is touched, the resistance between the outer and

inner screens at that point changes. The change in resistance is used to determine x and

y coordinates. The accuracy is to within 2 mm. Communication between the touch-sensitive covering and the processor unit is controlled by an internal RS232 interface.

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Reading light

(LED module)

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Function descriptions

Gas cylinder pressure regulators (option)

3

Gas cylinder pressure regulators (option)

3.1

Introduction

The following details the design, function and connections of the pressure

regulators for AIR, O2 and N2O.

3.2

Design

13723

The pressure regulators are single-stage pressure regulators for medical

gases, and can be used for cylinder pressures up to 200 bar. The

downstream pressure is in the range of approx. 5.0 bar.

Fig. 8

Pressure regulator design (example)

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Technical Documentation IPM

Meaning

1

Country-specific connection for gas cylinders.

2

Supply pressure sensor.

3

Blow-off valve

4

Connector to device.

5

Service port

6

Downstream pressure tube

7

Gas inlet connection (on device).

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