LINET Wissner-Bosserhoff ELEGANZA 4 User manual

-
D9S001GE4-0101
Version 03
Publication Date 2019-09
Service Manual
ELEGANZA 4
Positionable Bed for Intensive Care
version with scales and without scales

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Table of Contents
1Introduction –General information................................................................................4
Product label and technical label –location........................................................................................4
1.1.1 Product and technical label description.........................................................................................4
Identification of bed sides ...................................................................................................................5
2Technical data and Symbols...........................................................................................6
3Theory of Operations ......................................................................................................7
Control unit..........................................................................................................................................7
3.1.1 Power box......................................................................................................................................7
3.1.2 Technical parameters....................................................................................................................8
3.1.3 Control unit ....................................................................................................................................8
3.1.4 Technical parameters....................................................................................................................8
3.1.5 Control unit modes and safety functions .......................................................................................8
3.1.6 Saved values...............................................................................................................................10
Rechargeable battery........................................................................................................................11
3.2.1 Charging of rechargeable battery................................................................................................11
Head side rails ..................................................................................................................................12
3.3.1 iBoard Basic.................................................................................................................................12
3.3.2 Backrest accelerometer in iBoard Basic control panels..............................................................12
3.3.3 Integrated Attendant control panel ..............................................................................................13
Foot siderails.....................................................................................................................................13
3.4.1 Controllers in foot side rails .........................................................................................................13
Supervisor control panel (ACP) ........................................................................................................15
Handset.............................................................................................................................................15
Mobi-Lift®..........................................................................................................................................15
3.7.1 Left and right side rail limit switches (EMR ready Only)..............................................................16
Weighing module ..............................................................................................................................16
Weighing sensor (tensometer)..........................................................................................................17
Integration module.......................................................................................................................19
3.10.1 Indication of device mode............................................................................................................19
EMR ready solution .....................................................................................................................20
Mattress platform actuators.........................................................................................................20
3.12.1 Backrest actuator.........................................................................................................................21
3.12.2 Thighrest actuator........................................................................................................................21
Lift drives - Columns....................................................................................................................22
Undercarriage module (UM)........................................................................................................23
Undercarriage module –Basic....................................................................................................24
Foot controller (height setting).....................................................................................................24
I-Brake .........................................................................................................................................25
Night illumination .........................................................................................................................26
Safe Stop (Anticrush)...................................................................................................................26
i-Drive - Driven 5th castor............................................................................................................27
3.20.1 Technical specifications...............................................................................................................27
3.20.2 Electrical specifications ...............................................................................................................27
3.20.3 I-Drive control panels...................................................................................................................28
3.20.4 Emergency button to retract the i-Drive.......................................................................................29
3.20.5 i-Drive control unit........................................................................................................................29
3.20.6 i-Drive power box.........................................................................................................................29
3.20.7 Correction of voltage on i-Drive...................................................................................................30
3.20.8 i-Drive rechargeable battery ........................................................................................................30
Mechanical 5th castor..................................................................................................................33

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Castors ........................................................................................................................................34
Bed Wiring Diagram.....................................................................................................................35
4Bed Diagnostic ..............................................................................................................36
Errors –Failure States......................................................................................................................36
4.1.1 Pop ups........................................................................................................................................36
4.1.2 LED Blinking statuses..................................................................................................................37
4.1.3 Beeping - Sound signals..............................................................................................................37
i-Drive signalisation...........................................................................................................................38
4.2.1 Audio signalling............................................................................................................................38
4.2.2 Light indicators.............................................................................................................................38
4.2.3 Fault signalisation (i-Drive Power)...............................................................................................38
LINIS 39
4.3.1 Description of Linis items displayed on iBoard segment display.................................................39
4.3.2 Stop codes...................................................................................................................................40
4.3.3 Operation codes ..........................................................................................................................41
5Bed Setup.......................................................................................................................42
Column and accelerometer calibration .............................................................................................42
5.1.1 Column and accelerometer calibration using the ACP................................................................42
Transport lock ...................................................................................................................................42
Scale Calibration –iBoard Basic version...........................................................................................43
5.3.1 Introduction..................................................................................................................................43
5.3.2 Diagnostic mode..........................................................................................................................43
5.3.3 Scale calibration ..........................................................................................................................44
5.3.4 Calibration mode..........................................................................................................................44
5.3.5 Calibration constant setting .........................................................................................................46
5.3.6 Reconfiguring the sensor constants ............................................................................................47
Multizone Bed Exit Alarm Calibration................................................................................................55
5.4.1 Phase One...................................................................................................................................55
5.4.2 Phase Two...................................................................................................................................55
6Service Tools.................................................................................................................56
List of tools and equipment needed for servicing the bed ................................................................56
No

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1 Introduction –General information
Product label and technical label –location
1.1.1 Product and technical label description
1……… Address of Distributor
2……… Manufacturing Date (Year-Month-Day)
3……… DI (Device Identifier) / GTIN (Global Trade Item Number)
4……… 1D Bar code GS1-128 (Serial Number)
5……… Symbols
6……… Configuration number
7……… Electrical Specification
8……… Serial Number
9……… PI (Product Identifier)
10………2D Bar Code (GS1 DataMatrix) DI+PI=UDI

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Identification of bed sides

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2 Technical data and Symbols
Follow User Manual for Eleganza 4 (D9U001GE4-0101) to find Technical Data and used Symbols.

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3 Theory of Operations
The aim of the chapter is to explain the functional principles of sets and individual components of the given LINET
product model, and their mutual relations.
Control unit
The power box and control unit are placed together to the one plastic box.
In case of iDrive option is control box separated from power box. The Power box is on undercarriage and control box
on a mattress platform.
3.1.1 Power box
The power box transforms input voltage to 24V and sends it to the control unit. Mains power is supplied to the
power box via a three-core mains cable (in the relevant national standard). The power unit is standard at voltage 230V
–50/60 Hz, and alternatively at voltage 100, 110, 127V –50/60Hz. A filter is in the mains connector of the power box.
The power box transformer contains two current fuses. The first fuse automatically disconnects voltage at a
temperature of 100°C/212°F and reconnects the voltage after cooldown. The second fuse disconnects the voltage
permanently at a temperature of 130°C / 266°F. The 24 V AC power box has two 1,6A fuses for the 230V version (2x
3,15 A for low voltage –100, 110, 127 V). Power box is part of control box.

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3.1.2 Technical parameters
3.1.3 Control unit
The PB43 red unit is used for controlling 4 linear units, with outputs for controllers and a backup rechargeable battery
power source. It is controlled via low-voltage switches and allows the use of membrane keypads. The control unit has
4 outputs for the linear units, an input for connecting a rechargeable battery, and an input for control panels with safety
functions (ACP). The PB43 red unit also contains inputs for weight transducers, an undercarriage module, limit
switches, and an add-on matrix controller. The PB43 red unit is built into the instrument case and is equipped for dual
power from the mains and from batteries. During mains operation, the rechargeable battery is continuously powered
and charged, and while the rechargeable battery is in operation, the electronics are disconnected after approximately
3 minutes without command. The control unit has a function to synchronise speed of the lift units (see
Synchronisation (calibration) of speed of lift units) of the mattress platform, and to lock the units (See If resistance is
detected in any of the controllers, it is signalled by all the lock LEDs flashing, the control unit always permitting one
movement of the bed after the STOP button is pressed. Information about the leak is recorded simultaneously in the
permanent memory of the control unit.
Positioning function locks and safety circuit to detect overload (See Detecting overload).
3.1.4 Technical parameters
Parameters
Values
Dimensions:
310 x 125 x 90
Cover:
IP54
Number of outputs for motor units:
4
Output current for motors:
5 A
Current load of any motor output during positioning:
less than or equal to 5 A
Maximum voltage at outputs for motors idling:
42 V DC
Maximum performance:
internally limited
Maximum tolerance of configuration
of current limitation:
±20%
Number of control buttons (functional inputs)
30 - basic matrix 6 x 5
3.1.5 Control unit modes and safety functions
The architecture of the control unit is designed to exclude or significantly limit the risks arising from using a
programmable electronic system.
The default general requirement is the safety of the system when there is one fault. The basic safety features are:
3.1.5.1 Synchronisation (calibration) of speed of lift units
The function to stabilise speed of lift units allows the speed of lift of all columns to be synchronized. This makes it
possible to maintain the bed in a horizontal position. Synchronisation must be performed after each change of
column, control unit, and accelerometer.
Parameters
Values
Nominal supply voltage:
AC 230, 100, 110, 127V (±10%) / 50-60 Hz
Fuse protection:
2 x tube fuse 5 x 20mm
T1,6A for 230V; T3,15A for 100-127V
Maximum performance:
internally limited
Maximum tolerance of configuration
of current limitation:
±20%

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3.1.5.2 STOP button located on the ACP panel
The main STOP button immediately stops all movements of the bed (undesirable movement) and deactivates GO if
positioning is not permitted or during failure of electrical components. A 10 kΩresistor is connected in parallel to the
STOP button inside the keypad. The electronics of the system detect the correct connection of the resistor (connection
of keypad and functionality of the STOP button). Its interruption (error in keypad, faulty resistor, cable...) is signalled
by an intermittent tone from the control unit. Without correct connection of ACP controller to the resistors, this function
after activation with the GO button is only active for 5s.
3.1.5.3 GO button located on the ACP panels, the handset, and side rails
All the control functions are conditional on the GO button being pressed (only the CPR and STOP button do not
require the GO button to be pressed). When GO is pressed, the control system is activated for 3 minutes (except
during fault of the STOP circuit –described above). When any function is pressed for more than 2 seconds, the button
is released for an extension ofthe GO period by another 3 minutes. When a function is pressed for less than 2 seconds,
the original 3 minutes remains. After 3 minutes from the previously selected function, the control electronics are
deactivated and any further function is conditional on the GO button being pressed again. Pressing the GO button is
only valid if no other control button has been pressed at the same time. The use of the GO button significantly limits
the possibility of accidental movement of the bed during a fault or from unintentional pressing of controllers.
3.1.5.4 Simultaneous pressing of any two buttons
The control unit is issued with the function for recognizing two pressed buttons at the same time. When two buttons
are pressed atthe same time, control unitblocks function. Unblocking is automatic after all presses have been released
(including the error ones).
3.1.5.5 RC circuits –protection against shorting and spontaneous movement
An RC circuit is installed in all the analogue control elements connected to the ACP control unit (ACP, handset,
mobilift, foot controller). The value of the RC circuit resistor is 390 Ω. If the function is not active, the circuit resistance
is infinite as standard. When any function is pressed, the resistance of the circuit is 390 Ω, the function is detected as
valid and it begins. If a short is present in the circuit of the button, the resistance drops below 200 Ω, the control unit
detects the function as invalid and positioning does not occur. The RC circuit serves to prevent spontaneous
movements of the bed caused by a short in the wiring.
3.1.5.6 Measuring leaks
The control unit is capable of measuring leaks in the individual controllers in a range of kΩ.
If resistance is detected in any of the controllers, it is signalled by all the lock LEDs flashing, the control unit always
permitting one movement of the bed after the STOP button is pressed. Information about the leak is recorded
simultaneously in the permanent memory of the control unit.
3.1.5.7 Positioning function locks
The positioning function locks have an electronic design and their current condition is always saved in an EEPROM
type memory. If they possess a fault, this condition is signalled by the relevant lock flashing its LED.
0 < 200 Ω- Short
≥1 kΩ - Leakage
390 Ω- OK

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3.1.5.8 Detecting overload
While monitoring current drawn by the motor units, the electronics stabilise the maximum current and thus partially
limit start-up current peaks. If a constant current overload is detected, movement is halted after approximately 1
second.
3.1.5.9 Thermal protection
Built-in thermal protection signals temperature exceeded in the internal cooler and near the switching transistors
(approx. 100°C) during overload. A constant tone signals this condition. After an additional increase of approximately
15°C, the switching power elements are disconnected (this makes positioning impossible), also signalled by a constant
tone. Information about the thermal overload is recorded simultaneously in the blackbox.
3.1.5.10 Connectors
The inputs and outputs of the control unit have connectors of different type, meaning they may not be mixed. If
connectors of the same type (telephone ones) are used, mixing them up during assembly or servicing does not lead
to damage of the control unit.
3.1.6 Saved values
The control unit saves the following values
a) Statistical values
b) Records of previous events
c) Calibration values
d) Evidence of last action.

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Rechargeable battery
Input/output voltage
24 V DC
Class
II IP65
Maximum charging time
24 hours
Type
Lead-acid
Lead hermetic rechargeable batteries 2x12V/1.2 Ah are connected in series in a plastic housing, protected by a 15 A
fuse. The plastic housing is inserted in a control unit box. The rechargeable batteries serve as an emergency backup
power source for the bed while it is disconnected from the mains electricity or during transport. The rechargeable
battery type has no memory effect and should not be run fully flat to increase their lifespan.
3.2.1 Charging of rechargeable battery
The rechargeable batteries are charged intelligently from the control unit. The charging method used is called the
"Dual Level Float Charger" method (two charge levels, current limiting and automatic switching from charging to
maintenance mode).
Information about charging and modes of the rechargeable battery is signalled by the rechargeable battery’s LED as
follows:
Off
The rechargeable battery is charged.
(one exception may be a certain type of damage to
the rechargeable battery, which may occur due to its
age or unsuitable storage)
Flashes (on for short time, off for a longer time)
The rechargeable battery is charging.
If this type of signal occurs continuously over the long
term, it is necessary to replace the rechargeable
battery!
Flashes (on for a long time, off for a short time)
Low rechargeable battery voltage (either completely
flat or defective rechargeable battery). If this type of
signal occurs continuously over the long term, it is
necessary to replace the rechargeable battery!
Permanently on
Flashes rapidly
No rechargeable battery
(broken power lead, faulty rechargeable battery,
missing rechargeable battery faulty fuse)
The rechargeable battery is very flat, it is necessary to
replace or recharge it. Positioning of the bed is
disconnected, except for CPR function.
Battery

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Head side rails
The head side rails are at the sides of the head section of the bed's mattress platform rear section.
3.3.1 iBoard Basic
The iBoard Basic control panels are a basic control elements. They provide for configuration of bed functions, and
control, display of the weighing system and bed exit alarm. They are built into the outer side of both head side rails,
to which they are connected using six screws covered by six adhesive blanking plugs. They are connected using 6-
core cables with a mini Din connector to the cable in the side rail mechanism (It leads from the control unit).
The iBoard Basic is equipped with 2,4” display and keyboard with buttons. There are no positioning buttons on the
panel. On the rear side of the panel is a production and technical label, and the backrest accelerometer.
Due to absence of STOP button the bed must be equipped with ACP with STOP button.
3.3.2 Backrest accelerometer in iBoard Basic control panels
The backrest accelerometer is a part of the both iBoards Basic and is used to determine the tilt of the bed's
backrest. When the tilt of the backrest changes gradually due to gravity, the voltage in the accelerometer changes
and the angle of tilt is calculated. This information is sent to the control unit, which then displays it on the panel. The
angle of tilt is relative to the ground, which means that if the bed is not on a horizontal floor the backrest of the bed
is tilted, the angle of tilt of the floor (ground) is added to the angle of tilt of the frame. The control panels cannot be
interchange –Left must be on the left side and right on the right side. In case of incorrect connection it displays
wrong tilt angle of the backrest.

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3.3.3 Integrated Attendant control panel
It is connected to the control unit via a 14-core cable terminated by a 13-pin DIN connector. The ACP panel is
connected to the Plug&Play connector which is located under the head siderails. The ACP is fitted with STOP button.
The supervisor control panel contains a lock to block individual functions of the control unit, indicator lights for the
mode and condition of the rechargeable battery, a selection of special functions, and settings for standard positions of
the bed.
Foot siderails
3.4.1 Controllers in foot side rails
The control panels (left/right) allow the patient to set the position of the backrest and thighrest. Autocontour buttons
are also available.
Controller commands are detected as voltage increase via a cable connected to the control unit. The cables of the
side rail can be disconnected at the edge of the mattress platform using Mini Din connectors.

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Number
Description
1
iBoard Basic Cable (Left, Right)
2
Foot Siderail Control Cable
Siderail Cables
2
1
2
2
1
1

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Supervisor control panel (ACP)
In case the bed is not equipped with integrated ACP in head siderail the bed is with standard Supervisor control panel.
It is connected to the control unit via a 14-core cable terminated by a 13-pin DIN connector. The ACP panel is
connected directly to the control unit. The supervisor control panel is fiited with STOP button.
The supervisor control panel contains a lock to block individual functions of the control unit, indicator lights for the
mode and condition of the rechargeable battery, a selection of special functions, and settings for standard positions of
the bed.
Handset
The handset is an optional controler of the bed. The handset is available in two versions, with illuminated buttons
or without (or as a variant with mattress platform lift - up/down). The handset button lighting is active if the bed is
connected to the mains. The functions of both handsets are identical. A cable with an 8-pin DIN connector is connected
to a Plug&Play adaptor, which is linked to the control unit. The controller has an RC unit to detect short circuits.
Mobi-Lift®
Mobi-Lift® handles are optional ancillary handles with a built-in height adjustment button. They serve as an aid for
improving patient safety when getting up. They allow the patient to raise and lower the mattress platform. They are
at the calf section on both sides, dropped only in one axis in the direction of the feet. There are two switches in the
head of the controller, and a cable terminated with an RJ11 connector runs from them. The wires are connected in
order from the top - brown, yellow, white. The brown wire is for positioning upwards, the yellow cable has an RC
module, and the white cable is for positioning downwards. When any button is pressed, the middle connection (yellow,
RC module) is also activated. Both controllers (left and right) have the same cable connection. Mobi-Lift® controllers
are connected directly to the control unit.
Up
Down
RC
Brown
Yellow
White
Up
Down

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3.7.1 Left and right side rail limit switches (EMR ready Only)
The limit switches serve to detect the current position of the side rails. If the side rail is in the up position, the limit
switch is pressed via the mechanism of the side rails and a signal is sent to the integration module and vice versa.
Limit switches are not separatelyconnected, Left and right limit switches are in serie. The limit switches are connected
to the merging box. The concept of the limit switches is to determine that when the side rail is up, the given switch is
closed (in the case of non-connection, broken wire, the situation is detected as dangerous, i.e., side rail down)
Weighing module
The weighing module allows the bed's mattress platform load to be calculated. Four weighing sensors
(tensometers) are connected to the weighing module. The tensometer constants, the gravitational constant, as well
as the overall calibration constant generated during calibration of the weighing scales are saved to the weighing
module. The weight of the load is calculated from tensometer data and calibration constants and sent digitally to the
control unit. The processed information is displayed on the iBoard Basic. Information from scale module are in LINIS
screen (Abs 0, Tensometer constant, Absolute values, etc.). One part of the module is a speaker for the Bed Exit
Alarm (sound / space - 0.5 s/0.5 s). The weighing module is powered from the control unit by a 4-core cable with
RJ14 connector and is connected to the control unit.

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Weighing sensor (tensometer)
According to the load, the electrical resistance in the weighing sensor changes. The change is transmitted immediately
to the weighing module, which processes the values. There are four weighing sensors (tensometers) on the bed –2
at the feet and 2 at the head. They are secured using eight screws (6±2 Nm). The weighing sensors are connected to
the weighing module by a 4-core shielded cable. The functions of the individual cores are described in the table.
Model number of tensometer
8300-0674A
Model number of tensometer
8300-0674A
Sensors T1, T2
PIN
Meaning
Colour
Sensors T3, T4
PIN
Meaning
Colour
1
T1 shielding
transparent
1
T3 shielding
transparent
2
T1 –supply
brown
2
T3 –supply
brown
3
T1 + output
green
3
T3 + output
green
4
T1 –output
white
4
T3 –output
white
5
T1 + supply
yellow
5
T3 + supply
yellow
6
T2 shielding
transparent
6
T4 shielding
transparent
7
T2 –supply
brown
7
T4 –supply
brown
8
T2 + output
green
8
T4 + output
green
9
T2 –output
white
9
T4 –output
white
10
T2 + supply
yellow
10
T4 + supply
yellow

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Weight module and tensometers (S6015189ND)

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Integration module
The integration module serves as the bed's communication centre. It contains Ethernet and Wi-Fi communication
interfaces, via which it transmits data to the server about the operation of the bed. The integration module is connect
to the control unit.
The data from the sensors on the bed and other peripherals are loaded via the following interfaces:
More information about Safety monitor find in separated Safety monitor service manual.
Position
1
2
3
4
5
6
Function
Ethernet
Control Unit
N/A
Localisation
N/A
Diagnostic
Connector
RJ45
RJ11 6/4
N/A
RJ11 4/4
N/A
DIN13
The outputs from these interfaces are converted according to configuration into reports that are sent at regular
intervals to the server.
Each device is marked with a label containing important information about the integration module. The label contains
the product number of the product, power supply level, type of hardware, and software version. It also contains the
product serial number, which is important for identifying a device during communication with the server.
3.10.1 Indication of device mode
Three LEDs are in the lower part of the device (red, green, and blue) to indicate its mode.
Type
Indication
Description
Red
Peripherals
Each flash indicates one peripheral.
If red is on continuously for 30s, a short-circuit has been detected in the
peripheral's power supply, and this peripheral's power supply has been
switched off.
Green
Communication with
server
One flash –IM running.
Two and three flashes –communication with server.
Blue
Ethernet and Wi-Fi
One flash, Ethernet connected.
Two flashes, connected to Wi-Fi.
Three flashes, connected to both.

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EMR ready solution
Mattress platform actuators
Position
Description
1
Backrest linear actuator
2
Thighrest linear actuator
Mattress platform actuators
1
2