Husqvarna Automower 320 User manual

HUSQVARNA AUTOMOWER® 320/330X
TECHNICAL MANUAL

English - 1
1 Function 3
1.1 Husqvarna Automower®320 and 330X, what is what? 3
1.2 Introduction 4
1.3 Technical Data 5
1.4 Software 6
1.5 Mowing technique 7
1.6 The loop system’s control signals 9
1.7 The loop system’s status 10
1.8 Boundary loop 10
1.9 Guide loop 12
1.10 Searching methods to nd the charging station 12
1.11 Automatic detection of passages 14
1.12 Docking and charging 14
1.13 Battery 14
1.14 Sensors 15
2 Special menu functions 16
2.1 Quick Info 16
2.2 Ascertain the PIN code 20
2.3 Tools menu 20
2.4 Main menu overview 21
2.5 Tools menu overview 22
2.6 Tools menu, functions 23
3 Installation 30
3.1 Charging station 30
3.2 Boundary loop 31
3.3 Guide wire 33
3.4 Testing the installation 34
3.5 Calibrate guide 35
3.6 One robotic lawnmower for several working areas 36
3.7 Even mowing results in complex working areas 36
3.8 Safe operation on slopes 37
3.9 New loop signal 38
3.10 Installation examples 39
4 Autocheck Experience, Service program 42
4.1 Installation and login 42
4.2 Connection to the robotic lawnmower 43
4.3 Use 45
5 Repair instructions 52
5.1 Design and function 53
5.2 Disassembling and assembling the robotic lawnmower 56
5.3 Disassembling the charging station 61
5.4 Assembling the charging station 61
5.5 Replacing the charging strips 62
5.6 Replacing the battery 62
5.7 Replacing the main circuit board 62
5.8 Replacing the MMI circuit board 64
5.9 Replacing the GPS circuit board 65
5.10 Replacing the keypad 65
5.11 Replacing the buzzer 67
5.12 Replacing the main switch 67
5.13 Replacing the sensors 68
5.14 Replacing the blade motor 70
5.15 Replacing the wheel motor 71
5.16 Replacing the cutting height adjustment motor 71
5.17 Replacing the rear collision columns 72
5.18 Replacing the front collision columns 72
5.19 Replacing the main circuit board, charging station 74
5.20 Replacing the contact strips, charging station 74
5.21 Screw fasteners 75
6 Troubleshooting 77
6.1 Messages 78
6.2 Symptoms 83
6.3 Loop signal 88
6.4 Troubleshooting the loop signal 88
6.5 Finding a break in the boundary loop 90
6.6 Battery test 92
7 Maintenance and service 94
7.1 Cleaning 94
7.2 Winter storage 94
7.3 Service schedule 96
TABLE OF CONTENTS

WARNING
English - 2
The Technical Manual for the Husqvarna Automower®320 and 330X is a supplement to the Operator’s Manual.
The manual contains in-depth information about the robotic lawnmower and its peripheral equipment.
The Technical manual is intended for dealers, service personnel, etc.
Under no circumstances may the original design of the robotic lawnmower be modied without
the expressed permission of the manufacturer.
Unauthorized modications and/or components can result in serious disruptions and the risk
of personal injuries.
Only use original spare parts.
Husqvarna AB has a policy of continuous product development and therefore reserves the right to modify the design,
appearance and function of products without prior notice.
More support for dealers can be found at:
support.husqvarna.co.uk
Technical Manual Husqvarna Automower® 320 and 330X, Edition m/2014.
INTRODUCTION

English - 3
1 Function
1.1 Husqvarna Automower®320 and 330X, what is what?
The numbers in the illustration represent:
1. Body
2. Hatch to display and keypad
3. Stop button/Catch to open the hatch
4. Mounting for accessories, e.g. ultra sound and
lighting (not available with Automower®320)
5. Front wheel
6. Rear wheels
7. LED for operation check of the charging station,
boundary wire and guide wire
8. Contact strips
9. Parking button (not available with Automower®320)
10. Charging station
11. Rating plate
12. Display
13. Keypad
14. Cutting system
15. Chassis box with electronics, battery and motors
16. Handle
17. Main switch
18. Blade disc
19. Skid plate
20. Transformer
21. Loop wire for boundary loop and guide wire
22. Low voltage cable
23. Pegs
24. Connector for the loop wire
25. Screws for securing the charging station
26. Measurement gauge for help when installing the boundary wire
27. Couplers for the loop wire
28. Operator‘s Manual
29. Wire labels
1
10
7
5
4
18
19
14
15 17
16
6
2
20
22 23 24 25 26 27 28
29
9
3
11
13
12
21
8
1. FUNCTION

English - 4
1.2 Introduction
This Technical Manual contains important information
about the Husqvarna Automower®320 and 330X robotic
lawnmowers and their function, how to install them
and a number of installation examples. It also contains
information about special menu functions available for the
mower, the Autocheck Experience service program, repair
instructions and troubleshooting.
To make it easier to follow, the following structure is used:
• Text written in italics is a text that is shown on the
mower’s display or in the menus in the Autocheck
Experience service program.
• Words that are written in bold represent one of the
keys on the mower’s keypad or a key in the Autocheck
Experience service program.
• Words written in UPPERCASE and italics refer to the
position of the main switch and the different operating
modes available in the robotic lawnmower.
1. FUNCTION

English - 5
1.3 Technical Data
Data Automower®320 Automower®330X
Dimensions
Length 72 cm 72 cm
Width 56 cm 56 cm
Height 31 cm 31 cm
Weight 11.8 kg 13.2 kg
Electrical system
Battery Special Lithium-Ion battery,
18 V/3.2 Ah
Special Lithium-Ion battery,
18 V/6.4 Ah
Transformer 110-230 V / 28 V 110-230 V / 28 V
Mean energy consumption
at max use
30 kWh/month for a working area
of 2,200 m2
43 kWh/month for a working area
of 3,200 m2
Mean charging time 50-70 minutes 50-70 minutes
Mean cutting time 50-70 minutes 130-170 minutes
Noise emissions
Measured Noise Level 56 dB (A) 56 dB (A)
Guaranteed noise level 58 dB (A) 58 dB (A)
Mowing
Cutting system Three pivoted cutting blades Three pivoted cutting blades
Blade motor speed 2,300 rpm 2,300 rpm
Power consumption during cutting 30 W +/- 20 % 30 W +/- 20 %
Cutting height 2-6 cm 2-6 cm
Cutting width 24 cm 24 cm
Narrowest possible passage 60 cm 60 cm
Working area capacity 2,200 m2+/- 20 % 3,200 m2+/- 20 %
1. FUNCTION

English - 6
1.4 Software
The behaviour of the robotic lawnmower is controlled
by microprocessors and software. There is an MSW
program (Main SoftWare), an MMI program (Man Machine
Interface) and a SSW program (Subsystem SoftWare).
The main program (MSW) interprets the signals from the
sensors and controls the operation accordingly.
The MMI program checks the presentation of information
in the display and the inputting of, for example, keystrokes
on the keypad. The MMI program contains the texts that
are shown in the display.
The SSW program controls the blade motor, among other
functions.
This Technical Manual for the Automower®320 and 330X
covers versions 4.00.00 of the main program and 4.00.00
of the MMI program.
1.4.1 Ascertaining the program version
1. Set the main switch to position 1.
2. When the start page is displayed: Keep the 0key
pressed in for two seconds to go to Quick Check.
3. Select Info and press OK.
4. Select General and press OK.
5. The main program’s version is indicated on the
line that starts MSW ver:, e.g. 3.08.00. The MMI
program’s version is indicated on the line that
starts MMI ver:, e.g. 3.02.00. The SSW program’s
version is indicated on the line that starts SSW
ver:, e.g. 3.00.00.
6. Hold down the BACK button for two seconds
to exit Quick Check and return to the main menu.
It is important that the robotic lawnmower is
programmed with the latest software versions.
The Husqvarna Group is continuously improving
the mower’s behaviour and performance, which
results in new software versions.
MSW 3.08.00
MMI 3.02.00
SSW 3.00.00
Software type 320
SW Prod.
1. FUNCTION

English - 7
1.5 Mowing technique
The mowing system is based on an efcient and energy
saving principle. Unlike many conventional mowers, the
robotic lawnmower cuts the grass instead of knocking
it off.
1.5.1 Mowing in different weather
conditions
Rain
We recommend you allow the robotic lawnmower to
mainly mow in dry weather to obtain the best possible
result. The robotic lawnmower can also mow in the
rain, however, wet grass easily sticks on the robotic
lawnmower and there is a greater risk of slipping
on steep slopes.
Thunder
If there is a risk of thunder, all connections to the
charging station must be disconnected. This is done
to avoid damage to the circuit board in the charging
station.
1.5.2 Blades
It is more important to have good condition and sharp
blades on a robotic lawnmower than on a conventional
mower. It is the principle of the cutting the grass instead
of knocking it off that makes this difference. The double
edged blades together with the technology that rotates
the blade disc in both directions increase the life of the
blades.
In order to keep the blades sharp for as long as possible
it is important to keep the lawn free from branches, small
stones and other objects.
Worn blades should not be ground. This is to prevent
the mowing system from becoming imbalanced.
Poor or dull blades can result in the grass bending
instead of being mown, the tops become frayed and the
mower may nd it difcult to mow a large working area.
All blades and screws must be replaced at the same
time to ensure the cutting system is balanced.
There are many different types of blades and they
are sold in various package sizes. Use only approved
original blades from the Husqvarna Group. From the
start of 2011 these are marked with a Husqvarna
symbol.
1. FUNCTION

English - 8
1.5.3 Irregular mowing pattern
The robotic lawnmower mows the lawn in an irregular
pattern. This gives a very even mowing result. In addition,
there are no distinctive tracks left in the lawn, which is
often the case when using a conventional lawn mower.
Spiral cutting
Sometimes the robotic lawnmower can change the
mowing pattern and start to mow in a spiral pattern
instead. This is called spiral cutting. The purpose of spiral
cutting is to quickly get the same length of grass over the
entire working area.
When the robotic lawnmower starts spiral cutting this
means it has perceived the lawn in an area to be longer
and/or thicker than before. The length/thickness of the
lawn in this area does not need to differ that much from
the other areas for the robotic lawnmower to start spiral
cutting. Sometimes the difference is hardly visible.
The robotic lawnmower always attempts to keep the
blade disc at an even speed. Different degrees of power
are used for this depending on the length/thickness of
the grass. The Automower®compares the instantaneous
power with an average power value from the latest hours
of mowing. This means that, when the robotic lawnmower
enters an area where the lawn is longer/thicker than
before, the instantaneous power will differ from the
average power and the Automower®will then start
spiral cutting.
The factory setting for Intensity is Medium for the
Automower®to begin spiral cutting.Intensity can be set
between Low/Mid/High using the Settings - Spiral cutting
menu. It is also possible to entirely shut down the spiral
cutting function in this menu. The Low setting means that
the robotic lawnmower begins spiral cutting less often.
Spiral cutting is only activated in the automatic
operating position, i.e. the Main area mode. Mowing in
the Secondary area mode does not allow the robotic
lawnmower to begin spiral cutting.
1. FUNCTION

English - 9
1.6 The loop system’s control
signals
The loop system consists of a boundary wire and guide
wires connected to the charging station. Together they
essentially comprise four different signals:
• A signal
• F signal
• N signal
• Guide signals (320 has only one guide wire
while 330X can have up to two guide wires)
To check the A, F and Guide signals, see the 2.3 Tools
menu on page 20.
• A signal
The signal that the charging station transmits
over the loop and which sets the boundaries
for the working area for the robotic lawnmower.
Coded information is transmitted via the
A signal to the mower. If there is no A signal,
for example due to a break in the boundary loop
or in the power supply to the charging station,
the robotic lawnmower
stops and displays the
No loop signal message.
• F signal
Remote signal from the charging station which
is generated by a loop in the charging station
plate. The F signal is used so that the mower
knows that it is in the vicinity of the charging
station.
There may be reasons to reduce the range
of the charging station in rare cases. It may be
necessary if for instance the charging station
is placed close to a bush or wall which prevents
the robotic lawnmower from docking with the
charging station despite making contact with
the charging station’s signals. The setting is
made via Installation - Find charging station -
Charger.
The following ranges apply for each setting.
Setting Range
Min 0 m
Medium approx. 3 to 4 m
Max approx. 6 to 8 m
• N signal
The near signal from the charging station
which reaches about 1 metre. The signal is
generated by a loop in the charging station
plate. The N signal guides the Automower®
correctly into the charging station, so that the
charging strips and contact strips make contact.
1. FUNCTION

English - 10
The Automower®cannot enter the charging
station when there is no N signal. The mower
will eventually stop and display the Low battery
voltage fault message.
• Guide signal
The signal that the charging station transmits
through the guide wires. The guide signals lead
the mower to the charging station, but can also
be used to direct the mower to a remote area.
Guide 1 and Guide 2 (only 330X) are marked
by the connections on the rear of the charging
station.
1.7 The loop system’s status
The loop system’s status is most easily checked using
the LED in the charging station. Check the loop signals
by checking what the LED is indicating.
• Solid green light = All signals are good.
• Green ashing light = The A signal has been
turned off in the boundary loop (ECO mode).
• Blue ashing light = No signal in the boundary
loop (A signal). Most likely a break in the
boundary loop.
• Red ashing light = No F signal. Most likely
interruption in the charging station’s antenna
plate.
• Solid blue light = Weak signal in the boundary
loop (A signal). This may depend on the
boundary loop being over 800 m in length
or that the wire is damaged. If the mower still
works, this is not a problem.
• Solid red light = fault in the circuit board in the
charging station.
See 6.4 Troubleshooting the loop signal for suggestions
on steps to take in case of errors.
1.8 Boundary loop
The strength of the signal in the boundary loop is
constant in a loop that is up to approx. 800 metres in
length. If, however, the loop is longer than 800 metres,
the strength can start to diminish, even though it is still
sufcient.
The strength of the loop signal varies depending on
the distance to the wire. The strength of the signal is
high right next to the wire. The strength subsequently
diminishes the farther away from the wire you get.
Outside the wire the signal is negative and its strength
diminishes more rapidly. The Signal quality reading
determines whether the signal from the boundary wire
is strong enough for the mower to be in working order.
Table 1: Colours in the charging station’s LED
Colour Status
Solid green light All signals are OK
Green ash ECO mode
Blue ash Break in the boundary loop
Red ash Break in the F or N loops
Solid blue light Boundary loop too long
Solid red light Faulty circuit board
1. FUNCTION

English - 11
Signal quality should always be 100% for satisfactory
function The signal from the boundary loop is designated
the A signal. See the illustration below for examples of
high and low signal strengths.
The strength of the A signal also varies along the
boundary loop depending on the proximity to other parts
of the loop. The strength of the signal is affected by the
size of the working area, islands, headlands, passages
and corners. The signal can also be affected by magnetic
objects in the ground or in nearby walls and buildings.
The signal is weakened in these areas. Examples
of magnetic objects are iron fences, iron girders and
reinforcement bars. Grass areas laid on concrete roofs
can therefore receive a weakened signal.
When the signal is reinforced or weakened, it is normal
that both low and high signal strengths are not always
available along the entire boundary loop.
The loop signal’s reception and amplication in the mower
can also vary by +/- 10% from one mower to another.
This means that at the same point in an installation,
one mower can display A=90 and another one A=100.
The charging station’s circuit board and the mower’s loop
sensor can also give certain variations between different
machines.
See 2.2.1 Info for more information on how the loop signal
can be read in the mower’s display.
Cable
15 m
160
100
40
100
80
60
1. FUNCTION

English - 12
1.9 Guide loop
The guide wire, together with the part of the boundary
loop that comprises the return to the charging station,
is called the guide loop. The current in the guide loop
always goes from the guide wire to the left in the
connection between guide wire and boundary loop.
The strength of the guide signal varies like the A signal
depending on the distance to the guide loop. Inside
the guide loop the signal is positive and the strength
subsequently diminishes the farther away from the wire
you get. Outside the guide loop, the signal is negative
and the strength of the signal diminishes more rapidly.
The area inside the guide loop is designated the guide
area. The robotic lawnmower always tracks the left side
of the guide wire in the direction towards the charging
station, i.e. the mower follows the negative values
on the guide signal.
The strength of the signal in the guide loop depends
on the loop’s length. The guide loop must therefore not
be longer than approx. 400 metres.
The longer the guide loop, the lower the strength
of the signal and the more difcult it is for the robotic
lawnmower to follow the guide wire.
The strength of the guide signal also varies along the
guide loop depending on the proximity to other parts
of the guide loop and is affected by islands, headlands,
passages and corners.
To reduce the risk of the mower losing contact with the
wire in corners, it is recommended to not lay the wire
at 90 degree angles. It is better to lay the wire in two
135 degree angles.
1.10 Searching methods to nd the
charging station
When the charge level in the battery has dropped to
1,000 mAh or the voltage in the battery has dropped to
17.5 volts, the robotic lawnmower shuts down the blade
motor and starts searching for the charging station.
The Automower®can be set to search for the charging
station in one or more of three different ways: Irregular,
Follow boundary home and Follow guide home.
Using the settings options in the Installation - Find
charging station menu, the three search methods can
be combined to optimise the search for the charging
station. The required search method or methods
depends on the shape of the garden.
Irregular is the basic search method for nding the
charging station and works well in open areas. There is
no risk of tracks forming. The Follow boundary home
and Follow guide home search methods can however
give considerably shorter search times in more complex
installations with areas divided by passages or openings.
135º
135º
90º
1. FUNCTION

English - 13
The Automower®always starts a search for the charging
station using the Irregular method, on the condition
that the delay times for the boundary wire or any of the
guide wires are not set to 0 minutes.
Irregular searching means that the Automower®runs
in an irregular pattern until it encounters the F eld by
the charging station. The strength of the F signal which
is required for the mower to react is set in the Charging
station range setting.
If a guide wire is installed and the delay time for this
wire has elapsed, the Automower®will start to search
for and follow it to the charging station. If the delay
time for the boundary loop also elapses before the
Automower® has found the charging station, the mower
will also start searching for the boundary loop. If the
mower then nds and follows the boundary loop, it
keeps going until it has found the charging station or
crosses the guide wire. If it crosses the guide wire, the
robotic lawnmower will follow it instead to the charging
station.
When the mower follows the boundary loop or a guide
wire, it travels a distance into the F eld before the F
and N signals direct it correctly into the charging station.
If the boundary loop is laid around an island, the
Automower®follows the loop twice around the island
before it leaves it and travels on to encounter the
boundary loop at another point.
If the Automower®encounters an obstacle while
following the boundary loop, it passes it by travelling
in one or more loops around the obstacle.
If the robotic lawnmower encounters an obstacle when
it follows a guide wire, it passes it by running closer
to the guide wire.
1. FUNCTION

English - 14
1.11 Automatic detection of
passages
When the robotic lawnmower follows a guide wire it
does so at a maximum distance dened by the corridor
width setting (Installation - Advanced - Corridor width).
The distance is randomly varied from one search
to another to reduce the risk of tracks forming.
If the robotic lawnmower is about to enter a passage
where the loop signal from the boundary wire is
stronger, the robotic lawnmower will run closer to
the guide wire to make its way through the passage.
The automatic passage detection can be cancelled
in the Installation - Advanced - Auto passage handling
menu. If this function is disabled, the robotic lawnmower
will not be able to regulate the distance it follows the
guide wire, and the corridor width must as result be
modied to cope with all passages in the installation.
1.12 Docking and charging
When the mower enters the charging station, this is
called docking.
When the charging strips on the robotic lawnmower
make contact with the contact strips on the charging
station, the mower stops and charging begins.
1.13 Battery
The robotic lawnmower is equipped with a Li-Ion battery.
Compared with a NiMH, for example, Li-Ion has very
good properties, even at high ambient temperatures.
The battery also has low self-discharge, i.e. it can remain
unused for a longer period than, for example, NiMH
without being damaged. Counted in number of charging
cycles, the service life is also expected to be longer for
Li-Ion than NiMH.
Charging is primarily controlled by the transformer.
The normal charge current is 2.1 A for 320 and 4.2 A
for 330X. When the voltage in the battery approaches
the nominal voltage of 21 V the physical properties
in the battery cause the charge current to decrease.
When the charge current has dropped to 0.3 A, the
mower is considered fully charged and charging stops.
The battery is considered fully charged when the battery
reaches 80% of its total capacity. To charge the battery
to 100% would take too long because the charge
current is so low. The most rational way of using Li-Ion
is therefore to stop charging at 80%. The maximum
utilised capacity is thus 80% of the battery’s total capacity.
How to measure the condition of the battery is described
in 6.6 Battery test on page 94.
Model 320 330X
Charge Current 2,1 A 4,2 A
Battery Capacity 3,2 Ah 3,2 Ah
Used Capacity 2,6 Ah 5,2 Ah
Charge Time, min 50-70 50-70
Cutting Time, min 50-70 130-170
1. FUNCTION

English - 15
1.14 Sensors
There are several types of sensors in the robotic lawnmower.
The front collision sensor (1), rear collision sensor (2), tilt
sensor (3) and lift sensors (4) have the task of protecting
both mower and user. The rear (5) and front (6) loop
sensors are used to control the mower within the working
area, to position the mower when docking, tracking the
guide wire, etc. The cutting height sensor (7) regulates the
cutting height of the blade disc.
1.14.1 Collision sensors
The collision sensors are the sensors that detect when
the mower has run into a xed object. When the sensors
are activated, i.e. when the mower collides with an object,
the mower stops and backs away to then turn to continue
in a different direction. The four collision columns on the
back of the mower capture the motion of the mower body
in relation to the mower chassis.
1.14.2 Tilt sensor
The tilt sensor is the sensor that detects the mower’s
inclination in relation to the horizontal plane. X-angle
indicates front to rear inclination, and the Y-angle indicates
left to right inclination. The value from the tilt sensor is used,
among other things, to compensate the operation of the
wheel motors when mowing on slopes.
1.14.3 Lift sensors
The lift sensors are the sensors that sense if the mower
is being raised off the ground. This is done with the help of
the mechanical design and magnets in each of the two front
collision columns. If the “lift” signal is indicated, the mower
and the blade disc stop immediately. The mower will then
try to free itself of the obstacle that caused it to lift off the
ground by backing up and turning several times.
1.14.4 Loop sensors
The loop sensors detect the signals from the boundary loop,
the guide wires and the N and F elds from the charging
station. The mower can only detect the signals if it has been
coded with the charging station. See 3.9 New loop signal on
page 38.
1.14.5 Cutting height sensor
The cutting height sensor detects the position of the
cutting disc and is used when adjusting the cutting height.
The cutting height sensor must be calibrated to obtain the
correct cutting height when the cutting height setting is
changed. The calibration of the sensor is carried out during
among others the start-up sequence.
3
6
7
5
1
2
4
4
1. FUNCTION

English - 16
2 Special menu functions
2.1 Quick Info
Quick Info is a display mode where you can quickly
see information about program versions, battery, loop
signals, sensors and operating history.
When the start page or the main menu is displayed:
Press and hold down the 0key for two seconds
to access the “Quick Info” function.
Quick Info is divided into Info and History. Info displays
current status and History displays operating history
regarding messages and search times saved.
Browse among the menus using Arrow down and
press OK to select the required function. Keep the
BACK button pressed in for two seconds to leave the
Quick Info function and go to the main menu.
2.1.1 Operate with the hatch open
For a number of the display modes below, for instance
Loop, it may be necessary to make a note of the values
when the mower is operating. To do this, the mower
hatch must be open while it operates.
1. Select one of the display modes shown
in Quick Info.
2. Start the mower by pressing the START
button.
3. Instead of closing the hatch as is normal,
press in the hatch locking devices with the
hatch open.
4. The mower will now run as normal but the
quick information can be read at all times
in the display.
5. The mower can be stopped as normal
by pressing the stop button.
2.1.2 Info
The Info - General - SW display mode shows:
• MSW: The version of the MSW (Main
Software) program (also called the main
program), e.g. 3.08.00.
• MMI: The version of the MMI (Man Machine
Interface) program, e.g. 3.03.00.
• SSW: The version of the SSW (Subdevice
Software) program, e.g. 3.00.00.
MSW 3.08.00
MMI 3.03.00
SSW 3.00.00
Software type 320
SW Prod.
2. SPECIAL MENU FUNCTIONS

English - 17
• Software type: The model the main program
is intended for e.g. 320.
• MSW date: Date of issue of MSW, in the
YYYY-MM-DD format.
• MMI date: Date of issue of MMI, in the YYYY-
MM-DD format.
• Lang group: The languages that are available
in the mower.
The Info - General - Prod. display mode shows:
• Serial no: The mower’s serial number. This
number must correspond with the serial
number on the mower’s rating plate.
• Prod. date: The mower’s date of manufacture
in the YYYY-MM-DD format.
• MCB prod: The main circuit board’s date
of manufacture in the YYYY-MM-DD format.
• MCB serial no: The main circuit board’s serial
number. This is not linked with the mower’s
serial number.
The Info - Battery display mode shows information
about the batteries (Batt 1 and Batt 2). As the
320 model has only one battery only Batt 1 is shown.
Alternating between Batt 1 and Batt 2 provides
information on each battery.
• Voltage: The battery’s current voltage level.
About 20.5 V indicates a fully charged battery
and about 17 V indicates a at battery.
• Chargings: The accumulated number of
charges since date of manufacture or the
counter was reset.
• Charge level: Shows the charge remaining in
the battery. When the battery is fully charged,
the charge is approximately 5,100 mAh
(2,600 mAh for 320). When the charge has
dropped to approximately 1,000 mAh the
mower returns to the charging station.
• Current: Shows nominal regulated charge
current to and from the battery. A positive
value indicates that the battery is charging
and a negative value indicates that the mower
is using current from the battery.
• Temp: Shows current temperature in the
battery.
• Capacity: Shows the maximum capacity for
the battery, i.e. 2,600 mAh.
Serial no: 130100001
Prod. date 2013-01-05
MCB, prod 2012-11-05
MCB, serial no 124800001
SW Prod.
Voltage: 20.1 V
Chargings: 625
Charge level: 2,032 mAh
Current: -98 mA
Batt 1 Overview
2. SPECIAL MENU FUNCTIONS

English - 18
The Info - Loop - A signal display mode shows the
loop signal from the boundary loop measured through
the loop sensors in the mower. The value should lie
between approximately 40 and 320 to ensure good
functionality. The closer to the loop the mower is,
the higher the value. When the robotic lawnmower
is directly over the loop, the value is 0 and when the
mower is outside of the loop, the value is negative.
The A signal is shown for all four loop sensors:
• Front L: Front left loop sensor
• Front R: Front right loop sensor
• Rear L: Rear left loop sensor
• Rear R: Rear right loop sensor
The Info - Loop - G, F, N display mode shows the loop
signals from the Guide wires and the F and N elds
measured through the loop sensors on the mower.
The signals are shown for all four loop sensors:
• Front L: Front left loop sensor
• Front R: Front right loop sensor
• Rear L: Rear left loop sensor
• Rear R: Rear right loop sensor
To ensure good functionality in guide wires, the value
for the Guide signal should be (-) 70 - 120 beside each
guide wire.
The Info - Loop - Quality display mode shows the loop
system’s signal quality measured through the loop
sensors in the mower. The loop signals can only be
interpreted if the value for Quality is 100%. If the value
is 99% or lower, the loop system does not function
correctly and thus none of the values displayed for the
signals are correct.
The Info - Sensors - Status display mode shows:
• Collision, front and Collision, rear: One way
of testing the collision sensor is to hold the
mower chassis by the stop button and move
the body forward and back with the handle
at the rear. The display shows Yes or No.
Continue to press on the body until you see
that the collision sensors work.
• Lifted, R and Lifted, L: To test the lift sensors,
lift up the front part of the body. When the
body is lifted up the lift sensors are activated
and the mower’s display shows Yes. When
the mower is in the lowered position No is
displayed.
Front L Front R Rear L Rear R
G1 signal 280 282 270 273
G2 signal 187 185 174 172
F signal 324 322 274 270
N signal 110 108 98 97
A signal G, F, N Quality
A signal G, F, N Quality
Signal quality, front L 100%
Signal quality, front R 100%
Signal quality, rear L 100%
Signal quality, rear R 100%
Collision, front: No
Collision, rear: No
Lifted, R: No
Lifted, L: No
Status Temp
A-signal, front L 150
A-signal, front R 148
A-signal, rear L 140
A-signal, rear R 142
A signal G, F, N Quality
2. SPECIAL MENU FUNCTIONS