Agreto B400 User manual

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User manual
AGRETO three-point-scale
Weighing indicator B400
06 April 20 7
ATTENTION
ATTENTIONATTENTION
ATTENTION! Read the operating instructions in this user manual before operating the
equipment for the first time in order to prevent damage to your scale or implement!

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Table of contents
1 Introduction ........................................................................................................... 3
2 Scope of delivery .................................................................................................. 3
3 Intended use ......................................................................................................... 4
4 Safety .................................................................................................................... 5
4.1 Safety guidelines for the purchaser ................................................................................ 5
4.2 Safety guidelines for operating and assembling personnel ............................................ 5
5 Specifications ....................................................................................................... 7
6 Getting started .................................................................................................... 10
6.1 Setting lower link distance ............................................................................................ 10
6.2 Setting mounting height ................................................................................................ 10
6.3 Mounting the three-point scale ..................................................................................... 12
6.4 Connecting the weighing indicator ............................................................................... 12
6.5 Connecting the distance sensor (if available) ............................................................... 14
6.6 Connecting the cable to the signal socket (if available) ................................................ 14
6.7 Connecting the GPS speed sensor (if available) .......................................................... 15
6.8 Connecting the working position sensor (if available) .................................................. 15
7 Weighing indicator .............................................................................................. 16
7.1 Switching on the weighing indicator ............................................................................. 16
7.2 Zeroing .......................................................................................................................... 16
7.3 Standard weighing procedure ...................................................................................... 17
7.4 Weighing with tare function ........................................................................................... 17
7.5 Switching off the weighing indicator ............................................................................. 17
7.6 Settings for displaying the spread rate/ha .................................................................... 18
7.7 Calculating the spread rate ........................................................................................... 20
7.8 General settings ............................................................................................................ 23
7.9 Calibration ..................................................................................................................... 23
7.10 Summing function ..................................................................................................... 25
7.10.1 Setting the summing function .................................................................................... 25
7.10.2 Performing a summation ........................................................................................... 26
7.10.3 Retrieving the sum ..................................................................................................... 26
7.10.4 Deleting the sum ....................................................................................................... 26
7.11 Error messages ......................................................................................................... 27
8 Troubleshooting .................................................................................................. 28
9 Maintenance and cleaning ................................................................................. 30
10 Warranty ............................................................................................................. 30
11 Declaration of conformity ................................................................................... 31
12 Disposal .............................................................................................................. 32
13 Contact information ............................................................................................ 32

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1Introduction
Thank you very much for choosing the AGRETO three-point scale. You have just
purchased a robust tool for everyday use.
The AGRETO three-point scale can only be employed as a checkweigher for
internal use. It's not allowed to be used for legal transactions.
Please read this manual carefully before putting the scale to use.
As in common parlance the word 'load' is used instead of 'mass' in this user
manual.
2Scope of delivery
Standard scope of delivery
Standard scope of deliveryStandard scope of delivery
Standard scope of delivery
Steel construction with built-in load cells
2 top link brackets with 160 mm hole spacing
2 top link brackets with 130 mm hole spacing
1 top link and 2 lower link pins with linchpins
Weighing indicator with connecting cables
This user manual
Optional accessories:
Optional accessories:Optional accessories:
Optional accessories:
Lower link hook (instead of ball ends/connection eyes)
3 5 or 10 m extension cable for the weighing signal
Two-line B400 weighing indicator with distance sensor (instead of the
standard single-line B300 weighing indicator)
Connecting cable to the signal socket for the speed signal (only in
combination with the B400 weighing indicator)
GPS speed sensor for the speed signal (only in combination with the B400
weighing indicator)

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3Intended use
The AGRETO three-point scale is a scale for weighing three-point implements
and/or their loads. It's mounted at the three-point linkage between tractor and
implement.
Tractors with Category II and III top links and lower links are suitable but only
Category II implements can be attached.
Only implements with a total weight of 6 000 kg can be attached.
The scale must be set to the exact same mounting height as the attached
implement.
The implement can only be connected to the scale via the two lower link pins
and the top link pins.
No significant push/pull forces must be transferred which means that soil tillage
implements can be attached. Seed drills with normal sowing coulters are
acceptable.
The weighing procedure can be performed during standstill or whilst driving.
Three-point scales aren't officially calibratable and therefore not authorized to
determine weights for legal transactions. The scale is meant exclusively as a
checkweigher for internal use.

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5
Safety
4.1 Safety guidelines for the purchaser
IMPORTANT!
Make sure that every person who works with the AGRETO three-
point scale for the first time has read and understood this user
manual.
4.2 Safety guidelines for operating and assembling personnel
Appropriate equipment must be used when employing lifting
machinery for transport.
Persons who are involved with mounting removing or setting up
the three-point scale must wear safety shoes.
Persons who are involved with mounting removing or setting up
the three-point scale must wear safety gloves.

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During transport the scale or pallet can slip on the vehicle.
Transport and loading personnel must be instructed to securely
attach loads.
Be aware of the risk of crushing between the three-point scale's
moving parts during mounting removing and setting up.
The scale must not be stored or used in a potentially explosive
environment.
Be careful not to trip over parts or tools that could be lying around
you.

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5Specifications
Scale construction
Scale constructionScale construction
Scale construction
Steel construction with tubes and laser-cut parts
Internal load cells
Roller supported mounting for implement attachment
Designed for implements with a total weight of 6 000 kg
Lower link attachment to the tractor: Pins Ø28 mm 64 mm inner width for
lower link with CAT II ball end CAT II hook and ball or CAT III hook and
CAT II reduction balls
Lower link attachment to the implement: Ball joint Ø28.4mm 51 mm width
or a CAT II Walterscheid quick coupling-hook
Lower link distance: CAT II standard 87.5 cm can be adjusted infinitely
between 85 and 90 cm with set screws can be adjusted manually up to
105 cm for attachment to a rigid axle
Top link attachment to the tractor: Pins Ø25.4 mm 64 mm inner width for
top links with CAT II ball joint or CAT II hook and ball
Top link attachment to the implement: CAT II mounting brackets Ø26 mm
Distance lower link-top link on the attachment: infinitely adjustable between
48 and 68 cm
Horizontal distance lower link pins-implement pins (lower link shifted
backwards): 160 mm (200 mm for hooks)
Horizontal distance top link pins-implement pins (top link shifted
backwards): 130 mm or 160 mm depending on the mounting brackets
Net weight approx. 80 kg including pins
Dimensions: 104x84x20 cm (LxWxH lying down)

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Load cells
Load cellsLoad cells
Load cells
2 high resolution shear force load cells each at 5 000 kg 3mV/V 350 Ohm
Total nominal load: 10 000 kg
120% overload 150% breaking load
Protection class IP68 (dust- and waterproof)
Operating temperature: -35 up to +65 °C
Temperature compensated: -10 up to +40 °C
Weighing indicator
Weighing indicatorWeighing indicator
Weighing indicator
6-digit LED-backlit LCD display with 20 mm high digits
12 to 24 Volt power supply
Operating temperature: -10 up to +50 °C
Real-time clock
Tare through the push of a button (zeroing the empty implement)
Shockproof and spraywaterproof
Stabilized indicator for reading while driving
OPTIONAL: Two-line weighing indicator with 30 / 20 mm high digits and
special programming to display the spread rate per hectare

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Cabling
CablingCabling
Cabling
Internal load cell connection with waterproof box (IP67)
3.5 m long weighing signal cable with special sheathing from the outlet on
the front of the right frame part to the indicator
Waterproof threaded plug connector (IP68)
2 m power supply cable with a flexible universal plug (for cigarette lighter
and standard sockets according to DIN EN ISO 4165) with integrated and
replaceable fuse
Accuracy
AccuracyAccuracy
Accuracy
+/- 0.02% load cell accuracy
+/- 1 to 2% accuracy when operated properly in everyday conditions
5 kg weighing indicator resolution
Readability during standstill or smooth ride: very good
Readability during bumpy ride: sufficient
Deviation when load shifts (front back left right): none when operated
properly
Deviation on slopes: hardly noticeable up to 5%
Deviation when inclined sidewards: hardly noticeable up to 5%
Deviation when not attached vertically: hardly noticeable up to 5% can be
compensated through calibration

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6Getting started
6.1 Setting lower link distance
Measure the necessary horizontal distance between both lower link
mounting points on your implement (for instance a fertilizer spreader). The
standard dimension for Category II is 87 cm but in practice it's between 86
and 88 cm.
Set the required distance on your three-point scale with the adjustment
screws. Use the exterior nuts of the adjustment screws on both sides of the
three-point scale to keep the construction symmetrical.
Set the scale's width in such a way that there's a little space left between
scale and implement so that the scale isn't under tension.
When your implement has a rigid mounting axle you must completely
remove the adjustment nuts on one side of the three-point scale pull the
scale apart during mounting and push it back together again.
6.2 Setting mounting height
A correct setting of the mounting
height is of paramount
importance for your scale's
accuracy.
The horizontal and vertical top
link mounting brackets must be
in a perfect right angle relative to
each other. This will make sure
that the load's position doesn't
influence weighing accuracy.

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Proceed as follows:
Measure the necessary vertical distance on your implement between lower
link pins and top link pins. If there are several positions for your top link
and/or lower link choose a combination where the distance is between 50
and 65 cm.
Determine which of the 4 holes on the three-point scale's vertical top link
brackets must be used for the distance you measured. Loosen the 4
interior nuts of the adjustment screws set the measured distance and
tighten the nuts again.
 The distance can still be readjusted after the implement is attached but
first relieve any load from the scale. Slightly loosen the nuts and use a
rubber hammer to shift the brackets.
ATTENTION: The exact setting of mounting height is not only a prerequisite for
ATTENTION: The exact setting of mounting height is not only a prerequisite for ATTENTION: The exact setting of mounting height is not only a prerequisite for
ATTENTION: The exact setting of mounting height is not only a prerequisite for
accurate weighings. When the angle is not exactly right the three
accurate weighings. When the angle is not exactly right the threeaccurate weighings. When the angle is not exactly right the three
accurate weighings. When the angle is not exactly right the three-
--
-point scale
point scale point scale
point scale
and/or
and/or and/or
and/or your implement could get damaged or deformed.
your implement could get damaged or deformed. your implement could get damaged or deformed.
your implement could get damaged or deformed.

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6.3 Mounting the three-point scale
You can choose whether you first want to mount the three-point scale to the
tractor or the implement. When your implement has a rigid axle you must
first mount the scale to the implement. Of course the scale can be left
mounted on the implement if it is only used for that implement.
Try to use the three-point scale in a position that is as vertical as possible.
Either use the brackets with 130 mm hole spacing or the brackets with 160
mm hole spacing. If vertical mounting isn't possible the scale must be
calibrated to obtain correct results. Deviations are hardly noticeable when
under 5 degrees in comparison to the vertical position.
6.4 Connecting the weighing indicator
Position the weighing indicator in a suitable spot in the vehicle.
Connect the power supply cable. Either use the provided cable or connect
the indicator directly to the electric system. The indicator can be run on a
voltage between 12 and 24 Volt. If during operation the power supply to the
indicator is interrupted it will remember the scale's zero point but not a
tare point that might have been set.
Connect the weighing signal cable to the plug on the three-point scale. You
could run the cable along the hydraulic tubes to prevent damage.

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The weighing signal cable is assigned as follows:
Front view cable socket Front view cable plug
on the scale on the connecting cable
Number
Description
Function
1
EX
-
Supply
-
2
EX +
Supply +
3
SI
-
Signal
-
4
S
I +
Signal +
5
6
7

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6.5 Connecting the distance sensor (if available)
In this variant driving speed is determined by a distance sensor. The sensor has
a blue cap and the cables are marked blue near the plug connectors.
Mount the 4 magnets to the rim of a wheel (or on the front axle for tractors with
rear wheel drive) using the included screws. Make sure the magnets are evenly
distributed.
Mount the blue capped sensor with a flat bar in such a way that the sensor tip
points towards the magnets. Set the distance between sensor and magnets at
5 mm.
As soon as the sensor is correctly installed and connected the weighing
indicator will display the driving speed in 10 second intervals. To check the
driving speed the working position sensor must be in the working position
(=valve open) or unplugged.
The amount of impulses per 100 m is set in the weighing indicator.
6.6 Connecting the cable to the signal socket (if available)
In this variant driving speed is determined via a connecting cable to a signal
socket. The connecting cable with 4-pole plug is connected to the cable that is
marked blue. The other side is connected to the signal socket.
The weighing indicator displays the driving speed in 10 second intervals. To
check the driving speed the working position sensor must be in the working
position (=valve open) or unplugged.
The amount of impulses per 100 m is set in the weighing indicator.

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6.7 Connecting the GPS speed sensor (if available)
In this variant driving speed is determined via a gps receiver. The receiver is
positioned on the roof and the 4-pin plug is connected to the cable that is
marked blue.
The weighing indicator displays the driving speed in 10 second intervals. To
check the driving speed the working position sensor must be in the working
position (=valve open) or unplugged.
The amount of impulses per 100 m is set in the weighing indicator.
6.8 Connecting the working position sensor (if available)
The sensor has a red cap and the cables are marked red near the plug
connectors.
The working position sensor tells the weighing indicator whether there is any
output. That way the weighing indicator takes into account that some stretches
are driven in the headland or that the valves are closed and stops calculating
total completed area.
Mount the working position sensor near the valve or your implement's volume
adjuster. The sensor must be mounted in such a way that it is positioned in front
of the magnet when closed. The magnet should move away from the sensor
when opened.
When there are separate adjustment mechanisms for the left and right side
mount the sensor and magnet on the side that opens when spread width is
halved.

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7Weighing indicator
7.1 Switching on the weighing indicator
Switch the weighing indicator on with the small button on the far left. The
indicator shows a start-up sequence followed by the scale's actual load based
on the most recently set zero point.
The upper larger line displays the scale's actual load (for instance 865 kg) and
the lower smaller line displays the spread rate per hectare (for instance 220
kg). Next to that small digits display the driving speed (for instance 10.8 km/h).
7.2 Zeroing
The [ZERO] button resets the indicator's zero point. Use this function for zeroing
the scale with an attached and raised implement. This puts the zero point on
the implement's empty weight after which a load's weight can be read directly.

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7.3 Standard weighing procedure
Load and unload the implement or use your implement as usual and the load's
actual weight will be displayed immediately on the weighing indicator. The
indicator is stabilized which allows you to read the weight while driving.
7.4 Weighing with tare function
The tare-function can be used to determine the amount of material which is
scattered to a part of a field:
Press the [TARE] button at the beginning. The indicator shows 0 and
displays the NET symbol.
Continue with your work on the display you see the net-weight. This is the
lost weight since the activation of the tare function.
If you want to see the total weight you can use the [SELECT] key to toggle
between the total weight and the net weight.
Read the net weight at the end of your partial area and return to the total
weight display with the [SELECT] key.
You can repeat this process as often as you like.
7.5 Switching off the weighing indicator
Keep the button on the far left pressed until the weighing indicator switches off.

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7.6 Settings for displaying the spread rate/ha
The following parameters are responsible for the weighing indicator's
functionality with regards to the spread rate:
SPREAD PULSES 10 Impulse/100m
SPREAD WIDTH 10 Spread width in m
SPREAD UPDATE 10 Interval in seconds
SPREAD RES 10 Resolution
SPREAD INPUT IO1 Sensor input
SPREAD MIN.DSP 50 Indicator minimum quantity
SPREAD PREC COUNTS Calculation method
The fi
The fiThe fi
The first two parameters have to be set by you.
rst two parameters have to be set by you.rst two parameters have to be set by you.
rst two parameters have to be set by you.
The other parameters have been pre-set in such a way that normal operation is
possible right away.
Proceed as follows to change other relevant settings:
Simultaneously keep the lower buttons on the far right (F3) and far left (the
small one) pressed for 3 seconds.
Wait until the word GEN.OPT appears on the display.
Press the [ZERO] button several times until SPREAD appears on the
display.
Press the [TARE] button. PULSES appears on the display.
Determine how many impulses the sensor sends per 100 m driven. Either
drive exactly 100 m count the amount of revolutions and multiply that with
the amount of mounted magnets. Or measure the wheel circumference and
manually calculate the amount.
When you use the adapter cable to the signal socket you normally have to
enter 406 impulses. According to standard the signal socket sends 13 000
impulses per 100 meter. The electronics in the adapter cable reduces this
by 1/32. In practice many signal sockets do not provide the signal
according to standard with values varying between 200 and 450. It's best
you enter 400 and synchronize the displayed driving speed with the
tractor's speedometer.

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To set the amount of impulses you enter the number with the numeric
keypad and confirm by pressing the [OK] button.
By pressing the [TARE] button the next parameter WIDTH appears.
Enter the working width in m with the numeric keypad and confirm by
pressing the [OK] button.
Press the [ZERO] button until it says END on the display.
By pressing the [TARE] button the settings are stored and the indicator
restarts.

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7.7 Calculating the spread rate
The quantity applied per hectare can be calculated in two different ways:
Automatic Mode
Automatic ModeAutomatic Mode
Automatic Mode
Automatic mode is already active when the weighing indicator is switched on.
The „A“ symbol appears in the top right of the display.
Press the [F3] button to switch from manual mode to automatic mode.
In automatic mode the weighing indicator calculates average weights for
consecutive intervals. An interval normally lasts 10 seconds and can be
adjusted through the SPREAD_UPDATE parameter (not recommended).
At the end of every interval the difference in weight between the interval's
average weight and the preceding interval's average weight is calculated.
This difference is then set off against the completed area (distance driven x
working width) per interval and is displayed as kg/ha.
Because automatic mode is always running you can continuously check the
quantity applied per hectare and the driving speed without having to operate
the indicator. The quantity applied in kg/ha is only displayed if it exceeds the
value in the SPREAD_MIN.DSP setting.
When you start applying the indicator is in the middle of an interval. Because of
this the first interval isn't complete and thus useless for calculating the spread
rate. If you press the [F3] button on the weighing indicator it will immediately
start a new interval. It is therefore recommended to press the [F3] button as
soon as you start the application process and have already reached the
desired driving speed.