Loadrite LR810 User manual

LR810
WEIGHING
SYSTEM
Operating
Manual

LR810
Distributed Worldwide by:
Loadrite Ltd
93 First Avenue
P.O. Box 13-115, Tauranga,
New Zealand
Facsimile: INTL-64-7-5776034
Phone: INTL-64-7-5782820

For: LOADRITE model LR 810
Software # 60042. Version: 3.20
Issue Date: December, 1996
Designed and Manufactured by:
A MEMBER OF THE LOADRITE GROUP OF COMPANIES
Actronic New Zealand Ltd reserves the right to make changes to the Loadrite range of products without prior notice
and assumes no liability in connection with the use of any Loadrite branded product.
© 1996, ACTRONIC NEW ZEALAND LTD
When re-ordering this manual, quote Doc number 80085-05.MAN

i
Contents
1 About This Manual.................................................................1
2 The Loadrite LR810 Weighing System................................2
Main Parts of the LR810 System.......................................................... 2
Weight Measurement............................................................................ 3
Displays ................................................................................................ 3
Indicator Lights..................................................................................... 4
Optical Trigger ..................................................................................... 4
3 Getting Started........................................................................5
Switching On........................................................................................ 5
Warming Up......................................................................................... 5
Weight Display Modes......................................................................... 5
Multiple Products ................................................................................. 6
4 Weighing - Overview..............................................................7
Before Weighing a Load....................................................................... 7
Weighing a Load .................................................................................. 7
Multiple Scales..................................................................................... 8
5 Total Mode...............................................................................9
Short Total............................................................................................ 9
Long Total .......................................................................................... 10
Clearing Totals for all Products.......................................................... 10
6 Target Mode..........................................................................11
7 Product Names......................................................................13
Identification/Tracking....................................................................... 13
One Product Only............................................................................... 13
Multiple Products ............................................................................... 13
8 Zeroing the LR810................................................................15
9 Automatic Zero Prompt.......................................................17
10 Adding, Subtracting and Recalling...................................18
Adding a Weight................................................................................. 18
Subtracting a Weight.......................................................................... 19
Recalling Last Weight ........................................................................ 21
11 Batch Weighing Mode........................................................22
12 Weighing with Tare............................................................23
13 Operating with Interlock...................................................25
14 Additional Data...................................................................26
15 Operator Menu Options.....................................................28
Menu Keys.......................................................................................... 28
Change Scale ...................................................................................... 28
Batch Mode On / Off.......................................................................... 29
Setting the Time and Date.................................................................. 29

ii
Clearing Long Totals.......................................................................... 30
Menu Map .......................................................................................... 32
16 Using the LD640 Data Logger...........................................33
Displays .............................................................................................. 33
17 Print Functions....................................................................34
18 Obtaining the Best Accuracy.............................................36
Lifting Speed ...................................................................................... 36
Trigger Point....................................................................................... 36
Bounce................................................................................................ 36
Centre of Gravity................................................................................ 36
Uneven Ground .................................................................................. 36
Temperature........................................................................................ 37
19 Span Calibration Correction.............................................38
20 Changing the Backup Battery...........................................40
21 Error Messages ...................................................................41
Lift Speed Changed? .......................................................................... 41
Bouncing Load ................................................................................... 41
Error Close to Tolerance Limit........................................................... 42
Trigger Fault....................................................................................... 42
22 Keys......................................................................................43
23 Specifications.......................................................................45
24 Output/Input Connections.................................................47
25 Index.....................................................................................49

1 About This Manual
1
1 About This Manual
This manual describes the day to day operation of the Loadrite LR810
weighing system.
Other Manuals
For information on ... See...
Installation of the system Installation Manual
Calibration of the system Setup and Calibration Manual
Printing weight data LP750 Data Printer Manual
Storing data LD640 Data Capture Manual
Parts list LR810 / LP750 Spare Parts Manual

2 The Loadrite LR810 Weighing System
2
2 The Loadrite LR810 Weighing System
The Loadrite LR810 weighing system measures the weight of loads lifted by
front end loaders, log loaders, fork lift trucks and similar machines which
use hydraulic rams to lift the load.
The heart of the system is the LR810 indicator which provides a keypad for
entering instructions and LCD screens to display readings and messages.
The indicator has internal memory which stores settings and production data
even when switched off.
The LR810 is installed in the cab of the loading machine and is connected to
sensors on the lifting arms.
Main Parts of the LR810 System
The main parts of the controller are shown in the diagram below.

2 The Loadrite LR810 Weighing System
3
Weight Measurement
The LR810 measures the hydraulic pressure in the lift cylinders as the
machine raises the load. The indicator converts pressure into a weight
reading and displays the value.
An electronic trigger device mounted on the lift arms ensures that the
pressure readings are always taken at the same position on every lift.
The weight of the bucket or forks and associated structures is zeroed out
when the system is calibrated so that only the weight of the payload is
displayed.
When a weight is displayed, the driver can add it to a total or use one of the
other functions described later in this manual.
Displays
The LR810 provides two displays.
The top display gives instructions and information to the operator, including
product names and weight data.
The bottom display shows the current weight as it is lifted, then shows the
total weight loaded or weight required to reach a target, depending on the
mode of operation currently selected.
Both displays on the LR810 can be backlit for ease of operation in low light
conditions.
>
>>
>To turn on or off the display lighting
•Press the LIGHT key.

2 The Loadrite LR810 Weighing System
4
Indicator Lights
The LR810 provides three indicator lights (positioned between the two
displays).
TRIG Light
This light comes on when the lifting arms have passed the trigger point.
This indicates that the displays now show the currently lifted weight.
Interlock Light (middle light
If the interlock feature is enabled, this light comes on when the bucket is in
the correct weighing position (not used with a standard LR810 installation).
TARE Light
This light is on when a tare has been entered. This means that the LR810 is
subtracting the tare weight from the lifted weight and is displaying the net
weight.
Optical Trigger
To ensure consistent and accurate measurement, the LR810 system
incorporates an optical trigger which initiates the weight measurement as the
lifting arms pass a certain point.

3 Getting Started
5
3 Getting Started
Switching On
The on / off switch is on the right hand side of the casing, just below the
rubber mounting bush.
On power up, the upper display shows a sequence of check messages and
then the Ready message (or Warm Up message - see below).
The lower display shows the total weight recorded when the LR810 was last
turned off.
Warming Up
For best weighing accuracy, the hydraulic fluid in the lift cylinders should be
at normal operating temperature.
If the machine has been standing idle or used only occasionally during the
last 30 minutes, the empty bucket should be lifted a few times. A zero
check should be performed before weighing.
You can ignore the readings on the weight displays as you warm up the
machine.
Initial Warm up Message
If your LR810 has been set up to display an initial warm up message and has
been off for two hours or more, it prompts you to warm up the machine
before starting weighing.
You need to do three lifts before the display shows Check -00-.
Refer to section 8 on how to zero the LR810.
Weight Display Modes
The LR810 provides two modes for displaying weight data:
•Total mode
•Target mode.

3 Getting Started
6
In total mode the LR810 displays each weight lifted and the running total as
you add weights.
In target mode the LR810 displays each weight lifted and the amount to go
to reach a specified target.
Details of total mode and target mode are given on pages 9 and 11
respectively.
Multiple Products
The LR810 allows you to weigh and store totals for up to sixteen different
products. The selected number of products are enabled when the LR810 is
installed.
The top display shows the name (number) of the currently selected product.
If your LR810 is set up for one product only, the display simply shows Total
instead of a product name.
Further information about product names is given on page 13.

4 Weighing - Overview
7
4 Weighing - Overview
When ready to weigh, the LR810 displays Ready on the top display.
There may be other information on the top display, depending on the mode
of operation.
The total (or target) weight is shown on the second line of the top display
and on the large bottom display.
Before Weighing a Load
Before weighing, make sure that:
•The bucket or forks are rolled fully back for each lift.
•The loader is on level ground.
•The loader is stationary (for best accuracy).
•The lift arms start well below the trigger point. This ensures that all
aceleration and load bounce has been eliminated well before the
trigger sequence begins.
•The LR810 is correctly zeroed.
Weighing a Load
>
>>
>To weigh a load
Raise the load smoothly through the trigger point, using normal engine revs.
For best results, operate the lift lever before accelerating the engine so that
the machine does not rock as it lifts.
As you raise the load past the trigger point, the LR810 beeps and the TRIG
light comes on to show that the weight has been measured.
The lifted weight is briefly displayed on the top line of the top display and
on the bottom (large number) display.
In the diagram above, the lifted weight is 2200kg and the total so far is
5600kg.
While the TRIG light remains on (few seconds), you can:
•Press ADD, to add the displayed weight to the running totals.
•Press SUB, to reduce the running totals by the displayed weight.
•Press ZERO to zero the measuring system.

4 Weighing - Overview
8
These functions are described seperately in this manual.
If you don’t press a key, the LR810 beeps and prompts you to take action. If
after a further delay, you do not press a key, the LR810 discards the just
measured weight and goes back to the Ready state.
Multiple Scales
If the multiple scale option is enabled in your LR810, you can measure
weights using Scale 1 or Scale 2.
Scale 1 and Scale 2 allow two different load bearing implements to be used
for lifting. For example, two different types of bucket/fork attachments.
The scale currently in use is displayed on the top line of the display.
To change the scale, see page 28.

5 Total Mode
9
5 Total Mode
In total mode the LR810 displays each weight lifted and the running total as
you add weights.
Total mode provides two running totals for each product:
•Short total
•Long total
•
When a load is added, both the short and long totals are updated.
The short and long totals are independent and are individually cleared and
restarted as necessary.
Selecting Total Mode
The LR810 starts up in Total mode when switched on.
You can return to total mode from Target mode by pressing TOTAL.
Short Total
The short total is typically used to display the total weight lifted onto a
truck.
As you add successive loads, the LR810 displays the weight of the current
load and the updated short total (sum of the loads so far).
The LR810 displays short totals on the second line of the top display and on
the lower (large) display.
>
>>
>To clear the short total
Press CLEAR.
The indicator clears the short total for the current product and then displays
the following message.
The next ADD operation starts a new short total for this product.

5 Total Mode
10
Long Total
The long total is typically used for accumulating the weights lifted over a
longer period; for example a shift or a day.
>
>>
>To display the long total
•Press LONG.
The long total is displayed while the LONG key is held down and for
3 seconds after it is released.
>
>>
>To clear the long total
1. While the long total is displayed, press ENT.
The LR810 prompts you to confirm:
2. To clear, press ENT.
The indicator clears the long total for the current product and then
displays the following message.
(In this example, the long total for product number 1 was cleared.)
The next ADD operation starts a new long total for the current
product.
Clearing Totals for all Products
To clear the short totals for all products, you need to select each product in
turn and clear the short total as described above.
You can clear the long totals in the same way, or use the MENU option
Clear All Long. See page 30.
Multiple products are described on page 13.

6 Target Mode
11
6 Target Mode
Target mode allows you to enter a target weight and then load up to that
weight in a series of lifts.
Each time you lift and add a weight, the LR810 displays the remaining
amount to reach the target.
Target mode is used typically when loading a truck to its optimum payload.
Target mode is an optional feature which can be enabled when the LR810 is
installed.
>
>>
>To select target mode and enter the target weight
1. Make sure the LR810 is Ready and you have finished (cleared) the last
target operation.
2. Press TARG.
The indicator prompts you to enter a new target weight.
3. Enter the new target using the number keys 0 to 9, or simply press
ENT to select the displayed target weight again.
You can use the CLEAR ENTRY key to correct any errors made while
entering the number.
The indicator displays the amount “To Load” to reach the target and
goes to the Ready state.
>
>>
>To reset to the target weight
When you have completed a load, you need to clear the “To Load” amount
for the current product before starting another target operation.
1. Press CLEAR.
The LR810 resets to the last entered target weight and resets the short
total for the current product to zero.

6 Target Mode
12
2. The LR810 returns to the Ready state with the new “To Load” amount
displayed.
At this stage you can press TARG to enter a new target weight or continue
weighing with the current target weight.
Target Mode Notes
•If you have lifted and added any weights, you must clear the totals
before you can reset or change the target weight.
•During a target weight operation, you can check the amount added so
far by pressing TOTAL to switch to total mode. You can then return
to target mode by pressing TARG.
•During a target weight session, you can review the target weight and
the weight still to go by pressing and holding down TARG.
•If the total of the weights added exceeds the target by a certain
percentage, the LR810 beeps and displays a negative weight to load.
You can still add the weight to the totals in the normal way.

7 Product Names
13
7 Product Names
Identification/Tracking
The LR810 allows you to weigh and store separate short and long totals for
up to sixteen different products.
The number of products and names for them can be entered when the LR810
is installed.
When used with an LD640 data logger, the LR810 can track up to 999
different products, but these can only be identified by number.
One Product Only
If your LR810 is set up for one product only, the display simply shows Total
instead of a product name.
Multiple Products
If your LR810 is set up for multiple products, the display shows the name of
the currently selected product.
The LR810 maintains a separate short and long total for each product. The
ADD and SUB functions only affect the totals for the current product.

7 Product Names
14
>
>>
>To select a different product
1. Press PROD.
2. Enter the number or press ≤or to display the product required.
3. When the required product is displayed, press ENT.
The LR810 displays the product name corresponding to the number
you entered and is ready to weigh.
Notes
•If you do not select a new product within a few seconds, the LR810
reverts to the original product.
•You can select a different product in the middle of a total or target
operation and return to the original at any time without losing the data.