Pacific Northwest Technologies Accuweigh PNT9700 User manual

1
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battery-charging, or welding on the truck
ON-BOARD WEIGHING SYSTEMS
PNT9700 User’s Manual
Installation Calibration Operation
(Version 4.00)
Pacific Northwest Technologies
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Do not use pencils or other sharp-pointed objects to press the meter’s keys.

3
Unplug the connector from the back of the meter before jump-starting,
battery-charging, or welding on the truck
ON-BOARD WEIGHING SYSTEMS
Contents
Chapter 1 Introduction................................................... 7
Chapter 2 Meter Setup................................................... 9
Starting the Meter Setup.........................................................9
Setting the Load Units...........................................................10
Setting the Grad Size............................................................11
Setting For Net Or Gross....................................................... 12
Chapter 3 Calibration ....................................................13
Entering the Empty Weight.................................................... 14
Entering the Loaded Weight ..................................................17
Advanced Calibration ............................................................20
Chapter 4 Operating the Meter ......................................23
Selecting the Weight-display Channel..................................... 23
Selecting the Auto-cycle Function........................................... 23
Changing the Auto-cycle Speed..............................................24
Recalling the Tare Weight .....................................................25
Recording the Cal Factor.......................................................26
Chapter 5 Troubleshooting............................................31
Chapter 6 Test Mode ....................................................37
Recording Test Numbers.......................................................38
Chapter 7 Installation....................................................41
Installing the Meter...............................................................41
Mounting the Transmitters ....................................................42
Routing the Signal cables......................................................42
Routing the Power Cable.......................................................43
Connecting the Cables ..........................................................43
Final Step ............................................................................44
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Chapter 8 Maintenance .................................................45
Daily Inspections...................................................................45
Weekly Inspections...............................................................45
Chapter 9 Special Operations.........................................47
Entering the Weight-to-go Limits............................................47
Setting For Weight-to-go .......................................................51
Setting the Transmitter Model................................................52
Chapter 10 Using Multiple Trailers ...................................55
Enabling the 2-channel ID Number.........................................55
Set 2-channel ID Number ......................................................56

5
Unplug the connector from the back of the meter before jump-starting,
battery-charging, or welding on the truck
ON-BOARD WEIGHING SYSTEMS
The PNT 9700 AccuWeigh digital on-board weighing system consists of
a digital meter, load cells, transmitters, and cables designed for logging
trucks. The meter is optimized to be used with PNTechnologies trans-
mitters and cables but will also function with other equipment.
Benefits of using the PNT 9700 include:
 Flexibility to read individual axle weights
 A reliable two-wire hookup between the transmitters and the meter
 An extremely bright weight display, visible even in bright sunlight
 Ability to calibrate the meter without having to have the truck load-
ed
 A unique load-hold feature, useful when loading at several different
sites
 Measurements in increments of 10, 20, 50, or 100 pounds or kilo-
grams
 Internal software that can be updated to include the latest en-
hancements.
A modern on-board weighing systems consists of load cells to sense the
load’s weight, transmitters and cables to send the load-cell output to
the meter, and a meter to change the signals into information usable
by the operator.
Load cells are precision-machined high-strength steel beams with
strain gages bonded inside. The load cell is installed on the truck be-
tween the log load and the truck frame. When the logs are loaded on
the truck, the strain gages sense the weight of the logs and send a
small electrical signal to the meter by way of the transmitter.
The transmitter provides the voltage to the load cell to power the
strain gages. A signal voltage from the load cell is returned to the
transmitter where it is converted to a digital signal before being sent to
the PN9700 meter through the two-wire cable.
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Do not use pencils or other sharp-pointed objects to press the meter’s keys.
The PNT 9700 meter receives the digital signal from the transmitter
and interprets and displays it as a weight in pounds or kilograms.
Two displays are used on the front of the meter. The top LED display
shows the weight of the load and can easily be switched between
truck, trailer, or total weight. The lower dot-matrix information dis-
play complements the top display by showing the two non-displayed
weights. For example, if the top LED display is set to show the truck
weight, the upper line of the information display will show the trailer
weight and the total weight.
When the meter is in either the calibration or setup modes, the upper
line of the information display will show a calibration or setup mes-
sage. The lower line will show the appropriate legend for the blue
“soft” keys, F1 through F5. The function of each of these keys
changes depending on the mode that the PNT 9700 is in. The labels
will change as various menus are selected during calibration or setup.
During normal operation, the keys will select:
CH-1 [F1] Channel 1 or truck weight
CH-2 [F2] Channel 2 or trailer weight
TOT [F3] Total weight
AUTO [F4] Autocycle between Ch 1, Ch 2, and Total

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Unplug the connector from the back of the meter before jump-starting,
battery-charging, or welding on the truck
CHAPTER 1 INTRODUCTION
The PNT 9700 meter has two menus used for setup and calibration,
the FUNCTION MENU and the SETUP MENU.
The FUNCTION MENU is used to:
 reset the empty weight
 select a gross or net weight mode
 select the preferred speed for the auto-cycle mode
 enable or disable the load-hold feature
 determine load-cell test numbers
 recall the tare weight
 record the test numbers
 enable the meter for weight-to-go feature
The SETUP MENU is used to:
 calibrate channel 1 or 2
 enable the advanced calibration feature
 select the different weight increments, commonly called
the grad size
 select the proper weight unit, such as pounds or kilograms
 record the cal factor
 enter the weight-to-go limits
The ADVANCED SETUP MENU is used to:
 enter the transmitter model
 set the meter for multiple trailers
The following chapters guide you through the setup and calibration of
the meter. If a key on the right-hand side of the meter needs to be
pressed, a small drawing of the key will be shown, like this:.
Messages displayed in the upper line of
the information display will be shown in
the format as they would be seen in the
window and will be shown on the right-
hand side of the page, like the example
to the right of this paragraph.
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Do not use pencils or other sharp-pointed objects to press the meter’s keys.
The labels for the five blue soft keys along the bottom of the
meter will be shown similarly in the bottom line of the
information display, immediately above the key, like the
example to the right of this paragraph.
INTRODUCTION

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Unplug the connector from the back of the meter before jump-starting,
battery-charging, or welding on the truck
CHAPTER 2 METER SETUP
INTRODUCTION
This chapter will guide you through the meter setup prior to doing the
calibration. Questions to ask yourself are:
1. Will you want the weight display to show in pounds (lbs) or
kilograms (kgs)?
2. Do you want the weight shown in 10, 20, 50, or 100 lbs or kgs
increments (grad size)? Selecting 10 or 20 will give better
resolution but the display will appear unstable because the numbers
will fluctuate more frequently when the truck slightly moves. A grad
size of 50 is a good all-around selection.
3. Should the weights be shown as gross weight or net weight? Most
operators want the display to show gross weight so they can see the
same weight that any roadside platform scale or mill scale would
see.
STARTING THE METER SETUP
Turn on the meter by firmly pressing the key. The information
display will first show POWER ON and then show the meter model and
the software version. During this time, the meter is also performing an
internal self test which includes briefly lighting all of the small red
indicator lights. If the information display shows any error messages,
refer to Chapter 5,
Troubleshooting.
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Do not use pencils or other sharp-pointed objects to press the meter’s keys.
SETTING THE LOAD UNITS (LB OR KG)
It is important to see if the meter is displaying weights in kilograms
(kg) or pounds (lb). Look at which of the small red LED lamps is on at
the right of the weight display, next to the lb or kg label. If not
correct, do the following:
1. Press the key for 5 seconds until
the information display shows
After releasing the key, the
information display will show
2. Press the or key to
select the UNITS menu.
3. Press the or key to select the desired unit.
4. Press the key to store the change.
5. When finished, press the key to exit the SETUP MENU.
METER SETUP

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Unplug the connector from the back of the meter before jump-starting,
battery-charging, or welding on the truck
SETTING THE GRAD SIZE
The grad size, or graduation, allows the meter to display the load
weight in either 10, 20, 50, or 100 lb or kg increments.
1. Press the key for 5 seconds until
the information display shows
After releasing the key, the
information display will show
2. Press the or key to select
the GRAD SIZE menu.
3. If no change is desired, press the key.
4. If you want to change the grad size, press the key,
followed by the key.
5. Press the or key to select a grad size: 10, 20, 50, or 100.
6. Press the key to store the change. Press the key to
exit the SETUP MENU.
METER SETUP 12
Do not use pencils or other sharp-pointed objects to press the meter’s keys.
SETTING FOR NET OR GROSS
The NET weight refers to the weight of the load; it does not include
the weight of the truck and/or trailer. GROSS weight, however, refers
to the weight of both the load and the truck/trailer combination. Look
at which of the small red LED lamps is on at the left of the weight
display, next to the NET or GROSS label. If not correct, do following:
1. Press the key to get the
If you do not continue with the operation within 15 seconds, the
meter will reset to the normal weighing mode and you will need to
press the key again.
2. The information display will show
3. Press the key again to show
4. Press the key to select GROSS WEIGHT. The red
GROSSLED lamp will turn on.
5. Press the key to select NET WEIGHT. The red NET
LED lamp will turn on.
6. Press the key to exit the SETUP MENU.
METER SETUP

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Unplug the connector from the back of the meter before jump-starting,
battery-charging, or welding on the truck
CHAPTER 3 CALIBRATION
INTRODUCTION
The calibration process allows you to fine tune your weighing system to
provide the greatest degree of accuracy. The accuracy of the PNT
9700 AccuWeigh, however, depends on the accuracy of the information
you provide. You will be required to have the weights of your truck
and trailer when they are empty (tare weight) and when they are
loaded (gross weight).
Find a certified platform scale of known accuracy, such as a state-
operated weight-enforcement highway scale or a mill scale. Have your
empty log truck and trailer weighed with the trailer down. Get the
truck weight (including the steer axle and the drive axles) and the
trailer weight. For future reference, record the weights here:
Truck (steer and drive axles): __________________ LB KG
Trailer (trailer axles): __________________ LB KG
Total weight: __________________ LB K G
Not all platform scales read the same, so try to use the same scales
whenever you need to recalibrate the meter or check the calibration.
Use the same scales for recording loaded weights that you used for
getting your empty weights.
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Do not use pencils or other sharp-pointed objects to press the meter’s keys.
ENTERING THE EMPTY WEIGHT INTO THE METER
Before entering the empty weights into the meter, make sure the
meter display is set to GROSS (refer to Chapter 1,
Setting For Net Or
Gross Weight)
. Also, make sure the truck and trailer are empty and
the trailer is on the ground with the meter cable connected.
1. Press the key for 5 seconds
until the information display shows
2. After releasing the key, the
information display will show
and the weight display will show
3. To enter the truck empty weight,
press the or key until
the information display shows
4. Press the key.
The information display will briefly
(for about 4 seconds) show
It will then show
CALIBRATION

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battery-charging, or welding on the truck
5. The last number of the weight display will be flashing, telling you
that number is ready to be changed.
To change the number’s value, press the or key.
To select a different number, press the or key.
6. When the number on the weight display matches your truck
(channel 1) empty weight, press the key to store the
weight in the meter’s memory.
The information display will briefly show
and then return to
and the weight display will show
7. To enter the trailer empty weight,
press the or key until
the information display shows
8. Press the key. The information
display will briefly show
CALIBRATION 16
Do not use pencils or other sharp-pointed objects to press the meter’s keys.
It will then show
9. The last number of the weight display will be flashing, telling you
that number is ready to be changed.
To change the number’s value, press the or key.
To select a different number, press the or key.
10. When the number on the weight display matches your trailer
(channel 2) empty weight, press the key to store the
weight in the meter’s memory.
The information display will show
then return to
11. At any time, you can exit the calibration process by pressing
the key.
The information display will briefly show
CALIBRATION

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Unplug the connector from the back of the meter before jump-starting,
battery-charging, or welding on the truck
ENTERING THE LOADED WEIGHT INTO THE METER
The following steps can be completed only after having your loaded
truck weighed at a certified and accurate platform scale. The accuracy
of your meter will completely depend upon the accuracy of the platform
scale. For best results, use the same scales you used for getting your
empty weights.
The steps involved are similar to those used for entering the empty
weights.
1. Press the key for 5 seconds
until the information display shows
2. After releasing the key, the
information display will show
and the weight display will show
3. To enter the truck’s loaded weight,
press the or key until
the information display shows
4. Press the key. The information
display will briefly show
It will then show
CALIBRATION 18
Do not use pencils or other sharp-pointed objects to press the meter’s keys.
5. The last number of the weight display will be flashing, telling you
that number is ready to be changed.
To change the number’s value, press the or key.
To select a different number, press the or key.
6. When the number on the weight display matches your truck
(channel 1) loaded weight, press the key to store the
weight in the meter’s memory.
The information display will briefly show
and then return to
and the weight display will show
7. To enter the trailer’s loaded weight,
press the or key until
the information display shows
8. Press the key.
The information display will briefly show
CALIBRATION

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Unplug the connector from the back of the meter before jump-starting,
battery-charging, or welding on the truck
It will then show
9. The last number of the weight display will be flashing, telling you
that number is ready to be changed.
To change the number’s value, press the or key.
To select a different number, press the or key.
10.When the number on the weight display matches your trailer’s
(channel 2) loaded weight, press the key to store the
weight in the meter’s memory.
The information display will show
then return to
11. At any time, you can exit the calibration process by pressing
the key.
The information display will briefly show
CALIBRATION 20
Do not use pencils or other sharp-pointed objects to press the meter’s keys.
ADVANCED CALIBRATION
Another way to enter the loaded weight into the meter is with the
advanced calibration feature. This method allows the calibration of
several trucks to be centrally controlled. The driver does not have to
enter the setup mode of the meter, even for calibration. After setting
in the tare weight, the driver need only record two sets of numbers:
1. the truck and trailer loaded weight shown by the platform
scale, and
2. the channel 1 and channel 2 weights recorded on the
PNT9700 while the truck is on the platform scale.
The following steps are used for the advanced calibration, which can
be done on an empty truck, if necessary.
1. Press the key for 5 seconds
until the information display shows
After releasing the key, the
information display will show
and the weight display will show
2. Press the or key until
the information display shows
3. Select the channel to calibrate by pressing
the key or the key.
For this example, we will assume
you selected
CALIBRATION