Electric pallet truck weighing systems based on hydraulic pressure transducer. World's best selling retrofit weighing systems for electric pallet trucks

1. Installation & Calibration
ED2-EPT SkidWeigh System
Electric Pallet Truck On-board Weighing Systems
ED2-EPT V2
Integrated Visual Data Technology Inc. 3439 Whilabout Terrace, Oakville, Ontario, Canada L6L 0A7
www.skidweight.com

2. General Installation Guide
This ED2-EPT SkidWeigh system installation & calibration guide describes how to install, calibrate, test and use your onboard check weighing unit. Following the instructions in this guide will enable you to get your system operating quickly
and easily. In the event that you require additional assistance, please contact customer support via e-mail to
support@skidweigh.com , visit www.skidweight.co or contact us at the address or contact number below:
Integrated Visual Data Technology Inc.
3439 Whilabout Terrace, Oakville, ON, Canada, L6L 0A7
Phone: 905-469-0985
Safety
Always disconnect the vehicle battery while installing SkidWeigh system or any other electronic product.
Make sure sure that unit, pressure transducer and any other associated cables are securely mounted and do not impede
any of the vehicle’s controls. Use care when routing the components cables. Route the cables where they will be
protected. Use commonly accepted install practices for after market industrial vehicle electronic devices.
The installation of the SkidWeigh systems should only be performed by an acknowledged lift truck dealer technician or
end user electro and hydraulic technical installer.
Here are two acceptable methods of making a wire connections:
* Soldering your connections (recommended)
* Crimp connectors ( with the use of the proper crimping tool)
Regardless of the method you choose, ensure that the connection is mechanically sound and properly insulated. Use
high quality electrical tape and shrink tubing where necessary.
This product is connected directly to the vehicle’s ignition switch, operating voltage from 12 to 55 V DC.
Electro-Magnetic Compatibility
CE conformity to EC directive 89/336 (EMC) by application of harmonized standards: Interference stability EN 61000-6-2
and EN 61326-1 interference emit EN 61000-6-3, EN 61326-1 for the pressure transducer.
ED2-EPT SkidWeigh Series
Our policy is one of continuous improvement and the information in this document is subject to change without notice.
Check that software version displayed on LED is the one applicable for your application.
Overview of components
The standard ED2-EPT SkidWeigh Series check weighing system consist of two main components:
* Digital indicator with wiring harness, mounting bracket and anti-vibration mount
* Hydraulic pressure transducer with 3 wires cable
* Installation & Calibration manual and operator usage instruction
Integrated Visual Data Technology Inc. 3439 Whilabout Terrace, Oakville, Ontario, Canada L6L 0A7
www.skidweight.com

3. Operational principal
The ED2-EPT SkidWeigh system operational principal is based on the
hydraulic pressure transducer mounted in the vehicle lifting hydraulic circuit.
The increase in the hydraulic pressure will activate the specific “weighing cycle”
algorithm and initiate automatic control motion of the hydraulic lift cylinder. The
microprocessor will take a readout only of of the predetermined valid signals at
the sample rate of 16000 readings per measurement session and will convert it
to the load weight that will be shown on LED display.
Pressure transducer installation
The pressure transducer must be installed in the lifting hydraulic line between the lift control valve and lift
cylinder. Mount a T-piece in hydraulic line.
Operation of the lift motor during the load weighing cycle
Use two wires (Green and Blue ) from digital indicator seven wires cable and “splice” them in the wire connected to relay
control circuit activating the llift motor or to the operator activated switch that controls the lift motor when raising the lift
cylinder. Green and Blue wires are connected to “SkidWeigh control PC board”. Make sure that you do not
exceed maximum of 2A.
Note: The motion of the lifting cylinder and the load weight measurement “weighing cycle” will be initiated and controlled
automatically. Once the load weight is shown on the LED display system will be reset.
Pressure transducer installation precautions
Before installation of the pressure transducer the hydraulic lift circuit must be pressure free.
1. Place the forks on the ground in their lowest position and make the hydraulic system pressure free.
2. Make sure that that installed pressure transducer will not touch any moving parts or assembly of the vehicle while in
normal operation. Pressure transducer has 1/4”-18 NPT male thread. Use thread seal to ensure tight fit.
Integrated Visual Data Technology Inc. 3439 Whilabout Terrace, Oakville, Ontario, Canada L6L 0A7
www.skidweight.com

4. Selecting the mounting location for digital indicator
Use the mounting bracket with the anti vibration mount and fasten digital indicator
on the vehicle dashboard, load backrest or any other convenient place on the
electric pallet truck body There are many examples of mounting locations that will
depend on the vehicle model. However, additional mounting items such as a flat
brackets may be needed to help secure the unit.
Compact size
All of the SkidWeigh digital indicators housing dimension are only 120 x 80 x 55 mm.
Electrical Connections (Seven wires cable)
All SkidWeigh systems operate from 12 to 55 V DC.
- Orange Wire (+) Ignition switch On position
- Brown Wire (-) Battery negative
- Red Wire, connect to RED wire of the pressure transducer cable
- Black Wire, connect to BLACK wire of the pressure transducer cable
- White Wire, connect to WHITE wire of the pressure transducer cable
Blue and Green wires from the main cable
(Splice BLUE and GREEN wire in series with with operator switch that controls lift
motor function when lifting the hydraulic cylinder)
Connection of the both wires can be done on the vehicle electronic controller module as well.
Consult vehicle wiring diagram !
Operator Activated
Lift Motor Control
Switch
Transducer cable
(Pressure transducer cable must be connected to the digital indicator main cable)
- White Wire, signal output 0 to 2,5 V DC
- Black Wire, signal negative
- Red Wire, power supply to pressure transducer + 11 V DC
Integrated Visual Data Technology Inc. 3439 Whilabout Terrace, Oakville, Ontario, Canada L6L 0A7
www.skidweight.com

5. Electrical power short circuit protection
- All of the SkidWeigh systems are internally short circuit protected with
resettable fuse. There is no need to install external inline fuse in orange wire
connected to the ignition switch.
- Automotive 60 V load dump protection
- Reversal power supply protection
-Note: Any external devices connected to the SkidWeigh system, such as
non standard onboard printer might require external fuse.
“Quick test to determine if electrical connections are done right”
Note: SkidWeigh weighing calibration function is not done yet at this stage. This procedure is only to test if electrical
connections of the system installation into the vehicle is done properly!
After you have connected electrical power and pressure transducer cable you can “quickly” check the system operation.
- Turn on the power switch ( Ignition sw.)
- Activate main power switch located on top of the housing
- Lower the forks to the ground
- Digital LED display will be activated, showing software version
- Number 8 will be shown on LED display above the Mode sign.
- Lift the forks with some load just above the ground. Mode 8 will go off, lift motor will stop and some load weight will be
shown on LED display. When LED display shows the load weight the contact in SkidWeigh unit will close and lift motor
circuit will be operational.
If the above test is valid than the system electrical connections are done right. The next procedure will be to calibrate
the SkidWeigh weighing function and perhaps set the right time and date if current value is wrong.
Weighing function calibration procedure
The ED2-EPT SkidWeigh calibration is automatic and is done by lifting empty and loaded forks to initiate
automatic weighing cycle.. MAKE SURE THAT YOU HAVE A KNOWN LOAD WEIGHT AND KEEP IT NEARBY TO
COMPLETE THE SYSTEM WEIGHT FUNCTION CALIBRATION.
For the best results use at least minimum calibration load test weight of 50% to 80% of maximum lifting capacity of the
electric pallet truck. Use customer floor scale or find a known skid load weight within the operational facility.
Important: If you want the system to show load weight in pounds, use the known load weight in pounds and enter that
value accordingly. The same would apply if you want the system to show load weight in kilograms. Use the known load
weight in kilograms and enter that value into the system accordingly.
Integrated Visual Data Technology Inc. 3439 Whilabout Terrace, Oakville, Ontario, Canada L6L 0A7
www.skidweight.com

6. Calibration starting point
Lower the empty forks to the ground. There should be no hydraulic pressure in lift hydraulic circuit.
- Turn ignition switch to on position . If the LED display does not show any number(s), turn on the main power switch
located on top of the housing.
- LED display will show software version on the right side and number 8 will be shown in Mode window.
Calibration of empty forks lifted just above the ground
- With lowered empty forks on the ground the Mode 8 will be shown on LED display.
To initiate calibration press the “M” button (use a paper clip) and hold it down for approx. 5 seconds.
M Button
After 5 seconds the Mode 8 digit will change to Mode 0.
System is ready for automatic zeroing of the scale function
Lift the empty forks to initiate automatic “weighing cycle”.
Lift cylinder will stop, LED display will go blank and will show “0” value in furthest right digit display.
The ED2-EPT automatic zero weight function is finished
Calibration of loaded forks lifted just above the ground
At this point drive your vehicle into the skid load with your known load calibration weight.
- Lower the loaded forks to the ground.
(In our example the known load weight is 4000 pounds)
Integrated Visual Data Technology Inc. 3439 Whilabout Terrace, Oakville, Ontario, Canada L6L 0A7
www.skidweight.com

7. - Start entering a known load weight into digital indicator by using arrow up button (increments from 0 to 9) with wrap
around function. Start with least significant digit of your known load weight.
- Use the “M” button to increment to next digit on the LED display
First least
Second least
Third least
Forth least
significant digit “0”
significant digit “0”
significant digit “0”
Must enter “0”
significant digit “4”
- Repeat this procedure until the Mode digit display is showing number 4.
Caution: Since in our example of 4000 pounds known load weight value has only four digits make sure that the 5th
digit has “0” value entered into the calibration system.
- With loaded forks still on the ground press “M” button to advance to Mode 6.
- When indicator is showing Mode 8, lift loaded forks to initiate “weighing cycle”. Lift cylinder will stop, LED display will
go blank and within few seconds will show calibrated known load weight of 4000.
The ED2-EPT system weighing calibration function is finished
If you lower the loaded forks to the ground the Mode 8 digit will be shown on LED display
ED2-XEPT System
Ready For Use
Integrated Visual Data Technology Inc. 3439 Whilabout Terrace, Oakville, Ontario, Canada L6L 0A7
www.skidweight.com

8. Lift Truck Operator Proper Weighing Procedure
The Mode 8 shown on LED display is always your starting point to initiate a weighing cycle
Weighing Palletized Loads
- When power to the vehicle is turned on the LED display should show Software version.
(Example: Software version 30075).
If nothing is shown on LED display, turn on the main power switch to the system which is
located on top of the digital indicator.
- Insert the forks into the pallet or under the product to be weighed.
- Lower the forks to the ground.
- LED display must show Mode 8 to initiate the “weighing cycle”.
- Activate lift control switch to lift loaded forks.
- The “weighing cycle” will be initiated automatically, lift cylinder will stop.
Integrated Visual Data Technology Inc. 3439 Whilabout Terrace, Oakville, Ontario, Canada L6L 0A7
www.skidweight.com

9. - LED display will go blank for the moment and within few seconds load weight will be displayed.
- Lift cylinder will be operational once the load weight is shown on the LED display.
Load Weight Total + Print Tickets
- ED2-EPT SkidWeigh Series with load weight function will have additional two buttons on top of
the housing
- Black button to be pressed to accumulate loads (LED display must show a current load weight
in order to add the load weight) in accumulative load weight total counter)
- Red button to be pressed to reset current or accumulative total load weight and initiate printer.
Note1: This load weight will be shown on LED display until next time the forks are lowered to ground.
Note 2: When vehicle in motion the LED might show some random load weight. This is due to the hydraulic spikes
and this does not represents any actual load weight value. To initiate the “weighing cycle” you must lower the
loaded forks to the ground. Once the Mode 8 is shown, lift loaded forks just above the ground to obtain a load
weight.
Note 3: During the normal operation if you do not want to use the weighing function, turn off the main power
switch located on the top of the housing. LED display will not show anything and you can operate your
electric pallet truck without weighing cycle and without lift cylinder being stopped.
Integrated Visual Data Technology Inc. 3439 Whilabout Terrace, Oakville, Ontario, Canada L6L 0A7
www.skidweight.com