ED2-EPT Series
SkidWeigh System
Automatic Check Weighing for Electric Pallet Trucks
Operating Instructions
Mounting Location
Electrical Connections
Pressure Transducer Installation
Calibration Instructions
Special Features
Accumulative Weight Loads Function
Accumulative Weight Loads Function with Onboard Printer
Mode Description
Weighing Loads
Troubleshooting
User’s Manual
Ver.0510-3- Software 2SD-1600
The ED2-EPT Series is automatic electric pallet truck check weighing system used to verify load
weights on the move. This is not a “Legal for Trade” scale, but an economical on-board check
weighing system that will allow your lift truck operator to increase vehicle utilization, increase
productivity and provide the load weight readout within +/-1 to 3% of the vehicle’s lifting capacity.
Proper Operator Procedure for Weighing Loads
To obtain load weight readout the indicator must show number 8 in the MODE display.
Insert the forks into the pallet or under the product to be weighed. Make sure that the pallet is
positioned all the way on the fork’s carriage. The number 8 in the MODE display must be shown
before you initiate a “Load Weighing Cycle”.
Activate lift control valve and start lifting the load. Do not stop the lifting cycle until the load
weight is shown on the indicator.
This load weight value will be displayed on the indicator and stay until the next time the forks are
being lowered.
Mounting Location for Digital Indicator
The majority of electric pallet trucks have only a limited space to add any accessories. Install the
mounting bracket with the anti-vibration mount and fasten the digital indicator on the vehicle’s
dashboard. Do not install indicator on removable cover that allows the access for service to the
electric control compartment.
Anti-vibration mount, ¼”-20 UNC (25 x 20 mm, vulcanized rubber, Duro5) supplied with every kit
Pressure Transducer Installation
1. The pressure transducer body itself has a male port ¼”-18 NPT. Standard cable length is
6’ (1.5 meters).
2. The pressure transducer must be installed in the hydraulic line between the lift control
valve and the lift cylinder.
3. The majority of pressure transducer installations into the vehicle hydraulic system will
8
require some kind of T- piece to be connected in the hydraulic line. Hydraulic hose size
#10 is very common for this type of vehicles.
4. Make sure that the installed pressure transducer will not touch any moving parts or the
assembly of the forklift when the vehicle is in normal operation.
Electrical connections
(
Vehicle Voltage from 12 to 55V DC
)
1. Power Connection
ORANGE Wire (+) Connect to ignition switch “ON” position
BROWN Wire (-) Connect to battery negative (Electric motor powered vehicle)
Optional: BLUE and GREEN Wires: Connection to external audio / visual warning devices if
applicable
2. Pressure Transducer
RED WIRE of pressure transducer cable to RED WIRE of the seven wires cable from the
indicator
BLACK WIRE of pressure transducer cable to BLACK WIRE of the seven wires cable from the
indicator
WHITE WIRE of pressure transducer cable to WHITE WIRE of the seven wires cable from the
indicator
Digital Indicator Calibration/ Setup Keys Description
Upper Right Key Labeled “M” (Calibration / MODE key)
Lower Right Key Labeled “⇑⇑⇑⇑” (0 – 9 numerical increments input key)
MODE Five Digits Load Weight Readout Display
Digit 5
Digit 4
Digit3
Digit 2
Digit 1
Note: Both keys, M and ⇑⇑⇑⇑ are used only during the system calibration/set up mode. They can be
accessed through two small holes on the polycarbonate cover. (Use a paper clip to activate the
keys)
• The left most significant digit represents the MODE of operation
• The five other digits represent the load weight readout
8
Calibration / Setup Procedures Concept
The ED2-EPT Series SkidWeigh systems calibration/setup procedures are very simple and
consist of a two steps to complete the automatic calibration of the empty forks and loaded forks
with known load weight being lifted.
Note: At any point if you make a mistake, for whatever reason, turn the power to the system “off”
and start all over. All calibration values will be automatically stored after the calibration/setup
procedure is finished.
• The ED2-EPT system has to be calibrated with a known load weight
• Use the customer’s floor scale or find a known load weight within the operating facility
• Keep that known load weight nearby to complete the calibration
• For best results, use at least 30% to 50 % known load weights of the particular lift truck’s
lifting capacity.
• Example: For 3000 pounds lifting capacity of the vehicle, use at least 1500 pounds or
close to that load weight.
• Note: 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 weight
display to show in kilograms. Use a known load weight in kilograms and enter that value
into the system accordingly.
Starting Point
Every time the power is turned on, the software version will be displayed on the right hand
side of the display for a brief moment. When forks are lowered to the ground, the digital
display will show number 8 in the mode window.
MODE
Five Digits Load Weight Readout Display
0
1
0
Calibration of Empty Forks
Lifting of the Empty Forks
Lower the empty forks to the ground (
• Press the “M” key (Use a paper clip) and hold it down for 5 seconds.
No hydraulic pressure in the lifting circuit
)
• After 5 seconds, the MODE display digit will show “0”. This means that the system is
ready for zeroing the scale.
MODE
Five Digits Load Weight Readout Display
• To initiate the zeroing of the SkidWeigh, the mode window must be showing 0.
• Lift the empty forks; do not stop the lifting cycle until mode number changes from o to 1.
• Wait a few seconds, the display will go blank and then it will show 0 or any other number
in the furthest right digit display.
MODE
Five Digits Load Weight Readout Display
Zeroing of lifted empty forks is done!
Calibration of Loaded Forks
1
0
2
0
3
5
4
1
5 0
Lifting of Known Load Weight on the Forks
(Example: Known Load Weight is 1500 Lbs.)
• At this point, drive the vehicle into the skid with a known load weight.
• Make sure that skid load is positioned all the way to the fork’s carriage.
• Start entering a known load weight into the indicator. The first value of the known load
weight can be entered by pressing the “⇑⇑⇑⇑” key.
• The number will increment from 0 to 9 and will wrap around.
• To enter a second digit from the right, press the “M” key and the MODE digit will
increment to 2.
•
Keep pressing “⇑⇑⇑⇑” to enter a second value of known load weight.
• Repeat this procedure until the MODE digit display is 5.
Note: Make sure that you enter 0 in MODE 5, since the known load weight has only 4 digits
as in our example of 1500.
MODE
Five Digits Load Weight Readout Display
MODE
MODE
MODE
MODE
• Before going to MODE 6 (Which is automatic calibration function of known load weight on
forks being lifted) please make sure that the “Known Load Weight” (as in our example,
1500 pounds or kilograms) is well positioned, lowered to the ground and ready to be
lifted.
• Press the “M” key to advance to MODE 6, activate lift control valve and start to lift the
6
“Known Load Weight”; do not stop lifting cycle until digital display shows the calibrated
weight.
MODE
Five Digits Load Weight Readout Display
• Digital display will go blank. Wait a few seconds.
• Within a few seconds digital display will show the value of the calibrated known load
weight.
System weigh calibration is completed!
From this point on, the system weight calibration / setup has been successfully done. All
calibrating parameters are saved and will not be lost when the power to the system is turned off
or battery disconnected. Digital display will show the load weight value until the forks are being
lowered. Display will automatically reset and the system will go into MODE 8; which is a starting
point for standard weighing cycle.
Overload Warning
The ED2-EPT Series with optional overload warning features will allow the end user to enter
whatever overload value is applicable for that particular forklift operation. Every time that pre-set
overload value is reached, the indicator display will ”flash” and the value of the overload load
weight will be shown to the operator.
To stop the indicator display ”flash” (Overload Warning), the operator must lower the load to the
ground. This is a visual safety concern and warning to the operator that the “Overload load
weight” has been reached.
Overload Warning Setup Procedure (MODE 7)
All ED2-EPT Series SkidWeigh’s or other models with such overload warning feature require an
additional step in the standard calibration procedure. To enter the “Overload Warning Value”
you must get to the MODE 7. This is automatic action. To get to the MODE 7 the following is
required:
Right after the MODE 6 once the calibrated weight is shown on digital display (In our
example 1520 Lbs.) YOU MUST LOWER THE FORKS TO GROUND!
This action will automatically advance digital indicator to MODE 7.
As of example, we want to enter into the system the “Overload Warning Value” of 4000 Lb
7
0
7
0
7
0
7
0
7
4
7 0
4 0 0 0
8
MODE Five Digits Load Weight Readout Display
• Using the same keys “M” and “⇑⇑⇑⇑”, enter the “Overload Weight Value”. In our example it’s
4000. You will note that the MODE 7 digit remains throughout this operation.
MODE
MODE
MODE
MODE
MODE
On the last shift, (Utilizing “M” key, left shift) the MODE 7 digit will turn off. Mode 8 will be shown.
• The “Overload Weight Value” of 4000 has been stored in the memory. It will be shown
briefly on the digital display and the unit will return to the measurement MODE 8.
MODE
Five Digit Load Weight Readout Display
MODE
The “Overload Warning Value” has been successfully stored in the memory
Accumulative Load Weight Function Without Onboard Printer:
Left Button:
Every time the indicator shows the load weight and the left button is pressed, the load weight
will be added into a weighing counter and will show the current total weight of all load weights
entered in the counter. (A quick “blink” on the display indicates that the current load weight has
been added into the counter.)
To reset the current load weighing counter or get a printout, press the right button. This will reset
the current total and the cycle will start all over.
Accumulative function for load weights
Right Button
Note: Weight loads can be added only while the indicator shows the load weight. If the load
weight is lowered and Mode 8 is shown on the display, the last load weight will not be added
even if the left button is pressed.
The maximum number of load weights entered into the accumulative counter is 40. If 40 loads
have been reached, the display will show the current total weight of all 40 load weights entered.
This current total weight will stay and “flash”on the instrument display for a moment. The current
accumulative counter of all 40 load weights will be reset automatically and you can start the new
cycle again.
: Reset
Accumulative Load Weight & Printouts with Onboard Printer:
Left Button:
Right Button
Every time the indicator display shows the load weight and the right button is pressed, the
current load weight ticket will be printed and the system load weight counter will RESET.
Example of single load weight being printed:
IVDT Skidweigh
4380
Every time the indicator shows the load weight and the left button is pressed, the load weight will
be added into a load weighing counter. It will also show the current total weight of all load
weights entered in the load weight counter. (A quick “blink” on the display indicates that the
current load weight has been added into the counter)
At any point you can obtain a ticket for all entered load weights stored in the load weighing
counter by pressing the right button. The printout will show all individual load weights and total
weight. As soon as you lower the forks and the last load weight is no longer on the display, the
system will be RESET.
Example of two load weights added in the weighing counter and being printed:
IVDT SkidWeigh
#01 = 01550
#02 = 01000
TOTAL = 2550
The maximum number of load weights entered into the accumulative load weigh counter is 40. If
the number of 40 loads has been reached, the display will show the current total weight of all 40load weights entered. This current total weight will stay and “flash” on the instrument display for a
moment. The current accumulative counter of all 40 load individual weights and total weight will
be printed out. The system will reset automatically and you can start the new cycle again.
Accumulative Function for load weights
: Print/Reset
Example of 40 load weights added in the weighing counter and being printed:
IVDT SkidWeigh
#01 = 01550
#02 = 01000
“ “
#40 = 01265
TOTAL = 42550
On-board Printer Mounting Bracket/Cables
Note:
- The onboard printer, (NCI Mini Printer Series) is for 12 V DC operation.
- Printer can be powered only through IVDT Inc. wiring harness since power from
the vehicle can be anywhere from 12 to 55V DC. Only through original wiring
harness the printer will get 12 V DC from the ED2-SkidWeigh Series Digital
Indicator, regardless of the vehicle voltage.
- Consult printer User’s Manual for installing the paper, printer ribbon, etc.
MODE Description
MODE
Description
Action
Remarks
8
MODE 8
must be
0
next MODE
4
weight value
MODE 8 Represents standard “Weighing Cycle Mode”
MODE 0 to 6 Represents standard calibration mode
MODE 7 Represents “Overload Warning Setup Input”
1
2
3
5
6
Standard “Weighing Cycle Mode”
Zeroing empty forks mode
Enter first value of known load weight
Enter second value of known load
weight
Enter third value of known load weight
Enter forth value of known load weight
Enter fifth value of known load weight
Calibration mode with known load
weight on the forks
Lower the forks to the
ground
Forks must be lowered
to the ground. Lift the
empty forks
0 – 9 numerical
increments, use ⇑ key
0 – 9 numerical
increments, use ⇑ key
0 – 9 numerical
increments, use ⇑ key
0 – 9 numerical
increments, use ⇑ key
0 – 9 numerical
increments, use ⇑ key
The forks must be on
the ground level. Lift
the forks with the
known load weight
shown to initiate
the weighing cycle
Lift empty forks
just above the
ground
Press the “M” key
to advance to the
Press the “M” key
to advance to the
next MODE
Press the “M” key
to advance to the
next MODE
Press the “M” key
to advance to the
next MODE
Press the “M” key
to advance to the
next MODE
After a few
seconds, the
display will show
the known load
7
Overload Warning Setup
Enter Overload
Warning Value as per
instructions described
above.
Applies only for
systems with the
overload warning
option
Troubleshooting
not to the frame of the vehicle
- Replace the pressure transducer
For help with general or miscellaneous problems that you may experience with your ED2 Series
SkidWeigh; refer to the following table for possible solutions.
Problem
MODE 8 digit is not shown on the
instrument display when the
ignition switch is turned ON
When in MODE 8 and the forks
with the load weight are lifted,
there is no weight readout shown
on the instrument display
Weight display shows some
random number (Example: 4630)
regardless if forks lowered or any
weight load lifted
All display digits are “flashing”
999999 when the ignition switch is
turned ON
When the known load weight is
lifted, there is a “larger weight
readout error”
Possible cause
No power to the system
Pressure transducer or
wiring harness
Pressure transducer
ground wire (Black wire)
is broken or
disconnected
The pressure transducer
is near saturation (>
2.45V)
- Follow a proper
“weighing cycle”.
- Calibration required
- Faulty pressure
transducer
Possible solution
- Check whether the fuse is blown
- Check for a bad ground chassis
connection
- Remove any paint around the ground chassis
connection
- On electric vehicles, make sure that the “Black
wire”, negative is connected to the battery negative,
- Check all 3 wires connections from the pressure
transducer cable
- Check the WHITE wire if connection is broken
- Check the RED wire - it should have at least 11V
DC
- Check the pressure transducer for physical damage
- Broken Black wire from pressure transducer
- Make sure that the “BLACK WIRE” from the
pressure transducer to the wiring harness is
connected
-The load weight is too heavy for this vehicle
- Pressure transducer damaged
- Recalibrate the system with known load weight
- The system is calibrated in kilograms, but the
operator thinks that readout is in pounds or vice versa
- Follow the “Standard Weighing Cycle” procedure
- Replace pressure transducer
The instrument display shows
approx. the same weight readout
regardless if the forks are loaded
or not
When the load weight is lifted
display shows the weight value
and display is “flashing”
The lifted load weights are within
the system error of +/- .5 to 1% of
the vehicle lifting capacity most of
the time; but sometimes a “Larger
error might occur”
The display will not return to the
MODE 8, standard weighing cycle
Pressure Transducer
Overload warning
Follow the proper
weighing cycle error
- Forks are not lowered
to the ground
- Pressure transducer
- The white wire (pressure transducer signal output)
is broken or not connected
- Faulty pressure transducer
- The preset overload value is too low
- Check the overload settings and correct it
- Make sure that the standard weighing procedures
are followed.
- When the load weight is lifted, do not move the
vehicle
- When the load weight is lifted, do not tilt the mast
- Replace the pressure transducer
- Lower the forks (attachment) to the ground
(There should be no pressure in the lifting circuit)
- Replace the pressure transducer
ED2-EPT Series SkidWeigh User’s Manual
To obtain load weight readout the indicator must show number 8 in the MODE display.
Insert the forks into the pallet or under the product to be weighed. Make sure that the pallet is
positioned all the way on the fork’s carriage. The number 8 in the MODE display must be shown
before you initiate a “Load Weighing Cycle”.
Activate lift control valve and start lifting the load. Do not stop lifting cycle until the load weight is
shown on digital display.
As soon as the load has been lifted digital display on the indicator will go blank for a moment and
then the weight value of the lifted load will be displayed.
This load weight value will be displayed on the indicator. As soon the forks are being lowered
system will go back to normal weighing mode and number 8 will be displayed in the Mode digit
display.
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