Adam Equipment ACBplus Series User manual

@Adam Equipment Company 2005
Adam Equipment
ACBplus
plusplus
plus SERIES
SERVICE MANUAL
(Software rev. 1.13 for standard models
1.9 for ACBplus-1000 and
2.1H for ACBplus-600H)
ADAM EQUIPMENT CO. LTD.
p.n. 6018, Rev. B2, February 2005

@Adam Equipment Company 2005
Product revision Summary
Manual Revision A,
March, 2004 Initial Product Release with software revision 1.06-1.07 for
standard models and 1.2H-1.3H for ACBplus-600H
Manual Revision B1,
September, 2004 Software rev. 1.13 for standard models
1.9 for ACBplus-1000 and 5000 and
2.1H for ACBplus-600H
Manual Revision B2,
February, 2005 Dropped ACBplus-5000 from the range. Included diagrams for main PCB, display and RS-232.

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CONTENTS
1.0 INTRODUCTION .............................................................................................2
2.0 SPECIFICATIONS...........................................................................................3
2.1 TECHNICAL SPECIFICATIONS ..................................................................3
2.2 COMMON SPECIFICATIONS......................................................................3
3.0 TROUBLE SHOOTING GUIDE........................................................................4
4.0 OPERATION....................................................................................................5
4.1 ZEROING THE DISPLAY.............................................................................5
4.2 TARING........................................................................................................5
4.3 WEIGHING...................................................................................................6
4.4 PERCENT WEIGHING.................................................................................6
4.5 PARTS COUNTING .....................................................................................6
4.6 ACCUMULATION.........................................................................................7
5.0 USER PARAMETERS .....................................................................................8
5.1 SELECTING THE UNITS .............................................................................9
5.2 SETTING OF THE BACKLIGHT ..................................................................9
5.3 SETTING THE PRINTING PARAMETERS................................................10
5.3.1 Selecting the communication port .......................................................10
5.3.2 Setting the print mode .........................................................................10
5.3.3 Setting the baud rate...........................................................................10
5.3.4 Parity settings......................................................................................11
5.4 SETTING OF AUTO-SWITCH-OFF ...........................................................11
5.5 TECHNICAL PARAMETERS .....................................................................11
6.0 USER CALIBRATION ....................................................................................12
7.0 ERROR CODES ............................................................................................13
8.0 ACBplus DESCRIPTION .................................................................................14
9.0 TECHNICAL PARAMETERS.........................................................................15
9.1 LINEARITY.................................................................................................16
9.2 FACTORY CALIBRATION .........................................................................16
9.3 A/D COUNT................................................................................................16
9.4 AUTO ZERO RANGE.................................................................................16
10.0 FACTORY CALIBRATION.............................................................................17
11.0 COMMUNICATION WITH A COMPUTER/PRINTER ....................................18
12.0 LOAD CELL DAMAGE...................................................................................19
13.0 ACBplus EXPLODED VIEW............................................................................22
14.0 ACBplus MAIN PCB ASSEMBLY....................................................................23
15.0 ACBplus DISPLAY PCB ASSEMBLY..............................................................24
16.0 ACBplus I/O PCB ASSEMBLY........................................................................25

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1.0 INTRODUCTION
The ACBplus series of scales are general purpose scales.
Refer to the Operators Manual for details of general operation.
This manual will cover details of service parameters, calibration and troubleshooting.
If you have a problem with the scales that is not directly addressed by this manual
then contact your dealer or Adam Equipment for more assistance.
In order to supply further assistance we will need the following information:
Name of your company:
Contact Name:
Contact telephone, e-mail, fax or other methods:
Model number of the scales:
Serial number:
Software revision number (displayed when power is first turned on):
Brief description of the problem:
Include any recent history of the scale. For example-
Since when the problem is noticed
Water entered
Damaged from a fire
Electrical Storms in the area
Dropped on the floor, etc.

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2.0 SPECIFICATIONS
2.1 TECHNICAL SPECIFICATIONS
ACBplus
plusplus
plus
-150
ACBplus
plusplus
plus
-
--
-300
ACBplus
plusplus
plus
-600
ACBplus
plusplus
plus
-600H
ACBplus
plusplus
plus
-1000
ACBplus
plusplus
plus
-1500
ACBplu
pluplu
plus
ss
s-
3000
Maximum
Capacity
150g 300g 600g 600g
1000g 1500g 3000g
Readability
0.005g 0.01g 0.02g 0.01g 0.01 g 0.05g 0.1g
Tare Range
150g 300g 600g 600g
1000 g 1500g 3000g
Repeatabilit
y(s.d.)
0.005g 0.01g 0.02g 0.01g
0.01 g 0.05g 0.1g
Linearity ±
0.01g 0.02g 0.04g 0.02g 0.02 g 0.1g 0.2g
Pan
120mm (4.7”) 124×144mm
(4.9”X5.7”)
Wind shield
Included as standard
Units of
Measure g
/ ct / Lb / OZ / d / GN / OZt / dWt / MM / TL.T / TL.C /
TL.t /t / N /g2.
2.2 COMMON SPECIFICATIONS
Interface RS-232 Output Standard
(USB optional in future)
Stabilisation Time 2 Seconds typical
Operating Temperature 0°C - 40°C / 32°F - 104°F
Power supply (external) 9VDC / 800 mA
Calibration Automatic External
Internal counts Approx. ~500,000
Display 16mm high 6 digits LCD
With auto backlight and loading bar graph
Scale Housing ABS Plastic with Stainless Steel platform
Overall Dimensions (wxdxh) 195 x 240 x 70mm (7.7” x 9.5” X 2.8”)
Net Weight 1.5 kg (3.3 lb.)

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3.0 TROUBLE SHOOTING GUIDE
PROBLEM POSSIBLE CAUSE
Display is blank Power Switch not turned on
No turn on test Battery Not charged
Power supply or battery faulty
Display all zeros after turn on Unstable weight
or “  ” is displayed Load cell damaged, Electronics faulty
OL appears on display Maximum capacity exceeded
Load Cell damaged, Electronics is faulty
Error code displayed Weight on scale below permissible limit
Pan has been removed
Pan support not seated properly
Electronics faulty, Load Cell damaged
Display is unstable or Drafts or air currents
“  ” is displayed Obstruction under pan
Sample is moving (animal weighing)
Vibrations through table
Temperature changed dramatically
Electronics faulty
Weight value incorrect Calibration error, Recalibrate
Unit calibrated with inaccurate weight
Balance not level
Obstruction between sample and cover or
breeze shield
Wrong unit of weight displayed
Cannot use Full Capacity Over-load Stops hitting pan support or hitting
bottom of load cell
Electronics faulty
Parameters set incorrectly
Load Cell Damaged
Not Linear Overload stops hitting too soon
Load cell damaged, A/D damaged
Off Centre Loading error Overload Stops not correct
Load Cell damaged
Battery will not charge Charging circuit failure
Battery Failure

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4.0 OPERATION
4.1 ZEROING THE DISPLAY
•Press the [Zero] key when the platform is empty.
•[Zero] key may be pressed at any time to set the zero point from which
all other weighing and counting is measured.
•When the zero point is obtained the “O” indicator will be on in the left
bottom corner of the LCD.
•The scale has an automatic re-zeroing function to account for minor
drifting or accumulation of material on the platform. However you may
need to press the [Zero] key to re-zero the scale if small amounts of
weight are shown when the platform is empty.
4.2 TARING
•Zero the scale by pressing the [Zero] key, if necessary.
•The “O” indicator will be on.
•Place a container on the platform, a value for its weight will be
displayed.
•Press the [Tare] key to tare the scale. The weight that was displayed is
stored as the tare value. It is subtracted from the displayed value,
leaving zero on the display. The NET symbol will be on at the right top
corner to indicate that the weight displayed is the net weight.
•As the product is added, only the net weight will be shown.
•The scale could be tared a second time if another type of product was
to be added to the first one. Again only the weight that is added after
taring will be displayed.
•When the container is removed a negative value will be shown. If the
scale was tared just before removing the container, this value is the
gross weight of the container plus all products those were removed.
•The “O” indicator will also be on because the platform is back to the
same condition as it was when the [Zero] key was last pressed.
•To cancel the tare value, press [Tare] again.

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4.3 WEIGHING
•After zeroing the display and taring the container, place the sample in
the container to determine the weight of the sample. The weight will
also be displayed through a bar-graph at the bottom of the LCD.
•The display will show the weight and the units of weight currently in
use. The stable indicator will be on. To change the weighing units,
press [Mode] to cycle through the options of units those are enabled.
See the Parameter section to enable or disable the weighing units.
•The accumulated value in the memory will be cleared when a new
weighing unit or during recalling the memory, % weighing or parts
counting is selected.
4.4 PERCENT WEIGHING
•The scale will allow a sample weight to be shown as 100%. Then any
other weight placed on the scale will be displayed as a percentage of
the original sample.
•For example is 350g is placed on the scale and the [%] key is pressed
the display will show 100.00%. Removing the 350g weight and place a
300g weight on the scale. The display will show 85.71% as 300g is
85.71% of 350g.
•Note: The scale may jump by large numbers unexpectedly if small
weights are used to set the 100% level. For example, if only 23.5g is on
a scale with 0.5g increments and the scale is set to 100%, the display
will show 100.00%. However, a small change of weight will cause the
display to jump to 102.13%, as one scale division (0.5g) increase to
24.0g will be equivalent to a 2.13% increase.
•Pressing the [%] key again will return the scale to normal weighing.
4.5 PARTS COUNTING
•When the scale is in normal weighing mode, pressing the [Smpl] key
will start the parts counting function.
•Before beginning, tare the weight of any container that will be used,
leaving the empty container on the scale.
•Place the number of samples on the scale. The number should match
the options for parts counting, 10, 20, 50, 100 or 200 pieces.
•Press the [Smpl] key.

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•The scale will initially show "    
      
    " asking for a sample size of 10
parts. Press [Mode] to cycle through the options: 10, 20, 50, 100, 200
and back to 10.
•Press [Smpl] again when the number matches the number of parts
used for the sample. As more weight is added the display will show the
number of parts (  
  
  ) with respect to the chosen sample size.
•Press [Mode] to display unit weight ( 

 ), total weight ( g ) or the count
(  
  
  ). The total and the unit weight are shown in the current units.
•Press [Smpl] to return to normal weighing.
4.6 ACCUMULATION
•When the scale is set for automatic accumulation, the weight will be
added to the memory when the scale becomes stable. The scale must
return to zero before another weight is added.
•When the scale is set to manual accumulation (See the Parameter
Section) the weight displayed will be stored in memory when the [Print]
key is pressed and the weight is stable.
•The display will show "  " followed by the total value in the memory
for 2 seconds before returning to displaying the weight of the item on
the scale.
•The weight will be output to a printer or PC.
•Remove the weight, allowing the scale to return to zero and put a
second weight on.
•Press [Print], the display will show "  " followed by the new total
in the memory for 2 seconds before returning to displaying the weight
of the item on the scale.
•Continue until all weights have been added.
•To view the totals in memory press the [Print] key when the scale is at
zero. The display will show "  " (where “  ” is the total number of
readings) and the total weight, before returning to zero.
•The total will also be printed via the RS-232 interface.
•To clear the memory, press [Smpl] immediately after pressing [Print].

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5.0 USER PARAMETERS
•There are 5 parameters that can be chosen by user to set the scale.
•To set the parameters press the [Mode] key during self-checking test.
•After a few seconds, the display will show the first function "  ".
•To view the current settings of each parameter, press the [Zero] key.
•Press the [Zero] key again to cycle through the other parameters along
with their current settings. For example, if “  ” is displayed with the
weighing unit Pounds, the user will not be able to use this unit while
weighing a sample.
•Press [Mode] to change the settings of a particular parameter. For
example, to enable the weighing unit pounds change the setting to “  ”
by pressing [Mode] now.
•Use the [Print] key to leave a parameter unchanged.
•The following parameters are available:
FUNCTION DESCRIPTION

Sets the units to be used (See section 5.1)
g / ct / Lb / OZ / d / GN / OZt / dWt / MM / TL.T / TL.C / TL.t /t / N /g2.

Sets the backlight (See section 5.2)
 : backlight always on
 : backlight automatically turns on when a key is pressed
 : backlight always off

Sets the print parameters (See section 5.3)

Sets the auto switch-off parameter (See section 5.4)

Pressing [Zero] will allow the user to enter the technical parameters
setting mode. It is recommended not to proceed with the settings of
these parameters as those are set up at the factory.

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5.1 SELECTING THE UNITS
•When “ 

 ” is displayed, press the [Zero] key to view the current
settings of each unit.
•Press [Zero] again to cycle through the other units along with their
current settings. For example, if “  ” is displayed with the weighing
unit Carats, the user will not be able to use this unit while weighing.
•Press [Mode] to change the settings of a particular unit. For example,
to enable the weighing unit Carats, change the setting to “  ” by
pressing [Mode] now.
•Use the [Print] key to leave a parameter unchanged.
•While weighing a sample, the display will show the weight and the units
of weight currently in use. To view the weight in other units (which are
enabled), press [Mode].
5.2 SETTING OF THE BACKLIGHT
•The backlight may be enabled or disabled by the user.
•If the backlight is disabled, the battery life will be maximised.
•The following settings are available:

Sets the backlight to operate automatically when a weight is
placed on the scale or a key is pressed.

Sets the backlight to be off.

Sets he backlight to be on for full time.
•When “ 

 ” is displayed, press the [Zero] key to view the current
setting for the backlight.
•Press [Mode] to scroll through other settings.
•Press [Zero] to store a particular setting.
•Use the [Print] key to leave a parameter unchanged.

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5.3 SETTING THE PRINTING PARAMETERS
When “ 

 ” is displayed, press [Zero] to view the first printing parameter.
5.3.1 Selecting the communication port
•The selected port, for example “ 

 

 ” will be displayed.
•Press [Mode] to cycle through the other options. The user can select
“ 

  ” or “ 

  ” as the communication port. Currently, only RS-
232 interface is available and the scale is set with this port only.
•Press [Zero], to view the next printing parameter.
5.3.2 Setting the print mode
•The current setting of the print mode is displayed,
•Press [Mode] to cycle through the other options.
•The following options are available:

The scale sends the accumulated weights to the
communication port, whenever the [Print] key is pressed.

It will set the RS-232 interface to print the weights
continuously and the accumulation function is disabled.

The weighing results will be sent to the communication port
automatically whenever a weight is placed on the platform.
•Press [Zero], to view the next printing parameter.
5.3.3 Setting the baud rate
•The current baud rate setting will be displayed.
•Press [Mode] to cycle through the other options.
•The following settings are available:



 (default value) 

•Press [Zero] to view the next printing parameter.

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5.3.4 Parity settings
•The current Parity setting will be displayed.
•Press [Mode] to cycle through the other options.
•The following settings are available:

8 data bits, no parity
 
  
 
7 data bits, even parity



7 data bits, odd parity
•Press [Zero], the display will go back showing “  ”.
•Press [Mode] to go to the next parameter which is “  ”.
5.4 SETTING OF AUTO-SWITCH-OFF
•The Auto switch-off time may be set up by the user.
•When “ 



 ” is displayed, press the [Zero] key to view the current
setting for the backlight.
•Press [Mode] to scroll through other settings (0, 5, 10, 20 and 30
minutes).
•Press [Zero] to store a particular setting.
oUse the [Print] key to leave a parameter unchanged.
5.5 TECHNICAL PARAMETERS
•Next parameter is “  ”. This allows the user to enter the Technical
Parameters section.
•Press [Print] to return to weighing. The scale will run the self-test
before displaying the zero along with the last selected unit.
Note:
It is recommended not to proceed with the settings of the Technical
Parameters which are set up at the factory and are often referred to as Service
Parameters. Check the Service Manuals for more details.

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6.0 USER CALIBRATION
•This parameter allows the user to calibrate the scale any time during
the operation.
•Switch the scale off and then on it again by pressing [On/Off].
•During the self-test press [Smpl] and [Print] together.
•The display will show "  ". Remove all weights from the pan.
•Wait for the stability indicator to be on and then press [Zero].
•The display will then show the first calibration weight request.
•Press [Mode] to scroll through the other calibration weights.
•Press [Zero] to select a calibration weight. The display will show
“  ”.
•Place this weight on the platform and press [Zero] when the stability
indicator will be on to show the value is stable.
•Once calibration is complete, the scale will return to normal weighing
counting back to zero. Remove the calibration weight at this stage.
•Place the weight back on the pan to re-check whether the calibration is
correct. If necessary, repeat the process.
Calibration weights
Model # ACBplus
plusplus
plus
150
ACBplus
plusplus
plus
300
ACBplus
plusplus
plus
600
ACBplus
plusplus
plus
600H
ACBplus
plusplus
plus
1000
ACBplus
plusplus
plus
1500
ACBplus
plusplus
plus
3000
Weight 1 50g 100g 200g 200g 500g 500g 1000g
Weight 2 100g 200g 400g 400g 1000g 1000g 2000g
Weight 3 150g 300g 600g 600g - 1500g 3000g

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7.0 ERROR CODES
ERROR
CODES
DESCRIPTION SUGGESTIONS
    
Over-range Remove weight from the scale.
If the problem persists contact your dealer or Adam
Equipment for assistance.

Zero Setting
Error The scale was outside the normal zero setting range
either when it was turned on or when the [Zero] key was
pressed.
Remove weight from the scale and try again.
Use the [Tare] key to set the display to zero value.
If the problem persists contact your dealer or Adam
Equipment for assistance.

!

Keyboard Error Improper operation of the scale.

Incorrect A/D
count The values from the A/D converter are outside the normal range.
Remove the weight from the scale if over-loaded. Make
sure the pan is attached.
Indicates the load cell or the electronics may be faulty.
If the problem persists contact your dealer or Adam
Equipment for assistance.

A/D count is out
of normal range
during turning the
scale on
Initial instability during turning on the scale which will get
adjusted automatically.
There may be movement, vibration or dirt on the scale
during turning on.

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8.0 ACBplus
plusplus
plus DESCRIPTION
The ACBplus scales have an enclosure with all components mounted within it. To
gain access to the components remove the 4 screws securing the cover to the base.
The basic unit consists of:
Base
Load Cell frames
Load Cell
Main PCB assembly
Battery
Display PCB assembly
Keypad
I/O PCB (RS 232, Power IN + OUT)
All models of ACBplus are similar except the selection of load cells and the program.
Normally if a problem is found with a circuit board the most cost effective method of
solving the problem is to replace the circuit board.
The main PCB assembly includes:
Sections for load cell input filtering
A/D converter (AUI),
Microprocessor (U2) and support circuits and
Power supply/battery charger circuits (U1, T1 and D1).

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9.0 TECHNICAL PARAMETERS
The scale has 4 technical parameters.
To set these parameters turn the scale off and then turn it on again. Press the
[Mode] key during the initial counting from 9 to 0 on the display.
Display will show “  ”- the first parameter which can be set by the user.
Press [Mode] to scroll through other parameters.
Press [Zero] when display shows “  ”, next “ " ” will be displayed.
Press [Smpl], [Print] and the [Tare] key in this order.
Pressing [Zero] will allow the user to enter the Technical parameters setting mode.
The first technical parameter “ # ” will be displayed.
Press [Mode] to scroll through the technical parameters as below.
#

Corrects Linearity

Allows to enter the Factory Calibration mode. See section
10.0 for details.


Displays the A/D Count to assess range and stability.

The auto-zero will automatically set the scale to zero
when the displayed weight is near zero. This is to make
sure that the scale is measuring weight from an accurate
zero starting point.
The Auto zero value can be set to 0.5, 1, 2 or 4 scale
divisions. The normal setting is 1 scale division. The
display will show “  ”.

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9.1 LINEARITY
Press [Zero] when “ # ” is displayed.
Next “ " ” will be displayed.
Press [Print], [Smpl] and the [%] key in this order and press [Zero].
Display will show “  ”. Press [Zero] “1/3 LoAd”, Press [Zero] “3/3 LoAd”
Press [Zero]. The balance will return to normal weighing.
9.2 FACTORY CALIBRATION
Press [Zero] when “  ” is displayed.
See section 10.0 for details on Factory Calibration.
9.3 A/D COUNT
Press [Zero] when “  ” is displayed.
The A/D Count will be displayed. If the Load cell is good then Counts should operate
between 10,000 and 900,000 with maximum load.
Press [Zero] to escape this parameter.
Press [Mode] to go to the next technical parameter.
9.4 AUTO ZERO RANGE
Press [Zero] when “  ” is displayed.
Press [Mode] to scroll through the options for auto-zero settings (0.5d, 1d, 2d, 4d).
The normal setting is 1 scale division. The display will show “”.
Press the [Zero] key to store the changed setting.
Press [Mode] to go back to the first technical Parameters.
Or, press [Print] to return to normal weighing.

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10.0 FACTORY CALIBRATION
When “  ” is displayed, press [Zero].
The display will show "  ". Remove all weights from the pan and then press
[Zero].
The display will then show the first calibration weight request.
You may press [Mode] to scroll through the other available calibration weights.
However, for best accuracy, use the weight equal to the full capacity of the scale.
Press [Zero] to select a calibration weight. The display will show “  ”.
Place this weight on the platform and press the [Zero] key when stable.
Note: The scale should be stable before pressing [Zero] to accept a
weight. The stability indicator will be on to show the value is stable.
Once calibration is complete, it will return to normal weighing counting back to zero.
Place the weight back on the pan to re-check whether the calibration is correct. If
necessary, repeat the process.
Calibration weights
Model # ACBplus
plusplus
plus
150
ACBplus
plusplus
plus
300
ACBplus
plusplus
plus
600
ACBplus
plusplus
plus
600H
ACBplus
plusplus
plus
1000
ACBplus
plusplus
plus
1500
ACBplus
plusplus
plus
3000
Weight 1 50g 100g 200g 200g 500g 500g 1000g
Weight 2 100g 200g 400g 400g 1000g 1000g 2000g
Weight 3 150g 300g 600g 600g - 1500g 3000g

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11.0 COMMUNICATION WITH A COMPUTER/PRINTER
The ACBplus series of scales come with a standard RS-232 interface.
The standard Interface parameters are: Connection details are:
Data Format for normal weighing operations, parts counting or recalling
of totals from memory will all be different.
Normal Output: G S _ X X X . X X u u u
Input commands format :
The scale can be controlled with the following commands. The commands must be
sent in upper case letters, i.e. “T” not “t”.
T<cr><lf> Tares the scale to display the net weight. This is the same as pressing
[Tare] key.
Z<cr><If> Sets the zero point for all subsequent weighing. Display shows zero.
T5.345<cr><if>
Would be same as entering a preset tare value of 5.345 from keypad
P<cr><lf>
Prints the results to a PC or printer using the optional RS-232 interface. It also adds the value to the accumulation memory if the
accumulation function is not set to automatic.
GS 123.45g GS for Gross Weight, NT for Net Weight and u for unit of weight
No. 1 This number increments every time a new value is stored in memory
Total 123.45g The total value stored in memory
<lf> Includes 2 line feeds
<lf>
RS-232 output of weighing data
ASCII code
4800 Baud
8 data bits
No Parity
Connector: 9 pin d-subminiature
socket
Pin 3 Output
Pin 2 Input
Pin 5 Signal Ground