Adam Equipment CBD Series User manual

Adam Equipment
CBD SERIES
SERVICE MANUAL
ADAM EQUIPMENT CO. LTD.
P.N. 7951, Rev. A1, March 2007
@Adam Equipment Company 2007

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@Adam Equipment Company 2007
CONTENTS
1.0 INTRODUCTION............................................................................................................2
2.0 TROUBLE SHOOTING GUIDE......................................................................................3
3.0 ERROR CODES ............................................................................................................4
4.0 CBD DESCRIPTION......................................................................................................4
5.0 SETTING UP THE REMOTE SCALE ............................................................................5
6.0 USER PARAMETERS ...................................................................................................7
7.0 USER CALIBRATION....................................................................................................9
8.0 TECHNICAL PARAMETERS.......................................................................................10
9.0 LOAD CELL DAMAGE.................................................................................................12
10.0 REPLACEMENT PARTS AND ACCESSORIES..........................................................15
11.0 SCHEMATICS..............................................................................................................15

1.0 INTRODUCTION
The CBD series of scales are general purpose counting scales.
Refer to the Operators Manual for details of operation.
This manual will cover details of 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 provide further assistance, the supplier will need the following
information which should be kept ready:
A. Details of your company
-Name of your company:
-Contact person’s name:
-Contact telephone, e-mail,
fax or any other methods:
B. Details of the unit purchased
(This part of information should always be available for any future
correspondence. We suggest you to fill in this form as soon as the unit is
received and keep a print-out in your record for ready reference.)
Model name of the scale:
CBD_____
Serial number of the unit:
Software revision number
(Displayed when power is first turned on):
Date of Purchase:
Name of the supplier and place:
C. Brief description of the problem
Include any recent history of the unit. For example:
-Has it been working since it’s delivered
-Has it been in contact with water
-Damaged from a fire
-Electrical Storms in the area
-Dropped on the floor, etc.
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2.0 TROUBLE SHOOTING GUIDE
PROBLEM POSSIBLE CAUSE
Display is blank Power Switch is faulty or not turned on
No turn on test Battery is faulty or not charged
Power supply is incorrect
Display all zeros after turn on Pan not installed
or E6 is displayed Unstable weight
Load cell damaged
Electronics faulty
‘- - - - -‘ appears on display Maximum capacity exceeded
Load Cell damaged
Electronics is faulty
Display is unstable Drafts or air currents
Obstruction under pan
Sample is moving (animal weighing)
Vibrations through table
Temperature changed dramatically
Electronics faulty
Battery low
Weight value incorrect Calibration error, Recalibrate
Unit calibrated with inaccurate weight
Balance not level
Obstruction between sample and cover
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
Faulty Factory Calibration
Off Centre Loading error Overload Stops not correct
Obstruction under pan
Battery will not charge Charging circuit failure
Battery failure
Incorrect adapter (below 800 mA)
Processorfailure

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3.0 ERROR CODES
ERROR CODE DESCRIPTION POSSIBLE CAUSES
Err 4 Initial Zero is greater than
the permissible value
(typically 4% of maximum
capacity) when power is
turned on or when the
[Zero] key is pressed,
Weight on the pan when
turning the scale on.
Excessive weight on the pan
when zeroing the scale.
Improper calibration of the
scale.
Damaged load cell.
Damaged Electronics.
Err5 Keyboard error. Improper operation of the
scale.
Err6 A/D count is not correct
when turning the scale on. Platform is not installed.
Load cell may be damaged.
Electronics may be damaged.
FAILHor FAILL Calibration error Improper calibration.
If the problem persists
contact your dealer or Adam
Equipment for assistance.
4.0 CBD DESCRIPTION
The CBD 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.

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The basic unit consists of:
9Base
9Load Cell frame
9Power switch
9Main PCB assembly
9Battery
9Display PCB assembly
9Keypad
All models of CBD 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.
Schematics are attached in order to complete the documentation. However it is
rare that the problem due to a faulty component on the PCB is traced by a user.
The main PCB assembly includes:
9A/D converter (AU1),
9Microprocessor (DU1) and
9Power supply/battery charger circuits (DU5, T2).
5.0 SETTING UP THE REMOTE SCALE
The CBD Series can be connected to any size of load cell type weighing base
via the Remote scale port on the right side of the scale case. Ensure you have
the correct base for the scale as each is matched for calibration.
Place the remote scale platform in the position where it is to be used. Level the
scale by adjusting the four feet. If fitted with a spirit level then it should be
adjusted such that the bubble is in the centre.
Press [Local/Rem] and test weighing performance.
REMOTE SCALE CONNECTION
The cable for the load cell goes to a 9 pin D-subminiature plug connector with
the following connections:

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Pin numbers Connection
Pins 1,2 - Excitation (0v)
Pins 4,5 + Excitation (+5v)
Pin 7 + Signal
Pin 8 - Signal
(The sense wires connections of a six wire load cell are not used but can be
connected to the respective Excitation pins).
REMOTE SCALE SET UP
The remote scale should set for a realistic resolution with respect to the input
provided by the load cell/s.
If a single 2mV/V load cell is fitted and more than 60% of the load cell is used for
full capacity then the high output of >6mV span makes it possible to set a high
resolution.
If this criterion is met then the remote scale can be set to a high resolution with a
maximum of 1:30,000, i.e. 300kg x 10g.
It will also be possible to sample on the remote scale with the same accuracy as
the Local.
Where more than one load cell is fitted or the total load cell capacity is not
utilised then a reduced resolution should be selected in the remote scale
technical set up. For example, if a system uses four 2mV/V 1000kg load cells for
a scale of 1000kg capacity then the span output at full scale will be only 2.5mV.
In this situation the resolution should be reduced to give a good number of ADC
counts per displayed division. ie. Set to 1:5000 or 1000kg x 0.2kg.
Setting a high resolution without providing a good input to the remote scale ADC
will not give better accuracy and may make the scale difficult to meet
performance specification.
For best performance ensure a minimum of 0.1µV/d.

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6.0 USER PARAMETERS
Enter the User Parameters section by pressing the [Pst] key during the self-test
when the power is turned on. This will allow the user to set the way he wants the
scale to work by choosing specific values from some options.
Press the [U.Wt./Units] key to scroll through the other parameters. To enter any
parameter, press the [Print] key.
Press [U.Wt./Units] to scroll through the sub-parameters. To see the earlier
setting, press the [Print] key. To change and scroll through the other available
settings, press [U.Wt.]. To choose the desired setting and thereby go back to
the sub-parameter, press the [Print] key.
To return to the parameter, press the [Tare/Zero] key.
PARA-
METER SUB-
PARAMETER DISPLAYS AND SETTINGS
“bEEP"“ "oFF"” Beeper is set to off
“bEEP"” "onIn"” Beeper is set to on
between limits
bEEP
“bEEP” “"on oUt”” Beeper is set to on
outside limits (>0)
“LitE"” “"oFF"”
Backlight is set to off
“LitE"” "on"” Set to on at all times
EL
“LitE"” "AUt" Set to work automatically
when a weight is placed
on the scale or a key is
pressed.
“UnIt” ”KG/Lb”
Kg/Lb both are enabled
F1oFF
UnIt
”UnIt” “KiLo” Kg only is enabled

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”UnIt” “Lb” Lb only is enabled
Print AuoFF Prints only wh
the Auto-
Accumulation is
set to off.
en
Auon Prints only when
the Auto-
Accumulation is
set to on.
PCont Sets the RS-232 interface
to print continuously and
the accumulation function
is disabled.
PModE
SErrE Sets the RS-232 to print
continuously the weight
only.
PbAUd b 600
b 1200
b 2400
b 4800
b 9600
Sets the required baud
rate (speed for the RS-
232 communications).
Default rate is 4800.
F2Prt
PAritY 8 n 1
7 E 1
7 o 1
8 data bits, no parity
7 data bits, even parity
7 data bits, odd parity
U id “Uid”
“ Abc234”
“ “
Shows the current user ID (if any).
Enter a new User ID as described in the Description
under the PLU section. The ID can be alpha-
numeric but is limited to 6 characters.
SCid “Scid”
“ Abc234”
“ “
Shows the current scale ID (if any).
Enter a new Scale ID as described in the
Description under the PLU section. The ID can be
alpha-numeric but is limited to 6 characters.
tECH Allows access to the Technical parameters using a
password. Not normally accessed by user.