Adam Equipment CFC SERIES User manual

Adam Equipment
CFC SERIES
SERVICE MANUAL
ADAM EQUIPMENT CO. LTD.
P.N. 7952, Rev. A2, February 2007
@Adam Equipment Company 2007

@Adam Equipment Company 2007

CONTENTS
1.0 INTRODUCTION ............................................................................................. 3
2.0 TROUBLE SHOOTING GUIDE ....................................................................... 4
3.0 ERROR CODES.............................................................................................. 5
4.0 CFC DESCRIPTION........................................................................................ 6
5.0 CFC USER PARAMETERS............................................................................. 7
6.0 CFC USER CALIBRATION.............................................................................. 9
7.0 CFC FACTORY PARAMETERS AND CALIBRATION ...................................10
7.1 FACTORY CALIBRATION..........................................................................12
8.0 LOAD CELL DAMAGE....................................................................................13
9.0 REPLACEMENT PARTS AND ACCESSORIES.............................................15
10.0 SCHEMATICS ................................................................................................16

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1.0 INTRODUCTION
The CFC series of scales are general purpose counting scales. Refer to
the Operators Manuals for details of the general 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 supply further assistance we will need the following
information:
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:
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
PROBLEMS POSSIBLE CAUSES
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)
Processor failure
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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.
@Adam Equipment Company 2007
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4.0 CFC DESCRIPTION
The CFC scales have an enclosure with all components mounted within
it. To gain access to the components remove the 6 screws securing the
cover to the base.
The basic unit composed of:
Load Cell
Top Pan
Load Cell frame
Transformer / external adapter
Main PCB assembly with 3 LCDs
Battery
Keypad
All models of CFC 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 filter
A/D converter (AU1)
Microprocessor and support circuits (U1, U4)
Power supply / battery charger circuits (U3, T1)
Please note that whenever a new PCB is installed it should match the
processor and software that is intended to be used.
As the PCBs fit many models, there is no data loaded into the memory
devices. When fitting a new PCB, always set all factory and user
parameters and perform all calibrations to allow the ADC to begin
running and weight to be displayed.
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5.0 CFC USER PARAMETERS
•To set the parameters it is necessary to enter a secure menu.
This is done by entering a password number when
requested.
•To enter the parameter menus press [Tare] during initial
counting of the display after power is turned on. The
“WEIGHT” Display will show "PIn " requesting the
password number to be entered.
•The default password is "0000" but other numbers can be set
using the parameter menus.
•Press the [0] key four times when the display shows "PIn- - -",
Press the [Tare] key again.
•The following parameters can be accessed using the [M+]
key to cycle through the choices. The “UNIT WEIGHT”
display will show the name of the parameters. To enter a
parameter, press the [Tare] key. At any time press the [Zero]
key to return to weighing.
Display Description
F1 CAL See the calibration section for details.
F2 CAP Selects the scale capacity.
Scroll through the available options using the [M+] key. Press [Tare] to store
the value and return to menu.
F3 dISets the scale increment.
Press [Tare] to enter to menu. Press [M+] to show the options (5, 10 and 20).
Press [Tare] to accept the selection and return to menu.
F4 Cnt Displays the A/D counts.
Press [Tare] to see the count. Pressing it again will return to menu.
F5 PIn Sets a new password number. Press [Tare]. The “UNIT WEIGHT” display
will show "Pin1"
Enter the new password number then press [Tare].
Display will change to "Pin 2 ", Enter the password again and press [Tare].
The display will show "donE" to show the new password has been accepted
and will return to the menu. Record the new password in a secured place.
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F6 Prt Sets the RS-232. Press [Tare] to show the following sub-menus.
PbAUd-Select from the desired baud rates
Press [Tare] to see the earlier setting. Press [M+] to scroll through
the options (600, 1200, 2400, 4800 and 9600). Press [Tare] to
select the desired value and return to the sub-menu.
PnodE-Sets the printing mode to-
AU on (Print anytime a weight is placed on the scale).
AUoFF (Print whenever the [Print] key is pressed).
P Cont (Print continuously the unit weight, no. of pieces and the
total weight).
SEIrE (Continuously print the weight only)
Press [Tare] to select and return to the sub-menu.
PArity– Select from the following settings-
n 8 1-8 data bits, no parity
E 7 1-7 data bits, even parity
o 7 1-7 data bits, odd parity
Press [Tare] to select and return to the sub-menu.
Press [Zero] to return to the menu.
F7 SPd This is used to set the speed at which the scale will run the ADC. The settings
available are 7.5, 15, 30 and 60- the slowest setting being 7.5 and the fastest
is 60. Press [Tare] to select the desired value and return to the menu. Press
[Zero] to return to weighing.
NOTE: If the User Parameters cannot be accessed using the default
code “0000”, use the factory code. See section 7.0 for details on Factory
parameters.
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