Avery Weigh-Tronix PC-220 User manual
PC-220 Counting Scale
Service Manual
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Table of Contents
Removing the Covers ------------------------------------------------------------------ 5
Status Display ---------------------------------------------------------------------------- 6
Error Messages -------------------------------------------------------------------------- 7
Configuring the Scale ------------------------------------------------------------------ 8
Management Mode ----------------------------------------------------------------- 8
Restricted Service Access ------------------------------------------------------- 8
Full Service Access ---------------------------------------------------------------- 9
Verification Mode ------------------------------------------------------------------- 9
Exiting from Full or Restricted Service Access ----------------------------- 9
Navigating the Service Mode ------------------------------------------------------- 10
Product Configuration Branches -------------------------------------------------- 11
Branch 0 - Edit Counter -------------------------------------------------------- 11
Branch 5 - Typical Configurations -------------------------------------------- 11
Branch 6 - Weighing Functionality ------------------------------------------- 11
Branch 7 - Weighing Limits ---------------------------------------------------- 13
Branch 08 - Gravity Compensation ------------------------------------------ 13
Branch 09 - Weight Display ---------------------------------------------------- 14
Branch 19 - Beeper Functions ------------------------------------------------ 14
Branch 20 - Power Saving ----------------------------------------------------- 14
Branch 29 - Key Press Duration ---------------------------------------------- 15
Branch 60 - Tares ---------------------------------------------------------------- 15
Branch 61 - Application Configuration -------------------------------------- 15
Branch 100 - PLUs --------------------------------------------------------------- 16
Calibration ------------------------------------------------------------------------------- 17
Simple Calibration ---------------------------------------------------------------- 17
Full Service Calibration --------------------------------------------------------- 17
Aborting Calibration -------------------------------------------------------------- 18
30kg/60lb Scales ---------------------------------------------------------------------- 18
Replacing Base Covers -------------------------------------------------------------- 18
Illustrated Parts List ------------------------------------------------------------------- 19
Wiring Diagram ------------------------------------------------------------------------ 20
Pages are numbered consecutively beginning with the cover page.
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5
Removing the Covers
1. Disconnect the power supply from the scale.
2. Remove the scale platter.
3. Break the tamper seal.
4. Remove screw A and remove the expansion board cover.
5. Remove the feet (and the springs if the scale is a 30kg machine).
6. Remove screw B at the front edge of the scale.
7. Lever the clips holding the cover using a flat-blade screwdriver.
When replacing the cover, if
either of the clips are dam-
aged an M6 or self-tapping
screw (C) can be used to hold
the cover in place.
6
Status Display
The status display shows some basic information about the scale. To view
this information, press the ON/OFF key twice. A sample display is shown
below as well as a reference table.
Top Row Middle Row Bottom Row
0 Boot block product code Boot block version number
1 Application block Application block version
product code number
2 Configuration block Configuration block
product code version number
3 Product configuration Product configuration
checksum status: edit counter
0 = OK
1 = Checksum failed
4 Mains/battery voltage Blank
5 Secondary calibration Blank
counter
6 Cause of last reset: Blank
0 = Power down
1 = Watchdog
2 = Clock monitor
If you need to contact your authorized Weigh-Tronix distributor, make a
note of all these settings.
= ON/OFF key
7
Error Messages
E5 Disconnect then reconnect the power supply.
E10 Battery failure - replace the batteries (do not use NiCad batteries).
E11 Power supply voltage too high. Make sure the correct power supply
is being used.
E15 Disconnect then reconnect the power supply.
E19 Software download tool error. Try downloading the application again.
E20 Disconnect then reconnect the power supply. If the error reappears,
you will need to replace the load cell.
E21 This could be caused by excessive vibration or an incorrect service
calibration. Either adjust the filters or recalibrate the scale.
E30 Management/Service mode not exited correctly. Re-enter service
mode, select the value to be changed, change the value and go to
the next branch or sub-branch to accept the change.
E35 An invalid configuration for the scale has been given in branch 5.
Re-enter the configurations.
E36 An invalid capacity for the scale has been given in branch 5. Re-
enter the configurations.
E40 The weight used for user calibration is unsteady. Recalibrate the
scale.
E41 An incorrect weight is being used for user calibration. Use the
correct weights.
E42 User calibration is not available for this scale.
E100 Invalid PLU contents. Reprogram the PLU.
E101 Transaction failed.
E102 Transaction failed.
E103 Tare failed. Reprogram the tare.
E110 The counting piece weight is greater than 10% of the capacity of the
scale.
E151 A change to the configuration has failed. Reprogram the configura-
tion.
E152 The user does not have access to this item (in management mode).
Temporary
error
Weight
unsteady
Balance
failed
Under
range
Over
range
8
Configuring the Scale
There are 3 ways to configure the scale:
This mode allows you to configure a few branches of the scale. Because
the configurations can be different for each scale, refer to the User’s
Manual for details on the branches available.
To enter the management mode, press the ON/OFF key, then key in 6231
on the numeric keypad.
To exit management mode, press the ON/OFF key, then the Zero key.
This mode allows you to see all of the scale’s configuration. You will not be
able to alter the branches that are marked as Full service access only. If
you attempt to change these configurations you will see an error message
(E152).
To enter restricted service access, press the ON/OFF key, then the Tare
key, Zero key, Tare key, Zero key, Tare key, Zero key. The scale is now
in verification mode. (see Verification Mode)
Management Mode
Restricted Service
Access
9
Full Service Access This will give full access to the scale’s configuration.
1. Unplug the scale from the power supply.
2. Break the security seal and remove the blanking plate.
3. Plug the service tool (PN 18165-140) into the side of the scale.
4. Replace the scale platter and reconnect the power supply. The scale
will now be in verification mode. (see Verification Mode)
Verification mode will display the weight to four decimal places, and zero
tracking will be disabled.
To go to the configuration menus, press the ON/OFF key, then the left
arrow key. See note at left.
If you need to return to verification mode at any time, press the ON/OFF
key, then the up arrow key. See note at left.
To exit, long press the ON/OFF key. The display will show E 5. You will
need to disconnect the power supply, remove the service tool if you are in
full service access, and reconnect the power supply.
Verification Mode
= Left arrow key
= Up arrow key
Exiting from Full
or Restricted Service
Access
If you do not exit service
mode correctly you will se an
E 30 error message.
10
Navigating the Service Mode
Each configuration setting consists of a value and a location. The location
consists of a Branch number and a Sub-branch number. See note at left.
For example shown at left:
Branch 5 = Weighing capacity
Sub-branch 05 = Primary
Capacity units value 129 = lb
Function Key
Go to next branch. Long press
Go to the next sub-branch. Short press
Go to the previous branch.* Long press
Go to the previous sub-branch.* Short press
Go to branch 00 Long press
Select value to be changed Short press
Change the value. (see note at left) Enter a value*
or
Short press
Increment the value X10. Long press
Exit service mode. Long press
If you are using the service tool,
disconnect the power supply and
remove the tool before repowering
the scale.
After changing a value, you
must go to the next branch or
sub-branch to accept the
change.
You MUST press the Clear
key to clear a value before
keying in a new one.
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