Avery Weigh-Tronix ZK830 User manual

ZK830
User Instructions
AWT35-501609
Issue AE

ZK830_u_en_501609.book
Avery Weigh-Tronix is a trademark of the Illinois Tool Works group of companies whose ultimate parent company is Illinois Tool
Works Inc (“Illinois Tool Works”). Copyright © 2019 Illinois Tool Works. All rights reserved.
No part of this publication may be reproduced by making a facsimile copy, by the making of a copy in three dimensions of a two-dimensional
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This publication was correct at the time of going to print, however Avery Weigh-Tronix reserves the right to alter without notice the
specification, design, price or conditions of supply of any product or service at any time.

ZK830 Counting Scale User Instructions 3
Table of Contents
page
Table of Contents ...................................................................................................................................... 3
Chapter 1 General information and warnings ......................................................................................... 5
About this manual ..............................................................................................................5
Text conventions ......................................................................................................... 5
Special messages ....................................................................................................... 5
Installation .......................................................................................................................... 6
Safe handling of equipment with batteries .................................................................. 6
Wet conditions ............................................................................................................. 6
Routine maintenance ......................................................................................................... 7
Cleaning the machine ........................................................................................................ 7
Training .............................................................................................................................. 7
Sharp objects ..................................................................................................................... 7
Chapter 2 Introduction .............................................................................................................................. 9
Basic counting principles ................................................................................................... 9
Front panel ....................................................................................................................... 10
Annunciators ............................................................................................................. 11
Powering up the ZK830 ................................................................................................... 11
Connections on the BSQ ................................................................................................. 12
Leveling the scale ............................................................................................................ 14
Numeric entry procedure (without optional keypad) ........................................................ 15
Numeric entry procedure (with optional keypad) ............................................................. 15
Printing ............................................................................................................................. 15
Chapter 3 Indicator applications ............................................................................................................ 16
First time power up .......................................................................................................... 16
Counting application ........................................................................................................ 16
Sampling methods ..................................................................................................... 16
Remote base switching (optional keypad required) .................................................. 17
Entering known tare weights and piece weights (optional keypad required) ............. 17
SELECT key default function .................................................................................... 17
Special key functions ................................................................................................. 18
Sample size ............................................................................................................... 18
Counting in dribble mode .......................................................................................... 18
Counting in bulk mode ............................................................................................... 19
Using PLUs (optional keypad only) ........................................................................... 20
Check counting .......................................................................................................... 21
General weighing application ........................................................................................... 22
SELECT key default function .................................................................................... 22
Gross weighing .......................................................................................................... 22
Net weighing .............................................................................................................. 22
High resolution weighing (if enabled) ........................................................................ 24
Percentage weighing ................................................................................................. 24
Using setpoints .......................................................................................................... 24
Printing ...................................................................................................................... 25
Checkweighing application .............................................................................................. 26
SELECT key default function .................................................................................... 26
Special key functions ................................................................................................. 26
Checkweighing operation .......................................................................................... 26
Weighing a target object ............................................................................................ 27
Checkweighing using PLUs (with optional keypad only) ........................................... 27

4 ZK830 Counting Scale User Instructions
Accumulating gross and net weights ......................................................................... 28
Chapter 4 Menus ...................................................................................................................................... 29
Accessing the menus ....................................................................................................... 29
Menu annunciators .......................................................................................................... 29
Exiting the menus ............................................................................................................ 30
USER level menus ........................................................................................................... 30
User menu ....................................................................................................................... 31
Time .......................................................................................................................... 31
About menu ...................................................................................................................... 33
Audit menu ....................................................................................................................... 34
Chapter 5 Error messages ...................................................................................................................... 35
Chapter 6 String index/character data entry ......................................................................................... 36
Chapter 7 Options .................................................................................................................................... 37
Remote keypad ................................................................................................................ 37
Light stack ........................................................................................................................ 37
Debris shield .................................................................................................................... 38
Desk/wall mount ............................................................................................................... 38
Columns ........................................................................................................................... 39
Draft shield ....................................................................................................................... 39
Underhook ....................................................................................................................... 40
Ball top ............................................................................................................................. 40
Batteries ........................................................................................................................... 41
Clamp down plate ............................................................................................................ 41
802 wireless option card .................................................................................................. 42
Remote base analog card ................................................................................................ 42
Printer .............................................................................................................................. 43
Scanner ............................................................................................................................ 43
Chapter 8 Supervisor menu .................................................................................................................... 44
General Weighing application supervisor menu .............................................................. 45
Setpoint menu item ................................................................................................... 46
Battery menu item ..................................................................................................... 46
PLU menu item .......................................................................................................... 47
Totals menu item ....................................................................................................... 47
App Pwr menu item ................................................................................................... 47
Counting application supervisor menu ............................................................................. 48
Count menu item ....................................................................................................... 49
PLU menu item .......................................................................................................... 50
Checkweighing application supervisor menu ................................................................... 52
Check menu item ...................................................................................................... 52

ZK830 Counting Scale User Instructions 5
1.1 About this manual
1 General information and warnings
1.1 About this manual
This manual is divided into chapters by the chapter number and the large text at the top
of a page. Subsections are labeled as shown by the 1.1 and 1.1.1 headings. The
names of the chapter and the next subsection level appear at the top of alternating
pages of the manual to remind you of where you are in the manual. The manual name
and page numbers appear at the bottom of the pages.
1.1.1 Text conventions
Key names are shown in bold and reflect the case of the key being described. If a key
has a dual function it may be referred to by its alternate function.
Displayed messages appear in bold italic type and reflect the case of the displayed
message.
Annunciator names appear as italic text.
1.1.2 Special messages
Examples of special messages you will see in this manual are defined below. The
signal words have specific meanings to alert you to additional information or the relative
level of hazard.
CAUTION! 
This is a Caution symbol. 
Cautions give information about procedures that, if not observed, could result
in damage to equipment or corruption to and loss of data.
NOTE: This is a Note symbol. Notes give additional and important information, hints
and tips that help you to use your product.

6 ZK830 Counting Scale User Instructions
General information and warnings
1.2 Installation
1.2.1 Safe handling of equipment with batteries
1.2.2 Wet conditions
Under wet conditions, the plug must be connected to the final branch circuit via an
appropriate socket / receptacle designed for washdown use.
Installations within the USA should use a cover that meets NEMA 3R specifications
as required by the National Electrical Code under section 410-57. This allows the unit
to be plugged in with a rain tight cover fitted over the plug.
Installations within Europe must use a socket which provides a minimum of IP56
protection to the plug / cable assembly. Care must be taken to make sure that the
degree of protection provided by the socket is suitable for the environment.
NO USER SERVICEABLE PARTS.REFER TO Q U A LIFIED SERVICE
PERSO N N EL FO R SERVICE.
Equipment to be powered by a UL Listed I.T.E. power supply: rated 12 -36VDC and
marked “LPS”, or a UL Listed power supply rated 12-36VDC and marked “Class 2.”
The Socket-Outlet shall be installed near the equipment and shall be easily
accessible.
CAUTION: Danger of explosion if battery is incorrectly replaced. Replace only
with the same or equivalent type recommended by the manufacturer. Dispose
of used batteries according to the manufacturer’s instructions.
ATTENTION: Il y a danger d'explosion s'il y a remplacement incorrect de la
batterie, remplacer uniquement avec une batterie du même type ou d'un type
équivalent recommandé par le constructeur. Mettre au rebut les batteries
usagées conformément aux instructions du fabricant.

ZK830 Counting Scale User Instructions 7
1.3 Routine maintenance
1.3 Routine maintenance
Always isolate the indicator from the power supply before starting any routine
maintenance to avoid the possibility of electric shock.
1.4 Cleaning the machine
1.5 Training
Do not attempt to operate or complete any procedure on a machine unless you have
received the appropriate training or read the instruction books.
To avoid the risk of RSI (Repetitive Strain Injury), place the machine on a surface which
is ergonomically satisfactory to the user. Take frequent breaks during prolonged usage.
1.6 Sharp objects
Do not use sharp objects such as screwdrivers or long fingernails to operate the keys.
IMPORTANT: This equipment must be routinely checked for proper operation
and calibration.

Application and usage will determine the frequency of calibration required for
safe operation.
Table 1.1 Cleaning DOs and DON’Ts
DO DO NOT
Wipe down the outside of standard products
with a clean cloth, moistened with water and
a small amount of mild detergent
Attempt to clean the inside of the machine
Use harsh abrasives, solvents, scouring cleaners or
alkaline cleaning solutions
Spray the cloth when using a proprietary
cleaning fluid
Spray any liquid directly on to the display windows

ZK830 Counting Scale User Instructions 9
2.1 Basic counting principles
2 Introduction
The ZK830 is an indicator which, when attached to a BSQ digital scale base, creates a
highly accurate counting, weighing and checkweighing system. The indicator, shown in
Figure 2.1 with the optional keypad, is easy to use. The indicator has two full duplex
RS232 ports, one USB VCP (virtual comm port), Ethernet port, three logic level inputs
with configurable functions, three setpoint outputs and an expansion card slot for 1 of
2 option cards:
l802 Wireless card
l5V Analog scale card
Other options available are a stack light kit for visual confirmation of outputs, two
columns for mounting the indicator above the BSQ base, battery packs and scanners.
See the Specification literature for a full list of specifications.
Figure 2.1 ZK830 front panel with optional keypad
The ZK830 can have a remote base attached which can be analog or digital.
For information on the BSQ bases please refer to the manuals for BSQ line.
2.1 Basic counting principles
There are several things which affect counting accuracy:
lenvironmental noise (vibration, wind, etc.)
lnumber of sample parts used
lthe weight consistency of the sample parts
lthe weight of one part
laccuracy requirement
Changes in each, or any one, of these variables can affect the accuracy for the better
or for the worse. If there is wind or vibration accuracy will drop, especially if parts are
small in weight. If parts are not a consistent weight, accuracy can be poorer but may
be increased by using a large sample size.
Accuracy with this system can be extremely high, even with small parts, if the
environment is controlled, parts have a consistent weight and a large enough sample
size is used.
lb
kg
GROSS
NET
TAR E
PRINT
SP
PCWT% TOTAL
g
COUNT
HI RES
ZK830
THE COUNTING
FEATURE IS NOT LEGAL
FOR TRADE
TARE SELECT UNITS
PRINT
SAMPLE
ZERO
F1
SCALE
F2
PLU
PCWT
F3
F4
PT
1
2
1
2
3
4
5
6
7
8
9
C
0
.

10 ZK830 Counting Scale User Instructions
Introduction
2.2 Front panel
The front panel, shown in Figure 2.1, consists of the keys and display.
The normal function of the keys on the front panel are listed below. Some keys will have
special functions in certain applications. Details are provided in the individual
application sections.
Never press a key with anything but your finger. Damage to the overlay may result if
sharp or rough objects are used.
Press the TARE key to perform a tare function.
With no weight on the scale, press the TARE key to clear a tare value.
Acts as an up arrow key for menu navigation.
Allows you to access minus and comma signs.
Acts as an ABORT key during the sampling process.
Press the SELECT key to toggle between the active display values.
Press and hold to enter the setpoint editor in all applications.
Acts as a down arrow key for menu navigation.
Allows you to access minus and comma signs.
Press the ZERO key to zero the display.
Acts as an ENTER key to accept a displayed value or function.
Press the PRINT to send information to a peripheral device through a configured
communications port. Press and hold the PRINT key to print accumulated totals, if
enabled.
Acts as a left arrow key for menu navigation.
Press the UNITS key to scroll through the available units of measure while in normal
operating mode.
Acts as a right arrow key for menu navigation.
The UNITS key is disabled when displaying counts.
Press the SAMPLE key to select application specific choices.
Aborts a numeric entry and acts as an ESCAPE key in the menu navigation.
Press and hold to view the password entry screen for menu access.
Keys on the optional keypad shown below:
Press the SCALE key to switch between two attached scales.
Press the PLU key to access the PLU list. In the counting application this key can be
used to update piece weight and or tare weight if enabled.
Press the PCWT key to enter a known piece weight.
If enabled, allows the user to see a high resolution weight value.
In the count application allows you to enter or view piece weight values.
Use the numeric keypad to enter values or clear a value from the display (C key).
TARE
SELECT
ZERO
PRINT
UNITS
SAMPLE
F1
SCALE
F2
PLU
F3
PCWT
F4
123
456
789
C0 .

ZK830 Counting Scale User Instructions 11
2.3 Powering up the ZK830
2.2.1 Annunciators
The annunciators on the display are shown and labeled in Figure 2.2.
Figure 2.2 Annunciators
The triangular annunciators will light during operation to inform the user of the weighing
mode, active unit of measure, etc.
2.3 Powering up the ZK830
The ZK830/BSQ comes with a base mounted AC power supply unit (PSU) connected
to the back of the BSQ. This supplies the required input power of 12 to 36 VDC @
200ma minimum and is connected to a properly grounded outlet (100 VAC - 240 VAC,
50 or 60 Hz). The indicator is always ON as long as power is received. See Base
mounted AC PSU on page 13.
If using the optional rechargeable battery pack mounted on the rear of the base you
can expect approximately 16 hours of operation between charges. Recharge time is
four hours using the in-line PSU. The battery pack requires 24 to 36V to charge. See
Battery power on page 14 for more information. The battery timer setting can be used
to turn the indicator display OFF automatically.
You can also power the indicator with a 12 to 36 VDC power supply (150ma minimum
at 24VDC) via a 2.1mm center positive barrel jack plugged into the receiver on the back
of the indicator.
The first time you power up the ZK830 you need to pick which application you will be
using. See First time power up on page 16 for instructions on how to do this.
lb
kg
GROSS
NET
TARE
0
g
COUNT
HI RES
PRINT SP % PCWT TOTAL
Under Accept Over
Center-of-zero
Motion
Gross weight
Net weight
Tare weight
Print
High
Resolution
Battery
Status
Piece weight
Units of
measure
Total
Percent
Count
Active
Setpoint

12 ZK830 Counting Scale User Instructions
Introduction
2.4 Connections on the BSQ
The BSQ comes with two different back panels, depending on the power option you
choose. One is for AC power only and the other is for use with the optional battery pack
or AC power. These two panels and their connections are shown in Figure 2.3.
Figure 2.3 BSQ connections
Power connection Battery connections
Scale
connection
Power connection
Scale
connection
Not used in ZK830
Back panel for AC power only
Back panel for DC or AC Power

ZK830 Counting Scale User Instructions 13
2.4 Connections on the BSQ
Base mounted AC PSU
On the Base mount model the AC power supply unit (PSU) is attached by a bracket to
the back of the scale base. The DC output barrel jack plugs into the 12-36 VDC input
as shown in Figure 2.4.
Figure 2.4 AC power block
Plug the power cord into a properly grounded outlet, then into the receptacle in the
PSU. See Figure 2.5.
Figure 2.5 AC power connections

14 ZK830 Counting Scale User Instructions
Introduction
Battery power
The optional battery pack connects to the two battery connections as shown in Figure
2.6. The battery provides approximately 16 hours of operation before charging is
necessary.
Figure 2.6 Battery pack connections
When a 24-36 VDC power supply is plugged into the power connection on the back
panel of the ZK830, the green POWER light will turn on indicating power has been
applied to the BSQ base. The red CHARGING light will blink to indicate the battery is
charging. When the battery is fully charged the red CHARGING light will go out and the
power supply can be unplugged to work on battery power only.
The standby power button, pointed out in Figure 2.6, can be used to turn the ZK830
indicator on or off.
2.5 Leveling the scale
Place the scale on a level, stable surface free from vibrations or strong air currents.
Level the scale using adjustable feet and the bubble level located on the side of the
base. Turn the appropriate foot or feet until the bubble is centered and then lock the
feet in place by turning the locking collar snugly up against the scale body. See Figure
2.7.
Figure 2.7 Foot and locking collar
Standby power
button
For best accuracy we recommend you check that the scale is level prior to every use.
locking collar
leveling foot

ZK830 Counting Scale User Instructions 15
2.6 Numeric entry procedure (without optional keypad)
2.6 Numeric entry procedure (without optional keypad)
The keys in Figure 2.8 have alternate functions in numeric entry screens.
Figure 2.8 Key function during numeric entry
In numeric entry screens, the center segments shown in Figure 2.8 flash. Use the keys,
as described in Figure 2.8, to enter a value on the display. Following is an example:
Example: To key in the number 507:
Repeatedly press the TARE()or SELECT()key until 5appears on the display.
Press the UNITS()key once to move cursor one space to the right.
Repeatedly press the TARE()or SELECT()key until 0appears on the display.
Press the UNITS()key once to move cursor one space to the right.
Repeatedly press the TARE()or SELECT()key until 7appears on the display.
Press the ZERO key to enter or accept the value.
Press the PRINT()key to move the entry function one digit to the left. This effectively
deletes the current value in that position and allows you to enter a new value in that
position.
2.7 Numeric entry procedure (with optional keypad)
Use the optional numeric keypad to enter all numbers. Press the ZERO key to enter or
accept the value.
2.8 Printing
There are several default print formats that can be used but these are configured or
customized as part of the setup by a programmer or qualified service technician.
TARE /
SELECT /
PRINT /
UNITS /
ZERO /
F1 /
ESC
These segments flash in numeric entry mode
Press to increment the flashing number
Press to decrement the flashing number
Press to backspace cursor in a number
Press to advance cursor in a number
Press to accept a value
Press to escape an entry screen

16 ZK830 Counting Scale User Instructions
Indicator applications
3 Indicator applications
This indicator has three weighing applications that can be enabled through a password
protected menu. Only one application can be enabled at a time. The applications
available are:
lParts Counting (explained on page 16)
lGeneral Weighing (explained on page 22)
lCheckweighing (explained on page 26)
3.1 First time power up
Upon first time power up you are given the choice of which application you want to use.
APP appears on the screen. Press SELECT and use the UNITS or PRINT key to scroll
through the choices. When the application you want to use is displayed, press ZERO.
That application will become active. Press the TARE key to start the normal mode for
the chosen application.
A password protected menu is used to change the active application.
To display active application name
You can display the active application name by doing one of the following:
lPress and hold SAMPLE/F1 until the numeric entry screen appears. Press
SAMPLE/F1 again to display the current application name.
Or
lCycle power and the current application name is displayed briefly on power
up.
3.2 Counting application
This section applies if the Count application is active.
3.2.1 Sampling methods
Dribble sampling is the default sampling method. Bulk sampling is also available. This
is set in a password protected Supervisor menu. Each type is defined below.
Dribble sampling definition:
When sample parts are being added to the scale they can be counted out slowly or, in
other words, dribbled onto the scale. A key press (SAMPLE key) is needed to finish the
sampling process. The piece weight is calculated and the count is displayed.
Key functions in different applications may vary. These will be noted under each
application.

ZK830 Counting Scale User Instructions 17
3.2 Counting application
Bulk sampling definition:
When sample parts are being added to the scale they must all be placed on the scale
at once, in other words, in bulk. If the sample is large enough to meet the minimum
weight requirements the piece weight is calculated and the count is displayed with no
extra button presses.
3.2.2 Remote base switching (optional keypad required)
If you have an extra base installed with the BSQ (it can be analog or digital), you can
switch between the two by pressing the SCALE key. Either scale can be used to take
samples. If enabled you can sample on one base and the display automatically
switches to the other scale for counting. Either base can be selected as the sampling
base.
3.2.3 Entering known tare weights and piece weights (optional keypad
required)
If you know a tare or piece weight you can quickly enter those values using these steps:
Entering a known tare weight (only if optional keypad attached)
In gross weight mode (GROSS annunciator lit), key in a tare weight and press the
TARE key. The tare weight is active and the NET annunciator lights.
Entering a known piece weight
Key in a known piece weight and press the PCWT key. The piece weight becomes
active.
To view the current piece weight, press the PCWT key and the piece weight will be
shown for five seconds.
3.2.4 SELECT key default function
In the Count application you can view the gross, net, count and count total values by
repeatedly pressing SELECT.
At any time during the sampling process you can abort by pressing the TARE/up
arrow key.
To clear a tare weight, remove all weight from the scale and press the TARE key or
press and hold the TARE key for three seconds.

18 ZK830 Counting Scale User Instructions
Indicator applications
3.2.5 Special key functions
The following keys have an extra function in this application:
SAMPLE Press SAMPLE to perform the sample operation as described below in the
Sampling section.
PRINT Press the PRINT key to perform the print function and to add the count to
the accumulator, if enabled.
Press and hold the PRINT key to print the total print format chosen in the
password protected Supervisor menu.
3.2.6 Sample size
By default the sample size choices are 1, 2, 5, 10, 25, 50 or 100. When asked to add
samples, one of these will be the requested count. The default sample size is defined
in the password protected Supervisor menu.
Alternate sample sizes (only with optional keypad)
If you want to use a different sample size than the default ones, key in the quantity you
want to use (it must be larger than the default size) and press the SAMPLE key. The
display will show SAMPLinG briefly and then Add XX, where XX is the size you keyed
in.
3.2.7 Counting in dribble mode
With the count application in dribble mode active, follow these steps to count:
1. Press ZERO to zero the scale, if necessary.
2. Use a tare method to tare a container, if necessary. See Net weighing on page
22.
3. Press the SAMPLE key…
SAMPLinG is briefly displayed. This means the indicator is zeroing
itself. A message, Add XX, is then displayed. XX is the current sample
size.
4a. Place XX number of items on the scale.
OR
4b. Press the SELECT key repeatedly to scroll through other sample size choices
(1, 2, 5, 10, 25, 50 or 100). When your choice is displayed, place that number
of items on the scale and press SAMPLE …
buSY is briefly displayed, followed by one of three possible outcomes:
a. If the sample met the minimum sample requirements and the weight is
stable, the display will show the correct number of parts on the scale
and the COUNT annunciator is lit.
b If the sample weight was not enough, Add XXX will be displayed. Add
XXX parts and press the SAMPLE key.

ZK830 Counting Scale User Instructions 19
3.2 Counting application
c If the sample weight was not enough or if the weight was unstable,
tMout is briefly displayed and the display returns to gross weighing
mode. Repeat steps 3through 5using a larger sample size. The TARE
key can be used to abort the sampling process, if necessary.
5. Place the parts on the scale to be counted. If enabled you can accumulate the
count and number of transactions by pressing PRINT while in count mode.
6. If enabled, press and hold PRINT for three seconds to print and/or clear the
active count total. These functions are enabled or disabled in a password
protected menu.
3.2.8 Counting in bulk mode
With the count application in bulk mode active, follow these steps to count:
1. Press ZERO to zero the scale, if necessary.
2. Use a tare method to tare a container, if necessary. See Net weighing on page
22.
3. Press the SAMPLE key…
SAMPLinG is briefly displayed. This means the indicator is zeroing
itself. A message, Add XX, is then displayed. XX is the current sample
size.
4a. Place XX number of items on the scale.
OR
4b. Press the SELECT key repeatedly to scroll through other sample size choices
(1, 2, 5, 10, 25, 50 or 100). When your choice is displayed, place all the
sample on the scale at one time …
buSY is briefly displayed, followed by one of two possible outcomes:
a. If the sample met the minimum sample requirements and the weight is
stable, the display will show the correct number of parts on the scale
and the COUNT annunciator is lit.
OR
If you do not place a sample on the scale within five minutes of selecting the sample
size, the display will show tmout (timeout) and return to the gross weight screen.
Minimum sample weight is defined as 0.01% of capacity in dribble mode or 0.02% of
capacity for bulk mode.
Press SELECT to see the accumulated count total. The total is erased when a new
piece weight is established, a new PLU is selected or the if the ZK830 is powered off.

20 ZK830 Counting Scale User Instructions
Indicator applications
b If the sample size was not large enough or if the weight was unstable,
tMout is briefly displayed and the display returns to gross weighing
mode. Repeat steps 3through 5using a larger sample size. The TARE
key can be used to abort the sampling process, if necessary.
5. Place the parts on the scale to be counted. If enabled you can accumulate the
count and number of transactions by pressing PRINT while in count mode.
6. If enabled, press and hold PRINT for three seconds to print and/or clear the
active count total. These functions are enabled or disabled in a password
protected menu.
3.2.9 Using PLUs (optional keypad only)
PLUs (Part Look Up) are use to quickly recall up to 40 items’ tare and piece weights
using a number (1-40) and the PLU key. You can also enter the part number associated
with the PLU number. It must be a 3-7 digit part number. PLUs are entered into the
ZK830 through the password protected Supervisor menu.
To recall a PLU, key in the PLU number or the 3-7 digit part number and press PLU.
The stored piece weight, tare weight and units are now active.
Repeat this process for other PLUs.
Updating PLU stored tare and piece weights
If enabled in the password protected Supervisor menu, you can update the stored tare
weight for a PLU or a piece weight. With an active PLU, to update a either weight press
the PLU key and the current PLU number is displayed, press the PLU key twice and
uPdAting is briefly displayed. The new tare and/or piece weight is now stored.
If you do not place a sample on the scale within five minutes of selecting the sample
size, the display will show tmout (timeout) and return to the gross weight screen.
Minimum sample weight is defined as 0.01% of capacity in dribble mode or 0.02% of
capacity for bulk mode.
Press SELECT to see the accumulated count total. The total is erased when a new
piece weight is established, a new PLU is selected or the if the ZK830 is powered off.
CAUTION: Using a PLU assumes the individual piece weights are identical
between batches. If humidity or manufacturing tolerances can affect your parts
and you are unsure if piece weights are the same, you may get more accurate
counting if you do a new sample to get the latest piece weight.

ZK830 Counting Scale User Instructions 21
3.2 Counting application
Deactivating a PLU (optional keypad only)
To stop using a PLU’s values, press 0 and then PLU. The display will show PLU Off.
This will clear all the values being used for that PLU and will return the scale to gross
weight mode.
3.2.10 Check counting
You can fill boxes within a specific upper and lower count limit. The bar graph will show
when you are under/over or at the accept number. Or if you have the optional light
stack, the lights can alert you to the count status.
Upper and lower limits can be stored in each of the (1-40) PLUs or a supervisor can set
fixed upper and lower limits that are always active until a PLU is recalled. If the PLU is
canceled the fixed limits become active again. See the illustration below.
Under OverAccept