Avery Weigh-Tronix QC-3265 User Manual

QC-3265 Checkweigher
User ’s Manual

Risk of electrical shock. Do not remove cover. No user service­able parts inside. Refer servicing to qualified service personnel.

Weigh-Tronix reserves the right to change

10/05/01 3265_U.P65 PN 29600-0011J e1 Printed in USA

2

CAUTION

specifications at any time.

QC-3265 Checkweigher User’s Manual

Table of Contents

Table of Contents..........................................................................................3

Specifications ................................................................................................4

Introduction ...................................................................................................7

Front Panel....................................................................................................7

Keys ...................................................................................................8

Annunciators ......................................................................................8

Installation and Operation ............................................................................. 9

Installation ..........................................................................................9

Explanation of Modes of Operation ....................................................9

Operation as a Scale..........................................................................9

Gross Weight Checkweighing ..........................................................10

Net Weight Checkweighing .............................................................. 1 0

Changing the Acceptance Tolerance ...............................................11

User Menu...................................................................................................11

Communication ...........................................................................................13

Error Displays..............................................................................................13

Plastic Knob Installation for USDA Approved Applications .........................14

Pages are numbered consecutively beginning with the cover page.

QC-3265 Checkweigher User’s Manual

3

Specifications

Display

Light Emitting Diodes

A/D Conversion Rate

Internal Resolution

Excitation for Load Cells

Power Requirements

Battery Information

Accuracy

7 segment LCD, 6 digits, 0.7 inch high with 5 decimal points
7 segment LED, 6 digits, 0.6 inch high with 5 decimal points

8 LEDs for the following functions:

OVER - yellow ACCEPT - green UNDER - red
lb - red kg - red oz - red g - red

Center of Zero - green

60 Hz. Delta-Sigma type converter
4,718,592 counts per mV/V per second
Voltage : 6 volts DC (LCD), 10 volts DC (LED)

Available Current: 69 mA (four 350 ohm load cells) LCD

114 mA (four 350 ohm load cells) LED

*115 VAC +10% to -15% @ 0.10 Amp maximum
230 VAC +10% to -15% @ 0.05 Amp maximum
12 VDC (10 to 15 volts) @ 80 mA with 1 load cell

@ 131 mA with 4 load cells

Available for LCD version only. 30 Hour battery life. 14 hour recharge time. Low
battery warning. Low power shutoff.

Handbook 44 for 6,000 divisions (-10 to 40°C)

Charging can occur during AC operation.

LCD only

Linearity

Repeatability

Hystersis

Calibration and Programming

Display Rates

Filtering

Push Button Zero Range

Motion Detection Window

Automatic Zero Tracking

-10 to 40°C -30 to 60°C

Zero: ±.085 µV/°C ±0.17 µV/°C
Span: ±5.0 ppm/°C ±10 ppm/°C

(For scale base, 3000 divisions)
±0.005% of capacity, maximum (For base, ±0.01%)
±0.005% of capacity, maximum (For base, ±0.01%)

0.005% of capacity, maximum (For base, 0.01%)
All calibration and programming is done through the front panel with data

stored in nonvolatile memory.
1, 2, 5, or 10* times per second
1*, 2, 5, or 10 display intervals
±1%, ±2%, ±5%, ±10%, ±20%, ±50%, ±100%* of Capacity
d = 1 displayed division

±0.25 d, ±0.5 d, ±0.6 d, ±1 d*, ±2 d, ±3 d, ±5 d
d = 1 displayed division

Window: ±0.25 d, ±0.5 d, ±0.6 d*, ±1 d, ±2 d, ±3, ±5 d,
Rate: 0.1 division per second
Starting Delay: 2 seconds

Over Range Capacity

4

The scale displays weights up to capacity plus 9 divisions, referenced from
the zero value determined by zero setting point, or 105% of capacity,
referenced from the deadload.

* = default

QC-3265 Checkweigher User’s Manual

Under Range Capacity

The scale displays weights in the negative direction using the same restric­tions as for over-range, but further limited by the number of display digits
available.

Temperature Range

Humidity

Scale Capacity and Division

-10 to 40°C (14 to 104°F)

-30 to 60°C (-22 to 140°F) with reduced accuracy
Up to 100% relative humidity.

Pounds Ounces Kilograms Grams

6 x .002 100 x .05 3 x .001 3000 x 1
6 x .001 100 x .02 3 x .0005 3000 x .5

*12 x .005 200 x 0.1 6 x .002 6000 x 2

12 x .002 200 x 0.05 6 x .001 6000 x 1
30 x .01 480 x 0.2 15 x .005 15000 x 5
30 x .005 480 x 0.1 15 x .002 15000 x 2
60 x .02 960 x 0.5 30 x .01 30000 x 10

60 x .01 960 x 0.2 30 x .005 30000 x 5
100 x .05 1600 x 0.5 45 x .02 45000 x 20
100 x .02 1600 x 0.2 45 x .01 45000 x 10
200 x .1 3200 x 1 90 x .05 90000 x 50
200 x .05 3200 x .5 90 x .02 90000 x 20

* = default

Options

• LCD & LED versions

• 230 VAC 50/60 Hz power

• Tower mounted toggle switch for setting target weight and zeroing

• Battery and charger (available with LCD version only)

• RS-232 or RS-485 interface board

• Short and extended towers

• Remote head

• NTEP load cells

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QC-3265 Checkweigher User’s Manual

Introduction

This manual covers software
48307-0025B and newer on
the LED model of the QC­3265 and 48307-0017C and
newer on the LCD model.
These revisions contain the
LB-OZ capability which
previous versions did not
have.

Front Panel

The Quick Check QC-3265 Checkweigher is a low-cost, high-speed produc­tion checkweigher housed in stainless steel for harsh, washdown environ­ments. This manual is divided into the following sections:

• Introduction

• Front Panel

• Operation

• User Menu

If you have any problems with your QC-3265 Checkweigher, call your local
Weigh-Tronix distributor.

Figure 1 shows the front panel. The panel consists of the following:

• a six-digit, liquid crystal or LED display

• five keys;
QUICK CHECK

TARGET

UNITS

ZERO

(Right arrow key)

• a center of zero annunciator

• four unit of measure annunciators; lb, kg, oz, g

• three checkweigher annunciators; OVER, ACCEPT, UNDER

Figure 1

QC-3265 Front Panel

QC-3265 Checkweigher User’s Manual

7

Keys

If for some reason the QC­3265 cannot perform a key
function (due to motion, range
limits, and others) the display
will show CAN'T while the key
is held down.

Following are the keys and their functions.

Press this key to toggle between checkweigh mode and
weight display mode, assuming you have an active target
weight. Use the QUICK CHECK key to return to the
weight display and checkweigh modes from anywhere in
the menus. Press this key to accept a displayed selection
and return to a display mode.

Use the up arrow-TARGET key to set the target weight.
With no weight on the scale, press this key to remove a
target weight and enter the weight display mode. With a
weight on the scale, press this key set the target weight
and to enter the Checkweigh mode from the weight
display mode. Also, press this key to move up in the
menus. You can also set the target weight by flipping the
optional, column mounted toggle switch up.

Use the left arrow-UNITS key to change the unit of
measure in weight display mode and checkweigh mode.
This key works only if more than one unit of measure is
enabled. Use this key to move to the left in the menus.

Key names are abbreviated in
many of the instructions of this
manual. Instead of saying the
up arrow-TARGET key every
time it is shortened to this
symbol ^.

^ = up arrow key
v = down arrow key
< = left arrow key
> = right arrow key

Annunciators

Use the ZERO-down arrow key to zero the scale while in
either display mode. In the A/D test mode this key sets the
offset to zero. Use this key to move down in the menu
hierarchy. With a selection displayed, press this key to
select that item and go up one menu level. You can also
zero the scale by flipping the optional, column mounted
toggle switch down.

Use the right arrow key to move to the right in the menus.

The OVER, ACCEPT, and UNDER annunciators are to the right of the
display and are shown below. The OVER light is yellow, the ACCEPT light is
green and the UNDER light is red.

Target weight and the toler­ances are saved in nonvolatile
memory. They are not lost
when the unit is powered
down.

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QC-3265 Checkweigher User’s Manual

The unit of measure annunciators are below the display and are reproduced

The lb and oz annunciators will
be lit when you are in the LB­OZ unit of measure. Two
numbers are displayed sepa­rated by a space in LB-OZ.
The left number is the number
of pounds and the right is the
ounces to the correct division
size.

below. The lit annunciator tells you the currently selected unit of measure­ment.

The center of zero annunciator, reproduced below, is next to the ZERO key.
When the annunciator is lit the scale is within ¼ division of zero.

Installation and Operation

Installation

There is no ON/OFF switch.
When the unit is plugged in it
will power up. If the battery
option is installed and enabled,
press any key to start.

Explanation of Modes
of Operation

Place the QC-3265 on a stable, level surface.
Use the leveling feet to level the scale. A bubble level is visible under the

scale platform shroud. Lock the feet in this position using the locknuts on the
feet.

Plug the unit into a properly grounded 115VAC outlet.

The socket-outlet must be installed near

the equipment and easily accessible.

There are two modes of operation for the QC-3265, the weight display mode
and the checkweigh mode.

• Use the weight display mode when you want to use the scale for
displaying weight. The scale powers up in weight display mode if there
is no target weight in memory.

• Use the checkweigh mode for checkweighing operations and the use
of the OVER, ACCEPT, and UNDER LEDs. If there is a target weight
in memory, the scale will power up in the checkweigh mode. Below are
explanations of the operation in each mode.

Operation as a Scale

Press the UNITS key to view a
weight in a different unit of
measure.

With the scale in weight display mode, follow these steps to perform a
weighment:

1. Press the ZERO key to zero the
scale. . . Display shows 0 weight.

2. Place the object to be weighed on
the scale. . . The weight is displayed.

QC-3265 Checkweigher User’s Manual

9

Gross Weight
Checkweighing

To use the QC-3265 as a checkweigher for gross weight, follow the direc­tions given below:

1. Zero the scale by pressing the
ZERO key or flip the optional
toggle switch down. . . Display shows 0 weight.

In gross mode, the indicator
will always represent negative
weight with a leading minus
sign. If the weight becomes too
large, positive or negative,
overscores or underscores will
be displayed while the condi­tion persists.

Changing the
Acceptance Tolerance

Over and Under tolerance can
be set from the User menu or
the Setup menu (see Service
Manual) but not both. The
choice where the tolerances
appear is made in the Setup
menu. The tolerances will not
appear in the User menu if they
appear in the Setup menu and
vice versa.

2. Place a test weight on the scale
equal to the gross weight of the
package. . . The gross weight is displayed.

3. Press the TARGET key or flip
the optional toggle switch up. . . The display shows 0 weight and the

ACCEPT LED illuminates.

4. Remove the test weight and
place a package on the scale. . . The display will show the weight

deviation from the target weight and
the OVER, ACCEPT, or UNDER
LED will illuminate accordingly.

IMPORTANT NOTE: If you use the ZERO key to tare a container weight
and use the checkweigher in net weighing mode, the unit will track zero
whenever there is an empty container on the scale. If the scale is left idle
while empty, zero drift may occur.

1. Press the > key. . . OVER is displayed.

2. Press the v key. .. o 0.5 is an example of what might

be displayed. o stands for over
tolerance and the value is the
current over tolerance. The actual
value depends on the unit of mea­sure and division size. The over LED
is lit.

3. Press the < key to decrease the
value and the > key to increase
the tolerance value. Press the v
key to accept the displayed value. OVER is displayed.

If you change the tolerance but
decide you would rather keep
the original value, press the ^
key in step 2 to return to OVER
without accepting the displayed
value.

Target weight and the toler­ances are saved in nonvolatile
memory. They are not lost
when the unit is powered
down.

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4. Press the > key. . . UNDER is displayed.

5. Press the v key. . . u 0.5 is an example of what might

6. Repeat step 3 and press the

be displayed. u stands for under
tolerance and the value is the
current under tolerance. The under
LED is lit.

QUICK CHECK key to return to
the checkweigh or display mode.

QC-3265 Checkweigher User’s Manual

User Menu

Move to the right by pressing the > key
Move down by pressing the v key
Move left by pressing the < key
Move up by pressing the ^ key.

Without realizing it you have learned how to access the User menu. When
you press the > key from either the checkweighing (deviation display) or the
weighing (weight display) mode you access the User menu shown below.

Figure 2

User Menu

You have already learned about UNDER and OVER tolerance. The other
items in this menu are described below.

OFF This item appears only if battery power mode is enabled in setup,

With OFF displayed, press the v key to turn off the QC-3265.
Pressing any key turns the unit on in weight display mode. Battery
power is not an option with QC-3265s equipped with an LED
weight display.

ABOUT Press the v key with ABOUT displayed and QC3265 will be

displayed. Press the > key to step through the EPROM part
number, dash number, revision letter, and then back to QC3265.
Press the ^ key to go back to the ABOUT display.

TEST Press the v key with TEST displayed to access the test menu

shown in Figure 3. Use the v, ^, <, and > keys as before to move
through the menu.

AUDIT Lets you see the CA (calibration) audit number and the

CF (configuration) audit number.

DISP. Press the v key twice to perform a display segment

test. Press the < or > key to change the direction of the
test. Press the ^ key twice to stop the test and return
to DISP.

QC-3265 Checkweigher User’s Manual

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BUTTON Lets you check the function of each key. Figure 3

shows you what will be displayed as you press each
key.

VOLTS Shows you the current input voltage going into the

voltage regulator.

A to D Shows the output of the A to D converter with a

sensitivity of 20,000 counts per millivolt per volt.

SERIAL Lets you perform READY/BUSY and LOOP/NOLOOP

tests to check the serial port. READY/BUSY not
available unless RS-232 has been selected during
setup.

SETUP This is a password protected menu and is used for basic setup

and configuration of the unit. See the Service Manual for details.

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Figure 3

Test Menu

QC-3265 Checkweigher User’s Manual

Communication

Error Displays

The QC-3265 has an optional RS-232 or RS-485 communication capability.
Your unit may be customized to print according to your needs. Examples of
the default print layout are shown below:

30.01 lb G or 0.01 kg DEV

What is transmitted is the weight or deviation, one space, the unit of mea­sure, one space, and a label for the weight (G for gross, DEV for deviation).

Your unit may be set up to send data continuously, after each weighment (if
a 30 division movement has occurred), or upon request from a computer.

The following are displays you may see if problems occur or if invalid
operations are attempted with your QC-3265:

Display Description

Overrange weight.

Underrange weight.

Recovering from lock-up or out of range condition.

A-D converter is not functioning.

A-D converter subjected to an input signal beyond
±6.66667 mV/V

The unit cannot perform a function. Displayed only while
key is held down.

Corrupted data in the reset menus. See Reset Menus.
(* = RESET, SETUP, or CAL)

A low input voltage is detected. This appears when voltage
level reaches 10.5 volts and alternates with the normal
display. The unit will shut itself off at 9.2 volts. Only
available on battery powered units.

QC-3265 Checkweigher User’s Manual

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Low voltage on the LED version.

Displayed while a key is pressed when attempting to
modify a sealed selection without edit privileges.

Scale unstable at power up.

Serial port handshake not responding.

Plastic Knob Installation for USDA Approved Applications

Below are the instructions and illustration for installing the plastic knobs
which are necessary for USDA approved installations.

Install knobs by

• Removing the two 10-32 hexhead screws accompanying the unit.

• Replace with knobs.

• Use supplied Belleville washers between knob and mounting surface.

• Install the washer with the major diameter bearing against mounting

surface.

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Figure 4

Plastic knob installation

QC-3265 Checkweigher User’s Manual

Weigh-Tronix

1000 Armstrong Dr.
Fairmont, MN 56031 USA
Telephone: [phone]
Facsimile: 507-238-4195
e-mail: [e-mail]
www.wtxweb.com

Weigh-Tronix Canada, ULC

217 Brunswick Blvd.
Pointe Claire, QC H9R 4R7 Canada
Telephone: [phone]
Facsimile: 514-695-6820

Weigh Bar® is a registered trademark of Weigh-Tronix Inc.

Weighing Products & Systems