Avery Weigh-Tronix TT-830 User manual

TT-830 Bench Scale

Service Manual

2TT-830 Bench Scale Service Manual

TT-830 Bench Scale Service Manual

Table of Contents

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

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

Introduction ............................................................................................... 5

About This Manual ...............................................................................5

Front Panel Keys and Functions...............................................................5

Hard Keys............................................................................................. 5

Soft Keys.............................................................................................. 6

Accessing Setup Levels............................................................................7

User level .............................................................................................8

Configure level ...................................................................................13

Calibrate level..................................................................................... 23

Test Menu............................................................................................... 25

Disassembly and Reassembly Instructions ............................................27

To Remove the PC Board ..................................................................27

To Remove the Weight Sensor ..........................................................27

To Remove the Display ......................................................................27

Reassembly........................................................................................ 27

Appendix 1: Display Samples ................................................................. 28

Appendix 2: Tips on Using Harmonizer ..................................................30

Technical Illustrations:

10 lb/ 5 kg Parts and Assembly .............................................................. 31

Draft Shield Parts and Assembly ............................................................32

50 lb / 25 kg and 100 lb / 50 kg Parts and Assembly..............................33

System Wiring Block Diagram ................................................................34

Main Computer & I/O, Remote Analog,

Internal Battery Charger PC Boards...................................................35

Display & Interface Bd., Display Assy., Keypad Assy.............................36

Internal Battery & Charger PC Bd Parts and Assembly..........................37

Dimensional Outline for 12" x 14" Base..................................................38

COM2 Interface Cable Options and Pin-outs..........................................39

COM 1 Interface Cables, 830 to Quartzell Base and

830 to Eltron Printer Cable Assemblies..............................................40

BP-25R External Battery.........................................................................41

SSCU Parts and Assembly.....................................................................43

SSCU-8 Remote Expanded Control I/O Board....................................... 44

SSCU External (16) I/O Cutoff Expansion Board....................................45

OPTO-22 Control Interface Devices .......................................................46

Wiring Diagram for Input and Output Modules .......................................47

Remote (TTL) Keyboard Options............................................................48

4TT-830 Bench Scale Service Manual

Power Input

Operational Keys

Operational Annunciators

Display

Display rate

A to D Conversion Rate

Unit of Measure

Capacity Selections

Incremental Selections

Displayed Resolution

Audio Output

Time and Date

Internal Resolution

Harmonizer™digital filtering:

Standard input and outputs:

Available Options

Operating Temperatures

Dimensions

Weight

Agencies

Warranty

115 Volts AC, 50/60 Hz single phase

Optional 230 Volts AC, 50/60 Hz single phase

Zero, Tare, Print, Units, Select, Enter, Escape, Clear, 0-9,

Decimal Point and Five Soft Keys labeled per selected operational routine.

Displayed symbols indicate motion, center of zero, unit of measure and more.

5" W x 1.33" H dot matrix LCD, cold cathode flourescent backlight (240 X 64

dot layout)

Selectable, 0.1 to maximum readable updates

60 times per second

Pounds, kilograms, grams, ounces, pounds and ounces and two selectable

custom units

10 (5); 50 (25); 100 (50); lbs (kg)

Multiples and sub multiples of 1, 2, 5

NTEP pending at 10,000d / configurable

Audio tone for key contact assurance or operational alarms

Battery protected real time clock is standard

1,000,000 counts analog, QuartzellTM transducer = 2,000,000

Fully programmable to ignore noise and vibration

Four communications choices:

Com 1: RS232, RS-485/422

Com 2: RS232, 20 mA current loop

(One bi-directional signal per port)

- DC operation at 10 to 32 VDC, 3.5 Amp

- OPTO 22 I/O Modules

- Remote Expanded Control Interface for 8, 16, 24, or 32 OPTO 22 I/O Mod-

ules

- Alpha-numeric, PC style serial keyboard

14 to 104° F (-10 to 40° C), 10 to 90% relative humidity

Platform: 12" x 14" (50- and 100-lb models)

Platform: 8.5" dia. (10-lb models)

Overall: 14" W x 17" D x 4.5" H (35.6cm W x 43.2cm D x 11.4cm H)

18.5 lb, 8.4 kg

UL/CUL pending

CE pending

NTEP pending

2 year

Specifications

TT-830 Bench Scale Service Manual

Introduction

Front Panel Keys and Functions

This manual covers the information you need to configure and service your

TT-830 bench scale.

Major sections of this manual are headed by titles in a black bar like Intro-

duction above. Subheadings appear in the left column. Instructions and text

appear on the right side of the page. Occasionally notes, tips, and special

instructions appear in the left column.

The front panel is shown in Figure 1.

About This Manual

Plug the TT-830 into an easily

accessible grounded outlet

only. Never use the unit without

an appropriate earthground

connection. The keys on the front panel of the TT-830 are of two types; hard keys and

soft keys. Hard keys are labeled directly and soft key labels appear on the

display. Soft keys function differently at different times so their labels change

as needed.

Below are brief descriptions for each of the hard key functions:

Repeatedly press the SELECT key to scroll through the

available weight reading displays. (Examples - gross, net,

tare, minimum, maximum, etc.)

Press the UNITS key to scroll through the available units

of measure

Press the PRINT key to send data to a connected printer.

Figure 1

TT-830 Front Panel

Hard Keys

Press any key to power up the

scale.

6TT-830 Bench Scale Service Manual

Press the TARE key to enter a tare weight, then press

SELECT to see the net display mode.

Press the ZERO key to establish a zero reference. A

center-of-zero icon will be displayed. During motion an M

will appear below the center-of-zero icon.

Press the ESCAPE key to back out of menus or cancel a

numeric entry without accepting the value.

Press the CLEAR to clear values from the display.

Press the ENTER key to enter a keyed in value or accept

a displayed choice.

Press and hold the ON/OFF key for five seconds to turn

the unit off. Press any key to power up the scale.

The numeric keypad is for entering numbers.

Soft keys are so-called because their function is not fixed. Function can

change as the mode of operation changes or as the program for your

particular setup changes.

Their are five soft keys located directly below the display. If the keys are

needed during any operation, a label for each active key appears in the

display directly above. There are only five key labels available at one time

but this does not limit the potential usefulness of these keys. Programs can

be created to enable one key to access another level of operation with five

more key names and functions.

Soft Keys

TT-830 Bench Scale Service Manual

There are three levels of TT-830 setup you can access through the front

panel:

User level

The first level is the User level. These are the most commonly

changed values and parameters that you will use in the course of

operating the TT-830.

Configuration level

The second level is the Configuration level. These items deal with

some of the basic functions of the TT-830 and do not need to be

accessed very often.

Calibration level

The third level is the Calibration level. This section will need to be

accessed only when the scale is being calibrated, or if you change

scale capacity or division size.

A different password is needed to access each level. Once you access the

level you want, the display presents a series of soft key choices. By pressing

the appropriate soft key and following text prompts on the display, you can

set up your TT-830 to suit your needs.

Following are the instructions you need to access the setup of the TT-830.

1. Press and hold the ESCAPE key

until the TT-830 beeps. . . The display asks for a password and

looks like Figure 2.

Figure 2

Password display

Below are the passwords and details for the three setup levels.

Accessing Setup Levels

You must key in the password

within 5 seconds of accessing

the password screen or the TT-

830 returns to normal opera-

tion.

IMPORTANT NOTE

The TT-830 can be sealed for

legal for trade use and the

software protected from

change by using switch S1.

The current status is viewed in

the USER menu.

8TT-830 Bench Scale Service Manual

The default User password is 111.

Key in 111 and press ENTER. . . the screen in Figure 3 is displayed.

Figure3

User level main display

Figure 4 shows what soft keys or choices appear as you press the soft keys

shown in Figure 3.

Figure 4

Soft keys in the User level

User level

The values under SELECT in

the flowchart to the right are

not saved after a power down

and power up.

The User level is not affected

by the Seal status of the scale.

TT-830 Bench Scale Service Manual

Press the CLOCK soft key to access the time and date setting function.

1. The display shows the current

hour value. If this is not correct

key in a new value and press

ENTER or press ENTER to

accept the current value. . . The display shows the minutes

value.

2. Repeat step 1 for minutes,

seconds, year, month, and

day. . . Display returns to display shown in

Figure 3.

Press the SELECT soft key to access the USER-SELECT soft key group:

• DISP Press this key to set the current display mode.

• SCALE Press this key to select the scale number you want to use.

• TARE Press this key to enter a known tare weight.

• UNIT Press this key to select the active units of measure.

• EXIT Press this key to go back to the previous soft key set.

Following is a detailed description of the four functions listed above.

If you press the DISP soft key, follow these instructions:

1. The display shows the current

display mode number. Press

ENTER to accept this value or

key in a new number from the list

in Appendix 1, then press

ENTER to accept it. The display asks for the ACTIVE

VALUE. This is the active display

value.

2. Choose one of the following

active display values by keying in

0-13, then press ENTER. . . The display returns to the USER-

SELECT screen.

0 = Gross 4 = Max 8 = Count Total 12 = Piece Weight

1 = net 5 = Rate of Change 9 = Trans Total 13 = ADC

2 = Tare 6 = Gross Total 10 =Count

3 = Min 7 = Net Total 11 = Variable

If you press the SCALE soft key the display will ask you to select a scale

number. The currently active scale number is displayed. You can simply

type a new scale number and press the ENTER key. If you have multiple

scales attached to the indicator, this function chooses which scale's weight

is displayed and which one the ZERO and TARE keys will affect.

USER-CLOCK level

Enter the year using all four

digits.

USER-SELECT level

The display mode you pick

may not be the one that

appears on the display. A

display mode called out in the

WT BASIC program overrides

the setting you make through

the front panel.

While in the this level the

display will show USER-

SELECT in the top left to

remind you of where you are in

the USER level.

Variable (#11) is a variable

value called out in a WT-BASIC

program. ADC (#13) stands for

Analog to Digital Counts.

DISP (Display Mode)

SCALE

You cannot select a scale

number unless it has been

activated in the SimPoser

program and downloaded to

the TT-830.

10 TT-830 Bench Scale Service Manual

If you press the TARE soft key the display will show the current tare value

for the active scale. You may key in a new tare weight and press the ENTER

key to override the previous tare weight.

If you press the UNIT soft key the display will ask you to key in a number (0-

6) which represents the value you want to be active. Below are the seven

units to choose from and the corresponding number you need to key in for

this function:

0- lb 4- lb oz

1- kg 5- custom 1

2- g 6- custom 2

3- oz

Press the EXIT soft key to return to the USER level soft key group.

Press the SET soft key to access the USER-SET soft key group shown

below:

• GRAPH Press this key to set the parameters for bar graph and

checkweighing functions.

• PEAKS Press this key to reset the Min/Max.

• ACCUM Press this key to set the accumulator totals.

• PCWT Press this key to set the pieceweight for counting func-

tions.

• EXIT Press this key to go back to the previous soft key set.

Following is a detailed description of the four functions listed above.

If you press the GRAPH soft key, follow these instructions:

1. The current MIN setting is

displayed. Press ENTER to

accept this value or key in a new

value and press ENTER. . . The UNDER value is displayed.

2. Repeat step one, accept or

change the value, for UNDER,

OVER, MAX, and BASIS values.

BASIS is same as the active

values (0-13) shown below. These values now apply when using

the bar graph or checkweighing

display.

0 = Gross 4 = Max 8 = Count Total 12 = Piece Weight

1 = net 5 = Rate of Change 9 = Trans Total 13 = ADC

2 = Tare 6 = Gross Total 10 = Count

3 = Min 7 = Net Total 11 = Variable

USER-SET Level

Variable (#11) is a variable

value called out in a WT-

BASIC program. ADC (#13)

stands for Analog to Digital

Counts.

TARE

UNIT

GRAPH

The display will ask for a scale

number if Multiscale is enabled.

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