Avery Weigh-Tronix WI-150 User manual

WI-150 Ultra Low-Power
Weight Indicator
Service Manual

All Weigh-Tronix products bearing the Factory
Mutual seal are designed and manufactured ac-
cording to the guidelines set forth by Factory Mu-
tual Research. It is the responsibility of the owners
to gain approval from their insurance companies
for the suitability of the Weigh-Tronix equipment
and installation for their particular environment
and use of the product.
Weigh-Tronix warrants that the equipment deliv-
eredbyitwillbeofthekindandqualitydescribedin
the order or contract and will be free of defects in
workmanship and material. Should any failure to
conformtothiswarrantyappearintwoyears,Weigh-
Tronix shall, at its option, either repair or replace
any defective part.
This warranty is in lieu of all warranties of
merchantibility, fitness for particular purpose, or
any other warranties, express or implied. Weigh-
Tronix shall not be liable for special, indirect, inci-
dental,orconsequentialdamages. Theremediesset
forthaboveareexclusive,andtheliabilityofWeigh-
Tronixshallnotexceedthepriceoftheequipmentor
part.

Introduction .......................................................................................................................1
Operational Modes............................................................................................................1
Operations Mode...................................................................................................1
Test Mode .............................................................................................................1
Configuration Mode...............................................................................................1
Sealing the Indicator .........................................................................................................2
Keyboard...........................................................................................................................2
Configuration Mode...........................................................................................................4
Layout..................................................................................................................10
Customizing the Layout Menu.............................................................................11
ASCII Strings.......................................................................................................11
Examples & Step by Step Instructions................................................................13
Adjusting Dead Load.......................................................................................................17
Calibration Procedures....................................................................................................18
To Enter the Configuration Mode:.......................................................................18
Setting ZERO and SPAN ....................................................................................19
Setting LINEAR. ..................................................................................................19
DISPLAY .............................................................................................................19
Reset Menu and Master Clear ........................................................................................20
Master Clear Menu..............................................................................................20
Reset Menu .........................................................................................................21
Disassembly and Reassembly........................................................................................22
Indicator Parts and Assembly .........................................................................................25
Cable to PC Board Connection.......................................................................................26
System Block Diagram....................................................................................................27
PC Board Identification ...................................................................................................29
BP-150 Battery Pack and Charger Parts and Assembly ...............................................31
PS-150 Power Supply 115VAC/230VAC Parts & Assy ..................................................32
PS-150XP Power Supply Main Board Parts and Assembly ...........................................33
SC-150 Remote Control Parts & Assembly ....................................................................34
SC-150 Option Board/Main Board ..................................................................................35
SC-150 Remote Control PC Board Identification ...........................................................36
SC-150 System Block Diagram ......................................................................................37
Fiber-Link Enclosure Outling Dimensions and PC Boards .............................................39
WI-150 Keypad and Schematic ......................................................................................42
Table of Contents

1
Introduction
Operational Modes
This service manual will help you prepare your WI-150 indicator for use.
This manual covers the following:
• Introduction
• Operational Modes
• Sealing the Indicator
• Keyboard
• Configuration Mode
• Adjusting Dead Load
• Calibration Procedures
• Reset Menu and Master Clear
• Board Schematics and Parts Lists
The WI-150 operates in three modes:
• operations mode
• test mode
• configuration mode
Operations mode contains all normal weighing operations. In this mode you
can view or set any of the following parameters if the unit is so configured:
• cutoff control
• pushbutton tare
• one to ten keyboard tare registers
• one to eight cutoff values
• identification number
• time
• date
Any combination of these items can be secured behind a security code. Any
items secured by the code number can be viewed but not changed. Opera-
tions mode is fully explained in the User's Manual .
Use this mode to perform tests on the WI-150. The test mode is covered in
the User's Manual .
Use this mode to set up options and program the operation of the scale and
indicator. Configuration is explained fully in the Configuration Mode section
of this manual.
Operations Mode
Test Mode
Configuration Mode

2
Keyboard
Figure 1
WI-150 Keyboard
Places the battery-powered version in sleep mode. Is not
functional in the AC/DC powered version.
Wakes the battery-powered version from sleep mode. Is not
functional in the AC/DC powered version.
Zeros the scale in gross/net weigh mode. This button also
clears keyed in digits on the display before they are accepted.
Changes the unit of measure during operations mode and
inserts a decimal point (.) when keying in values.
Sealing the Indicator
The WI-150 can be sealed. If sealed, no configuration items can be changed
in the configuration menu. Seal the unit by placing switch S1-1 in the OFF
position. Unseal the unit by placing S1-1 in the
ON position. Remove the front panel of the
indicator to gain access to switch S1-1. The
switch is located near the center of the PC
board behind the display and looks like the
diagram at right. S1-3 and S1-4, which connect
the
WI-150's ON/OFF keys to the appropriate
circuitry, should always be in the ON position to
allow optimal functioning of the indicator. S1-2
is not functional.
OFF
ON
ZERO
CLEARCLEAR
CLEARCLEAR
CLEAR
.
UNITS

3
Enters numbers and specifies tare
registers and cutoff values.
Used to access menus and move among choices in a menu.
Sends a print command and is used to select menu items.
Enters a pushbutton tare in gross/net operation. During data
entry this key is used to toggle between positive and negative
values. Used to enter a dash (-) in ID numbers.
Accesses the gross/net weighing mode from any other function
and toggles the unit between gross and net weights, assuming
there is an active tare weight.
TARE
+/-
00
00
099
99
9keypadto
MENU
SELECT
PRINT
GROSS
NET

4
Configuration Mode
This section of the manual explains how to set up and view parameters in the configuration mode for software
revisions 45790-0025J (battery pack) and 45790-0017L (AC-powered). Note that earlier software may not have all of
these programming selections. Follow the configuration menu and instructions in Figure 2 to set up the WI-150
indicator to suit your specific needs. Below are explanations for each section of the menu. The non-bold heading for
each section is the pathway you follow on the configuration menu to get to the parameter or parameter options
shown in bold text. The menu reflects a WI-150 model with time and date and other options installed and enabled.
Your system may differ.
Sidestepping Security Code Entry to Configuration
In case you forget the security code or the security code is altered without your knowledge, access
the configuration menu as follows: First, flip switch S1-1 to the OFF position (sealed). Next, enter
the default code number, 150. Get into the configuration menu as instructed in the key to Figure 2.
When
CODE NO. is displayed in the menu, flip switch S1-1 from OFF to the ON position. Under-
stand that opening the indicator to access the switch effectively unseals the indicator! Then enter a
new code number—twice, as the display prompts. Now you have complete access to the configura-
tion menu.
SC-150 This parameter allows you enable or disable the SC-150. The default setting is “no.”
Setup ↓Scale ↓Units ↓
Pounds →→
→→
→1000g →→
→→
→Gallons
Under each unit of measure you have the option of selecting ON or OFF. Choosing the OFF option under a
unit of measure disables that unit of measure. If a unit is disabled, it will not appear in the configuration menu
under CAPACITY or DIVISION nor will you be able to choose it during weighing procedures. Also, if gallons
is disabled, DENSITY will not appear in the configuration menu.
Setup ↓Scale ↓Units →Capacity ↓
Pounds →→
→→
→1000g →→
→→
→Gallons
This menu section lets you set the scale capacity for those units of measure enabled under UNITS . Capacity
is automatically converted--entering the capacity for either lbs or kgs automatically sets the capacity of the
other unit.
Capacity for gallons is determined according to density and cannot be entered since it is a function of weight,
not volume. Density is the weight of your material calculated in grams per cubic centimeter. Consult an
Engineering Handbook for the density of your material. If a liquid you are weighing has a specific gravity of
1.5, for example, you take 1.5 times 8.336 to find out how much each gallon of your liquid weighs.
Setup ↓Scale ↓Units →Capacity →Division ↓
Pounds →→
→→
→1000g →→
→→
→Gallons
This option lets you set the division size for the units of measure enabled under UNITS . Division size is
automatically converted--entering division size for either lbs or kgs automatically sets the division size for the
other. Division size for gallons is independent.
One feature not readily apparent is that the number of displayed leading zeros can be specified. For example:
for 10 pound divisions, if you want 5 zeros displayed when no weight is on the scale, key in 00010 for a
division size. The display will read 00000 when the scale is empty. If you want two zeros displayed when the
scale is empty, key in a division size of 10.

5
Setup ↓Scale ↓Units →Capacity →Division →
DensityThis option lets you set the density of the liquid you are weighing in grams per cubic centimeter. Your scale
will then convert the weight of the liquid into gallons. (Specific gravity is identical to density as expressed in
grams per cubic centimeter.)
Setup ↓Scale ↓Units →Capacity →Division →Density →Zero ↓
-Percent,Percent
With this option you can set the plus and minus percent of capacity the indicator can zero. For example, if the
capacity of the scale is 10000 lb and the zero range is ±2%, key in 2 for both the positive and negative
ranges. You may key in decimal values.
Setup ↓Scale ↓Units →Capacity →Division →Density →Zero →
Stability
This option lets you set the size of the motion detection window in divisions. You may enter decimal values
less than one or up to 999999 which turns off the motion detection.
Setup ↓Scale ↓Units →Capacity →Division →Density →Zero →Stability →A.Z.T. ↓
Range,Net
Range - With this option you can set the ±automatic zero tracking window in scale divisions. To turn off AZT,
enter a range of 0.
Net - If an AZT range is set, NET will appear in the menu. This option lets you choose to enable AZT during
net weighing operations ( ON ) or disable it ( OFF ). The gross weight must be zero for AZT to work in net
mode.
Setup ↓Scale ↓Units →Capacity →Division →Density →Zero →Stability →A.Z.T. →
Update This option sets the display update rate. You may choose from among 1, 2 or 5 times per second.
Setup ↓Scale ↓Units →Capacity →Division →Density →Zero →Stability →A.Z.T. →Update →
Average
This option allows you to choose the number of display period(s) over which the data are internally averaged
prior to being displayed. Any number between 1 and 10 may be entered.
Setup ↓Scale →Options ↓
ControlChoosing
ON enables the cutoff control function. OFF disables this function. If cutoff control is disabled,
CONTROL will not appear in the SECURITY section of this menu or in the Operations Menu. Note, however,
that for CONTROL to appear in the Operations Menu, the number of outputs selected under CUTOFFS in the
OPTIONS section of this menu must be a non-zero value.
Setup ↓Scale →Options ↓Control →Tare ↓
Button,Digital
Button -Choosing ON enables the pushbutton tare. Choosing OFF disables the pushbutton tare.
Digital - Select the number of tare registers you want by keying in a number. You can choose 0 through 10
tare registers.
If pushbutton tare is disabled and 0 tare registers are selected, TARE will not appear in the operations menu
or in the SECURITY section of this menu.

6
Figure 2
Configuration Menu

7
Key:
*
Available only when
SC-150 is enabled
Default values