Digi-Star EZ 320 User Manual

The "EZ 320" Electronic Scale Indicator

Operation & Installation Manual

FEATURES: The "EZ 320" Model has enhanced features such as:

- Scrolling Help Messages for EZ recipe programming & operation.

- Up to 81 different batching recipes.

- Three recipe programming modes - Percent of total, Pounds per animal, or Pounds
per Ingredient.

- Ingredients can be entered in any order.

- Large 1 inch alpha-numeric display for greater readability.

- Front Panel Calibration without simulator or weights.

- Fiber-optic backlighting for extremely long life.

- Optional European Compliance ( mark) for use in the European Community

OPERATING SPECIFICATIONS:

Accuracy ......................... 0.1% with System Accuracy depending on load cells used

Temperature Range ............................................. -20 to 140 degrees F

Power Requirements .................................................10½ - 16 VDC

DIGI-STAR

790 WEST ROCKWELL AVENUE

FORT ATKINSON, WISCONSIN 53538

PHONE [phone]

TECHNICAL SERVICE [phone]

F3287 Rev. B 9/96 © 1992-96 DIGI-STAR Printed in U.S.A.

Table of Contents

MODEL 320 - System Operation: ........................................ 1

Turning ON the Scale: ............................................. 1

Turning OFF the Scale: ............................................ 1

To Zero-Balance the Scale: ........................................ 1

Using the Help Key: .............................................. 2

To Select Gross Mode: ............................................ 2

To Select Net Mode: .............................................. 2

To Enter a Preset: ................................................ 3

"GROSS MODE" ................................................ 3

"LOAD/UNLOAD MODE" .......................................... 3

"NET MODE" ................................................... 3

To Clear the Preset Alarm: ......................................... 4

To Preload a Tare Value: .......................................... 4

Using the Pre-Alarm: .............................................. 5

Changing Pre-Alarm Weight: ..................................... 5

To Start the Mix Timer: ............................................ 6

To Clear the Mix Timer: ............................................ 6

To Re-Start the Mix Timer: ......................................... 6

Entry Methods: .................................................. 7

To Change the Entry Method: .................................... 7

To Program a New Recipe: ........................................ 12

To Edit a Recipe: ................................................ 13

To Erase a Recipe: .............................................. 14

Using the Auto Advance Feature: ................................... 15

Using Tolerance: ............................................. 15

To Change the Tolerance: ...................................... 15

Using Delay Time: ............................................ 16

To Change the Delay Time: ..................................... 16

To Load a Batch Using a Recipe: ................................... 17

MODEL 320 - Installation Requirements: ................................ 19

Indicator Mounting: ................................................ 19

Power Connection: ................................................ 19

Remote Alarm Connection: .......................................... 19

Remote Input Connection: ........................................... 19

Load Cell Connection: .............................................. 19

Lightning Protection: ............................................... 19

Remote Display: .................................................. 20

TR-TR4: Radio Control Operation .................................... 20

To Print Weight Data: .............................................. 20

To Print the Recipe Memory: ......................................... 20

To Print a Single Recipe: ........................................... 20

To Enter ID Numbers-I.D.#: .......................................... 21

To Display ID Numbers-I.D.#: ........................................ 21

Black Out: ....................................................... 21

Pulsed Output: ................................................... 22

Animal Weighing: ................................................. 22

MODEL 320 - System Operation:
Turning ON the Scale: To Zero-Balance the Scale:

Step 1) Press [ON]. Step 1) Press the [NET/GROSS] key and

within three seconds,
Step 2) press the [ZERO] key.

A brief message is displayed (such as

"HELLO"). The scale enters GROSS weighing

mode. Pressing [ON] a second time during
normal system operation starts the self test.

A warm up period of ten to fifteen minutes
provides the most accurate readings. If the
scale is holding a load for a long period of
time (ex. overnight), the weight displayed may The ZERO/BALANCE will "balance off"
vary because of zero shift created by changes trailer, bin, or platform weight.
in temperature. This does not affect the
accuracy of the scale. "ZERO" is displayed to show completion of

the step and the scale is then placed in the
For example, if the system was loaded with GROSS mode.
1000 Lbs, it might read 1200 Lbs the following
day. The change in temperature "zero shifted" Pressing only the [ZERO] key will cause the
the ZERO/BALANCE from 0 Lbs to 200 Lbs. message "TO ZERO/BALANCE PRESS
When unloading the scale, the display will NET/GROSS - THEN ZERO" to be displayed.
count from 1200 to 200 Lbs for a total of 1000
Lbs. If the supply power is below the "low battery

threshold" (10.5 Volts), the message

Turning OFF the Scale: "INDICATOR CANNOT BE ZE-

RO/BALANCED - LOW BATTERY VOLT-

Step 1) Press [OFF]. AGE" is displayed. The message "LO BAT" is

periodically shown on the display (approx.

every five seconds) to alert the operator of the

low battery condition.

Loss of power does not affect the

ZERO/BALANCE or "Setup/Calibration"

values.

1

MODEL 320 - System Operation:
Using the Help Key: NOTE: The scale is in GROSS mode if there is

a flashing arrow pointing toward the GROSS

The [HELP] key provides additional infor- text above the [NET/GROSS] key.
mation about the weighing modes, set­up/calibration, and recipe programming.

To Select Net Mode:
Step 1) Pressing [HELP] while displaying
weight will display information about the last NET mode displays the weight change after a
key pressed. TARE has been performed. TARE is a

temporary "zero" point.

Step 1) If the scale "TARE" weight has not

been entered, press [TARE] to acquire a

"zero".

To Select Gross Mode:

GROSS mode displays the weight change
since the unit was last ZERO/BALANCED.

or
Step 1) Press [NET/GROSS].

Step 2) If in Gross mode, press

[NET/GROSS]. The [NET/GROSS] key is an

alternating action key. If the scale is in the

GROSS mode, pressing the [NET/GROSS]

key places it in the NET mode. If the scale is

in the NET mode, pressing the [NET/GROSS]

key places it in the GROSS mode. If in

LOAD-UNLOAD mode, press [NET/GROSS]

two (2) times.

If the "TARE" function has not been

previously performed, the unit will stay in the

GROSS mode and the message "FOR NET

MODE PRESS TARE" scrolls across the

display.

NOTE: The scale is in NET mode if there is a

flashing arrow pointing toward the NET text
Press the [NET/GROSS] key if in the NET or just above the [TARE] key.
LOAD/UNLOAD mode.

2

MODEL 320 - System Operation:
To Enter a Preset: The three display modes are:

A "preset" is a weight amount that can be "GROSS MODE"
set in the scale. The scale will activate The gross weight is displayed by pressing the
alarms once that weight amount has been [NET/GROSS] key. As ingredients are loaded,
either removed or added. the weight display counts upward toward the

preset value. As ingredients are unloaded the
Step 1) Use the numeric keypad to enter the weight display counts down to the preset
desired preset weight value. value.

Step 2) Press either [NET/GROSS] or "LOAD/UNLOAD MODE"
[LOAD/UNLOAD] to enter the preset value Press the [LOAD/UNLOAD] key to display
and select the "display mode". the amount remaining to be loaded or

unloaded. As ingredients are loaded OR
The 'PRESET' annunciator outer triangle will unloaded, the display counts down from the
turn ON when the preset amount is entered. entered preset weight until it reaches zero.

"NET MODE"

The weight added since the preset has been

entered is displayed by pressing the

[NET/GROSS] key two (2) times if in the

LOAD/UNLOAD mode, one (1) time if in the

GROSS mode. As ingredients are loaded, the

weight display counts upward, as they are

unloaded the weight display counts down.

Once the preset has been entered, the display
shows the weight data in one of three (3)
different "display modes".

Switching between these display modes is

possible at any time by simply pushing the

appropriate keys.

Before the preset weight is reached, the pre-

alarm is activated. This causes the preset

display annunciator, the front panel alarm

light, the output relay, and the alarm horn all

to pulse in sequence with the alarm light. Set

the pre-alarm value to "0" to prevent the alarm

output from pulsing.

When the preset weight is reached, the front

panel alarm light, the output relay, the

'PRESET' annunciator, and the alarm horn will

all be held ON.

3

MODEL 320 - System Operation:
To Clear the Preset Alarm:

The preload tare feature is useful for weighing
Step 1) Press the [CLEAR] key twice. containers after they have already been

loaded. If the weight of the container is

known, this "tare weight" is preloaded into

the scale and the net weight is displayed. The

"tare weight" is also sent to the printer.

This sets the display to zero's "000000" and
returns the scale to weighing.

By pressing the [CLEAR] key only once, a
new preset can be entered.

The current preset alarm condition is also
cleared if reloading a preset using the
"REMOTE ENTER PRESET" feature. This
feature is selected by setting Remote Input to
'PRESET' in the Long Form Setup. It is
activated by using the 20R TR option or by
momentarily connecting the "REMOTE" line The following example demonstrates a feed
in the power cord to +12 Volts DC. wagon on a platform scale:

Using the "REMOTE ZERO" feature of the Step 1 - Balance the scale.
20R TR option or "REMOTE" line in the Step 2 - Weigh and record the weight of
power cord also clear the preset. the unloaded wagon.

Step 3 - Pull the wagon off the scale and

load.

Step 4 - Enter the wagon's tare weight.
To Preload a Tare Value: Step 5 - Place loaded wagon back on the

scale to see net weight.
The scale also allows the "tare weight" to be
entered via the numeric keypad. This is
performed by entering the weight value on the
keypad and then by pressing the [TARE] key.

4

MODEL 320 - System Operation:
Using the Pre-Alarm: Step 3) Use the numeric keypad to select a

Pre-Alarm weight.
The Pre-Alarm feature is an "early warning"
for the preset. For example, if the Pre-Alarm is
set to 100 and the preset is 1000, the preset
alarms flash during the last 100 lbs/kgs of
thepreset. The alarms are continuous once the
preset is active. This allows more accuracy in
reaching the preset.

Changing Pre-Alarm Weight:
Step 1) Press and hold the [NET/GROSS] key,

then press the [ON] key. Continue holding
both keys until the indicator beeps and
displays the message " P-ALM". The 'CAL'
annunciator flashes and the current Pre-Alarm
weight is displayed.

Step 2) Press the [CLEAR] key to erase the
current weight value.

Step 4) Press the [ON] key. The display will

advance to the next setup value.

Step 5) To exit setup and return to weighing,

press and hold the [TARE] key, then press the

[ON] key.

5

MODEL 320 - System Operation:

To Start the Mix Timer: The display now reads HOURS, MINUTES,

and SECONDS (HH:MM:SS), separated by
There are two ways to start the Mix Timer. colons that flash every second.

Step 1) Press the [TIMER] key to see the time
currently set. The [NET/GROSS] and [TARE]
keys can then be used to change the displayed
value.

The [NET/GROSS] key increments the
"flashing" digit and the [TARE] key selects
which digit of the display is flashing.

When the correct time has been entered or if
the number displayed is acceptable, press the
[TIMER] key to set the time and start the Mix
Timer.

or
Step 2) Use the numeric keypad to select the

amount of time. Then press the [TIMER] key
to enter the time.

To Clear the Mix Timer:

Step 1) Press either the [CLEAR] or [TIMER]

key. The scale clears the mix timer alarms and

enters the weighing mode.

6