GT400
Operators Manual
Ft. Atkinson, Wisconsin USA
Panningen, The Netherlands
www.digi-star.com
D3831 REV B February 12, 2010
GT400 User’s Manual D3831 Rev B
Table of Contents
TABLE OF CONTENTS
TECHNICAL SPECIFICATIONS ..................................................................... 1
SAFETY DURING USE ................................................................................... 2
Cleaning ....................................................................................................... 2
Charging Battery and Welding ..................................................................... 2
INDICATOR OVERVIEW ................................................................................ 3
OPERATION ................................................................................................... 5
Turn on Indicator .......................................................................................... 5
Zero Balance Indicator ................................................................................. 5
Loading and Unloading ................................................................................ 6
Field ID ......................................................................................................... 7
Print Formats ............................................................................................... 8
Saving/Printing Gross Weights .................................................................... 9
Turning Off the Indicator .............................................................................. 9
WEIGHING ERRORS ................................................................................... 10
Over-Capacity Limit (
Over Range (
Under Range (
Low Battery Indication (
RUN SELF TEST .......................................................................................... 10
MENUS AND CALIBRATION ........................................................................ 11
Changing Options Using Long Form Setup ............................................... 11
SHORT FORM CALIBRATION ..................................................................... 14
Obtain Current Set-up and Calibration Number ........................................ 14
Calibrating Scale For Maximum Accuracy ................................................. 15
Determining New Setup and Calibration Numbers .................................... 15
Enter A New Setup And Calibration Number ............................................. 16
INSTALLATION ............................................................................................. 17
Indicator Mounting ..................................................................................... 17
Optional Ram Mounting ............................................................................. 17
Cable Connection ...................................................................................... 18
Indicator Connection Diagram ................................................................... 18
Bottom Panel Cable Connections .............................................................. 18
Connect Load Cells to J-Box ..................................................................... 19
Load Cell Direction ..................................................................................... 19
Indicator Calibration ................................................................................... 19
OPTIONAL EQUIPMENT .............................................................................. 20
Data Transfer Options ................................................................................ 20
Remote Indicators ...................................................................................... 20
TROUBLESHOOTING .................................................................................. 21
+RANGE
OVRCAP
) ...................................................................... 10
) .................................................................................. 10
-RANGE
) ................................................................................. 10
LO BAT
) ................................................................... 10
D3831 Rev B GT400 User’s Manual
Table of Contents
All rights reserved. Reproduction of any part of this manual in any form whatsoever without Digi-Star’s express written permission is
forbidden. The contents of this manual are subject to change without notice. All efforts have been made to assure the accuracy of
the contents of this manual. However, should any errors be detected, Digi-Star would greatly appreciate being informed of them.
The above notwithstanding, Digi-Star can assume no responsibility for errors in this manual or their consequence.
© Copyright! 2009 Digi-Star, Fort Atkinson (U.S.A.).
GT400 User’s Manual D3831 Rev B
Technical Specifications
TECHNICAL SPECIFICATIONS
SIZE
7.33” long x 5.25” high x 3.38” wide (186mm x
133mm x 85mm)
WEIGHT
2 lbs (.91 Kg)
HELP MESSAGES
Context sensitive help messages in 10
languages
Long messages are scrolled
TRANSDUCER EXCITATION
8 volts D.C. Nominal
Capable of driving eight 350 Ohms transducers
Short circuit proof
ATC
Auto Temperature Compensation of the internal
circuitry for high accuracy weighing
measurements
TRANSDUCER SIGNAL
Compatible with transducers having full scale
indicator transfer characteristics greater than
0.25 mv/v
“AUTO RANGE”
(Selectable) To increase display counts
at weight values of 300 and 600 display counts.
CONNECTOR
AMP plastic weather resistant circular
connector. Gold contacts.
POWER REQUIREMENTS
10.5 to 16.0 V.D.C.
160 mA nominal with four 350Ω L.C.
SET UP AND CALIBRATION
Via front panel
GROSS RANGE
999,999 max.display
LOW BATTERY WARNING
Enabled at 10.5V nominal
POUND/KILOGRAM
Selectable
DISPLAY
STD EZ 6 Digit LCD 1.0. high
DISPLAY RESOLUTION
.01, .02, .05, .1, .2, .5, 1, 2, 5, 10, 20, 50, 100
DISPLAY UPDATE RATE
Selectable: 1, 2, 3, 4 times/sec.
MAX. DISPLAY RESOLUTION
Adjustable to 40,000 counts max.
ZERO TRACKING
Selectable, On/Off
SPAN ACCURACY
±(.1% + .005%/ °F) or (.1% + 0.009% °C) full scale ± 1
output count
MOTION DETECTION
Selectable, On/Off
ZERO ACCURACY
(.005%/ °F.) or (0.009% °C) full scale ±1 output count
for 0.5 mv/v transducer
ENVIRONMENTAL ENCLOSURE
IP65, IEC 529
WEIGH ALGORITHM
4 internally selectable digital filters to optimize
performance
(General, Slow, Fast and Lock-on)
NON-VOLATILE MEMORY
EEPROM for balance
OPERATING TEMP
-29°C to 60°C -20°F to 140°F
D3831 Rev B GT400 User’s Manual 1
Safety During Use
SAFETY DURING USE
Caution
Cleaning
Do not use running water (high pressure cleaners, hoses) to clean the
indicator.
Charging Battery and Welding
Disconnect all cables from the weighing indicator before charging the
battery or welding on the machine. If cables are left connected, the
weighing indicator and connected load cells could be damaged.
Scale Indicator
Disconnect
all cords
2 GT400 User’s Manual D3831 Rev B
Indicator Overview
INDICATOR OVERVIEW
5
8
6
7
1
Note:
See page 17 for installation instructions.
1
- ZERO/BALANCE operation when the scale is empty.
2
- start unloading
unloaded, stores or prints data to serial port when complete
3
- edit name and display weight accumulation value.
2
and stop unloading, indicator displays amount
3
4
.
4
- turns the unit on and off.
5
Net – arrow flashes in net mode.
6
Print – arrow flashes when printing or saving to Data-Down-Loader.
7
Gross – arrow flashes in gross mode.
8
Unload – arrow flashes in unload mode.
D3831 Rev B GT400 User’s Manual 3
Indicator Overview
Bottom Panel
9
- Remote Port
9
- Power Cord Connection
10
- Load Cell Connection
11
- Serial/J905
12
Input/Output devices.
– Optional, for remote display.
– Optional, to communicate with computer and other digital
Pin J905 Connector Signals
1 +5VDC
2 Com #1 Out (Tx) - Computer
3 Com #1 In (Rx) - DDL & Computer
4 Com #2 Out (Tx) - Printer
5 +12 VDC
6 Gnd – Available for any Com device
7 Com #2 In (Rx)
8 Ground
10 11
– +12 VDC.
– Connect cable from the J-Box.
12
4 GT400 User’s Manual D3831 Rev B
Operation
OPERATION
Turn on Indicator
Zero Balance Indicator
1
0
2
1. Press .
1
1. Press and hold for 3 seconds
to zero balance indicator.
2. Flashing arrow points to gross next
to the display window, indicator
ready to weigh.
D3831 Rev B GT400 User’s Manual 5
Operation
Loading and Unloading
Note: For best accuracy park scale on
level surface and allow weight reading
to stabilize before Zero balancing the
scale and before beginning to unload.
2
4
4
1. Load cart.
2. Press to begin unloading.
Display reads Zero. Arrows point to
Net and Unload.
3. Unload weight from cart. Display
shows amount unloaded.
4. Press . after unloading is
complete. Data is automatically
added to accumulator and saved to
printer or DDL (See print format
section, page 8); a flashing arrow
will point to PRINT.
Note: Print and accumulator features
are available with Serial Option only.
5. Indicator displays GROSS weight
remaining on scale.
5
6 GT400 User’s Manual D3831 Rev B
Operation
Field ID
6 character identification value stored
in internal memory of indicator to
identify field being unloaded, truck
being loaded or other information.
2
3
1
4
1. Press .
flashing cursor or character is
displayed in the first position.
2. Press to scroll available
characters. Hold for 4
seconds to increase second scroll
rate.
3. Press to scroll backwards
through available characters.
Press to move to the next
character.
4. Press to accept and save.
FIELD
is displayed and a
D3831 Rev B GT400 User’s Manual 7
Operation
Print Formats
Three print formats are available to output
or printer.
PRTAC1:
PRTAC2:
PRTAC3:
See “Menus and Calibration” (see page 11) to change print format
(PRTFMT).
FIELD ID, 4856, GR, 274575, PA, 05FE08, I:44P
FIELD ID, 05FE08, I:44P
4856, GR, 274575, PA
Includes following information:
•
Field ID
•
Weight
•
Weight Tag (NE, GR, Load/Unload)
•
Accumulated Weight
•
Print Accumulator Tag
•
Date and Time
FIELD3, 5977, LB, ,GR, 3097I9,PA,05FE08, 4:42P
Includes above and adds “Unit of Measure”.
PRTACC
value and
FIELD ID
to DDL
8 GT400 User’s Manual D3831 Rev B
Operation
Saving/Printing Gross
Weights
(Optional w/ Serial Option)
1
Turning Off the Indicator
1. Press and hold three
seconds to send weight to serial
port.
Each time this command is executed
the value displayed is added to the
“PRTACC”
weight. Weight is accumulated until
cleared.
1. Press until “
which is the accumulated
BYE
” is displayed.
bye
1
D3831 Rev B GT400 User’s Manual 9
Weighing Errors
WEIGHING ERRORS
Over-Capacity Limit (
The display shows the message "OVRCAP" if the weight on the scale system
exceeds the capacity limit. The capacity value is entered in SETUP to warn of
overloading the scale system.
Over Range (
The display shows the message "+RANGE" if the weight on the scale system
exceeds the maximum weight measurable by the scale system. The over
range value is always the system’s maximum A/D counts multiplied by the
scaling factor. The actual weight at which over range occurs depends on the
calibration, zero, and display count size.
Under Range (
The display shows the message "-RANGE" if the weight on the scale system is
less than the minimum weight measurable by the scale system. The under
range value is always the system’s minimum A/D counts multiplied by the
scaling factor. The actual weight at which under range occurs will depend on
the; calibration, zero, and display count size.
+RANGE
-RANGE
Low Battery Indication (
If the supply voltage drops below the (10.5 Volts), the message
BATTERY - TURNING OFF”
alert the operator of the low battery condition.
RUN SELF TEST
1
)
and
OVRCAP
)
“
LO BAT
)
LO BAT
)
“
RECHARGE
”
will periodically show on the display to
1. Press 3 seconds until the
LB symbol starts to blink.
Release.
2. Press to start the Self Test.
10 GT400 User’s Manual D3831 Rev B
Menus and Calibration
MENUS AND CALIBRATION
The Indicator has optional settings that allow flexibility in the way that the scale
is used and data is collected.
Changing Options Using Long Form Setup
Enter Long Form Setup by holding and for three seconds.
Press to advance to desired menu 1,2,3,4,CALIB, or EXIT,
press to select.
Press to advance to desired setting.
Press to advance setting to desired option.
Press to save setting option and advance to next setting.
Hold and press to return to normal indicator operation.
Default settings from the factory vary with options and due to customer
preferences.
SETTING
[display]
MENU 1. BASIC FEATURES IN MOST INDICATORS
LANGUAGE
(langag)
DISPLAY RATE
(0 rate)
FIELD ID
(FIELD)
D3831 Rev B GT400 User’s Manual 11
OPTIONS [displayed]
BOLD=DEFAULT
English
Dutch
French
German
Italian
Portuguese
Spanish
Danish
Hungarian
(MAGYAR]
Spanish
I,2,3,4
NEW EZ
[ENGLSH)
[NEDERL]
[FRANCS]
[DEUTSH]
(ITAL]
(PORT]
(ESPAN]
(DANSK]
(VESTA]
DESCRIPTION
Select language to be displayed.
Update display times per second.
Identity of FIELD location, Truck ID
or Grain Cart ID.
Menus and Calibration
SETTING
[display]
OPTIONS [displayed]
BOLD=DEFAULT
DESCRIPTION
MENU 2. CLOCK, PRINTER, COMMUNICATIONS & ESTIMATED
WEIGHT FEATURES
TIME FORMAT
(time f)
TIME
(time)
DATE FORMAT
(date f)
DATE
(date)
TARE AUTO
PRINT
(tareap)
ONE LINE PRINT
(Il prt)
AUTO PRINT
(aprint)
INTERFACE
(COM IN)
24 HR
AM/PM
XX:XX:XX
1-mm-dd
2-mm/dd/yy
3-mm/dd/yyyy
4-dd-mm
5-dd/mm/yy
6-dd/mm/yyyy
7-ddmoyy
8-ddmoyyyy.
Enter XXXXXX
ON/
OFF
ON/
OFF
ON/
OFF
DOWNLD,
EZ CMD,
EZ2CMD
Select time format -AM/PM or 24
hour
changes time,
selects hh,:mm,or:ss.
Select date format
changes date –
moves to next field.
If ON -tare auto-prints displayed
weight.
If ON -indicator data prints on one
line.
If ON -pressing keys auto-prints
weight values.
Com port interface selections
DOWNLD
for Data Down Loader, EZ
EZ CMD
= Original EZ Commands,
EZ2CMD
= EZII Escape Commands.
12 GT400 User’s Manual D3831 Rev B
Menus and Calibration
SETTING
[display]
PRINT FORMAT
(prtfmt)
(zerout)
(CI DLY) OFF,
(
C2 DLY
)
(prtacc)
OPTIONS [displayed]
BOLD=DEFAULT
AUTO
WTONLY
DOWNLD
DT+TM
ID+TM
IDWTTM
ANIMAL
3200-A
3200-B
32-TMR
DATCHI
FDINFO
WTRCTM
EIDINF
EID
EIDVID
PRTAC1
PRTAC2
PRTAC3
FEED-1
PRTAC4
PRTAC5
PRTAC6
BUFINF
.I0
, .25, .50, .75, I-5
OFF
, .I0, .25, .50, .75, I-5
DESCRIPTION
Select alternate & comma (CSV)
formats.
Perform the Zero/Balance for
SCOREM #11 weight output and
Analog Output Option (4-20mA).
Choose the number of seconds
the printer will delay before
advancing to the next print line.
Choose the number of seconds
the printer will delay before
advancing to the next print line.
Reset Print Accumulator
MENU 3. SCALE CALIBRATION SETTINGS
DISPLAY COUNT
(
COUNT
)
DISPLAY UNIT
(lb-kg)
CAPACITY
(cap)
.0I,.02,.05,.I,.2,.5,I,2,5,I0,20,
50,I00
LB
/ KG
85000
Count set too small, readings
unstable and indicator not accurate
Unit of measure.
When changing weight unit using
long form, calibration is adjusted so
scale displays accurately in new
display unit.
Enter MAXIMUM weight
measurable on scale.
MENU 4 – NOT USED
D3831 Rev B GT400 User’s Manual 13
Short Form Calibration
SHORT FORM CALIBRATION
The Short Form Setup & Calibration procedure allows you to change “SETUP”
and “CAL” numbers of indicator.
Do not attempt to calibrate scale if indicator is not reading stable weights.
Calibration procedure will not fix instability, inconsistencies, or flashing
"RANGE" messages.
Obtain Current Set-up and Calibration Number
Write down current SETUP and CAL
numbers of your GT 400 indicator.
These numbers are displayed during
Self Test.
3
2
1
SETUP NUMBER
1
To run self test with indicator ON:
1. Press until LB symbol starts
to blink. Release, then press
to start Self Test.
2. Press to “pause” the Self-Test
while numbers are displayed.
3. Press again to allow self-test
to complete normally.
SETUP # _______________
CAL # ________________
Following is a list of functions that are controlled by the “SETUP” number:
Weigh Method (
Display Units (
Display Counts (
14 GT400 User’s Manual D3831 Rev B
W MTHD
) Gain
LB-KG
) Scale Capacity
COUNT
)
Short Form Calibration
CALIBRATION NUMBER
The “CAL” number is adjusted to make scale read proper weight for different
load cells and to make accuracy adjustments on a scale system. Systems
should be checked with known weights and adjusted if necessary to insure
accuracy. Both setup and calibration numbers are changed to convert a scale
from lbs to kgs.
Calibrating Scale For Maximum Accuracy
Note: To accurately calibrate scale, you need a large amount of weight that
has a known value. For best results you should have at least as much weight
as largest load you plan to weigh.
Determining New Setup and
Calibration Numbers
1
The setup number does not change.
1. Press to Zero-Balance.
2. Put KNOWN WEIGHT on scale
platform and write down DISPLAY
WEIGHT.
Perform following equation to find
ACCURATE CAL NUMBER.
D3831 Rev B GT400 User’s Manual 15
Short Form Calibration
Enter A New Setup And
Calibration Number
1 1
4
3
1. Press and hold and
for 3 seconds to enter short form
calibration.
2. The display will flash “
then display the 6-digit setup
number with the right digit flashing.
3. Press several times to
5
6
increment digit to it proper value.
4. Press to advance digit left.
Repeat steps 3 and 4 for each digit as
required.
5. Press to enter new setup
number and display calibration
number.
Repeat steps 3 and 4 to modify the
calibration number.
6. Press to enter new calibration
number and display will go back to
normal.
7. Verify the accuracy of scale.
SETUP
” and
16 GT400 User’s Manual D3831 Rev B
Installation
INSTALLATION
Indicator Mounting
RAIL MOUNT WING MOUNT WEDGE MOUNT
STANDARD
KEY PART NUMBER DESCRIPTION
A 403769 BRACKET – STR TOP MOUNT
B 403980 BRACKET – ROBO MOUNTING
C 403770 BRACKET – WING MOUNT
D 405069 U-BOLT, 1/4-20 X 3.25 ZP
E 403771 MODIFIED PLASTIC WEDGE MOUNT
F 405124 WEDGE MOUNT BRACKET, INCLUDES U-
BOLTS & NUTS
G 405084 NUT, 1/4-20 TOP LOCKING FLANGE
Optional Ram Mounting
RAM MOUNT
STANDARD
KEY PART NUMBER DESCRIPTION
A 403180 RAM MOUNT
B 403179 MOUNT BASE-1" BALL U-BOLT
C 404230 RAM SUCTION CUP W/TWIST LOCK
D3831 Rev B GT400 User’s Manual 17
U-BOLT BASE TWIST LOCK
SUCTION CUP
Installation
Cable Connection
Remote Indicator
(Optional)
Scale Indicator
Power Cord
Pin To 12VDC Power Supply
1 Red +Terminal
2 Black -Terminal
3 Orange Alarm Out
4 Blue
Remote Input
See Connect
Load Cells to
J-Box (page
19)
Indicator Connection Diagram
J-Box Connection
Remote Port
(Optional)
Power Cord
Connection
Serial/J905
(Optional)
Bottom Panel Cable Connections
18 GT400 User’s Manual D3831 Rev B
Installation
w
Connect Load Cells to J-Box
Connect load cell
ires to terminal
blocks. See Wire
Color Key
Wire Color Key
Color Description
1 White Signal +
2 Green Signal -
3 Red Excitation +
4 Black Excitation -
5 Shield Shield
Tighten Nuts
J-Box Illustrated for 4
Load Cell Installation
J-Box Cable
Load Cell Cable
Connect to Indicator
bottom Panel.
J-Box Connections
Load Cell Direction
Observe direction of arrow when installing load cell.
Indicator Calibration
If you connect an indicator to a different weighing implement, the calibration
and setup number may need to change. Refer to calibration procedures (see
pages 14-16) or contact your Digi-Star representative for assistance.
D3831 Rev B GT400 User’s Manual 19
Optional Equipment
OPTIONAL EQUIPMENT
Data Transfer Options
Remote Indicators
Kit Data Down Loader
Allows transfer of data from indicator
to PC. (Optional serial/J905 port must
already be installed in indicator)
RD440 small remote display
RD2400V backlit remote display with
1.7” high numbers
RD2400V backlit remote display
w/transmitter and installed receiver
RD4000 remote display
20 GT400 User’s Manual D3831 Rev B
Troubleshooting
p
)
)
g
j
TROUBLESHOOTING
FLOW CHART
START
YES
Does the indicator come on?
NO
Is the reading on the
Indicator stable?
YES
Put your weight on each
load cell. Does the indicator
respond to your weight?
YES
Are the readings
all positive? If not
Load Cell is
u
side down.
Does the scale weigh you
approx. the same over all
Load Cells? (Weight will
not be accurate
YES
Your Indicator is probably not set-up
and calibrated correctly. Check the
decal on the bottom of Indicator. It
shows what type of Load Cells the
Indicator was calibrated to. By
pressing the on key while the
Indicator is already on, you will get
the Indicator’s “Set-up” and “Cal”
numbers. See if they compare to the
set-up and calibration numbers on
the Indicator. Contact Dealer for
further information.
NO
Check all J-Box
and Load Cell
cables for cuts
or pinched/flat
spots.
NO
If your display is unstable, or
flashes “±RANGE” disconnect
the j-box cord from Indicator.
Is display still unstable?
NO
Your Indicator is probably
cables are not attached to
Remove the cover from your J-Box
Is there moisture inside the box?
Look for loose connections.
Watch your Indicator display
while moving the wires and
pressing on the circuit board
inside the J-Box. You will see
if there is a loose connection
or bad solder
YES
defective. Try another
Indicator to verify.
Be aware of electrical
interference that might
affect Indicator, such as
mobile phones, CB
radios, radio towers,
electrical motors, etc.
Make sure Load Cell
hydraulic lines or
reservoir.
NO
Note:
oint.
Poor Connection
apart and clean connections.
(Rust or paint should be wire
brushed.) Then reconnect and
tighten securely.
Bad Battery:
(weak battery may test good if
tested with no load on battery)
Bad Power Cord:
red wire is connected to (+)
positive side and black wire is
connected to (-) negative side.
When using a multimeter to
check for voltage, measure
between pin 1 (pos) and pin 2
(neg). Meter should read
between 10.5 and 14.5 volts
DC if using a tractor power
cord, black wire is positive and
white wire is negative.
Bad Indicator:
Indicator. (Even a different
model or set-up should come
Dry out your J-Box (use a
hairdryer). Check cable
strain reliefs for tightness.
Cables have drip loops. Is
lid
asket damaged?
: Take them
Replace battery
Make sure
Try another
on.
YES
Fix or replace the J-Box
Did the J-Box have a bad
YES
connection or loose wire?
NO
See next Page
D3831 Rev B GT400 User’s Manual 21
,
y
p
p
FLOW CHART
Continued
1. Disconnect all the Load Cell
wires from the terminal blocks
inside the J-Box (leave the
Indicator on while connecting
and disconnecting the wires, it
will not damage Load Cells or
Indicator if wires are shorted
during this step). Is reading on
Indicator stable?
NO
Replace J-Box
(be aware of electrical
interference that might affect
your scale such as: mobile
phones, CB radios, radio
electric motors, etc.).
towers
4. Record the Indicator reading with
the Load Cell connected.
5. Stand or hang your weight over the connected
Load Cell. Record how much the weight
increased with your weight over the Load Cell. (A
scale with only one Load Cell will weigh heavy.)
2. Zero balance the Indicator.
(Press “NET/GROSS” then
“ZERO”). Indicator should display
“0”.
YES
Note:
Hook up the Load Cells to the J-Box one at
a time (only one Load Cell connected at a time).
This will get a reading for each Load Cell. While
performing this test, watch for any other
symptoms such as erratic/unstable display.
Indicator flashing “±RANGE”, negative reading,
etc. If the Indicator reading should ever appear
abnormal with any Load Cell connected then it is
probably bad.
3. Connect one Load Cell back into one of the
terminals in the J-Box. (The reading you get for
each Load Cell is dependent on the size and type
of each Load Cell and how much weight is over
each Load Cell. In general, the number should be
Note:
that’s verification on the J-Box is OK. If the
scale did not respond, either that Load Cell is
bad or the J-Box is bad. Try the other Load
Cells. If the Indicator still shows no response,
positive and stable.)
If the scale responded to your weight,
the J-Box is bad. (Replace J-Box)
6. Disconnect the first Load Cell and reconnect
7. Repeat step 6 for the remaining Load Cells.
Remember to record
our readings.
a second one. Record the Indicator reading.
Stand or hang your weight over the connected
Load Cell. Record how much the weight
increased.
Do not expect the Load Cells to give the same
reading. It is common for Load Cells to have
readings that vary by hundreds, even thousands.
Es
ecially when one is carrying more weight.
8. Bad Load Cells will have a reading that is
either unstable, makes the indicator flash
“±RANGE” or is more than three times greater
or less than the average of the others. Also the
readings of your weight over each Load Cell
should be similar. (Probably 4 times your actual
weight). Any differences could be an indication
of a bad Load Cell or a structural
roblem.
22 GT400 User’s Manual D3831 Rev B
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