Doran 550 Series User manual

550 Series
Washdown Bench Scale
Operators Manual
MAN353 – Rev 1 Doran Scales, Inc. www.doranscales.com

Table of Contents
Section 1. Introduction and Specifications .............................................................................. 1
Unpacking Your Scale ....................................................................................................................... 1
Specifications ................................................................................................................................... 2
Section 2. Scale Operation Guide ............................................................................................ 3
Scale Display .................................................................................................................................... 3
Scale Operation ............................................................................................................................... 4
Battery Operation ............................................................................................................................ 5
Recharging Battery .......................................................................................................................... 5
Section 3. Scale Setup Guide ................................................................................................... 6
Parameter Setup .............................................................................................................................. 6
Section 4. Troubleshooting ..................................................................................................... 9
Operation Error Codes ................................................................................................................... 10

1
Section 1. Introduction and Specifications
Thank you for purchasing a Doran Scales product. Please read this manual to ensure
obtaining all the benefits that this scale can provide. If any questions arise, please
contact the Doran Scales Technical Support Department at 630-879-1288.
Unpacking Your Scale
Before unpacking your Doran scale, please read the instructions in this section. Your
new scale is a durable industrial product, but it is also a sensitive weighing instrument.
Normal care should be taken when handling and using this product. Improper handling
or abuse can damage the scale and result in costly repairs that will not be covered by
the warranty. If you notice any shipping damage, notify the shipper immediately.
Please observe the following precautions to insure years of trouble free service from
your new scale.
• DO NOT drop the scale
• DO NOT immerse the scale
• DO NOT drop objects on the platform
• DO NOT pick up the scale by the top of the weighing platform
• Carefully remove the scale from the shipping carton

2
Specifications
NTEP Certificate
Class III – 3,000d; Cert. 19-XXX
Enclosure
Stainless Steel and ABS Plastic base
Product Dimensions
9.5” W x 4.7” H x 11” D
Environmental
Protection
IP68 – Certified
Legal for Trade
Temperature Range
14 °F to 104 °F (-10 °C to +40 °C)
Power Input
100 – 240VAC 50/60Hz
Internal Rechargeable
Battery
6 V, 4 AH, lithium rechargeable battery 100 hours of
continuous use using automatic shutoff timer.
Display
1.2" high, 6 digit backlit LCD
Displayed Units
lb, oz, kg, g
Controls
On/Zero, Unit, Net/Gross, Tare, Off
Model
Standard
Model
Certified
550-06
6 x 0.001 lb
3 kg x 0.5 g
550-06-LFT
6 x 0.002 lb
3 kg x 1 g
550-12
12 x 0.002 lb
6 kg x 1 g
550-12-LFT
12 x 0.005 lb
6 kg x 2 g
550-30
30 x 0.005 lb
15 kg x 2 g
550-30-LFT
30 x 0.01 lb
15 kg x 5 g

3
Section 2. Scale Operation Guide
This section contains information and instructions for basic scale operation.
Fig. 1: Front Panel
Scale Display
Stability indicator. Indicates when stability is sensed on the platform.
Changes in weight, vibration or air currents can cause the scale to go into
motion and turn off the stability indicator.
Center of zero indicator. The annunciator will illuminate while the scale is
displaying a zero weight.
NET
Indicates a net weight is displayed. Net weight is displayed when a tare
value is present.
GROSS
Indicates a gross weight is displayed. Gross weight is indicated only
when a tare value is present.
lb, kg,
g, oz
Indicates current unit of measure
_HI_, _OK_,
_LO_
Checkweigh annunciators (initially disabled; please first set nonzero limit
values in FnC 03 in order to use this feature)
HI = overweight; OK = normal; LO = underweight
While the scale is charging, the charging indicator is red. When the
charging is complete, the charging indicator will turn green.
The bars below the battery annunciator indicate remaining battery power.
When the battery symbol (without any bars) is flashing, there will be
approximately 1~2 hours of battery power remaining before the scale
turns off. In this case, please fully recharge the scale before using the
scale again.
oz

4
Scale Operation
Adjust leveling feet of your scale until the bubble of the spirit level is within the
horizontal range. Then you can use scale buttons to perform scale operations.
NOTE: The button may be referred to as ON/ZERO or ZERO.
Power
Press ON/ZERO to turn the scale on
Press Off to turn off
Basic Weighing Operation
1) Remove all items from the scale platform
2) Press the ZERO button to zero the scale
3) The weight display now reads zero
4) Place an item on the scale platform and wait for the stability indicator to turn on,
indicating an accurate, stable weight
ZERO
ZERO is used to zero the scale display. To zero the scale, wait until the scale is stable
and press the ZERO button. The scale will not zero if the scale is in motion or when a
tare is present. The zero function will operate over the entire capacity of the scale.
UNITS
Press UNITS to change the current unit of measure. Lb, kg, g, oz are available.
NET/GROSS
Press to toggle between Net and Gross weighing mode when a tare is present. Gross
weight is the total amount of weight on the platform. Net weight is the Gross weight
less the active tare weight.
TARE
Press to tare the current displayed weight. The indicator enters net mode. The tare
function operates over the full capacity of the scale.
When in Net mode, and the platform empty, press TARE to clear the tare value and
exit tare mode

5
Battery Operation
The indicator runs on lithium battery. To maximize battery life, set the Automatic
Shutoff Timer (FnC 02) which will automatically power down the scale after a period of
non-use.
Recharging Battery
To charge the battery, plug in the charging pad and place into the receptacle on the
bottom rear of the scale. The pad is magnetic and will secure in place when in the
correct orientation. While the scale is charging, the charging indicator is red. When the
charging is complete, the charging indicator will turn green. The scale can be used
while recharging the battery.
Leaving the scale plugged in will ensure a fully charged battery and will not affect the
life of the battery. The battery supports at least 300 recharge cycles before requiring
replacement.
This side up

6
Section 3. Scale Setup Guide
Parameter Setup
With power on press NET/GROSS and ON/ZERO at the same time to enter
Function Mode menu, then press ON/ZERO or UNITS to navigate:
Function Mode menu
DISPLAY
LEVEL 1 FUNCTION
DISPLAY
LEVEL 2 FUNCTIONS
00 ESC
Exit Function Mode menu
---
---
01 FnC
Function Setting menu
FnC 00
Return to Function
Setting menu
FnC 01
Backlight Setting
FnC 02
Automatic Shut-off Timer
FnC 03
Checkweigh Modes
FnC 04
Restore the default
settings
FnC 05
Noise Filter setting
FnC 06
Hold Function setting
FnC 08
Two Weighing Units
Setting
FnC 09
Unstable Tare
02 EC
Simple Weight Calibration
---
---
ON/ZERO key Þ Next / digits up (0à9)
UNITS key Þ Previous / digits down (9à0)
TARE key Þ Move the cursor to right
NET/GROSS key Þ Move the cursor to left.
ENTER
9
à
0 0
à
9
-+

7
01 FnC Function Setting menu details
FnC 01
Backlight Setting
oFF,
on
When set to on, Backlight will dim when scale is not in use
and will automatically turn on when in use.
FnC 02
Automatic Shutoff Timer
0-9
Select number of minutes before the scale automatically
shuts off. Set to 0 to disable. Default is 2 minutes.
FnC 03
Checkweigh Modes
Press TARE to enter sequence
1. Enter overweight (HI) value (default = 0)*
2. Enter underweight (LO) value (default = 0)*
3. 11100b is displayed
4. Left most digit: 1 = beep for accept on, 0= no beep
5. Second to left digit: 1 = beep when stable, 0= beep when
unstable
6. Third to left digit: 1 = beep when Accept, 0= beep when
over or under and greater than 10d above zero
*Checkweigh Modes are disabled when overweight and underweight values are both 0.
Checkweigh Modes are enabled when overweight and/or underweight values is/are non-zero.
FnC 04
Scale Default (non approval only)
Press ZERO to select Format, then press TARE to default
scale settings. Exit setup and restart the scale to re-initialize
the scale to factory default settings.

8
FnC 05
Filter Settings (non approval only)
Zero: 0-9
(default 0)
FiL: 0-9
(default 0)
3db: 0-9
(default 5)
Adjustments to offset environmental weighing interferences
Press TARE to enter sequence
1.
ZEro
“Weight Noise Threshold” eliminates minor weighing
noise when weight on scale is over 1/3 full capacity: 0=off;
1-9 = 1d to 9d threshold (weighing fluctuation below this
threshold is de-noised).
2.
FiL
“Weighing Sampling Period” sets time period for scale
to gather weighing information: 0 is shortest, fastest, & least
stable. 9 is longest, slowest, & most stable.
3.
3db
“Weighing Bandwidth” sets frequency range for
gathering weighing information: Select 0-9. Default is 5. 0
is lowest, slowest, & most stable; 9 is highest, fastest, &
least stable.
FnC 06
Hold Function (non approval only)
hoLd
0: Disabled (default)
1: Peak Hold Mode
2: Hold on stable weight, cleared by pressing any key
3: Hold on stable weight, cleared when weight removed
FnC 08
Two Weighing Units Setting
uSEr
This setting allows the use of only two units (instead of four)
for quick unit switching.
0: Disabled (lb, kg, g, oz available)
1: kg (lb, kg available)
2: g (lb, g available)
3: oz (lb, oz available)
FnC 09
Tare on Demand (non approval only)
St
0: Disabled
1: Tare enabled when in motion

9
02 EC Simple Weight Calibration menu details
02 EC
Simple Weight Calibration (non approval only)
Press Tare to enter sequence
1. Scale capacity is displayed
2. Press NET/GROSS to select digit
3. Press Unit ON/ZERO to change digit value
4. With rightmost digit flashing, empty weigh pan, then press
TARE.
5. After stabilization, place displayed weight on weigh pan,
then press TARE.
6. After 3 beeps, remove weight from weigh pan.
7. Calibration now finished.
Section 4. Troubleshooting
If any problem persists, contact Doran Tech Support at 630-879-1288.
Problem
What to Do or Check
Weight reading will
not repeat or does
not return to zero
when weight is
removed
Examine the weighing platform for any interferences. Be
sure that nothing is inside the platform, under the load cell
or the weigh bridge structure.
Scale will not indicate
full capacity or go into
overload
Make sure that there is nothing caught in the scale under
or around the load cell or spider, which would interfere with
their movement. If not, check the overload stops using the
above procedure.
Scale will not zero
when the ZERO
button is pressed
Make sure that the scale is stable ( annunciator is
ON) when ZERO is pressed.
Weight readings don't
seem to be correct
Check the scale's accuracy with a test weight.
Recalibrate if necessary.
Scale reading is
bouncing
Check for air currents and/or vibration around the scale.
If that is the cause, it may be necessary to change the
Display Filter parameter.

10
Operation Error Codes
Error
Message
Descriptions
E1
Initial zero is higher than the zero range when switching the indicator on
E2
Initial zero is lower than the zero range when switching the indicator on
E4
A/D Error
oL
The weight of the object is over 9 divisions of the maximum capacity
------
Startup zero is below the allowed range

Doran Scales, Inc.
883 Enterprise Ct
St. Charles, IL 60174
www.doranscales.com
630-879-1200