Doran PC-500 User manual

Model PC-500
Portion Control Scale
Instruction Manual
Doran Scales, Inc.
1315 Paramount Pkwy
Batavia, IL 60510
1-800-262-6844
www.doranscales.com
MAN0266 Revision 0.3

Table of Contents
Section 1. Unpacking and Installation.............................................................................1
Unpacking:.................................................................................................................................................................1
Installation:................................................................................................................................................................1
Electrical Connections:..............................................................................................................................................1
Care & Cleaning:.......................................................................................................................................................2
Section 2. Scale Operations Guide................................................................................3
Display Functions:.....................................................................................................................................................3
Basic Weighing:.........................................................................................................................................................3
Units Select:...............................................................................................................................................................3
Low Battery:..............................................................................................................................................................3
Power:........................................................................................................................................................................3
Automatic Sleep Function:.........................................................................................................................................3
Section 3. Setup and Calibration Guide.........................................................................4
Optional AC Power Connection: ...............................................................................................................................4
Optional RS-232 Connection:....................................................................................................................................4
Optional Remote Zero Switch: ..................................................................................................................................5
Calibration and Parameter Setup: ..............................................................................................................................6
Calibration Troubleshooting:.....................................................................................................................................7
Section 4. Parameter Setup...........................................................................................8
Entering and Exiting Setup Mode:.............................................................................................................................8
Scrolling Through Parameters: ..................................................................................................................................8
Changing a Parameter:...............................................................................................................................................8
Saving Parameter Changes: .......................................................................................................................................8
Changing Start up Units:............................................................................................................................................8
Legal for Trade Restrictions:.....................................................................................................................................8
Section 5. Setup Menus Explained ................................................................................9
Resolution Setup Menu..............................................................................................................................................9
Capacity Setup Menu.................................................................................................................................................9
Calibration Menu(s)...................................................................................................................................................9
Reset All Parameters to Default Settings? .................................................................................................................9
Auto Off Mode ........................................................................................................................................................10
Operation Mode.......................................................................................................................................................10
Auto Zero Tracking .................................................................................................................................................10
Motion Aperture ......................................................................................................................................................10
Start Up Zero ...........................................................................................................................................................11
Data Output..............................................................................................................................................................11
Data Format.............................................................................................................................................................12
Baud Rate ................................................................................................................................................................12
lb, oz, kg Units Enabled...........................................................................................................................................12
g Units Enabled........................................................................................................................................................13
Startup Units............................................................................................................................................................13
Raw Counts..............................................................................................................................................................13
Section 6. Data Communications.................................................................................14
Introduction to data communications:......................................................................................................................14
Remote Scale Commands: .......................................................................................................................................17
Section 7. Specifications...............................................................................................18
Section 8. Troubleshooting ..........................................................................................19
General problem resolution: ....................................................................................................................................19
Error Messages:.......................................................................................................................................................20

Section 1. Unpacking and Installation
Unpacking: 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 may not be covered by
the warranty. If you notice any shipping damage, notify the shipper
immediately. Carefully remove the scale from the shipping carton. Be
sure to retain all shipping materials in case the scale must be shipped
elsewhere.
Installation: Place the scale on a stable flat surface. Verify that the bubble level
located left of the scale display shows that the scale is level. Adjust the
four feet to obtain a level condition (bubble level centered).
Electrical Connections:
An optional transformer is available for 115 or 230 VAC operation. See
section 3 for installation instructions.
Be sure the AC power is not excessively noisy –this can occur if large
inductive loads, such as solenoids or motors, are on the same power
line. Subjecting electronics to problematic AC power lines may result in
damage not covered by the warranty. Also be sure that the power outlet
and transformer are not exposed to water while the scale is plugged in.

Care & Cleaning:
With reasonable care, this product will last for many years. Here are
some tips to care for your PC-500 Portion Control Scale.
! DO NOT drop the scale.
! DO NOT immerse the scale.
! DO NOT drop objects on the scale.
Hand clean with a damp cloth using mild detergent.
Do not wash the scale in a dishwasher –the removable platter is
dishwasher safe.
Do not use strong solvents or abrasive cleaners as this can damage
the touch panel or other plastic parts.
Do not overload the scale.
Do not use sharp objects to press any of the buttons.
Always use the PC-500 on a stable, vibration-free surface for best
weighing results.
Do not lift the scale by the weighing platform.
To ensure the scale retains its IP66 rating, keep the battery
compartment fully installed and keep the rubber plug on the battery
compartment in place.

Section 2. Scale Operations Guide
Fig. 1 Display
Display Functions:
The Model PC-500 controls consist of ON/OFF, UNITS and ZERO buttons
located under the main LCD display. The display is used to provide weight
indications and operator messages describing scale operation.
Basic Weighing:
1. Select the desired weighing units by pressing the UNITS button.
2. Empty the scale platter and press ZERO to zero the scale. The center of zero
annunciator will activate, indicating an accurate zero has been achieved.
3. Place an item on the scale platter and wait for the MOTION indicator to go out.
4. Read the weight on the display.
Units Select:
Press the UNITS button to change weight display units from lb - oz - kg - g - lb:oz.
Low Battery:
When the batteries need to be changed, the “LOW BATT” indicator illuminates.
Power:
The PC-500 is powered by six (6) D alkaline batteries or an optional AC wall
transformer. Turn the scale on or off by pressing ON/OFF.
Automatic Sleep Function:
The PC-500 has a feature called “Auto Shut-down” that turns the scale off after a
preset time of no activity. This helps conserve battery life. The preset time is
selectable from 1 minute to 60 minutes or it can be disabled so the scale
remains on continuously. The default setting is 5 minutes.

Section 3. Setup and Calibration Guide
Optional AC Power Connection:
The optional AC transformer has a power cord which plugs into the power jack
located under the battery compartment cover. WARNING: Installing this option
incorrectly will allow water to enter the scale and void the scale warranty.
To install this option:
1. Remove the battery compartment cover
2. Open the rubber plug in the battery compartment cover
3. Feed the AC jack and some cord through the rubber plug
4. Connect the AC jack to the Power socket inside battery compartment
5. Replace the battery compartment cover, leaving some slack on the AC
cord
6. Then push the rubber plug completely back into place, creating a seal
around the AC cord. NOTE: Regularly check the rubber plug to ensure a
proper seal is attained.
Optional RS-232 Connection:
The PC-500 has a standard RS-232 output. To use this feature, the optional
RS-232 cable is required. WARNING: Installing this option incorrectly will allow
water to enter the scale and void the scale warranty.
To install this option:
1. Remove the battery compartment cover
2. Open the rubber plug in the battery compartment cover
3. Feed the RS-232 cable jack and some cord through the rubber plug
4. Connect the jack to the RS-232 connector inside battery compartment
5. Replace the battery compartment cover, leaving some slack on the RS-
232 cord
6. Then push the rubber plug completely back into place, creating a seal
around the AC cord. NOTE: Regularly check the rubber plug to ensure a
proper seal is attained.

Optional Remote Zero Switch:
The PC-500 has an optional remote zero switch. To use this feature, the
optional Zero Switch is required. WARNING: Installing this option incorrectly will
allow water to enter the scale and void the scale warranty.
To install this option:
1. Remove the battery compartment cover
2. Open the rubber plug in the battery compartment cover
3. Feed the Remote Zero jack and some cord through the rubber plug
4. Connect the jack to the Remote Switch connector inside battery
compartment
5. Replace the battery compartment cover, leaving some slack on the RS-
232 cord
6. Then push the rubber plug completely back into place, creating a seal
around the AC cord. NOTE: Regularly check the rubber plug to ensure a
proper seal is attained.
Displaying Calibration and Audit Counters:
To display the values of the audit counters:
1. Turn on the scale.
2. Press and hold the ZERO button until the CX is displayed.
3. The scale will return to the weighing mode.

Calibration and Parameter Setup:
1. After turning on the PC-500, turn the scale over. If the battery compartment
has a lead and wire seal, you will require the assistance of a state certified
scale technician to retain legal for trade status. Remove the battery
compartment, and push the CAL button. The scale will enter the
Setup/Calibration mode.
2. Turn the scale upright, and the scale will briefly display the calibration and
parameter counters and will then display “div 2.5” (or “div 5.0“or “div 10”
depending on the scale resolution). Press the UNITS button twice. The
scale should now display “CAL 0”.
Fig. 2 Battery Compartment
3. Remove all weight from the scale platter. Press ZERO. Wait for the scale to
count down from “7” to “0”. If the scale detects motion, the count down will
restart. When finished, the display will display “CAL F5”.
NOTE: If “rg Err” appears on the display, the calibration zero is out of range.
Press ZERO to clear this error. Refer to the Calibration Troubleshooting
section for additional information.

4. The display will read CALXX, where XX is the span calibration weight in lb or
kg. The units annunciator to the right of the weight display will indicate the
current unit selected. Press ZERO to change the calibration unit.
5. Place full capacity on the platter and press ZERO. Wait for the scale to count
down from “7” to “0. If the scale detects motion, the count will restart. When
finished, the scale will return to the weigh mode and the calibration audit
counter will be incremented.
NOTE: If “SPnL” or “SPnH” appears on the display, the calibration span is out of
range. Verify that the calibration weight is correct and repeat the
calibration. Refer to the Calibration Troubleshooting section for
additional information.
6. Replace the battery compartment and tighten knobs.
Calibration Troubleshooting:
The following table shows the acceptable “Raw Counts” for no load and full load.
“Raw Counts” can be viewed through the last setup parameter. Refer to Section
4, Parameter Setup, for more information regarding parameter viewing.
If the scale’s raw counts are not within the ranges specified in the following table,
contact a Doran certified scale technician or Doran’s Technical Assistance
department at 800-262-6844.
Acceptable “Raw Counts”
for no load
Acceptable “Raw Counts”
for full load
-8,000 –100,000
30,000 –242,000