Optima Scale OP-900, OP-900B, OP-900A User Manual

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OP-900 SERIES INDICATOR

USER’S MANUAL

(OP-900A, OP-900B Series)

optimascale.com

TABLE OF CONTENTS

Safety Precautions 1

Preparations and Set Up

Features

Specications

Power Supply

Displays

Display and Key Descriptions

Operating Instructions

Calibration

7-9

Indicator Parameter Settings

Helpful Denitions

Connectors

18-19

RS232 Serial Output Format

4-20 mA Analog Output

Relay Output

Troubleshooting

Q&A

20-23

12-16

SAFETY PRECAUTIONS

For safe operation of the weighing indicator, please follow these instructions:

● Calibration inspection and maintenance of the indicator are prohibited by non-pro- fessional staff

● Please ensure that the indicator rests on a stable surface

● The indicator is a piece of static sensitive equipment; Please cut off power during electrical connections

● Touching the internal components by hand is prohibited

● DO NOT exceed the rated load limit of the unit

● DO NOT step on the unit

● DO NOT jump on the scale

● DO NOT use this product if any of the components are cracked

● DO NOT use for purposes other then weight taking

● To avoid damaging the battery do not keep charger plugged in once battery is fully charged

● Make sure the weight is not over the Max capacity as it could damage the load cell inside

● Material that has a static electric charge could inuence the weighing. Discharge the static electricity of the samples, if possible. Another solution to the problem is to wipe both sides of the pan and the top of the case with an anti-static agent

Please take anti-static prevention measures

Any accumulated charge on the body of the human operator should be discharged rst

before opening the protective container with ESDS devices inside. The discharge can be accomplished by:

● Putting a hand on a grounded surface or, ideally, by wearing a grounded Anti-static Wrist Strap and an Anti-static Mat

PREPARATION & SET UP

● Plug into a wall outlet to avoid interference with other wirings

● Turn on the indicator while there is no load

● Calibration may be required before weighing when the scale is initially installed or moved from a location

FEATURES

● LED or LCD display option

● Multiple weighing units: kg/lb (g/oz/lb:oz offered on LCD versions)

● Gross/Tare/Pre-Set Tare/Zero

● Multiple Hold functions

● Count weighing

● Accumulation weighing

● Overload / Underload indication

● Connects to multiple printers

● Splash proof keyboard and display

● Connects to a Remote Display/Scoreboard

● Power saving mode

● Ability to modify gravity based on different geographical locations

● RS232 output

● NTEP approved for 5,000 divisions

● Relay output (optional) and 4-20mA analog output (optional)

● Can connect to a PC or printer for data logging (optional)

● Wireless capability (optional)

● Rechargeable battery (optional)

Indicator Model Options

The OP-900 series consists of the OP-900A (LED) series and OP-900B (LCD) series. Options for rechargeable battery, stainless steel enclosure, washdown enclosure, computer connection, relay output and analog output can be added. Please contact sales@optimascale.com for a list of possible options.

Technical Parameters

● Accuracy class: 5000 e

● Resolution - Display: 30,000 ; ADC: 2,000,000

● Zero stability error: TK0 < 0.1μV//K

● Span stability error: TKspn < ± 6 ppm//K

● Sensitivity (internal): 0.3 μV / d

● Input voltage: -30 to +30mV DC

● Excitation circuit: 5 VDC, 4 wire connection, 6 load cell of 350ohm max

● AC power: AC 100-250V (use only the included 9V adapter supplied)

● Operation temperature: -10 °C ~ +40 °C

● Operation humidity: ≤90%RH

● Storage temperature: -40 °C ~ +70 °C (32-104°F)

SPECIFICATIONS

FIGURE 1: INDICATOR MEASUREMENTS

POWER SUPPLY

AC Adapter

If the indicator is powered by an adapter, plug the adapter directly into the “DC” pin located at the bottom of the indicator. We recommend to plug into a wall outlet to avoid interference with other wirings.

Battery (Optional)

If you have an indicator with the rechargeable battery option, please charge the internal battery fully before rst time use. A 110 to 220V AC adapter should be provided with your indicator. Please use only the AC adapter provided to prevent damage to your indicator. To keep the battery in best condition, fully discharge the battery every month by leaving the indicator on until the indicator powers off, and then recharge fully. If the battery is not going to be used for a long period of time it is recommended to remove it to avoid leakage.

On OP-900A

● When the Battery is low the battery indicator light ashes red

● During charging the red light will stay lit

● The light will turn green once fully charged

ON OP-900B

● symbol will indicate battery’s charge

● symbol indicates that the battery needs to be charged

OP-900A (LED)

OP 900B (LCD)

DISPLAY AND KEY DESCRIPTION

ON/OFF Powers the Indicator On or Off if held for 2 seconds HOLD Holds the weight (5 Hold options; can be changed in parameter settings) TOTAL 1. Accumulates weights

2. Works with “Print” to perform the accumulation function and check the accumulation result

UNITS Shifts between weighing units COUNT Use the scale to count product based on a sample weight TARE 1. Resets the scale to zero when there is something on the scale

(ex. Tare out the weight of a pallet to weigh only the product on it)

2. Clears the tare to see the gross weight (pallet + product)

ZERO Zero’s the scale PRINT Print data

The scale is at zero

The scale is stable

Gross Shows you are in Gross weight mode (includes tare); default mode Net Shows you are in Net weight mode (weight without tared weight) pcs Shows you are in Counting mode total Shows you are in Accumulation mode hold Shows you are in Hold mode lb The weight is shown in pounds kg The weight is shown in kilograms battery Flashes red = low battery, Solid red = charging, Green = fully charged Over Flashes when weight is higher than set alarm parameter Accept Flashes when weight is within the set alarm parameters Under Flashes when weight is lower than set alarm parameter

Power

Back

Save and Exit

Arrow keys

Return/Enter

OPERATING INSTRUCTIONS

Power On

● Turn on the power by pressing the power button for 2 seconds. Once on, the scale will ash the voltage and then begin to auto-check and count down from 0-9

sequentially before entering the weighing mode

Note: Anything on the scale before powering on will automatically be tared out.

Zeroing

● The zero function is used only when the scale is empty and is not at gross zero due to material build up

● Pressing the ZERO key will reset your scale to 0

● Depending on what your manual zero range parameter is set to, you can zero out any number within your set selection, after that you will receive an error and will need to tare out the weight

Unit Selection

● To switch between measuring units ((kg/g/lb/oz/lb:oz) press the UNITS key

Tare Function

● The Tare function is used when you only wish to see the current change in weight, not the entire amount of weight that is on the scale

● When the indicator is in gross mode (gross light is shown) pressing the TARE key will Tare the current weight on the scale and enter the net mode (net light shown)

● For example if you are using a container add the container to the scale, press tare and the display will show the tare symbol

● Add your product to the scale to weigh without the weight of the container

● To exit Tare mode press the TARE key again to enter gross mode and you will see the total weight of the container and the product

Note: If you remove the container the scale will show the minus weight of the container

To use a pre-set tare weight

● Press and hold the TARE key for 2 seconds

● Input the tare weight using the arrow keys

● Press print key to conrm

and reset back to 0

Counting Function

● The counting function is used to count a high volume of identical parts. You can do this by setting a sample and then either adding to the sample or taking away from the sample to count the number of objects on the scale

● In weighing mode: Put a sample weight on the scale (Sample options are 5, 10, 20, 50, 100, 200, 500)

● Then press the COUNT key to go to the counting mode (“pcs” will light up)

● It will then display the sample number (ex. the up or down arrows

● Press the PRINT key to conrm your sample number

● The scale is now ready to start counting, load your product on the scale and the indicator will show the quantity

● To exit counting mode press the COUNT key

● If you want to count a different product hold the PRINT and COUNT key together and the sample pieces will reset back to zero

PCS 0

) which you can change using

Accumulation

● The accumulation function is used to add multiple weights and total them together

● In weighing mode load the rst weight, once stable press the ACCUM key to enter the accumulation mode. The “total” light will display

● Remove weight and press ZERO key before adding the second weight to the scale

● Once stable press ACCUM key to add the weight to the accumulated total

● Press ZERO Key before adding the next weight to the scale

● Repeat previous step until all desired weights have been added to the total (max 999 times)

● When you are done and want to display the accumulated total, press the ACCUM and PRINT key together. The accumulated number “

you are adding together) will ash on the display followed by the total

● The total will display by ashing between 2 sets of numbers

● There are 8 digits in total, the display will ash 4 at a time, the rst 4 on the left and

the last 4 on the right. For example if the rst 4 digits are “0012” and the last 4 digits

are “3456” the actual weight is 001234.56 or 1234.56 lbs/kg

● If you want to print the accumulated total, hold the PRINT key for one second while the last 4 digits of the total are shown

● To exit accumulation mode, wait for the last 4 digits to the right of the screen to appear, and then press and hold the ACCUM key for one second

● “

CLr n

● If NO you do not want to clear the accumulated total, then keep “

● If YES you do want to clear the accumulated total, then use the arrow key to change to “

● Finally, press the PRINT key to select exit accumulation mode

” will be displayed, asking you if you want to keep the data?

CLr y

”.

###” (the number of weights

CLr n

”.

Hold

There are 4 different hold functions you can choose from in the C11 parameter

1. Peak Hold: Grabs the highest weight

force)

● Press the HOLD key then add weight to the scale

● The indicator will show the highest weight it recorded and hold it on the screen until a higher weight is placed on the scale

2. Manual Hold: Grabs the current weight and holds it so it will not change/uctuate

● While weighing, press HOLD and the indicator will hold the current weight on the screen until HOLD is pressed again

3. Auto Hold: If the weight on the scale is above 20d (20 x division) and is stable, the indicator will hold that weight on the screen for 3 seconds then go back to general weighing

● Pressing the hold key is unnecessary, holding is done automatically when the scale is stable

4. Average Hold: Used for animal weighing, the indicator will display the average weight sampled from 3 seconds

● Add livestock to scale and press HOLD

● Indicator screen will show “ from those 3 seconds

● Press HOLD again to exit holding mode

LOC

(for materials testing, ie. tension and pulling

” for 3 seconds, then display the average weight

● If the indicator is connected to a printer and the weight on the scale is stable press the PRINT key to print the current weight

● In accumulation mode hold the PRINT key for one second when the last 4 digits of the total weight are shown to print the total weight

Note: In tare mode the printer can not print if negative weight is shown

CALIBRATION PROCEDURE

1. Turn on the scale by holding ON/OFF for 2 seconds.

2. Press HOLD and PRINT together to access the setup menu.

3. If done correctly, the display should now show

4. Press PRINT to access the C1 channel. The display should show [

5. Press ZERO to choose which unit you want to calibrate in (1 = kg, 2 = lb).

6. Press PRINT to set the value. The display will now show

7. Press PRINT to access the C2 channel. The display should show [

8. Press ZERO to change the setting to the decimal places desired (The C2 channel is used to adjust the decimal point on the scale. A value of 1 means there is one digit behind the decimal point.)

9. Press PRINT to set the value. The display will now show

10. Press PRINT to access the C3 channel. The display should show [

11. Press ZERO to cycle through the values until the desired graduation appears. (The C3 channel adjusts the divisions on the scale. A value of 1 selected and C2 set to 1, the scale will read in 0.1 lb. increments.)

12. Press PRINT to set the value. The display will now show

13. Press PRINT to access the C4 channel. The display will show [######].

14. Enter in the maximum capacity you want to use for this scale by using UNIT and COUNT values down and up. (The C4 channel is used to enter in the max capacity of the

to move the cursor left and right, and TARE and ZERO to move the

C01

#].

C02

C03

C04

scale; Make sure this doesn’t exceed the max capacity of the scale; Max capacity divided by the increment set in C02 and C03 above cannot exceed 5000.)

15. Press PRINT to set the value. The display will now show

16. Press PRINT to access the C5 channel. The display should show [

17. The C5 channel calibrates zero on the scale. Make sure the scale is empty.

18. Press ZERO to change the value to 1.

19. Press PRINT . The display will count down from 10-1 while the scale is

calibrating zero. When the display shows 0 the zero calibration is complete.

OP-900 offers 2 calibration methods, Single Point which uses one weight to calibrate or Linear Calibration, which uses multiple (2-7) weights for a more accurate calibration.

To Calibrate using only 1 calibration weight (Single Point Calibration)

20. Press PRINT to continue. The display will now show

21. Press PRINT to access the C06 channel. The display will show [

22. The C6 channel is used to calibrate the scale with a known weight. Press ZERO to set the value of C6 to [ then show [######].

C6 1

]. Press PRINT . The display will ash

C05

C06

C5 0

C6 0

SPAN

, and

23. Enter the calibration weight value you will use (at least 10% of max capacity you set in C04 by using UNIT and ZERO

24. Place the calibration weight you have on the empty scale and press PRINT .

25. The scale will count down from 10 to 0. Once 0 has been reached, the display will show

26. Press PRINT to continue. The display will now show

27. Press ACCUM to save and exit the setup menu.

28. The scale has now been calibrated. The display will show the value of the calibration weight on the scale.

29. If the scale does not show the value of the calibration weight, check that the feet on the platform are not screwed in too tightly, and verify that the platform is level.

30. Unload the scale; the display should read

31. If the scale does not display 000000, check that the feet on the platform are not screwed in too tightly, and verify that the platform is level.

CALEnd

move the values down and up.

and COUNT to move the cursor left and right, and TARE

000000

C07

To Calibrate using only multiple calibration weights (Linear Calibration)

1. Press PRINT to continue. The display will now show

2. Press PRINT to access the C06 channel. The display will show [

3. The C6 channel is used to calibrate the scale with a known weight. Press ZERO to set the value of C6 to [ and then show [

4. Press ZERO to enter the number of weights you want to use (2-7); the more you use, the more accurate the calibration will be. (an example of 2 will be used)

5. Press PRINT to set your value. The screen will ash [

6. Enter the lowest calibration weight value you will use (at least 10% of max capacity you set in C04) by using UNIT and right, and TARE

7. Place the calibration weight you have on the empty scale and press PRINT .

8. The scale will count down from 10 to 0. Once 0 has been reached, the display will

show he screen will ash [

9. Enter the next calibration weight value you will use by using UNIT and COUNT to move the cursor left and right, and TARE and up.

10. Place the calibration weight you have on the empty scale and press PRINT .

11. The scale will count down from 10 to 0. Once 0 has been reached, the display will show he screen will show

12. Then follow steps 26-31 on the single point calibration instructions

LnE 2

C6 2

and ZERO move the values down and up.

dbno02

CALEnd

]. Press PRINT . The display will ash

and COUNT to move the cursor left

] then [

000200

and ZERO move the values down

C06

dbno01

]

C6 0

] then [

SPAN

000100

]

INDICATOR PARAMETER SETTINGS

The parameter settings menu has a calibration section (C01 to C07 explained above) and a

parameter settings section (C08 and up).

To access the calibration section the seal switch (located at one corner of the PCB) must be

OFF. This will allow access to all C01 and up settings. If the seal switch is ON, then only C08 and up

can be accessed by the user. If you break the ofcial seal by opening the back of the indicator to

access the seal switch, you may need to have the indicator recertied. Be sure to adjust the seal

switch back to the original setting after calibration/conguration has been performed.

To enter calibration/parameter settings, follow the procedure below:

1. Make sure the unit is set to either kg or lb

2. Press and hold the HOLD and PRINT key at the same time for 2 seconds

3. Navigate through the settings (C01 to C45) as shown in the table 4 below by using the arrow

keys and return keys as labeled under each indicator button

4. Press the PRINT key to enter/edit the parameter setting

Press the ACCUM key to save and exit settings at any time

Table 1. Indicator Parameter Settings

Function Parameter Settings/Options

Weighing Unit

Decimal Setting

Graduation Setting (readability of the least

signicant digit)

Maximum Capacity

C01

C02

C03

1 = kg 2 = lb 3 = gram 4 = oz Note: for calibration only kg or lb are allowed

0 = no decimal 1 = #.# 2 = #.## 3 = #.### 4 = #.####

options: 1/2/4/10/20/50 Example with no decimal places (ie C02=0) 1 = 1 lb 2 = 2 lb 5 = 5 lb 10 = 10 lb 20 = 20 lb 50 = 50 lb

set max capacity ex. 100kg = 0100.00

C04

Zero Calibration

C05

Calibration

C06

0 = zero calibration 1 = set the zero calibration (Please ensure scale is empty and the stable light is on)

0 = calibration not needed 1 = Ready to calibrate with one calibration weight 2 = Ready to calibrate using multiple calibration weights (Linear) 3 = Sensitivity Output

Function Parameter Settings/Options

Restore Default Settings

Warning Tone

Automatic Power Off

Power Saving Mode

Hold Function

Unit Conversion

C07 C08 C09

C10

C11

0 = do not restore 1 = restore to default settings

0 = turn off warning tone 1 = turn on warning tone

0 = turn off auto power off 10 = power off automatically if no change within 10 minutes 30 = power off automatically if no change within 30 minutes 60 = power off automatically if no change within 60 minutes

LED Version OP900A:

0 = turn off power saving setting 3 = turn off display if no change within 3 minutes 5 = turn off display if no change within 5 minutes

LCD Version OP900B:

0 = turn off the backlight 1 = backlight only when the weight changes or keyboard is pressed 2 = constant backlight

0 = turn off hold function 1 = Peak hold - Grabs the highest weight 2 = Manual hold - Grabs the current weight 3 = Auto hold - Automatically holds data when stable 4 = Average hold - for animal weighing, averages the weight from a sample of 3 seconds 5 = Auto Average hold - Average hold without the need to press the hold key

* See table 2

C12

Upper Limit Alarm

Set upper limit within the max. capacity

C13

Lower Limit Alarm

Set lower limit within the max. capacity

C14

Inner Code Display

check the inner code (raw data)

C15

Set Date

Set date from left to right: year/month/day

C16

Set Time

Set the time from left to right: hour/minute/second

C17

Communication Setting

Baud Rate

C18

C19

Set the serial interface data output method: 0 = Turn off serial interface data output 1 = Continuous sending mode, connect remote display 2 = Print mode, connect printer 3 = Command request mode, connect computer. 4 = PC continuous sending mode, connect computer 5 = PC/big display, continuous sending mode 6 = Print to adhesive label printer 7 = Print to Zebra adhesive label printer

0=1200 (for remote display) 1=2400 2=4800 3=9600

Function Parameter Settings/Options

Manual Zero Range

Initial Zero Range

Zero Tracking

Zero Tracking Time

Overload Range

C20

C21

C22

C23

C24

0 = turn off manually zero setting

1 = ±1% max capacity 2 = ±2% max capacity 4 = ±4% max capacity 10 = ±10% max capacity 20 = ±20% max capacity 100 = ±100% max capacity

0 = no initial zero setting

1 = ±1% max capacity 2 = ±2% max capacity 5 = ±5% max capacity 10 = ±10% max capacity 20 = ±20% max capacity 100 = ±100% max capacity

0= turn off zero tracking

0.5 = ±0.5d d = division

1.0 = ±1.0d

2.0 = ±2.0d

3.0 = ±3.0d

4.0 = ±4.0d

5.0 = ±5.0d Note: the zero tracking range can not be bigger than manual zero range

0 = turn off zero tracking time 1 = 1 second 2 = 2 seconds 3 = 3 seconds

00 = turn off overload range 01-99d = overload range setting d = division

Negative Display

Standstill Time

Standstill Range

Digital Filter

(for ltering moving

weight such as animals)

C25

C26

C27

C28

0 = -9d

10 = -10% max. capacity 20 = -20% max. capacity 50 = -50% max. capacity 100 = -100% max. capacity

0 = quick 1 = medium 2 = slow

1 = 1d d = division 2 = 2d 5 = 5d 10 = 10d

0 = turn off dynamic lter 1 = 1 digital lter strength 2 = 2 digital lter strength 3 = 3 digital lter strength 4 = 4 digital lter strength 5 = 5 digital lter strength 6 = 6 digital lter strength Note: The higher the number, the higher the lter strength

Function Parameter Settings/Options

Noise Filter

C29

Print Time and Date

C30

Analog Output Setting

C31

Calibrate Current

0 = turn off noise lter 1 = 1 digital lter strength 2 = 2 digital lter strength 3 = 3 digital lter strength

0 = yy.mm.dd 1 = mm.dd.yy 2 = dd.mm.yy 3 = yy.mm.dd

0 = 0 - 5V ouput

1 = 4 - 20mA output 4 - 20mA current

C32

Relay Output Setting

Gravity of Calibration Location

Gravity of Destination

C33

C36

0 = turn off relay output 1 = turn on relay output function 1 2 = turn on relay output function 2 3 = Reserved menu

9.7000 - 9.9999

C37

Version No.

C38

Print Mode

C41

Print Carriage Return

0 = auto mode 1 = gross mode 2 = tare mode

0 - 9 (How much space between print outs)

C42

Space Print

0 - 9 (Where the data prints on the paper: 0 = left ; 9 = right)

C43

Date Print

C44

Time Print

C45

0 = do not print the date 1 = print the date

0 = do not print the time 1 = print the time

Table 2. Unit Conversion Parameter Settings

Parameter Settings Units Available

C01= 3 & C12= 0 gram only

C01= 4 & C12= 0 oz only

C01= 1 & C12= 0 kg only

C01= 1 & C12= 1 kg/lb

C01= 1 & C12= 2 kg/lb/oz

C01= 1 & C12= 3 kg/lb/lb:oz/oz

C01= 1 & C12= 4 kg only

C01= 2 & C12= 0 lb only

C01= 2 & C12= 1 lb/kg

C01= 2 & C12= 2 kg/lb/oz

C01= 2 & C12= 3 kg/lb/lb:oz/oz

C01= 3 & C12= 4 lb only

Table 3. Default Parameter Settings

Function Parameter Default Setting

Weighing Unit C01 1

Decimal Setting C02 0

Graduation Setting C03 1

Maximum Capacity C04 1000

Zero Calibration C05 0

Calibration C06 0

Restore Default C07 0

Warning Tone C08 1

Automatic Power Off

Power Saving Mode C10 0

Hold Function C11 0

Unit Conversion C12 1

Upper Limit Alarm C13 000000

Lower Limit Alarm C14 000000

Inner Code Display C15

Set Date C16

Set Time C17

Communication Setting C18 0

Baud Rate C19 3 (9600)

Manual Zero Range C20 10

Initial Zero Range C21 10

C09 0

Zero Tracking C22 0.5

Zero Tracking Time C23 1

Overload Range C24 9

Negative Display C25 10

Standstill Time C26 1

Standstill Range C27 2

Digital Filter C28 0

Noise Filter C29 2

Print Time and Date C30 0

Analog Output Setting C31 1

Calibrate Current C32 4

Relay Output Setting C33 1

Multi-connection add. C34 0

Wireless Communication

Gravity of Calibration Location

Gravity of Destination C37 9.7936

C35 6

C36 9.7936

HELPFUL DEFINITIONS

Division: The amount of increments a scale offers. How accurate the scale can be

Capacity: the maximum amount the scale can contain

Initial Zero Range: The percentage of weight allowed on the scale when indicator is powered

on that will automatically zero.

example: If initial zero range is set to 10% of the max. capacity and your max. capacity is

100lbs, you can place up to 10lbs of weight on the scale and when the indicator is powered on, it will automatically zero out the weight.

Manual Zero Range: The percentage of weight allowed on the scale where the indicator will let you manually zero (anything above this percent will be tared)

Zero Tracking Range: A subset to the manual zero range; if the weight on the scale is not stable, the zero tracking range still allows you to zero within a set division of the scale

Zero Tracking Time: A subset to the zero tracking range, it is the time allowed for the scale to fall within the zero tracking range tolerance and still qualify to be zero’d

Overload Range: Weight allowance that is out of the set calibrated range. Adds a tolerance to the calibrated max. capacity without having to recalibrate. example: If your scale has a max. capacity of 1000lbs with a division of 1 and you set the overload range to 60, you can add 1060lbs of weight to the scale without it displaying an error code

Negative Display: How far you can go in the negative direction before displaying an error code

Standstill Time: How fast the scale will stabilize

Standstill Range: How much the scale can uctuate before being determined stable

Digital Filter: For ltering moving weight, such as animals, It changes how sensitive

the scale is to variations in movement.

Noise Filter: A lter for how susceptible the scale is to general variations

Baud Rate: The rate at which information is transferred in a communication channel.

example: In the serial port context, “9600 baud” means that the serial port is capable of transferring a maximum of 9600 bits per second.

CONNECTORS

Connecting load cells to the indicator

● The indicator can connect with 6 load cells of 350Ω at most

● 4 wire or 6 wire load cell connections are both okay

● Please contact us directly if you have other special needs for your application

● There are two connection methods between the load cell and indicator

Quick Disconnect as shown below:

FIGURE 2: QUICK DISCONNECT CONNECTION DIAGRAM

Hardwire (Using Inner Terminal Block Connection:

Note: Make sure you follow all the anti-static rules to avoid damage to your indicator

● Excitation voltage: 5V DC

● Largest output current: 120 mA

● Excitation circuit: 5 VDC, 4 wire connection, 6 load cell of 350ohm maximum

● Open the back cover of the weighing indicator, and insert signal cable to the

terminal block (see gure 3); Make sure the screw on terminal block is xed tightly

FIGURE 3: INNER TERMINAL BLOCK CONNECTION DIAGRAM

Table 4. Wiring Color Code

Signal Name Color Code Description

+Exe/ +EX RED Positive excitation voltage to load cell

+IN / +SIG GREEN Positive output signal from load cell

HD / SHLD YELLOW/THICK BLACK Shield Wire

-IN / -SIG WHITE Negative output signal from load cell

-EXC / -EX BLACK Negative excitation voltage to load cell

DB9 Connection (9 pin Serial Connector)

The DB9 9 pin serial connector is used for different purposes depending on the indicator model

● Figure 4 shows the pin assignment on the DB9 9 pin connector

FIGURE 4: DB9 SERIAL CONNECTOR PINOUT

There are 3 Output formats to choose from

1. RS232 Serial Output Format (Standard)

2. 4-20 mA Analog Output (Optional)

3. Relay Output (Optional)

RS232 SERIAL OUTPUT FORMAT

Follow the pin out of Table 5 below to connect the indicator the RS-232 Serial device

Table 5. DB9 Pin Description

DB9 Pin Denition Function

2 TXT Transmit Data

3 RXD Receive Data

5 GND Ground Interface

The serial output format depends on the settings for parameter C18. The serial output consists of a string of ASCII characters. Here is a list of the serial parameters

● 8 data bits

● 1 stop bits

● No parity

● No handshaking Note: With the RS232 Output option we have data logging software available as seen in Figure 5.

FIGURE 5. DATA LOGGING SOFTWARE

Below are the formats of the serial output

● C18=0 - Turn off serial interface data output

● C18=1 - Continuous sending mode, connect 2nd big display

● C18=2 - Print mode, connect printer

● C18=3 - Command request mode, connect computer.

● C18=4 - PC continuous sending mode, connect computer

● C18=5 - PC/big display, continuous sending mode

● C18=6 - Print to adhesive label printer

● C18=7 - Print to Zebra adhesive label printer

Remote Display Continuous Sending Mode (C18=1)

For use with a Scoreboard/Remote Display Note: Baud Rate must be set to 1200 (C19 = 0)

Output Continuous Format

S T X

1 2 3 4 5 6

0 1 2 Decimal point position 1 0 0 XXXXXX0 0 1 0 XXXXXXX 1 1 0 XXXXX.X 0 0 1 XXXX.XX 1 0 1 XXX.XXX

0 1 X1 1 0 X2

X X X X X X X X X X X X

State A

Bits0,1,2

Bits3,4 Division

C R

C K S

State B

BitsS function Bits0 gross=0, net=1 Bits1 Symbol: positive=0, negative=1 Bits2 Overload (or under zero)=1 Bits3 dynamic=1 Bits4 unit: lb=0, kg=1 Bits5 Constant 1 Bits6 Constant 0

State C

Bit2 Bit1 Bit0 unit

0 0 0 Kg or lb 0 0 1 g 0 1 0 t

Bit 3 printing=1 Bit 4 Extend display=1 Bit 5 Constant 1 Bit 6 Constant 0

Print Mode (C18 = 2)

For printing on a non-adhesive ticket printer. Parameters 16, 17, 30, & 42-45 all effect your ticket print out. Normal weighing ticket printout example:

Date: 05/01/2017 Time: 11:30:52 Net: 25.6lb Tare: 10.3lb Gross: 35.9lb

Accumulation weighing ticket printout example:

ate: 05/01/2017

D Time: 11:30:52

n001 15.4lb

n002 17.2lb

n003 35.6lb

Total 68.2lb

Command Request Mode (C18=3)

In this mode, the indicator can recieve ASCII commands as listed below

Command Name Function

T Tare Save and clear tare Z Zero Zero gross weight P Print Print the weight R G.W/N.W Read gross weight or net weight C Kg/lb Kg/lb conversion

G G.W Check gross weight at net weight mode

The R command will trigger the indicator to output the followind data format:

<STX> <POL> XXXXX.XX <SP> <LB/KG> <SP> <GR/NT> <CR> <LF>

Start Transmission

Polarity: <SP> = Positive “-” = Negative

Weight Data Space Units:

lb = punt kg = kilogram pcs = pieces*

Space

Gross/Net: GR = Gross NT = Net

Carriage Return

Line Feed

Computer Continuous Sending Mode (C18=4)

, , CR LF

{

S 1 S 2 S 3 Data S 4

S1: weight status, ST=standstill, US=not standstill, OL=overload S2: weight mode, GS=gross mode, NT=net mode S3: weight of positive and negative, “+” or “-” Data: weight value, including decimal point S4: “kg” or “lb” CR: carriage return LF: line feed

{

PC or Remote Display Continuous Sending Mode (C18=5)

<STX> <POL> XXXXX.XX <L/K> <G/N> <STAT> <CR> <LF>

Start Transmission

Polarity: <SP> = Positive “-” = Negative

Weight Data

Units: lb = punt kg = kilogram pcs = pieces*

Gross/Net: GR = Gross NT = Net

Carriage

Status:

<SP> = Valid

M = Motion O = Over/under range

Return

Line Feed

Print to Adhesive Label Printers (C18=5) & (C18=6)

The following are the printing formats:

Date: XX.XX. XX (yy.mm.dd)

Date: 05/01/2017 Time: 11:30:52 Net: 25.6lb Tare: 10.3lb Gross: 35.9lb

Optima Label Printer Zebra Label Printer

Time: XX.XX.XX (hh.mm.ss)

NET 6.00kg (net weight)

TARE 2.88kg (tare)

GROSS 8.88kg (gross weight)

4-20 mA ANALOG OUTPUT (OPTIONAL)

The 4-20 mA analog output of the OP-900 scale is a voltage sourcing sensor that will output current which is proportional to the calibrated scale’s weight range (i.e. 4 mA = 0 LBS and 20 mA = 10,000 LBS). It is important to note, that this is a sourcing output sensor (i.e. the sensor will source

9VDC with an output current range of 4-20

mA). Unlike many other “loop powered” type 4-20 mA sensors, an external supply voltage should not be connected to the unit’s 4-20 mA circuit, however, the ground connection (pin 6) of the DB-9 connector will need to be connected to the same ground as the data acquisition device which will be responsible for interoperating the 4-20 mA signal. This ground connection is imperative, as both the data acquisition device’s

power supply and the scale’s internal 9VDC power supply will

need to be on the same ground plane for the output current to

FIGURE 6. CONNECTION DIAGRAM

be synced and measured correctly. Please reference Figure 6 as a visual clarication on

how to connect your scales 4-20 mA output to a data acquisition device.

Below is a list of important notes when using the indicator with the 4-20 mA option

● Resolution: 1/1000

● Outside Load: 100-350ohms

● Inside connection: load input port pin “1” of J2, ground port pin “GND” of J2

● Outside connection: load input port pin 1 of DB9, ground port pin 6 of DB9

● To test the connection, connect a 250 ohm load; Locate a volt meter, and probe across the 250 ohm load. As the weight input to the indicator varies, the voltage of the volt meter will change accordingly

● Pressing the TARE key will reset to output current to 4mA

● 0-20mA output can be set by setting parameter C31 to 0

● Please note that this option will disable the RS232 weigh data output (serial ASCII data) that comes in the standard indicator

Calibration:

● Press PRINT and HOLD key to go into conguration mode

● Go to C32 and press PRINT key

● The display should show [out-4] and output should be at 4mA

● Press the up/down arrow keys and the [out-#] will increase/decrease

Note: X corresponds to the output current. For example if out-12 is displayed, then 12mA should be the output. If not, press the left and right arrow key to adjust/calibrate

RELAY OUTPUT (OPTIONAL)

● The indicator can output 4 signals, which when connected to outside equipment, can perform an automatic control function and an upper/lower limit alarm function.

● Change parameter setting C33 following Table 6 below:

Table 6: Relay Output Parameter Setting

Output Port Port Denition Function

Out1 Turn off output function No Output Signal

C33=0

C33=1

C33=2,3 Preserved, no function

Out2 Turn off output function No Output Signal

Out3 Turn off output function No Output Signal

Out4 Turn off output function No Output Signal

Out1 Turn on overload control function Output overload control signal

Out2 Turn on compliance control function Output compliance control signal

Out3 Turn on under-load control function Output under-load control signal

Out4 Turn on stable control function Output stable control signal

Table 7 below shows the DB9 port pinout for the relay output option. Please note that this is optional and only available for the OP-900 indicator ordered with this option.

The relay output option will disable the RS232 weigh data output (serial ASCII data) that comes in the standard indicator.

Table 7: Relay Output Pin Denition

DP9 Pin Denition Port

1 1st output signal pin Out1

6 1

2 2

7 2

3 3

8 3

4 4

9 4

output signal pin Out1

output signal pin Out2

output signal pin Out3

output signal pin Out4

Rating:

AC 250V 3A DC 30V 3A

Error Codes

Error Reason Solution

UUUUUU

nnnnnnn

ERR1

ERR2

ERR3

ERR4 ERR5 ERR6

TROUBLESHOOTING

1. Overload

2. Wrong connection with load cell

3. Load cell has quality problem

1. Calibration is no good

2. Wrong connection with load cell

3. Load cell has quality problem

During calibration, weight is not used or the weight is above the max. capacity

During calibration, the weight is below the minimum required weight

During calibration, the input signal is negative

During calibration signal is unstable After the platform is stable, start calibration

EEPROM Error Change PCB

Exceed Zero Range See Q&A section

1. Reduce the weight

2. Check load cell connection

3. Inspect load cell; Check the input/output

4. See Q&A section

1. Make sure scale is level

2. Check load cell connection

3. Check load cell input and output resistance

4. See Q&A section

Use correct weight within the dened range

The calibration weight minimum is 10% of

the max. capacity set in C04. Recommended to use 60%-80% of max. capacity if possible

1. Check all wire connections

2. Check load cell

3. Recalibrate

4. PCB replacement needed if steps 1-3 fail

Q&A

Q: The scale does not turn on A: Make sure the power cord is plugged in, and that there is power. One easy way to

test this is by connecting another appliance to the same outlet and see if it’s

operational Q: The reading goes negative when a load is applied A: Try interchanging the Sig+ and Sig- wiring connected to the load cell and/or

junction box (if one is used) Q: How do I resolve ERR6 error? A: Please follow the procedure below:

1) Turn on the indicator and make sure nothing is on the scale, and that the scale

is level and not wobbling

2) Press and hold the “PRINT and HOLD” key simultaneously for a few of seconds

3) The screen will read “C01”

4) Using the arrow keys, change C01 to C20. You have to change the 1st digit

from 0 to 2 rst before you can change the 2nd digit 1 to a 0.

5) Press “PRINT” key to enter C20 parameter

6) Change the value of C20 on the right to 100 if possible using the up arrow key.

If 100 is not available change to 20

7) Press “PRINT” key to enter your selection

8) The screen will read “C21” now

9) Press “PRINT” key to enter C21 parameter

10) Change the value on the right of C21 to 100 if available, 20 if not

11) Press “PRINT” key to enter your selection

12) he screen will read “C22” now

13) Press “TOTAL” key to save and exit

14) Power the indicator off and then on, and see if this resolves the ERR 6 issue.

If not, then following the Q&A answers below for resolving “nnnnnn”and “uuuuuu”

errors Q: How do I resolve “nnnnnn” and “uuuuuu” error? A: 1) Check to see if the cable that runs from the indicator to the junction box is

damaged. If it is, replace the cable.

2) Open up the junction box (if available) and check to see if there is any water

damage. If so, replace the junction box

3) Make sure all the wires on all 5 terminal blocks (5 wires on each terminal block)

are not loose. Re-tighten the screws even if the wires seem to be connected

4) Recalibrate

5) If steps 1-4 do not work, there is a possibility one or more load cells are

defective (consult with support@optimascale.com for further instructions)

Please e-mail sales@optimascale.com for any sales related questions.

Please e-mail support@optimascale.com for any support related questions.

Don’t forget to visit our website at:

optimascale.com

Optima Scale OP-900, OP-900B, OP-900A User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual