Optima Scale OP-904 User Manual

OP-904 PANEL MOUNT

INDICATOR USER’S MANUAL

optimascale.com

TABLE OF CONTENTS

Safety Precautions 1

Features

Specications

2

3

Display and Key Descriptions

Operating Instructions

Rear Panel

General Functions

Function Settings

Parameter Settings

6

7

8

9-10

5

4

Calibration Settings

11-14

Check Weighing Conguration

Cable Connection Manual

Troubleshooting

Contact Us

19

19

16-18

15

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

● 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

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

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

1

FEATURES

● LED 6 digit display

● Multiple weighing units: kg/lb/t

● Gross/Tare/Hold/Zero

● Check weighing feature

Technical Parameters

Hardware construction features

● Power supply: 24vDC

● Load cell excitation voltage: 5vDC±5%

● Load cell number: up to eight 350Ω

● Load cell sensitivity: 0~3.0mv/v

● Load cell connections: six wire

● Keyboard: six key

● Display: six digits red 7 segment LED display

● Relay output: 4 output, AC250v 5A

● Input: isolation voltage 2500V

● Analog output: 4~20mA/0~5v

● Serial port: RS232/RS485, baud rate 600~19200bit/s

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

● Operation humidity: ≤90%RH

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

● Housing dimension: 92 x 45mm

● Front panel dimension: 102 x 55mm

● Trepanning dimension: 93 x 46mm

Software features

● Max sampling speed: 120SPS

● AD digital lter

● Digital calibration

● Batching or dosing functions

2

2.16”

SPECIFICATIONS

FIGURE 1: INDICATOR MEASUREMENTS

1.78”

5.46”

4”

5.6”

6.1”

3

DISPLAY AND KEY DESCRIPTION

|/
ZERO Zero’s the scale
TARE 1. Resets the scale to zero when there is something on the scale

M1 Displays Gross/Net weight
MODE Setpoint parameter set
ENTER Enter key

Zero Indicates that you have zero’d the scale
Motion The weight on the scale is unstable
Gross Shows you are in Gross weight mode (includes tare); default mode
Net Shows you are in Net weight mode (weight without tared weight)
kg The weight is shown in kilograms
t The weight is shown in tons
lb The weight is shown in pounds
Power Flashes red = low battery, Solid red = charging, Green = fully charged
Over Flashes when weight is higher than set alarm parameter

Powers the Indicator On or Off if held for 2 seconds

(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)

Accept Flashes when weight is within the set alarm parameters
Under Flashes when weight is lower than set alarm parameter

Save and Exit

Arrow keys

Return/Enter

4

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

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 gross light and reset back to 0

● 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

5

REAR PANEL

Connection denition:

Power: POW+ POW- for 24VDC, AC1 AC2 for 220VAC

Load cell: EXC+ SEN+ EXC- SEN- SIG+ SIG

Serial communications: TXD RXD GND for RS232, A B for RS485

Analog output: Vout Iout GND

Relay output: J1 J1 J2 J2 J3 J3 J4 J4

Input: YX1 YX2 YX3 YX4 YXCOM 0vTo 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

6

GENERAL FUNCTIONS

Function setup and operation procedure:

Function Operation Display Remark

Enter calibration mode Turn the calibration switch to “ON” 01 CSP 4
Enter function setting

Check weighing setpoint
parameter setting
Enter to test mode

Reset all parameters back
to default
Reset general function
parameters back to default

Parameter Settings, Key meaning

Key Meaning

Save and Exit

Move the ashing digit to the left

Move the ashing digit to the right

Weight mode, press

Weight mode, press

Turn power on, press
Turn power on, turn the calibration
switch to “ON”, press

Turn power on, press

and

and

and

and

01 FnC 3.3

1.FinAL 5

1. dsp 7.1

i.ALL 7.2

1 FnC 7.2

Increase the ashing digit

Decrease the ashing digit

Conrm

7

FUNCTION SETTINGS

Press and at the same time to enter the function settings
The screen will display “01 FnC” for function setting
Press
Press
Press
Press
Press
Press

to display “02 232” for serial port interface
to display “03 Sq ” for weight comparison procedures
to display “04 AnL” for analog current output
to display “05 In ” for external input interface

to enter the next menu level

to save and exit out of this menu and restart

and

Weighing Mode

01 FnC

01 FnC

01 FnC

01 FnC

FnC 01

232 01

Sq 01

AnL 01

8

01 FnC

In 01

INDICATOR PARAMETER SETTINGS

To enter parameter settings, follow the procedure below:

1. Press ENTER and MODE at the same time for 2 seconds to enter the function settings

2. Navigate through the settings as shown in the table below by using the arrow keys and return

keys as labeled under each indicator button

3. Press the ENTER key to enter/edit the parameter setting

Press the

Function Item Parameter Description Default

Digital Filter 1

Digital Filter 2

Rate for display
rewrite

key to save and exit settings at any time

01 FnC Function Parameter Code

FnC 01

FnC 02

FnC 03

00
01
...
10

00
01
02
03

01
05
10
20
120

Greater

Less

Greater

Less

1 times/sec
5 times/sec
10 times/sec
20 times/sec
120 times/sec

03

02

10

02 232 Serial Port Interface

Function Item Parameter Description Default

Baud Rate

Transmit Mode

Data Format

Transmit Time

Address for Multi­computer

232 01

232 02

232 03

232 04

232 05

00
01
02
03
04
05

00
01
02
03
04

00
01
02

00
01
02
03

00
01~99

600bit/s
1200bit/s
2400bit/s
4800bit/s
9600bit/s
19200bit/s

close serial port
continuous
print mode
stable send
command mode

format 1
format 2
print format

open
1 sec
2 sec
5 sec

Only one
Address (bcd)

04

01

00

00

00

9

03 Sq Weight Comparison Procedures

Function Item Parameter Description Default

Batching Mode

Control Mode

Comparison Format

Start Delay

Stable Time

sq 01

sq 02

sq 03

sq 04

sq 05

00
01
02
03
04

01
02
03

01
02

00
01
...
10

00
01
...
10

normal batch
less-in weight
comparison

manual start
auto
for custom

net
gross

no delay
1 sec delay
…
10 sec delay

no wait
1 sec wait
…
10 sec wait

01

01

01

01

03

04 Analog Current Ouput

Function Item Parameter Description Default

Signal output

Data format

Maximum weight

Zero adjust

Linearity adjust

Output range limit

AnL 01

AnL 02

AnL 03
AnL 04
AnL 05
AnL 06

00
01
02

00
01

010000

4mA/0mA/0v

20mA/5v

00
01

4~20mA current
0~20mA current
0~5v voltage

display weight
gross weight

when max analog output weight

Press

Press

no limit
limit

or to adjust output

or to adjust output

00

00

010000

4

20

00

05 External Input Interface

Function Item Parameter Description Default

INPUT1

INPUT2

INPUT3

INPUT4

IN 01
IN 02
IN 03
IN 04

00
01
02
03
04
05
06

no function
zero
tare
gross
hold
total
print

01

02

05

06

10

CALIBRATION SETTINGS

To enter calibration settings, follow the procedure below:

1. In weighing mode, make sure calibration switch is set to “ON”

2. The display will show “01 CSP” meaning you entered the calibration parameter code

● Press to enter the next step level

● Follow the steps in the parameters to set up your calibration

3. Press to display “02 CAL” General calibration

● Follow the steps to calibrate your scale

4. Press to display “03 CUo” Sensitivity calibration

● Follow the steps to set lters and manage the sensitivity of your scale

5. When you are done with calibrating, make sure to turn the switch to “OFF”

6. The screen will display “End” , save the data and restart

Weighing Mode

Calibration switch set to “ON”

01 CSP

Calibration

Set-up

02 CAL

03 CUo

Sensitivity

Calibration

Calibration

Calibration switch set to “OFF”

Save Data & Restart

11

“01 CSP” Calibration Parameter Code

01 CSP Calibration Parameter Code

Function Item Parameter Description Default

Unit

Decimal point

Division

Max Capacity

Zero-Setting range

Initial zero-setting
range

Automatic
zero-setting range

Automatic
zero-setting time

Stable time

Stable range

Automatic zero

Preserved Menu

CSP 01

CSP 02

CSP 03

CSP 04
CSP 05

CSP 06

CSP 07

CSP 08

CSP 09

CSP 10

CSP 11

01
02
03

00
01
02
03
04

01
02
05

010000

00
01
02

00
01
02
05
10

00
05
10
20

00
01
02
03

00
01
02

01
02
05
10

00
02
05
10
20

kg
lb
t

none
1 decimal point
2 decimal point
3 decimal point
4 decimal point

division size

Max capacity

0
±1%
±2%

0
±1%
±2%
±5%
±10%

0

0.5d
1d
2d

0
1 sec
2 sec
3 sec

fast
medium
slow

1d
2d
5d
10d

no

-2d

-5d

-10d

-20d

01

00

02

1000

02

10

05

01

01

02

02

CSP 12

12

“02 CAL” Calibration

In weighing mode set calibration switch to “ON”

01 CSP

Calibration press

To enter calibration press

Zero calibration press

Skip zero calibration press

Display zero code

3 seconds

Weight calibration press

Skip weight calibration press

02 CAL

ZERO

288888

SPAN

Use

Once the weight is stable press

Sensitivity

3 seconds, calibration done

Set calibration switch to “OFF”

You are nished

Note: Zero calibration, can be no more than 5mv.

to set the weight

01000kg

120000

02 CAL

END

13

“03 CUo” Sensitivity Calibration

In weighing mode set calibration switch to “ON”

01 CSP

Sensitivity Calibration press

To enter calibration press

Zero calibration press

Skip zero calibration press

Auto gather zero code

Or press

to enter zero calibration

Sensitivity calibration press

Skip sensitivity calibration press

to set zero code

03 CUo

ZERO

288888

SPAN

Use

enter press

Sensitivity calibration done

Set calibration switch to “OFF”

You are nished

Sensitivity = 100000 x load cell full scale output x weigh-

ing meter capacity /(N x Load cell capacity)

to set the sensitivity

120000

02 CUo

END

14

CHECK WEIGHING CONFIGURATION

Weighing mode press to go enter parameters

Display Function

1. FinAL Final value

2. SP1 SP1 value

3. SP2 SP2 value

4. SP3 SP3 value

F. FALL Free fall value

6. oVer Over value

7. UndEr Under value

8. Z.bAnd Zero band

Warning: set FinAL > SP1 > SP2 > SP3 > F. Fall

set Sq01=1: net weigh

Signal Output Condition Relay Output

SP1 Net ≥ Final-SP1 J1

SP2 Net ≥ Final-SP2 J2

SP3 Net ≥ Final-SP3 J3

Free Fall Net ≥ Final-F.FALL J4

Set Sq01=3:

Signal Output Condition Relay Output

HI Net ≥ SP1 J1

OK SP1 ≥Net ≥ SP2 J2

LO Net < SP2 J3

15

CABLE CONNECTION MANUAL

Power

POW+ 24VDC+
POW- 24VDC­AC1 220VAC
AC2 220VAC

Load cell

EXC+
SEN+
EXC­SEN­SIG+
SIG-

NOTE: use 4-wire load cell need EXC+ and SEN+ short connect, EXC- and SEN- short
connect.

Serial Port

TXD RS232 transmission RXD RS232 receive GND RS232 GND A RS485 A B RS485 B

Analog Output

Vout 0~5v voltage, load more than 1kΩ
Iout 4~20mA current, load span 100~500Ω

GND GND

16

Relay Output

J1 J1 rst group relay output

J2 J2 second group relay output

J3 J3 third group relay output

J4 J4 fourth group relay output

Relay Output Connecction diagram

Note: Use common connection, put one of J1, J2, J3, J4 short connect.

Common connection diagram

17

Input

YX1 rst group input

YX2 second group input
YX3 third group input
YX4 fourth group input
YXCOM input common
0v out connect power GND

Input Diagram

Out connect power input diagram

Note: Using out elctric power needs more than 3V battery charge, Out electric power

less than 24V.

18

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

CONTACT US

Please e-mail [e-mail] for any sales related questions.

Please e-mail [e-mail] for any support related questions.

Don’t forget to visit our website at:

optimascale.com

19