dacell DN-711A User manual

Digital Weighing Indicator
Instruction Manual
Model : DN-711A
DN-711P
DACELL CO.,LTD
TEL : [phone]
FAX : [phone]
WEBSITE: http://www.dacell.com
EMAIL : [e-mail]

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CONTENTS
1. Before Installation ---------------------------------- 2 Page
2. Introduction ---------------------------------- 3 Page
3. Specification ---------------------------------- 4 Page
4. Installation ---------------------------------- 11 Page
5. Set-Up ---------------------------------- 13 Page
6. Interface ---------------------------------- 32 Page
7. Error and Treatment ---------------------------------- 44 Page

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1. BEFORE INSTALLATION
1-1. Caution / Warning Marks
This mark warns the possibility to arrive death or serious injury in
case of wrongly used.
This mark cautions the possibility to arrive serious human body
injury or product lose in case of wrongly used.
1-2. Other Marks
Warning for Electric Shock or Damage.
Please do not touch by hand
Protective Ground(Earth) terminal
Prohibition of Operation process
1-3. Copy Rights
1). All Right and Authority for this Manual is belonged to DACELL Co., Ltd.
2). Any kinds of copy or distribution without DACELL Co., Ltd’s permission will be prohibited.
1-4. Inquiries
If you have any kinds of inquiries for this model, please contact with your local agent or Head
Office.
Head Office : DACELL co.,Ltd.
Website : http://www.dacell.com
Email : [e-mail]
Warning
Caution

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2. INTRODUCTION
2-1. Introduction
Thank you for your choice, this “DN-711A & DN-711P” Industrial Digital Weighing Indictor.
This “DN-711 Series” model is simple application usage Digital Weighing Indicator, with
powerful communication performance.
With serial 1port communication and High Speed A/D conversion performance will lead you
to precise weighing process.
This “DN-711 Series” Weighing Indicator is simple application model, and it can be used for
“Platform Scale, Truck Scale, Crane Scale, Tank Scale Application.
Please review this instruction Manual and learn more about information about “DN-711 Series”.
Enjoy your process efficiency with “DN-711 Series” Weighing Indicator.
2-2. Cautions
1). Don’t drop on the ground or avoid serious external damage on item.
2). Don’t install under sunshine or heavy vibrated condition.
3). Don’t install place where high voltage or heavy electric noise condition.
4). When you connect with other devices, please turn off the power of item.
5). Avoid from water damage.
6). For the improvement of function or performance, we can change item specification without
prior notice or permission.
7). Item’s performance will be up-dated continuously base on previous version’s performance.
2-3. Features
1). All Modules and Option Cards are isolated to maximize accuracy and performance.
2). External input terminal inside.
3). By using “Photo-Coupler” on each module(Option, Analog board, In/Out), we improved
“Impedance problem”, “Isolation ability among inputs”, “Leading power problem”, and
“Noise covering function”.
4). Data back-up function, when the sudden power off
5). Polycarbonate film panel, strong against dust and water
6). RS-232C Serial Interface (Current Loop) is standard installed.
7). Max. Load Cell Connection is 6ea.
8). Options (Order in advance) : OP-1 : Rs-422 / OP-2 : Analogue Output(4~20mA or 0~10V)
2-4. Box Contents
1). Power Adaptor(1pcs) / Load cell Connector(1pcs) / Manual(1pcs)
Cautions
!

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3. SPECIFICATION
3-1. Analog Input & A/D Conversion
Input Sensitivity
0.45
㎶
/ Digit
Load Cell Excitation
DC 5V
Max. Signal Input Voltage
Max.32mV
Temperature Coefficient
[Zero] ±20PPM/℃
[Span] ±20PPM/℃
Input Noise
±0.6
㎶
P.P
Input Impedance
Over 10
㏁
A/D Conversion Method
Sigma-Delta
A/D Resolution(Internal)
260,000 Count(18bit)
A/D Sampling Rate
Max. 80times / Sec
Non-Linearity
0.01% FS
Display Resolution(External)
1/90,000
3-2. Digital Part
Display
Parts
Specification
Display
Main Display
DN-711A
7Segments, 6digits 1.0 inch Red color FND
Size : 25.4(H) × 14.4(W)mm
DN-711P
7Segments, 6digits 1.0 inch Red color FND
Size : 14.1(H) × 8.1(W)mm
Min. Division
×1, ×2, ×5, ×10, ×20, ×50
Max. display value +999,999
Under Zero value "-" (Minus display)
Status lamp
DN-711A
Steady, Zero,
Tare,
Gross, g,
kg, Ton, TX/RX
Green color Condition display Lamp (8pcs)
DN-711P
K e y Number, Function Key Power Key, Number Key, Function Key
(16pcs)

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3-3. General Specification
Power Supply
DC 12V / 2A
Operating Temperature Range
-10
℃
~ 40
℃
Operating Humidity Range
Under 85% Rh (non-condensing)
External Dimension
230mm(W)
ｘ
130mm(H)
ｘ
97mm(L)
Net Weight(kg)
About 1.0kg
Gross Weight(kg)
About 2.0kg
3-4. Option Card
Option No.1
Serial Interface : RS422 / RS485
Option No.2
Analogue Output (4~20mA or 0~10V)
Option No.3
※Serial Interface (RS-232C) and Current Loop is 1port Standard installed.
3-5. Front Panel (Display & Key pad) – DN 711A

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Front Panel (Display & Key pad) – DN 711P
3-5-1. Common Status Lamp (ANNUNCIATORS) : Green Color Lamp is “ON”.
Steady When the weight is Steady, Lamp is turn on.
Zero When the current weight is Zero, Lamp is turn on.
(Displayed weight is Zero, Lamp is turn on.)
Tare When Tare function is set, Lamp is turn on.
(Tare Reset Lamp is turn off.)
Gross When “Gross Weight display mode”, Lamp is turn on.
(Under “TARE” Setting mode, only)
g When “F50-01” setting, Lamp is turn on.
Kg When “F50-00” setting, Lamp is turn on.
ton When “F50-02” setting, Lamp is turn on.
TX/RX
When indicator transfers or receives data from other devices, Lamp is turn
on. (If the Lamp is off although there is some data transference, please
check communication settings).

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3-5-2. Common Key Pad Function
Make Weight value as Zero.
Under F08, you can set the Zero key operation range, as 2%, 5%, 10%,
20% or 100% of Max. Capacity.
※Under “Tare” key input, Zero key will not be activate within operation
range.
Make Weight value as Zero, including Tare Weight.
Under F09, you can set the Tare key operation range, as 10%, 20%, 50%,
or 100% of Max. Capacity.
※Whenever pressing “Tare” key, you can set the Tare continuously.
TARE RESET
1. Remove the Set TARE function.
- If you press this key, TARE set value will be removed and display gross
weight.
Auto Mode
Under Auto Mode, When the weight will be increased over than “Empty
Range” and steady, steady weight will be printed automatically.
※
Under “Auto
” mode, Steady weight will be printed and Save on
Sub-Total and Grand-Total Data.
Manual Mode
Under Manual Mode, When press “Print”key as number 9 key
, you can
print out.
You can set each weighing process as a certain P/N.
And you can call certain P/N with pressing this key.
P/N save : Select P/N and Enter key input.
P/N call : P/N + Number key + Enter
After Tare setting, it can be change to Gross Weight from Net Weight or to
Net Weight from Gross Weight.
Under Print installation, you can print out the “Sub-
total data” of current
P/N.
Printed Data : Accumulated count and weight of current P/N.
Under Print installation, you can print out the “Grand-total data” of current
P/N.
Printed Data : Accumulated count and weight of All P/N.
Manual Print
Whenever press this key, you can print out.

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Calibration mode
- Digit setting
Whenever pressing “0”key, digit will be change 1, 2, 5, 10, and 50.
1. Modify the set value during setting process.
2. Calibration mode
- Move back to previous step.
3. F-function setting mode
- Change F-function No.
F-function no.(number key) + Clear directly move
1. Save set value during setting process.
2. Calibration mode
- Save current setting and move to next step.
3. F-Function mode
- Save current F-function setting, and move to next F-function
The function Key will be different by this Function Setting.
The function Key will be different by this Function Setting.
The function Key will be different by this Function Setting.

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※Function Keys (Combined Key functions : or key + other keys)
For combined key function, you should press “CLEAR” or “ENTER” + other key within 2 sec.
Time set value check or Change
Date set value check or Change
Sub-total Date Delete
Grand-total Data Delete
Key Tare function activated.
(To Reset the key Tare, press key.)

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3-6. Rear Panel
①POWER -Power : DC 12V / 2A Adaptor
②LOAD CELL
CONNECTOR
(N-16)
-EXC + (+5V) PIN 1 (RED)
-EXC - (-5V) PIN 2 (WHITE)
-SIG+ PIN 3 (BLUE or Black)
-SIG-PIN 4 (GREEN)
-SHIELD PIN 5 (SHEILD)
③Communication
port
2
(RXD),
3
(TXD),
5
(GND) : RS-232C
(Standard)
6
(CL1),
7
(CL2) : CURRENT LOOP
(Standard)
8
(TXD),
9
(GND) : Print port
(Option)
④OPTION
- OPTION (D-Sub 9 pin)
- Serial I/F RS-422/485, Analogue Output(4~20mA or 0~10V)
(
1
(Analog+),
5
(Analog-) Analog Output
6
(RX+),
7
(RX-),
8
(TX+),
9
(TX-) RS-422 Communication
6
(TRX+),
7
(TRX-) RS-485 Communication

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4. INSTALLATION
4-1. External Dimension & Cutting Size
(External Dimension) (unit : mm)
Cutting Size

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4-2. Formula to plan the precise weighing system
This “DN-711 Series” weighing controller’s Max. input sensitivity is 0.45
㎶
/ Digit.
And for precise weighing system, the following formula must be satisfied.
Caution : “Input sensitivity” means Min. output voltage variation of weighing part to change
1digit. So, please do not make large input voltage to make reliable weighing system.
Single Load cell use
≤EⅹBⅹD A : Load cell capacity(kg)
B : Load cell Voltage(mV)
D : Digit
E : affirmation Voltage of Load cell
N : Number of Load cell
0.45㎶
A
Plural Load cells use
≤EⅹBⅹD
0.45㎶
AⅹN
Example1.)
Number of Load cell : 1pcs
Load cell capacity : 500kg
Load cell Voltage : 2mV/V
Digit : 0.05kg
Affirmation Voltage of Load cell : 5.0V
Max. Capacity of Weighing System : 300kg
Then, estimation result for this weighing system with formula,
5000ⅹ2ⅹ0.05 = 1 ≥ 0.45㎶The calculated value is larger than 0.45
㎶
,
so this system has no problem.
500
Example2.)
Number of Load cell : 4pcs
Load cell capacity : 500kg
Load cell Voltage : 2mV/V
Digit : 0.10kg
Affirmation Voltage of Load cell : 5.0V
Max. Capacity of Weighing System : 1,000kg
Then, estimation result for this weighing system with formula,
5000ⅹ2ⅹ0.10 = 0.5 ≥ 0.45㎶
The calculated value is larger than
0.45㎶, so this system has no problem.
500ⅹ4
Cautions
!

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Chapter 5. Set Up
5-1. Calibration
Adjust weight balance between “Real weight” on the load cell(Weight Part) and “Displayed weight of
Indicator”. When you replace LOAD CELL or Indicator, you have to do Calibration process once again
5-2. Test Weight Calibration (span Calibration) – Mode 1.
Prepare at least 10% of Max. capacity of your weighing scale.
Step 1. Enter Calibration Mode
Press key during 5 sec display.
Or pressing + pressing display
Press key display
Press key to start “Calibration Mode”.
Remarks : Go to next step with save key / Back to previous step key
Step 2. Multi-Calibration setting with 4 Section ( display)
P _1 : Section number of Multi-calibration setting
Function : Calibration Section setting for Multi calibration
Set value
(1~4)
Display
Explanation
P 1 You can divide a weight setting from 1 to 4 Section
with max weight.
2-1. If a real curve of load cell is straight line, the calibration section would be 1.
2-2. The multi calibration function is for compensate to load cell’s output by so using a multi-point at
some section when the real curve of load cell is not straight line as like under picture.
SET-CAL
TEST
SET-CAL
P_1

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2-3. Under display, if press a keypad No. 2, it will be change the section 2.
And, if press a keypad No. 3 or 4 or 1, it will be change the section 3 or 4 or 1.
Then press key, and move to next step.”
2-4. It would be repeat Step 6~7 when progressing over than 2times to the multi calibration.
So, when progress over than 2times of section calibration, for example if you want some calibration to
set 40kg and prepared Test weight as 1kg and 3kg at Step 6, you should input & up-load a 1kg at first
time then you should input & up-load a 3kg when return to Step 6 again.
Step 3. Digit(Division)setting ( display)
Press key and stop the optimal Digit value.
(Whenever pressing key , digit value will be changed, like 01-02-05-10-20-50)
Press key and save change and move to next step.
Step 4. Max. Capacity Setting (

display)
Input Max. Capacity of Scale with No. keys.
P_1
d _1
CAPA
XXXXXX

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Input Capacity and press key, and move to next step.
※
Caution
(Max. capacity value / division value) cannot be over 90,000(as Indicator resolution is 1/90,000).
Step 5. Zero Balance setting ( display)
Make empty the scale part, and press key.
Indicator check the current Zero balance and save the value and move next step.
Step 6. Span value calculation (
 
)
Input prepared Test weight value with No. keys.
And press key.
Then, display will show and then, load prepared test weight unit on the scale.
After a few seconds(to remove the vibration effect), press key.
Then, indicator will calculate Span value and move the next step.
※
Caution
For the precise Span calibration, please prepare Test weight unit, at least 10% of Max. capacity
of Scale.
Step 7. Check Span Value and Finish the Calibration( )
Check the Calculated Span value.
And after 3sec, will displayed automatically and move to weighing Mode.
CAL _0_
SPAN
XXXXX
C_UP_
C_UP_
XXXXXX
C-END
C-END

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5-3. Simulation Calibration Mode (Without Test Weight) – Mode 2.
- This calibration Method will be useful to make calibration more than 10ton capacity setting.
- Guaranteed resolution will be 1/5,000 and if you need higher resolution, please make
calibration with Test weight.
Step 1. Enter to the “SET-CAL” mode
Press key during 5 sec display.
Or pressing + pressing display
Press key display.
Press key to start “Simulation Calibration Mode”.
Remarks : Go to next step with save key / Back to previous step key Step 2.
Step 2. Digit (Division)setting ( display)
Press key and stop the optimal Digit value.
(Whenever pressing key, digit value will be changed, like 01-02-05-10-20-50)
Press key and save change and move to next step.
SET-CAL
TEST
SET-CAL
CAL_ _2
d _ 1

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Step 3. Max. Capacity of Load cell (

display)
Input Max. Capacity of Scale with No. keys.
- Under this step, input Total sum of each load cell’s Max. Capacity. (Not weighing Scale)
- The Max. Capacity of load cell is stated on “Test report” or “Label”.
- If you installed 4 load cells, and each load cell’s Max. Capacity is 500kg, then you have to input
2,000kg, as a Max. Capacity.
Input Capacity and press key, and move to next step.
Step 4. Measure/Adjustment optimal Zero balance of Scale ( display)
Make empty the scale part, and press key.
Indicator check the current Zero balance and save the value and move next step.
CAPA
XXXXXX
CAL _0_

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Step 5. Input Max. Output Rate (mV/V) value of load cell
Input Max. Output Rate(mV/V) value of load cell with No. keys.
- Under this step, input Max. Output rate(mV) of load cell.
- If you installed a few pieces of load cells, the connection will be parallel, so the rated output of
a few load cells are as same as single load cell’s rated output.
- The Output rate is stated on “Test report” or “Label”
And press key.
Step 6. End Calibration and Auto Reset
- Calculated Span value will be displayed and automatically reset and move the normal
weight indicating mode.

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5-4. Function Setting – Mode 1.
To make more accuracy performance of Digital Weighing Indicator, through this Function setting.
Step 1. Enter to Function setting mode.
Pressing + pressing display
Press key display
Press key to start “F-function Mode”.
TEST
SET-CAL