Flintec DAS 72.1 User Manual

Process Indicator Type DAS 72.1 Mark III

MANUAL

Firmware Version 72.181.v.4.28 or higher

Hardware Version 72.101.5.v.3.0x

Document No G128 Rev6 GB

www.flintec.com

Manual DAS 72.1 Page 1

A GENERAL

A.1 INTRODUCTION AND SPECIFICATION

The model DAS 72.1 Mark III is a high precision, high speed digital amplifier for weighing and force measurements with strain gauge (SG) sensors. The device can be controlled either by the front keys or via RS 485 port. 3 Logic inputsand outputs makecomplex control functionseasy.The 3 logic outputs canbe controlled external too.

With the available as standard analogue output 4…20 mA the DAS 72.1 fulfills industrial requirements. The device features full multi-drop communications capability and can be programmed via a straightforward ASCII command set. The LDU xx.x series and the amplifier DAS 72.1 with on-board digital display, use the same command set. You can connect up to 32 SG amplifiers of either the LDU XX.X series or DAS 72.1 type onto a single RS485 bus.

The DAS 72.1 with its high precision 18-bit A to D converter and internal sample rate of up to 2400 measure ments / second, is particularly suitable for high dynamic measurements and control purposes.

DAS 72.1 Mark II / III Specifications

Linearity < 0.002 % Excitation 5 V DC, load cells 80-2000 Ohm, 6 wire technique Analogue input range ±3.2 mV/V (bipolar, for weighing applications and force measurements) Minimum input per vsi 0.05 μV/d Resolution Internal ±260000 counts, ±18-Bit-A/D convertor; display max. ±99999 counts Conversion rate Internal 2400 measurements per second; external up to 600 measurements per second Digital filter FIR Filter 2.5 ... 19.7 Hz or IIR Filter 0.25 ... 18 Hz; programmable in 8 steps each Calibration Software calibration and set up Computer interface RS485 or RS422, full duplex, 9600 ... 115200 Baud; bus capability up to 32 devices

(RS485) Weighing functions zero, gross, tare, net, filter etc. Analogue output 0/4...20 mA, 14-Bit resolution Display 10.2 mm LED, green, 5 digits, 3 status LED for nett/motion/sign,

6 status LED for logic inputs and outputs Logic inputs 3 opto-isolated inputs, 10 ... 30 V DC, max. 3.5 mA Logic outputs 3 opto-isolated outputs, < 45 V DC / AC, 1 A Temperature effects on zero 5 ppm/°K typ.; max. <10 ppm/°K

on span 4 ppm/°K typ.; max. <8 ppm/°K Temperature range –10 °C to +50 °C (operating); –20 °C to +60 °C (storage) Enclosure tinned steel enclosure, protection IP 40; for 35 mm DIN-rail mounting.

Special housing IP 65 on request. Dimensions 135 x 66 x 19 mm, weight ca. 180 g Power supply 11 ... 25 V DC ±10 %, < 3 W, galvanically isolated EMC CE 73/23/EEC; 93/98/EEC and 89/336/EEC

All dimensions in mm. Dimensions and specifications are subject to change without notice.

Page 2 Manual DAS 72.1

A.2 KEY FUNCTIONS

Tare Key

Puts unit into ‘Net’ mode.When inside ‘Set-up’ Menu this key moves the menu back one step. Also moves‘Digit Selected’ to the right inside sub menus.

Zero Key

Sets new zero (if enabled). Reverts to calibrated zero if the button is held down for more than 3 seconds. Switches unit back to ‘Gross’ mode if a tare has been set. Acts as the‘Enter’ key in the ‘Set-up’ Mode.

Down key

Recessed Enable Switch (Enables changes to be made to important parameters. Must be pressed before attempting to change parameters 1.1 to 1.3, 2.1 to 2.3 and 3.1 to 3.3)

No motion LED

Net mode LED

Logic input 1 2 3

Depress

Change

Net

Logic output

1.Zero

1.0/allow>0<

2.Calibrate

3.Set mV/V

Load cell 5Vdc 80mA Exc Sen Sig Sig Sen Exc Rx Rx Tx Tx

+++ +

2 3 4 5 6 7 8 9 10 111213

2.Span

1.Set cal. ´n´

2.Calibrate

3.Set mV/V

4.Disp.mV/V

--- -

123

3.Display

1.o/u limits´n´

2.Step * ´n´

3.Dec.point

4.Logic stats

0-20mA

Io Gnd

4.Filter

1.f Hz

cut

2.Algorithm

3.Update rate

Motion´n´

RS422/485CL out

to enter the set up mode

7.Outp. 1/2/3

1.SPoint ´n´

2.Hyst. ´n´

3.Base

4.Test

Isolated

Mark III

Isolated

Power 11 -25Vdc

SET UP

8.Datacom.

1.Baud rate

2.422/485

3.Address

4.Auto trnsm.

Digital Amplifier + Setpoint DAS 72.1

Inp.1 Inp.2

Isolated

6.Input 1/2/3

1.Assign key

4.Test

Logic Inputs

12 3com

5.CLout

1.4mA=´n´

2.20mA=´n´

3.Base

4.TestImA

Logic Outputs

12 3com

14 27

Press either key for

more than 3 seconds

Up key

261516 17 2324 25181920 2122

SHIELD

+ EXCITATION

+ SENSE

+SIGNAL

- SENSE

- SIGNAL

- EXCITATION

Receive -

Receive +

Ground

Transmit -

Transmit +

Logic Input 1 (+)

Logic Input 2 (+)

Logic Input 3 (+)

Commmon

“Set up”

menu structure

RS422/485

COM port

Logic

outputs

0 4-20mA

Load cell

connections

Manual DAS 72.1 Page 3

analogue

output

Logic

inputs

Input 1

Inp.1

(Functions as

Zero button, Tare off, Set zero, see paragraph B.3.6)

Power supply 12-25 V DC

Inp.2

Input 2 (Functions as

Tare button, Display net mode, see paragraph B.3.6)

B KEYBOARD SET UP

A GENERAL 2 A.1 INTRODUCTION AND SPECIFICATION 2 A.2 KEYFUNCTIONS 3 B KEYBOARDSET UP 4 B.1 SHORTMANUAL OF KEYBOARD SETUP 5 B.2 SETUPTABLE 6 B.3 SETUP FLOWCHARTS 7 B.3.1 Zeroset up,Menu 1.1 - 1.4 7 B.3.2 Spanset up,Menu 2.1 -2.4 8 B.3.3 Displayset up,Menu 3.1 - 3.4 9 B.3.4 Filter / no motion setup, Menu 4.1- 4.4 10 B.3.5 Analogueoutput set up, Menu 5.1- 5.4 11 B.3.6 Logicinput setup, Menu 6.1.3- 6.3.4 12 B.3.7 Logicoutput setup, Menu 7.1- 7.3 14 B.3.8 Datacommunication set up,menu 8.1 - 8.4 15 B.3.9 Errorcodes 16 B.4 EXAMPLES 17 B.4.1 Example1, calibration procedureusing weights 17 B.4.2 Example2, calibration procedureusing loadcell mV/V sensitivity and B.4.3 Example3, calibration procedureusing loadcell mV/V sensitivity 21 D CE KONFORMITÄTSERKLÄRUNG 57

zero offset 19

Page 4 Manual DAS 72.1

B.1 SHORT MANUAL OF KEYBOARD SETUP

9600...115,2 k Baud

1. Setup Baudrate:

Setup setpoints

for outputs 1/2/3

1.1

• (00) not used

1. External Key control :

output of 4 mA

1. Setup value for an

• (01) Zero

Example:

2. Setup Mode for Com.

1.2 Setup switch logic

• (02) Tare

0.0 (g) @ 4 mA

ports

for:

Valid addresses

0...255

Address "0" device is

always active on bus

Address enable via

• RS-422 full duplex

• RS-485 Network

•

"open"

3. Setup Port Address

•

Example:

2. Setup Hysteresis of

• (06) Get average

• (07) Display Peak

1000 (g) @ 20 mA

setpoints

• (08) Delete Peak

• (09) Display Hold

output:

3. Base of analogue

• (0) Gross

3. Base of Outputs:

• (10) Peak to Peak

• Gross value

• (1) Net

• (11) Display Valley

• Nett value

• (12) Key lock

• Average valuet

• on

• off

• (03) Move up

• (04) Move down

• (05) External trigger

output of 20 mA

2. Setup value for an

• (2) Peak

• (3) Average

• (13) Store Weight

• Hold valuet

4. Auto Transmit of

• (14) Tare and delete

• Peak to Peak valuet

data:

• (4) Hold

• Valley valuet

• Gross

• (5) Peak to Peak

• Display value

2. not used

• Net

• (6) Valley

• Swiched off

• All (Data string)

• (7) Error 4 or 5

3. not used

• Sap (A/D value)

• (8) Swiched of

• Aver (Average

4. Test of Logic inputs

output signal

4. Simulate an analogue

value)

• Pea (Peak value

• Hold (Hold value)

The display shows

the signal status of

logic outputs

4. Test of Logic outputs

The display shows

the signal status of

logic inputs

Setup 12.345 for

getting an output

current of 12,345 mA

value)

• Vall (Valley value)

• Pp (Peak to Peak

• Off (switched off)

Standard display is

switched off!

Standard display is

switched off!

Setup menu : To enter, press one of the arrow keys for 3 seconds. To change calibration data, also press recessed switch (to the left of the display) once.

1. ZERO 2. Span 3. Display 4. Filter 5. CL out 6. Input 1/2/3 7. Output 1/2/3 8. Data Com

1. 0 / allow >O< 1. Set cal.”n” 1. o/u limits ‘n’ 1. f-cut Hz 1. 4 mA=’n’ 1. Assign key 1. SPoint ‘n’ 1. Baud rate

2. Calibrate 2. Calibrate 2. Step*’n’ 2. Algorithm 2. 20 mA=’n’ 2. 2. Hyst +/- ‘n’ 2. 422/485

3. Set mV/V 3. Set mV/V 3. Dec.point 3. Update rates 3. Base 3. 3. Base 3. Address

4. Tare Memory 4. Disp. mV/V 4. Logic stats 4. Motion ‘n’ 4. Test I mA 4. Test 4. Test 4. Auto trnsm.

adjustable from

1=18Hzto

1. Cut off frequency

at which the display

shows an overload (o)

1. Measured value

actual measured

signal after 2.2 or

1. Calibration value for

Zero lock / unlock

1. Zero Tracking or Set

8 = 0.25 Hz

or an underload (u)

with internal mV/V

2. Calibrate Zero with

Typical setup:

signal after 2.3

should be displayed

actual or external

"4"=3 Hz

2. Display step size as

simulated input

signal changes

• FIR-Filter for quick

dampening

• IIR-Filter for high

2. Select Filter Type:

1, 2, 5, 10, 20 etc

point of the display

Example:

000.00 @ 100.00(g)

3. Position decimal

Example: 10 000 (g)

cell(s) connected or

will be simulated by a

simulator

This signal refers to

2. Input signal of load

signal

display "Zero” with

manual setup of

mV/V signal

3. Calibrate Zero to

This setup has

additional influence

•

on filters

3. Update rate

status

• No Status I/O

(approx 1,5 s)

• Short display of

for in motion band

(Tare, Zero and

Zero Tracking are

only allowed at

4.1 No Motion Range

4.2 Stabilisation time

I/O

• Permenant status

"No Motion")

4. Display I/O:

calibrate value of

setup 2.1

4.1 Tare "ON":= Tare

value stred

3. Input signal in mV/

non-volatile

Tare "OFF": Tare

setupwiththefront

panel keys

This signal refers to

calibrate value of

setup 2.1

1,6500 mV/V @ 1000

(g)

input signal in mV/V

For test purposes

4. Display of actual

value deleted at

power off

"ON" Load cells

connected with

Zener barriers

"OFF" Load cells

connected without

Zener barriers

4.2 EX-Modus

Manual DAS 72.1 Page 5

B.2 SETUP TABLE

Description

Function Zero key (on/off))

Zero Calibration / Weight Zero Calibration / mV/V

Span / Weight or mV/V

Span / Weight Span / mV/V

Displays Actual mV/V Signal

Maximum Display Value Maximum Display Value Display Step Size Decimal Point Position Display Status I/O

Cut Off Filter Frequency Filter Type

Update Rate per second (filtered) No Motion Range

Set Analogue Output @ 4 mA Set Analogue Output @ 20 mA Base of Analogue Output Simulate Analogue Output Signal

Input 1 for External Key Control Input 2 for External Key Control Input 3 for External Key Control Read Iinput Status Base of Digital Inputs Test Logic Inputs

Output Setpoint 1 Output Setpoint 2 Output Setpoint 3 Hysteresis & Logic Setpoint 1 Hysteresis & Logic Setpoint 2 Hysteresis & Logic Setpoint 2 Base Setpoint 1 Base Setpoint 2 Base Setpoint 3 Function Test Output 1 Function Test Output 2 Function Test Output 3

Baudrate RS-422/485 Port Port Mode (422 or 485) Device Address Com Port Auto Transmit Data

LED Display Pre Setup Example: 3000 kg scale

with 0.5 kg step

Menu Point Value Value Result

<1.1>

<1.2> <1.3> <2.1>

<2.2> <2.3>

<2.4> < 3.1.o > < 3.1.u >

<3.2>

<3.3>

<3.4>

<4.1>

<4.2>

<4.3>

<4.4>

<5.1>

<5.2>

<5.3>

<5.4> < 6.1.1 > < 6.2.1 > < 6.3.1 >

<6.2>

<6.3>

<6.4> < 7.1.1 > < 7.2.1 > < 7.3.1 > < 7.1.2 > < 7.2.2 > < 7.3.2 > < 7.1.3 > < 7.2.3 > < 7.3.3 > < 7.1.4 > < 7.2.4 > < 7.3.4 >

<8.1>

<8.2>

<8.3>

<8.4>

0-oFF

0.000

20000

0.000

2.000

99999

-9999 1 0 1

33.3 FIR

1 00000 20000

gross

-99999 00000

oFF

9600

422

oFF

0-oFF

0.000

0.400

a)3000.0 or

b)750.0

0.9

2.000

3100.0

-200.0 5

0.0 1

3.0

FIR

3 1

0.0

3000.0 gross

0000.0

1000.0

3000.0

0000.0

net net net

9600

422

nEt

Set zero not

possible

mV/V

Cal. with mV/V

Cal. with 750 kg

mV/V mV/V

-kg kg

0,5 kg

0000.0

Status for 1 s

for quick signal

changes

measurements/s

kg kg

gross

-kg kg kg kg kg kg

net net net

Baud

422-Port

Device No.

auto transmit

net weight

Page 6 Manual DAS 72.1

B.3 SET UP FLOWCHARTS

B.3.1 Zero set up, Menu 1.1 - 1.4

SET UP

Press the UP or DOWN key for more than 3 seconds to enter the Set-up Menu

Inp.1

Inp.2

Inp.1

Automatic Zero Tracking

Settings: 0 ... 255 d

Function is swiched off at setting 00 000. Zero Setting with zero key or by external signal is not possible (Menu 6).

Function is swiched on at setting 00 001 or higher, (max 00 255). Zero Setting with zero key or by external signal (Menu 6). Setting 00 001 sets a zero range of +/-2%ofUpper Display Limit (Menu 3.1), setting 00 002 up to 00 255 sets a range of2dupto255d(independant of decimal point setting).

Inp.2

Inp.1

CALIBRATE OR ADJUST THE ZERO POINT

(CONVENTIONAL WEIGHING SYSTEM)

Display shows the actual input signal in mV/V. Press the Enter key to store the zero.

Note: Recessed Enable Switch (Enables changes to be made to important parameters. Must be pressed before attempting to change parameters

1.1 to 1.3, 2.1 to 2.3 and 3.1 to 3.3)

Inp.1

Remark:

Inp.2

Inp.1

CALIBRATE THE ZERO POINT FROM THE LOAD CELL mV/V READING

scale should be unloaded.

Inp.1

Use the UP/DOWN & MOVE RIGHT keys to set the mV/V reading at which the unit should read zero.

Inp.2

Inp.1

Inp.2

Inp.1

Store Tare value, setting ON or OFF

Inp.1

OFF: Tare value deleted at power off ON: Tare value stored non-volatile (max. 1 000 000 times)

Inp.1

Inp.2

Inp.1

EX-Modus, setting ON or OFF

OFF:Load cell connection without Zener barrieres ON: Load cell connection with Zener barrieres,

extended error band for ERR 5

Inp.1

Manual DAS 72.1 Page 7

B.3.2 Span set up, Menu 2.1 - 2.4

Inp.1

Inp.2

Inp.1

SET THE SPAN CALIBRATION VALUE

Twopossibilities areavailable: A. Setthe displayvalue equivalent to thecalibration weight,continue withstep 2.2

B. Use the mV/Vsignal derivedfrom the load cell(s)test data,continue withstep 2.3.

Inp.1

Inp.2

Inp.1

CALIBRATE THE SPAN (CONVENTIONAL WEIGHING SYSTEM)

Display shows the actual input signal in mV/V. Apply test weights equivalent to the calibration value set in section 2.1. Press the Enter key to store the new span value.

Inp.1

Inp.2

Inp.1

CALIBRATE THE SPAN FROM THE LOAD CELL mV/V READING

Use the UP/DOWN & MOVE RIGHT keys to set the mV/V reading at which the unit should read the value set in section 2.1.

Inp.1

Inp.2

Inp.1

DISPLAY THE INPUT SIGNAL IN mV/V

This function allows you to view the input signal in mV/V.

Inp.1

Page 8 Manual DAS 72.1

B.3.3 Display set up, Menu 3.1 - 3.4

Inp.1

Inp.2

Inp.1

Inp.2

Inp.1

SET THE DISPLAY OVER RANGE LIMIT

(MAXIMUM VALUE +99 999)

Use the and keys to set the maximum display value

Inp.2

above which the display shows over range (all dashes in the top of the display).

Inp.1

SET THE DISPLAY UNDER RANGE LIMIT

(MINIMUM VALUE -99 999)

Use the and keys to set the minimum display value

Inp.2

below which the display shows under range (all dashes in the bottom of the display).

Inp.1

Inp.2

Inp.1

SET THE DISPLAY DIVISION OR STEP SIZE

(1, 2, 5, 10, 20, 50, 100, 200, 500)

Use the and keys to set the required display division or step size.

Inp.1

SET THE DECIMAL POINT POSITION ON THE DISPLAY (0, 0.0, 0.00, 0.000, 0.0000)

Use the and keys to set the required decimal point position on the

Inp.2

Inp.1

display.

Inp.1

Inp.2

Inp.1

3.4.0

LOGIC I-O STATUS

Select setting 0, 1 or 2 with and .

Inp.2

Setting 0 = Continious indication of Weight, no input/output status. Setting 1 = Indication of Weight, short indication input/output status (ca. 1,5 sec)

3.4.1

Setting 2 = Continious indication of input/output status.

3.4.2

Inp.1

Manual DAS 72.1 Page 9

B.3.4 Filter / no motion set up, Menu 4.1 - 4.4

Inp.1

Inp.2

Inp.1

4.1.0 : : :

4.1.8

Inp.1

4.3.0 : : :

4.3.7

Inp.1

Set the low pass filter cut off frequency

Set Range: 0 - 8 with Filter setting 18 Hz (4.1.1) to 0.25 Hz (4.1.8) with Filter type IIR. Filter setting 19.7 Hz (4.1.1) to 2.5 Hz (4.1.8) with Filter type FIR.

Attention

See Paragraph C.4.5 for more information.

Set the type of low pass filter required

: FIR or IIR

Setting with

Type IIR should be used where heavy damping is required. Type FIR should be used where high speed is required.

Defines the number of filtered readings averaged

Set Range: 0-7mit This Parameter defines the number of Readings from the IIR or FIR filter that will be averaged. Selection between “0” (1 Reading) and “7” (128 Readings).

Attention:

: Setting

“0” (4.1.0) deactivates the Filter.

See Paragraph C.4.5 for more information.

Inp.1

Inp.2

Inp.1

Set the No Motion Range

Set Range: 0 - 30 000 steps and

Inp.2

Fluctuations in weight values inside this range will be considered as ‘stable’.

Attention:

See also 4.4.2 for the Stabilisation Time If the condition of the No Motion Range is fullfilled within the Stabilistion Time the “No Motion” status bit will be set to allow zero setting, taring as well as calibrating zero and span.

Inp.1

Set the Stabilisation Time

Set Range: 0 - 30 000 mS with and

Inp.2

Sets the Stabilisation Time in milliseconds within which the weight value displayed has to remain within the No Motion Range, for the weigh to be considered ‘stable’.

Inp.1

Page 10 Manual DAS 72.1

B.3.5 Analogue output set up, Menu 5.1 - 5.4

Inp.1

Inp.2

Inp.1

Set the weight value at which 4 mA is send

Setting with and

Inp.2

Set the weight value at which 4 mA is send.

Examples:

Weighing range 3 000 kg and 3 000 d with 0/4...20 mA.

Analogue output 4...20 mA: for 0 kg=4mAmake setting 00 000. Analogue output 0...20 mA: for 600 kg=4mAmake setting 00 600.

Inp.1

Inp.2

Inp.1

Set the weight value at which 20 mA is send

Setting with and

Inp.2

Set the weight value at which 20 mA is send.

Examples:

Weighing range 3 000 kg and 3 000 d with 0/4...20 mA.

Analogue output 4...20 mA: for 3 000 kg = 20 mA make seting 03 000. Analogue output 0...20 mA: for 3 000 kg = 20 mA make seting 03 000.

Inp.2

Inp.1

Set the analogue output base

Setting with and for the following values:

GROS Gross NET Net PEA Peak AVER Average HOLD Hold PP Peak÷Peak VALL Valley DISP Display OFF OFF

= Analogue output follows value = Analogue output follows value = Analogue output follows value (maximum) = Analogue output follows value = Analogue output follows value = Analogue output follows value = Analogue output follows value (minimum) = Analogue output follows value = Analogue output is switched

Inp.2

Inp.1

Inp.2

Inp.1

Test the current output

Set Range 0...20 mA with . And

Inp.2

Set a current value in mA, which will be sent down the analogue output, independent of the load applied to the weighing system.

Inp.1

Manual DAS 72.1 Page 11

B.3.6 Logic input set up, Menu 6.1.3 - 6.3.4

The second digit coresponds with the input number

Set the function for Logic Input “1”

Possible settings: 00, 01 ,02 ,03 ,04 ,05 ,06 ,07, 08, 09, 10, 11, 12, 13, 14.

Fortsetzung nächste Seite

Input “1” no function

Input “1” acts as Zero button

Input “1” acts as Tare button

Input “1” acts as Up arrow button

Input “1” acts as Down arrow button

Input “1” starts the Trigger function

Input “1” displays the Average value

Input “1” displays the Peak value (maximum)

Input “1” deletes the Peak value

Input “1” displays the Hold value

Input “1” displays the Peak to Peak value

Input “1” displays the Valley value (minimum)

Input “1” disables the keyboard

Input “1” stores the actual weight (Hold value)

Input “1” tares the display and deletes all other values like 6.1.1.08

Page 12 Manual DAS 72.1

Logic input set up, Menu 6.1.3 - 6.3.4 (continued)

No function

Check Logic Input “1”

(6.1.1. must be set to “0” => 6.1.1.0)

“In1 0.” Input is ”low”

“In1 1.” Input is ”high”

As per section 6.1 but for Logic Input “2”

As per section 6.1 but for Logic Input “3”

Manual DAS 72.1 Page 13

B.3.7 Logic output set up, Menu 7.1 - 7.3

The second digit coresponds with the output number

Set the function for Logic Output “1”

Set weight value at which Logic

Output “1” switches

Permitted values +/- 99 999

Set whether Logic Output “1”

switches ON or OFF

Use the UP/DOWN keys to set whether logic output 1 switches ON or OFF at the

Set the hysteresis value on the setpoint for

Logic Output “1”

Permitted values +/- 99 999.

Set base for Logic Output “1”

As per section 7.1 but for Logic Output “2”

GROS Gross NET Net PEA Peak AVER Average HOLD Hold PP Peak to Peak VALL Valley ERR Error OFF OFF

Check Logic Output “1”

Use the UP/DOWN keys to switch.

= value = value = value (maximum) = value = value = value = value (minimum) = 4 or 5 = Sets output

The output is “off”.

The output is “on”.

out 1

com

As per section 7.1 but for Logic Output “3”

Page 14 Manual DAS 72.1

B.3.8 Data communication set up, menu 8.1 - 8.4

Inp.1

Inp.2

Inp.1

Set the Baud Rate for COMPORT (RS-422/485)

Setting with and

Inp.2

9 600 Baud 19 200 Baud 38 400 Baud 57 600 Baud

115 200 Baud

Inp.1

Inp.2

Inp.1

Select either RS-422 or RS-485

Setting with and

Inp.2

422 = RS-422-Interface (use for single DAS application) 485 = RS-485-Interface (use for multiple DAS application in BUS)

Inp.1

Inp.2

Inp.1

Set the Device Address Comport (RS-422/485)

Setting with and

Inp.2

Set the device address for multi-drop to 001 ... 255. Set to 000 for single point to point applications.

Inp.1

Inp.2

Inp.1

Select the Autotransmit Mode Setting with

GROS NET ALL SAP AVER PEA HOLD VALL PP OFF

= Gross value = Net value = Data string with Gross, Net and Status = A/D value = Average value = Peak value (maximum) = Hold value = Valley value (minimum) = Peak to Peak value = Autotransmit OFF

Inp.1

Manual DAS 72.1 Page 15

B.3.9 Error codes

The zero key is not enabled (See menu 1.1)

Set final zero out of range. (You are trying to set a zero which is greater than ±2% of the Upper Display Limit)

Excessive sensitivity requested. (The input signal is being divided into too many divisions i.e the size of each division is < 0.5 V)m

The input signal is in excess of ± 2.6 mV/V

Faulty load cell connection (Open circuit / Short Circuit / Wire disconnected)

You are trying to enter a value which is not valid (Outside the acceptable parameter range)

Display overload (Display value exceeds the upper limit set in Menu 3.1.o)

Display underload (Display value is more negative than the lower limit set in Menu 3.1.U)

The Zero or Tare motion limit has been exceeded. Set Zero or Tare function disallowed. Review Zero and Tare motion limits set in menu 4.4

Remark

If you need to return the DAS72.1 Mark III to the factory settings simply press and hold the recessed enable switch whilst powering up the unit. All parameters will then revert to the factory settings

Page 16 Manual DAS 72.1

B.4 EXAMPLES

B.4.1 Example 1, calibration procedure using weights

3 Leg tank or silo fitted with 3 off 1000 kg @ 2 mV/V load cells.

Dead load 600 kg. Live range 2000 kg in 0.5 kg steps.

It is assumed that the load cell system is connected to the DAS72.1 and the power is on. The maximum and minimum display values, display increment size and decimal point position should be defined prior to carrying out the calibration (See Menu 3). For this example the display maximum is defined as 2100.0, the display minimum is

-200.0, the display step size is 0.5 kg.

Remember that all parameters under sections 1.1 - 1.3, 2.1 - 2.3 and 3.1 - 3.3 can only be accessed or changed after the Recessed Enable Switch has been pressed.

Go to Menu 1.2 and using the UP/DOWN and RIGHT keys set the display to read 0000.0. Make sure that the

weighing system is empty or at the point where you want the display to read zero. Press the 0 [Enter] key. This defines the actual zero calibration point.

Go to Menu 2.1 and using the UP/DOWN and RIGHT keys set the display to read the value of the calibration weight(s) applied. For this example if the calibration load applied is 750 kg set the display to read 750.0. Press the 0 [Enter] key. This defines the calibration weight.

Go to Menu 2.2.Apply the calibration weight(s) to the weighing system. Press the 0 [Enter] key. The display will show the actual input signal in mV/V. Press the 0 [Enter] key. This defines the actual span calibration point.The displaywill show 2.2. Press the rightarrow keytwice and the DAS willbe back in weighing mode.

Calibration is now completed.

Manual DAS 72.1 Page 17

Flowchart Example 1

Enter the

Set-up menu

Set the decimal

point position

Set the

display

step size

Set the Display

Upper Limit

(Overload)

Set the Display

Lower Limit

SET UP

1. Press the UP or DOWN key for more than 3 seconds to enter the Set-up Menu

2. Press the recessed enable switch

SET THE DECIMAL POINT POSITION (0, 0.0, 0.00, 0.000, 0.0000) Use the UP or DOWN key to set the required decimal point position. Choose 0.0

SET THE DISPLAY STEP SIZE. (1, 2, 5, 10, 20, 50, 100, 200, 500) Use the UP or DOWN key to set the required display step size.

SET THE DISPLAY OVER RANGE LIMIT. (MAX. VALUE +99999) Use the UP/DOWN & MOVE RIGHT keys to set the maximum display value above which the display shows over range (all dashes in the top of the display).

SET THE DISPLAY UNDER RANGE LIMIT. (MIN. VALUE -99999) Use the UP/DOWN & MOVE RIGHT keys to set the minimum display value below which the display shows under range (all dashes in the bottom of the display).

Calibrate the

Zero point

Set the Display value

equal to the

Calibration weight

Calibrate

the Span

Calibration

completed

CALIBRATE THE ZERO POINT. (CONVENTIONAL WEIGHING SYSTEM) Display shows the actual input signal in mV/V.

SET THE SPAN CALIBRATION VALUE. Use the UP/DOWN & MOVE RIGHT keys to set the display value equivalent to the calibration weight, e.g. 750 kg.

CALIBRATE THE SPAN. (CONVENTIONAL WEIGHING SYSTEM) Display shows the actual input signal in mV/V. Apply test weights equivalent to the calibration value set in section 2.1. Press the Enter key to store the new Span value

Note:

Choose Filter type IIR (menu 4.2), Low Pass Filter 6 ... 8 (menu 4.1) and wait for ‘No Motion’ in the calibration routine.

Page 18 Manual DAS 72.1

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Flintec DAS 72.1 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual