Fobitec WS-2 Manuale utente

User Manual for indicator WS-2

www.fobitec.gr –info@fobitec.gr

Tel. 0030 2310 795686

Fax. 0030 2310 795687

INDUSTRIAL AREA OF SINDOS THESSALONIKI 57022 P.O. BOX 1217 GREECE

CONTENTS

PROLOGUE..................................................................................................................................................3

USEFUL INFORMATION............................................................................................................................3

DESCRIPTION OF INDICATOR WS-2.....................................................................................................4

KEYBOARD FUNCTION.............................................................................................................................5

SYSTEM PARAMETERS........................................................................................................6

“Ad.FiLt”: ADC Filter, Converter filter AD...................................................................6

“Ad.GAIn”: ADC Gain, Converter gain AD.................................................................6

“Ad.noiS.”: ADC noise, Noise level at the load cell input.......................................6

“Ad.driF.”: ADC thermal drift correction......................................................................7

“dec.Pnt.”: Decimal Point position in weight display................................................7

“reSoL.”: Last digit Resolution in weight display.......................................................7

“d.FILt.”: Display Filter ..................................................................................................7

“Pr.Out.n.” (product outputs number).........................................................................7

“Zer.O.Id”: Zero Output ID............................................................................................8

“C.E. O.Id”: Cycle End Output ID................................................................................8

“Zer.dEL.”: Zero Output Delay.....................................................................................8

“SAFE.ti.”: Safe Emptying Time..................................................................................8

“bAtCH”: Batch Mode....................................................................................................9

“bat.PAU”: Batch Pause...............................................................................................9

“Comm.”: Communication Mode...............................................................................10

"PASS": Password, User access to critical operations ........................................10

“rESEt”: Reset, Restoring parameters in initial settings.......................................10

USER PARAMETERS...........................................................................................................11

“For. 1” ... “For. 12”: Formula 1 ... Formula 12. ......................................................11

“P._____”: Maximum “empty scale” weight,.............................................................11

"P.-----": Maximum allowed scale weight....................................................................11

"PAUSΕ": Pause between product outputs...............................................................11

"FALL": Product in fall,.................................................................................................11

“FILtEr”: Filter,...............................................................................................................12

“A.tArE”: Auto Tare.......................................................................................................12

“CLOCk”: Clock............................................................................................................12

“HIStor.”: History..........................................................................................................12

TARE ZERO ...........................................................................................................................12

WEIGHT CALIBRATION ......................................................................................................12

AUTOMATED WEIGHING COUNTER ..............................................................................13

ERROR CODES.........................................................................................................................................13

BASIC TECHNICAL CHARACTERISTICS OF THE UNIT WS-2.......................................................15

DIAGRAM 1.........................................................................................................................................16

DIAGRAM 2.........................................................................................................................................17

DIAGRAM 3: CONNECTION OF OUTPUT UNIT EXPANSIONS WSXT-2..............................18

BASIC TECHNICAL CHARACTERISTICS OF WSXT-2 UNIT...........................................................18

PROLOGUE

Thank you very much for choosing our electronic weighing scale. In order to use this scale

properly, we would like to ask you to read these instructions manual carefully.

USEFUL INFORMATION

-The indicator should be placed in a dry place in order to be protected from rain and from

getting wet, and also from sun exposure for a long period of time.

-The indicator should be placed safely on its base or on a desk. Pay attention, as the

screen can get damaged from falling.

-The keyboard should be cleaned only with a dry cloth (DO NOT USE ANY CHEMICAL

SUBSTANCES)

-The keys are designed to be pressed by hands and you should never use them with any

other object.

-The scale that is connected to the indicator, should be placed in a stable and flat surface,

protected by air, streams, vibrations (and by water, if the scale is placed in an open

environment).

-You should never place weight on the scale higher than the MAXIMUM WEIGHT VALUE.

-You should never perform any welding, if you haven‟t removed earlier all the electronic

accessories (indicator - load cells - printer).

-For the best protection of the indicator, it should always be off when it is not used and also

protect it from over voltages during electric power feeding.

-Turn on the scale 5‟ before use.

-For any additional information or problem of the scale you should contact the customer

service.

DESCRIPTION OF INDICATOR WS-2

1) 6 digit LED display

Display of weight: “-99999” .. “999999” with adjusted decimal point.

Display of parameters, messages, etc.

2) The dot at the bottom right of the display LED serves as an indication of “instability” of the

weight indication. For as long it is on, the weight measurement is unstable.

3) The LED „1‟,‟2‟,‟3‟,‟4‟ show the current condition of the four relay outputs of the machine.

The LED “O.K.” and “START” show the condition of control input “START”/”STOP”.

When the “STOP” connection is off (see Connections), the LED “O.K.” is turned on, when the

“START” connection is off, the LED “START” is turned on. The LED “START” blinks when the

“START” connection is on but the weighing operation is on as well.

4) Keys “MENU”, “ENTER”, “NEXT”, “UP”, “DOWN”

KEYBOARD FUNCTION

In the majority of operations, the keys have the following functions:

MENU:

Enter / exit the menu of parameters adjustment, cancelation of numerical alteration, return a level

back to the menu structure, temporary pause/ cancelation of the weighing process.

Equipped with LED, which lights up / flashes according to the user‟s operations.

ENTER:

Selection of function / parameter, validation of selection / number, passing to the next parameter.

Equipped with LED, which lights up / flashes according to the user‟s operations.

Change of the way of numbers‟ alterations, passing to the next digit during the number change

process. When the process begins, the displayed number can be altered using the keys UP /

DOWN.

It‟s also used to see/delete the automated weighings counter.

DOWN / CAL (calibration) :

Previous menu selection, digit / number reduction during the process of number alteration.

Weighing calibration (CALIBRATION) when the system is at weighing mode and it is allowed

(see system parameter “PASS”).

UP / TARE:

Next menu selection, digit / number increase during the number alteration process. Tare zeroing

(TARE) when the system is at rest.

SYSTEM PARAMETERS

“SYS.Par.”: System parameters

System parameters are set on the menu “SYS.Par.”, on which we have access when it is at

weighing mode and we press the keys “NEXT” and “MENU” simultaneously for 7 seconds. This

menu consists of critical parameters for the function of the indicator.

“Ad.FiLt”: ADC Filter, Converter filter AD

The higher it is, the lower the weighing sample rate per second. This means that the higher it is

the more „unconscious‟ is the indicator in small or abrupt changes.

Value: 0 .. 3 Default: 1

adc filter : Hz

0 : 16.7

1 : 10

2 : 8,35

3 : 5

“Ad.GAIn”: ADC Gain, Converter gain AD

It takes two values 0 και 1. It must be 0 if the load cells connected have sensitivity higher or

equal to 20mV/V, while it must beι 1 if the load cells connected have sensitivity lower or equal to

10mV/V.

Value 0 .. 1 Default: 1

0 : gain X 1

1 : gain X 128

“Ad.noiS.”: ADC noise, Noise level at the load cell input

It operates as a threshold for noise / microchanges rejection.

The higher the value the more „unconscious‟ the system becomes in microprojections, which

means it takes the measurement as „stable‟ easier, at the same time though the response time

increases in small weight changes.

It is influenced by the previous parameter System Parameter ADC Gain. Suggested values for

ADC Gain==0 are 2...15 while for ADC Gain==1 it is 30...100

Value: 1 .. 250 Default: 10

“Ad.driF.”: ADC thermal drift correction,

Thermal drift correction for the converter AD

Displayed units per second

Value: 0,0 .. 1,0 Default: 0,0

When it is higher than 0, it eliminates the very slow changes in the indication that usually

happens due to the thermal drift of the load cell and the converter AD. For example, if it is 0,2 it

eliminates the drift lower or equal to 0,2 units per second, which means 1 unit per 5 seconds,

while if it is 0,5 it eliminates 0,5 units per second, which means 1 unit per 2 seconds.

“dec.Pnt.”: Decimal Point position in weight display

Value: 0 .. 5 Default: 0

0 : “123456” …5 : “1.23456”

“reSoL.”: Last digit Resolution in weight display

Value: 1, 2, 5 Default: 1

“d.FILt.”: Display Filter

Weight Display Filter. With 0 value it is completely rejected and the display response in

alterations becomes more direct. Higher values will filter more microchanges but it will increase

the indication response time.

Value: 0 .. 10 Default: 5

“Pr.Out.n.” (product outputs number)

Definition of the number of relay outputs for products

Value: 1 .. 16 Default: 4

“P.1 O.Id”: Product #1 Output ID

Relay output serial number for product #1. If it is 0, there is no output for this material.

Value: 0 .. 4 Default: 1

“P.2 O.Id”: Product #2 Output ID

Relay output serial number for product #2. If it is 0, there is no output for this material

Value: 0 .. 4 Default: 2

“P.3 O.Id”: Product #3 Output ID

Relay output serial number for product #3. If it is 0, there is no output for this material

Value: 0 .. 4 Default: 3

“P.4 O.Id”: Product #4 Output ID

Relay output serial number for product #4. If it is 0, there is no output for this material

Value: 0 .. 4 Default: 4

“Zer.O.Id”: Zero Output ID

Definition of serial number of relay output that is activated when the value of the weight is zero. If

it is 0, it does not exist.

Value: 0 .. 4 Default: 0

“C.E. O.Id”: Cycle End Output ID

Definition of serial number of relay output that is activated when the declared formula is over. If it

is 0, it does not exist.

Value: 0 .. 4 Default: 0

“Zer.dEL.”: Zero Output Delay

Definition of delay of the relay output activation when the weight value is zero, in seconds.

Value: 0.0 .. 3600.0 Default: 1.0

“SAFE.ti.”: Safe Emptying Time

Definition of the minimum relay output time of the relay output that is activated when the selected

formula is finished, in seconds.

Value: 0.0 .. 3600.0 Default: 1.0

“FunCti.”: Function Mode

Value: 0 .. 3 Default: 0

0 : weighing formula

1 : comparator mode

2 : comparator mode with “outputs active before the weight completion”

3 : depletion function

Description of formulas functions (Silo):

We define the kilos of each product for example P1: 10 kilos, P2:5 kilos and P3: 20 kilos.

Once we set the system on, the output relay of product 1 is activated up to the kilos we have set

(10 kg in our example). When the kilos reach the set value, the output of the 1st relay is de-

activated and it arms the output of the 2nd relay until it reaches the kilos we have set (in our

example 10+5=15 kgs). Then when it reaches the value we have set, the system de-activates

the 2nd relay and activates the 3rd relay until it reaches the value that we have set in P3. The

final weight is equal with the sum of all the products we have set (in our example 10+5+20=35

kgs).

Description of comparator function (Bagging):

We define the set points for example P1: 10 kgs, P2:15 kgs. By pressing start in our

system, we don‟t have any relay output activated. When we reach the kilos that we have set in

P1 then the 1st relay output is activated and when we reach the kilos we have set in P2 the 2nd

output is activated at the same time as the 1st.If during this operation the weight value fluctuates

the respective relay output are activated or de-activated.

Description of comparator function with the outputs activated before the weight addition:

Similarly to the comparator function, only in this case the corresponding relay outputs at

the beginning, start activated and when it reaches the weight of the set points we have set, they

are de-activated.

Description of discharge operation:

Enables an output relay when we begin operation until a STOP is given manually or with

automation (if for example we use the activated output when the weight value reaches 0)

“bAtCH”: Batch Mode

Repeating weighing.

Value: 0 .. 1 Default: 0

When it is "1", the user inserts the number of automatic reps after the formula selection (formula).

“bat.PAU”: Batch Pause

Waiting time between repetitive weighing in seconds.

Value: 0.0 .. 25.0 Default: 0.0

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