Dedoussis Engineering WT520 Manual Download Page 19

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Dedoussis Engineering LTD

e-Batch Concrete

- 19 -

There is a maximum percentage of zeroing at which the

program will allow us to set the zero offset to any scale. In

case of larger values, the user has two options to overcome

this restriction.

•

From the factory setup, we change the percentage of

allowed zero weight.

•

Make a recalibration in order to create a new absolute

zero with WT520 configuration tool.

DEDOUSSIS ENGINEERING LTD.

20 Neratzoulas Str. Acharnai

13671, Athens

GREECE

tel. (0030) 210-2409990

Fax. (0030) 210-2445970

e-mail: [email protected]

www.e-batch.com

Summary of Contents for WT520

Page 1: ...y years of continuous operation Please read this manual before installing or using the program For any questions please do not hesitate to contact us www e batch com DEDOUSSIS ENGINEERING LTD 20 Neratzoulas Str Acharnai 13671 Athens GREECE tel 0030 210 2409990 Fax 0030 210 2445970 e mail sales dedoussis com Email support dedoussis com ...

Page 2: ...ool INTRODUCTION pg x CHAPTER 1 Connecting with the PLC CHAPTER 2 Scales Installation 2 1 Adding a New Scale 2 2 Changing Scale configuration 2 3 Measurement parameters of a scale 2 4 Calibrating a scale 2 4 1 Calibration by weight 2 4 2 Calibration by mV V 2 4 3 TAC ...

Page 3: ...utilizing the Internet protocol suite TCP IP and UDP telegrams so the members should be on the same network and share same network parameters e g subnet and basic address and permissions from the local firewall The most common subnet for local network is 192 168 xxx xxx IPv4 format so please check that the local pc and plc belong to the same network range for the three first group of numbers even ...

Page 4: ...Dedoussis Engineering LTD e Batch Concrete 4 First locate the executable file WT520 configuration tool in the Start menu It is located in the Dedoussis Engineering Program Group tree ...

Page 5: ... e Batch Concrete 5 CHAPTER 1 Connecting with the PLC In a multi network workstation where more than one network interfaces are existing it is important to chose the network adapter that has the right path connection to our PLC ...

Page 6: ...ssis Engineering LTD e Batch Concrete 6 Now that the right network adapter has been chosen we can see the available PLC that reside on our network We select the one that we want and press the Connect button ...

Page 7: ...e detailed browsing of the connected Unit s parameters Switching to this tab we get live hardware info of the system The middle section of this screen named WT 520 Weight deals with the existing Scales The grey colour shows that no scales have been configured to work on our system The way to add a new scale is to physically connect it and then press the INSTALL SCALES button A new window pops up ...

Page 8: ...oncrete 8 and the program asks which of the 5 available scales is going to be connected After a short period of searching and configuring the new scale the program shows the possitive result with a green light on the corresponding place ...

Page 9: ...is Engineering LTD e Batch Concrete 9 We have to press save and the system will reboot with the new configuration Connecting again will show us the new hardware status and a real time value from the new scale ...

Page 10: ... there are two buttons one for a temporary Zero for the scale until the next power down and the calibrate button 2 4 Calibrating a scale Now with the scale connected we can proceed in changing the scale parameters and calibration data This is done by pressing the C button A new window pops up where we have two option tabs ...

Page 11: ...ibration weight 30 F S D to calibrate our scale The program in two steps asks for empty scale and then loaded scale and calculates the gain of the system It is important that the no motion range and the stabilization time take care of possible vibration on the scale to avoid a not stable error during the calibration steps ...

Page 12: ...cause of the stable and accurate manufacturing and detailed certificates of modern load cells Here we have two options One is to enter Zero point and Full Scale point by mV V or Zero point by the actual weight of the scale and Full Scale point by mV V The second way is the most used in any occasion As a rule of thumb the LDUxx units work with ZERO FULL LOAD 2 4mV V This has to be ...

Page 13: ...and the scale full capacity After pressing the CALIBRATE button the program asks for empty scale and then finalizes the system It is important that the no motion range and the stabilization time take care of possible vibration on the scale to avoid a not stable error during the calibration steps ...

Page 14: ...Dedoussis Engineering LTD e Batch Concrete 14 As we see after pressing the CLOSE button our scale shows 0 0 weight and the TAC number is incremented since the calibration data have changed ...

Page 15: ...ion of approval to make the TAC available to the weight display indicator or console on demand Restrictions upon usage when in Approved applications A number of performance restrictions must come into force These restrictions are the number of display divisions which may become limited to 10000 divisions and the sensitivity per display division which becomes 0 7uV per division Once installed in th...

Page 16: ... 07 03 This approval will allow the use in approved weighing systems throughout Europe and in many other countries of the World To achieve approval on a particular application it will be necessary to satisfy the relevant Governmental Trading Standards Authority that the requirements of the various rules and regulations have been satisfied This task is greatly simplified if the key components of th...

Page 17: ... client by adding our functional parameters and customizing our company data and the texts that will be written on the reports Some of the options that we will discuss in this chapter does not reside inside the tab menu but only on the main system menu By clicking on the Zero scales weight menu or side tab bar Icon the dialogue on the following page appears This dialogue gives the ability to chang...

Page 18: ...e to select the scale we want to change the zero offset After a short time of communication with the PLC the current scale weight appears in the third and fourth section of the dialogue We can set this value as zero if it is less than or equal with the current value shown on the right of the edit box ...

Page 19: ...alues the user has two options to overcome this restriction From the factory setup we change the percentage of allowed zero weight Make a recalibration in order to create a new absolute zero with WT520 configuration tool DEDOUSSIS ENGINEERING LTD 20 Neratzoulas Str Acharnai 13671 Athens GREECE tel 0030 210 2409990 Fax 0030 210 2445970 e mail sales dedoussis com www e batch com ...

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