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Transmitter  WST 3 

  

13 

Data sheet calibration  

This calibration type can be used when transducer data is available, the load is 
evenly distributed on the support points and the weighing installation is not influenced 
by disturbing external forces.  
 
Before editing of the following parameters is started, set-up of common parameters, 
described in points 

1. – 8.

 on pages 9 – 12 should be performed.  

 

9. Edit the conversion factor.  

If the ‘Data sheet’ alternative was chosen at 

8. 

on page 12, next parameter will 

be ‘Conv. factor’. This parameter defines a constant by which a weight value, 
expressed in the measurement unit, should be multiplied to be expressed in  
the data sheet unit. 

 

Default value for the parameter, 9.80665, can be used when the data sheet unit  
is Newton (N) and the measurement unit is ‘kg’.  
If data sheet unit and measurement unit are equal, the value should be 1.00000.  

Press  

+

  to get the parameter ‘Conv. factor’ displayed.  

Conv. factor
9.80665

 

Press ENTER to make editing possible.  

Conv. factor
9.80665

 

A cursor starts flashing to the left on the parameter value line.  
Now editing can be performed for each digit individually.  
See point 

6.

 on page 11 (numeric parameter).  

Press ENTER for 2 seconds when the conversion factor is set to a correct value.  

2 seconds

Conv. factor
9.80665

 

Cursor and leading zeros disappear, and the edited conversion factor will be active.  

 

10. Edit the number of transducers.  

This parameter defines the total number of support points for the load,  
including transducers and fixed supports.  

Press  

+

  to get the parameter ‘Number of transd’ displayed.  

Number of transd
3

 

Press 

 if the parameter value should be edited, and make the editing  

like in point 

6.

 on page 11 (numeric parameter).  

Summary of Contents for WST 3

Page 1: ...Transmitter WST 3 From prog name W001A100 Operating instructions Quick installation GB ...

Page 2: ......

Page 3: ...n Operating mode 4 Taring 5 Display of Gross Net 5 Zero setting 6 Installation Mechanical installation 7 Electrical installation 7 Set up programme deltaCOM 8 Quick set up calibration General 9 Common parameters 9 Data sheet calibration 13 Dead weight calibration 16 Parameter survey 20 Quick set up list App 1 ...

Page 4: ...scription can also be performed For a complete transmitter description refer to publication 600 630 WST 3 Technical Manual This description deals with the following points Measurement by the WST 3 panel Quick installation Quick set up for WST 3 Data sheet calibration Deadweight calibration in two points Set up programme deltaCOM This description does NOT deal with the following points Connection o...

Page 5: ...e right is pressed and the transmitter enters Operating mode If an error occurs the start up halts and an error message is displayed Error codes and error corrections are described in the Technical Manual for WST 3 section 8 Troubleshooting As WST 3 enters in Operating mode the first view is a standard view It contains the measurement value status of the used relays R1 R2 1 on or 0 off and at the ...

Page 6: ...off and an area for the Modbus address or information about the serial communication Zero setting This view is made available by parameter Zero function It displays the actual weight value as net weight Net or gross weight As gross weight is displayed it can be set to zero by the ENTER key By zero setting of the gross weight the actual tare value is also set to zero Start up Reset L1 99999 9 kg Ze...

Page 7: ...e transmitter serial number and the lower line displays the name of the installed programme Profibus status This view is always available The upper line displays the Profibus address of the transmitter and the lower line contains status information for the Profibus communication Taring Taring means storing the actual gross weight as a tare value and switching WST 3 over to display of net weight Th...

Page 8: ...text Main menu Quick set up is displayed Press ENTER 5 The first parameter name Language is displayed Press a number of times until Set zero is displayed The parameter value for Set zero is a live weight value 6 Press The parameter value is set to zero and a flashing cursor appears to the left on the lower line The zero setting can be cancelled by pressing 7 Press and hold for 2 seconds to confirm...

Page 9: ...les with other frequencies or high power an even wider distance is preferable 4 wire connection should be used if the integrated transducer cable can be connected directly at WST 3 By 4 wire connection excitation and sense must be interconnected at the transmitter see diagram below The cable shield and terminal 5 should be connected to earth via the mounting rail 6 wire connection should be used i...

Page 10: ...erminals and connected according to the diagrams Refer to manufacturer instructions for termination at the control unit PC or at a possible converter unit Connect the cable shield to ground preferably to a ground terminal at the mounting rail Set up programme deltaCOM Transmitter WST 3 should be connected to transducer s and power supply Then it is possible to perform a set up from the front panel...

Page 11: ...efined loads on the scale Before selection of calibration method the value of some common parameters must be set All parameter values from the calibration should be noted in the set up list see Appendix 1 These values are useful later if the transmitter must be replaced Common parameters These parameters define the language measurement unit and resolution used by the transmitter and also the capac...

Page 12: ...o step forwards to next alternative or press to step backwards to the previous alternative until the correct alternative is displayed Language alternatives Press ENTER for 2 seconds to accept the displayed alternative 2 seconds Language English The cursor disappears and the displayed alternative is activated 4 Edit the measurement unit for the transmitter By this parameter the measurement unit for...

Page 13: ... i e the weight value that corresponds to full range at the analogue output Press to get the parameter Capacity displayed Capacity 500 00 kg Press ENTER to make editing possible Capacity 0500 00 kg A cursor starts flashing to the left on the parameter value line indicating which digit that can be edited Press ENTER to move the cursor step by step to the right in the parameter value to the digit to...

Page 14: ...bration types can be chosen in Quick set up Data sheet and Deadweight As a new calibration shall be performed WST 3 must first be set for editing indicated by a cursor at the parameter value Then one of the alternatives must be chosen and accepted If a new calibration shall be performed press ENTER to switch the transmitter into set up mode Calibration type Data sheet A cursor starts flashing to t...

Page 15: ... is Newton N and the measurement unit is kg If data sheet unit and measurement unit are equal the value should be 1 00000 Press to get the parameter Conv factor displayed Conv factor 9 80665 Press ENTER to make editing possible Conv factor 9 80665 A cursor starts flashing to the left on the parameter value line Now editing can be performed for each digit individually See point 6 on page 11 numeric...

Page 16: ...port points the rated output should be set to 0 00000 Press to get the parameter Rated output 1 displayed Rated output 1 2 03900 mV V Press if the parameter value should be edited and make the editing like in point 6 on page 11 numeric parameter Parameters will follow for the number of support points given at 10 on page 13 Set the parameter value to the rated output for each transducer fixed suppo...

Page 17: ...lues should be saved i e copied to a specific memory in the transmitter Alternatively the new values can be cancelled and all parameters will resume the values they had before Quick set up was started Press ENTER to get the sub menu displayed Save changes No Esc Yes Press if you do not wish to exit from the set up mode Press to answer Yes and save the new parameter values Press to answer No and ca...

Page 18: ...ayed parameter value is the load on the scale that was set for the lower calibration point in the last calibration normally zero unloaded scale Press ENTER Value cal p 1 XXXX XXX kg Actual measurement value for the scale is displayed as a live weight value with a cursor and one decimal more than what is set in parameter Resolution Check the load on the scale normally unloaded Press ENTER again to ...

Page 19: ...diting possible Value cal p 2 0500 00 kg The displayed parameter value is the value for the higher calibration point from the last calibration with leading sign and a cursor The parameter value can be edited according to point 6 on page 11 numerical parameter to correspond to the actual load of known weights on the scale Press ENTER for 2 seconds 2 seconds Value cal p 2 XXX XX kg Editing is finish...

Page 20: ...or the unloaded scale Press to get parameter Set zero displayed and check that the scale is unloaded Set zero XXXX XXX kg Press ENTER to set the parameter value to zero Set zero 0000 00 kg The value is set to zero with leading sign and a flashing cursor Press ENTER for 2 seconds 2 seconds Set zero 0000 000 kg The cursor disappears and the zero setting is accepted 14 Read the zero offset By possibl...

Page 21: ...ll resume the values they had before Quick set up was started Press ENTER to get the sub menu displayed Save changes No Esc Yes Press if you do not wish to exit from the set up mode Press to answer Yes and save the new parameter values Press to answer No and cancel the new parameter values In both cases Quick set up is finished The transmitter switches over to Operating mode displaying a measureme...

Page 22: ...0 0 kg 2 03900 mV V 2 03900 mV V 2 03900 mV V Weight value 123 4 kg R1 1 R2 1 001 Start up Reset Quick set up Quick set up Language Resolution Measurement unit Main menu English kg 0 1 kg Capacity 500 0 kg Ana output type 4 20mA Exit set up Main menu Save changes No Esc Yes for 2 seconds Operating mode Set up mode Transd sign p 1 0 00000 mV V Enter password Wrong Correct Shown only if Security loc...

Page 23: ...unit kg Resolution 0 1 Capacity 500 0 Ana output type 4 20mA Calibration type Data sheet Conv factor 9 80665 Number of transd 3 Rated load 2000 0 Rated output 1 2 03900 Rated output 2 2 03900 Rated output 3 2 03900 Rated output 4 2 03900 Value cal p 1 0 0 Value cal p 2 500 0 Transd sign p 1 0 00000 Transd sign p 2 1 66631 Zero offset 0 00 Appendix 1 Quick set up list ...

Page 24: ...Operating instructions Quick installation ...

Page 25: ......

Page 26: ...Publication 600 675 R3 Ä O 950 267 Vishay Nobel AB 03 12 Subject to changes without notice ...

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