Table of Contents
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Table of Contents
Related Manuals for VPG BHL Nobel AST 3
Summary of Contents for VPG BHL Nobel AST 3
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Page 3: Table Of Contents
Operating instructions, Quick operation Contents Introduction ............... 1 Operating instruction General ............2 Power supply ..........2 Start-up ............2 View alternatives ..........3 Zero setting ............ 4 Installation Mechanical installation ........5 Electrical installation ........5 Set-up programme deltaCOM ......6 Quick set-up, calibration General ............ -
Page 5: Introduction
Analogue Signal Transmitter AST 3 Introduction AST 3 is a high performance transmitter, designed for industrial measuring by means of strain gauge transducers. The compact module is easily installed on a DIN rail or a flat surface. Two slightly different versions of the transmitter module are available: AST 3B, designed for operation together with a control unit. -
Page 6: Operating Instruction
Operating instructions, Quick installation Operating instructions General This section describes display and function key operation for AST 3P in normal Operating mode. Power supply Power supply to the signal transmitter should not be turned off during week-ends and over-night. Continuous power supply to electronics and transducers prevents moisture condensation in the units. -
Page 7: View Alternatives
Analogue Signal Transmitter AST 3 View alternatives AST 3P set-up may allow display of more views than Weight value. In that case the function keys are used, according to figure 3, to select a view. Weight value, normal view. This view displays the actual measurement value, here called weight value, and the instrument address. -
Page 8: Zero Setting
Operating instructions, Quick installation Zero setting Zero setting in normal operation can be performed if the ‘Zero setting’ view is enabled, see previous page, but that zero setting is only temporary. To perform a zero setting, saved in the instrument memory, the normal operation must be interrupted and the following sequence in set-up mode carried out. -
Page 9: Installation Mechanical Installation
Analogue Signal Transmitter AST 3 Installation Mechanical installation Each signal transmitter module AST 3 contains several circuit boards, built into a protective plastic housing. The module can be snap-mounted on a 35 mm wide DIN rail, or mounted on a flat surface by two 4 mm screws. Mounted modules should have at least 10 mm free space on each side. -
Page 10: Set-Up Programme Deltacom
Operating instructions, Quick installation Power supply Terminals 17, 18. The AST 3 module is powered by 24 V DC. Rail mounted power supplies can be ordered from Nobel Weighing Systems. Analogue output Terminals 24, 25. OUT+ The measurement value is presented as a current or voltage signal, according to set-up selection. -
Page 11: Quick Set-Up, Calibration General
Analogue Signal Transmitter AST 3 Quick set-up, calibration General Set-up of all parameters in AST 3 can be performed from the programme deltaCOM by serial communication. For AST 3P set-up can also be performed from the panel of the module, for example the ‘Quick set-up’ of certain parameters described in this section. - Page 12 Operating instructions, Quick installation 2. Showing the parameters. Press ENTER. Language English The first parameter in ‘Quick set-up’ will be displayed. 3. Edit the language (a choice parameter). ‘Language’ is a choice parameter with a number of alternatives available. Press ENTER to make editing possible. Language English A cursor starts blinking to the left on the parameter value line.
- Page 13 Analogue Signal Transmitter AST 3 5. Edit the instrument resolution. With this parameter, the number of decimals and the resolution of the last digit of the measurement value are defined. This parameter influences all measurement values using the measurement unit. Press to get parameter ‘Resolution’...
- Page 14 Operating instructions, Quick installation 7. Edit the analogue output type. The signal type for the analogue output is defined by parameter ‘Ana. output type’ that has a number of alternatives. Press to get parameter ‘Ana. output type’ displayed. Ana. output type 4-20mA Press if the parameter should be edited, and make the editing...
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Page 15: Data Sheet Calibration
Analogue Signal Transmitter AST 3 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 point 1. - Page 16 Operating instructions, Quick installation 11. Set the rated load for one transducer. It is assumed that all transducers connected to the instrument have the same rated load and impedance. The rated load for one transducer, expressed in the data sheet unit used to calculate the conversion factor (see 9. on page 11), should be entered.
- Page 17 Analogue Signal Transmitter AST 3 14. Read the zero offset. By installation later of a replacement instrument, it is useful to know the total zero offset value for the scale. Press to get parameter ‘Zero offset’ displayed. Zero offset X.XXX Make a note of the zero offset value in the Quick set-up list, appendix 1.
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Page 18: Dead Weight Calibration
Operating instructions, Quick installation Dead weight calibration This is the most accurate calibration type. It requires that known weights to at least two-thirds of the scale capacity are available. Below, a dead weight calibration in two points is described. Before editing of these parameters is started, set-up of common parameters, described in point 1. - Page 19 Analogue Signal Transmitter AST 3 10. Set the value for calibration point 2. This parameter defines the known load on the scale in the higher calibration point. Press to get the parameter ‘Value cal. p.2’ displayed. Capacity 500.00 The displayed parameter value is the load on the scale that was set for the higher calibration point in the last calibration.
- Page 20 Operating instructions, Quick installation 12. Read the transducer signal for calibration point 2 (read only). Press to get parameter ‘Transd.sign. p.2’ displayed. Transd.sign. p.2 X.XXXXX mV/V Make a note of the parameter value in the Quick set-up list, appendix 1. 13.
- Page 21 Analogue Signal Transmitter AST 3 16. Save the changes. Before ‘Quick set-up’ is closed, the new parameter values should be saved, i.e. copied to a specific memory in the instrument. Alternatively the new values can be cancelled, and all parameters will resume the values they had before ‘Quick set-up’...
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Page 22: Parameter Survey
Operating instructions, Quick installation Parameter survey Operating mode Start up/Reset 123.4 kg 001 Weight value R1:On R2:On for 2 seconds Enter password: Shown only if (Wrong)(Correct) 'Security lock' is On. Quick set-up Set-up mode, Main menu Main menu Quick set-up Exit set-up Shown only if Language... -
Page 23: Quick Set-Up List
Analogue Signal Transmitter AST 3 Quick set-up list for AST 3 ..Address: ... Location/Notes: ......................Programme name: ......Ser. no.: ......Date: ....Parameter Default Set-up name value value Language English ............Measurement unit ............Resolution ............ - Page 24 Operating instructions, Quick installation...
- Page 26 Document no. 35158 Article no. 600 243 R11 © Vishay Nobel AB, 2011-05-11 Subject to changes without notice. www.blhnobel.com...
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