In part 1 we will already explain what 4-20mA signal and Technical specification and their applications. Now we are going with other features of a 4-20mA signal generator.
How to set Fine and Coarse Adjustments?
The Coarse Adjustment means it covers the Entire range from minimum to maximum, In contrast, the fine adjustment only covers a fraction of the entire range. For Fine-tuning and Coarse-tuning, Rotate the Knob clockwise for “+”, and Anticlockwise for “-” Press and hold the Knob for 2 seconds to enter the parameter setting mode.
Coarse Adjustment:
- To enter the Coarse tuning parameter setting press and hold the Knob for 2 seconds, and enter the password “+–+”
- Now when we enter the F001 Mode rotate the Knob to set the Mode in “0” mode
- Next rotate the Knob in clockwise to enter to that F004 Mde
- This F004 Mode have coarse tuning setting from 1-50 digits
- If we set the coarse tuning value 10, then current varies from 10mA to 11mA, similar for other ranges(1-50)
Fine Adjustment:
- To enter the Coarse tuning parameter setting press and hold the Knob for 2 seconds, and enter the password “+–+”
- Now when we enter the F001 Mode rotate the Knob to set the Mode in “1” mode by rotating the Knob.
- Next rotate the Knob in clockwise to enter to that F005 Mde
- This F004 Mode have coarse tuning setting from 1-50 digits
- If we set the coarse tuning value 10, then current varies from 10.08mA to 10.18mA, similar for other ranges(1-50)
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How to generate Curve Waves?
To generate the Curve waves from the signal generator, you need to enter the F200 mode.
Entering the F200(Curve Output Setting) required password is “-+-+”.
| Index | Designation | Comments | Default |
| F200 | No. of Curves | 0: Not Used 1-9: Segment number | 0 |
| Ft01 | Section 1 Run Time | 0-999 sec. Must be“F200”>0 | |
| FA01 | Section 1 Start current | 3.00-21.00mA | |
| Fb01 | Section 1 End current | 3.00-21.00mA | |
| Ft02 | Section 2 Run time | 0-999 sec | |
| … | … | … | |
| Fb09 | Section 9 End current | 3.00-21.00mA |
- In this Each curve has 3 parameter,
- Section 1 Run time (Ft01) is 0-999sec
- Section 1 Start Current Time (FA01) is 4-20mA
- Section 1 End Current Time (Fb01) is 4-20mA
Examples of Automatic Curve Output setting;
Generating Ramp wave
For generating the curve, we need to enter F200 Mode, by entering the password ”-+-+”.then and F200 is value should be greater than 0. follow the below steps.
- Ft01 means run time for the curve. By varying the Ft01 value to set the running time of the curve.
- FA01 means start current value of the curve(4-20ma).
- FB01 means end current value of curve.
- Similarly for all curves we need the following settings.
Generating Square wave
Generating Sine wave
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