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4 Performing Final Discharge Control
30
Performing Final Discharge
Chapter
4
4-6. Auto free fall compensation
This function is used to automatically compensate for of compensation, a major factor in weighing
errors, and to perform accurate weighing. After set point 3 is complete, the weighing value is sampled
when the complete signal turns ON.
Auto free fall compensation regulation value
Perform auto free fall compensation if the value is in the following range: (final + regulation value) ≧
weighing value ≧ (final - regulation value). In addition, when adjust feeding is enabled in sequence
mode, sample the weighing value before starting adjust feeding.
Example)
- Final setting value 20.000
- Number of times for auto free fall 4 (Computed once every four times)
- Auto free fall compensation regulation value 0.100
- Auto free fall coefficient 2/4
Value added to/subtracted from compensation setting value
Sum of accumulated value of weighing errors
Number of times for auto free fall
× Auto free fall coefficient
Weighing times
Actual weighing
value
Weighing error
Number of times for
auto free fall
Compensation
1 20.050 +0.050 1 0.500
2 20.040 +0.040 2 0.500
3 20.070 +0.070 3 0.500
4 20.080 +0.080 4 0.500
+0.240/4 = 0.060
0.060×2/4 = 0.030
5 20.020 +0.020 1 0.530
6 20.000 0.000 2 0.530
7 20.010 +0.010 3 0.530
8 20.110 (+0.110) Disabled 0.530
9 20.010 +0.010 4 0.530
+0.040/4 = 0.010
0.010×2/4 = 0.005
10 19.880 (-0.120) Disabled 0.535
11 19.990 -0.010 1 0.535
12 20.010 +0.010 2 0.535
13 20.000 0.000 3 0.535
14 19.980 -0.020 4 0.535
-0.020/4 = -0.005
-0.005×2/4 = -0.003
0.532
Sum of accumulated value of weighing errors
Auto free fall compensation coefficient
Add
Invalid due to being outside
auto free fall compensation
regulation value
Add
Auto free fall compensation coefficient
Add