9.ERROR CODE
99
Calibration Error 2
Initial dead load exceeds the zero adjustable range of the F159. Check if the cell
is loaded with any extra object.
If the
Calibration Error 2
persists while the system is loaded correctly, Zero
calibration must be performed again after inserting a resistor bEXC and
–SIG terminals of the load cell for shifting zero point. The relation between input
signal shift and resistor values are summarized in the table below.
・
The values contained in the table assume single 350
Ω
load cell configuration.
・
Temperature coefficient of the resistor directly affect reading accuracy. Use
resistor with temperature coefficient better than 50ppm/
℃
(5ppm/
℃
class
recommended)
Resistor
Voltage shift equivalent strain
Calculated
Approximate
value
μ
-STRAIN
mV/V
875
K
Ω
866
K
Ω
200
0.1
437
K
Ω
442
K
Ω
400
0.2
291
K
Ω
294
K
Ω
600
0.3
219
K
Ω
221
K
Ω
800
0.4
175
K
Ω
174
K
Ω
1000
0.5
146
K
Ω
147
K
Ω
1200
0.6
125
K
Ω
124
K
Ω
1400
0.7
109
K
Ω
110
K
Ω
1600
0.8
97
K
Ω
97.6
K
Ω
1800
0.9
87.3
K
Ω
86.6
K
Ω
2000
1.0
79.4
K
Ω
78.7
K
Ω
2200
1.1
72.7
K
Ω
73.2
K
Ω
2400
1.2
67.1
K
Ω
66.5
K
Ω
2600
1.3
62.3
K
Ω
61.9
K
Ω
2800
1.4
58.2
K
Ω
57.6
K
Ω
3000
1.5
54.5
K
Ω
54.9
K
Ω
3200
1.6
51.3
K
Ω
51.1
K
Ω
3400
1.7
48.4
K
Ω
48.7
K
Ω
3600
1.8
45.9
K
Ω
46.4
K
Ω
3800
1.9
43.6
K
Ω
43.2
K
Ω
4000
2.0
41.5
K
Ω
41.2
K
Ω
4200
2.1
39.6
K
Ω
39.2
K
Ω
4400
2.2
37.9
K
Ω
38.3
K
Ω
4600
2.3
36.3
K
Ω
36.5
K
Ω
4800
2.4
34.8
K
Ω
34.8
K
Ω
5000
2.5
Insert a resistor
+EXC
+SIG
-EXC
-SIG
bEXC and –SIG.