YASKAWA 1000 Series Installation Manual page 23

Setting 1: Combined Inputs
■
This setting combines the three input signals of the option into one frequency reference
signal as illustrated in
Set parameter b1-01 to 3 and set parameters F2-02 and F2-03 to set the gain and bias settings
for the combined input signal. Pay special attention to the internal gains and interaction
among inputs as indicated in
Figure 13
V2
10 V to 10 V
or 4 to 20 mA
V1
10 V to 10 V
or 4 to 20 mA
V3
10 V to 10 V
or 4 to 20 mA
Adjusting Input Levels with F2-02 and F2-03
The gain set to parameter F2-02 along with the combined input signal determines the
percentage of maximum output frequency used as the frequency reference when the bias set
to F2-03 is 0.
Note: For a single channel, a voltage input of 10 V or a current input of 20 mA is referred as 100%
The bias set to parameter F2-03 determines the percentage of the maximum output
frequency used as the frequency reference when the combined input signal is 0%.
Note: For a single channel, a voltage input of 0 V or a current input of 4 mA is referred as 0%
Example 1: If the gain in F2-02 is set to 50% and the bias in F2-03 is set to 0%, a combined
input signal of 100% yields a frequency reference 50% of the maximum frequency
reference. A combined input of 200% yields a frequency reference equal to the maximum
output frequency.
Example 2: If the gain in F2-02 is set to 200% and the bias in F2-03 is set to 0%, a combined
input signal of 50% yields a frequency reference equal to the maximum output frequency.
Increasing the input signal will not create a higher reference since maximum frequency
reference has already been reached.
Example 3: If the bias in F2-02 is set to 30% and the gain in F2-03 is set to 100%, a 0%
combined signal yields a frequency reference 30% of the maximum output frequency.
Inputting a combined reference of 70% will yield a reference of equal to the maximum
output frequency. Increasing the input signal will not create a higher reference since
maximum frequency reference has already been reached.
YASKAWA ELECTRIC TOBP C730600 38C 1000-Series Option AI-A3 Installation Manual
Figure 13.
Figure 13
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×
1/10
Figure 13 Combining Inputs for the Frequency Reference
when setting this function.
+
+
F2-02
+
6 Related Parameters
+
Frequency reference
+
from the option
AI
F2-03
23