No. Name Setting Range Default
H3-03 Terminal A1 Gain Setting -999.9 to 999.9% 100.0%
H3-04 Terminal A1 Bias Setting -999.9 to 999.9% 0.0%
Default Settings
Using the factory default settings for the analog input’s function, gain, and bias, the 0 to 10 Vdc signal at the analog input will
yield a 0 to 100% frequency reference span.
0 V 10 V
Gain = 100 %
Frequency
reference
Bias = 0 %
Figure 5.28 Analog Input A1 Default Characteristics
Setting Examples
•
Gain H3-03 = 200%, A1 as frequency reference input:
An input 10 Vdc will be equivalent to a 200% frequency reference and 5 Vdc will be equivalent to a 100% frequency
reference. Since the drive output is limited by the maximum frequency parameter (E1-04), the frequency reference will be
equal to E1-04 above 5 Vdc.
10 V5 V
0 V
Gain = 200 %
100 %
Frequecny
reference
Bias = 0 %
E1-04
Figure 5.29 Frequency Reference Setting by Analog Input with Increased Gain
• Bias H3-04 = -25%, A1 as frequency reference input
An input of 0 Vdc will be equivalent to a -25% frequency reference.
When parameter H3-01 = 0 the minimum frequency reference is 0% between 0 and 2.5 Vdc input. An analog input of 2.5
to 10 Vdc will now be the same as 0 to 100% of the frequency reference span.
When parameter H3-01 = 1, the motor will rotate in reverse between 0 and 2.5 Vdc input.
2.0 V
0
10 V
Gain = 100 %
Frequency
reference
Bias = -25%
H3-01 = 0
H3-01 = 1
Figure 5.30 Frequency Reference Setting by Analog Input with Negative Bias
5.6 H: Terminal Functions
YASKAWA ELECTRIC SIEP C710606 31B YASKAWA AC Drive – J1000 Technical Manual
109
5
Parameter Details
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