YASKAWA OYMC V1000

1.7 H: Terminal Functions
174 YASKAWA ELECTRIC SIEP C710606 10A YASKAWA AC Drive - V1000 PRELIM. Programming Manual
Note: If not using an input terminal or if using it in the through-mode, be sure to set that terminal to
“F”.
■ H3-03/H3-04: Terminal A1 Gain/Bias Setting
Parameter H3-03 sets the level of the selected input value that is equal to 10 Vdc input at
terminal A1 (Gain).
Parameter H3-04 sets the level of the selected input value that is equal to 0 V input at
terminal A1.
Both can be used to adjust the analog input A1 characteristics.
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.
Figure 1.67
Figure 1.67 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.
No. Name Setting Range Default
H3-02 Terminal A1 Function Selection 0 to 31 0
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%
0 V 10 V
Gain = 100 %
Frequency
reference
Bias = 0 %