YASKAWA A1000 Series Quick Start Manual page 156

4.6 Basic Drive Setup Adjustments
n H3-03, H3-04: Terminal A1 Gain and Bias Settings
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 (bias).
Use both parameters to adjust the characteristics of the analog input signal to terminal A1.
No.
H3-03
H3-04
Setting Examples
• Gain H3-03 = 200%, bias H3-04 = 0, terminal A1 as frequency reference input (H3-02 = 0):
A 10 Vdc input is equivalent to a 200% frequency reference and 5 Vdc is 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.
Figure 4.29 Frequency Reference Setting by Analog Input with Increased Gain
• Gain H3-03 = 100%, bias H3-04 = -25%, terminal A1 as frequency reference input:
An input of 0 Vdc will be equivalent to a -25% frequency reference.
When parameter H3-01 = 0, the frequency reference is 0% between 0 and 2 Vdc input.
When parameter H3-01 = 1, the motor will rotate in reverse between -10 and 2 Vdc input.
Figure 4.30 Frequency Reference Setting by Analog Input with Negative Bias
n H3-05: Terminal A3 Signal Level Selection
Selects the input signal level for analog input A3.
Be sure to set DIP switch S4 on the terminal board accordingly for multi-function analog input or PTC input. Also
Terminal A3 Analog/PTC Input Selection on page
No.
H3-05
Setting 0: 0 to 10 Vdc
The input level is 0 to 10 Vdc. See the explanation provided for H3-01.
156
Name
Terminal A1 Gain Setting
Terminal A1 Bias Setting
H3-01 = 0
Gain = 200 %
Frequency
reference
100 %
E1-04
Bias = 0 %
0 V
5 V
H3-01 = 0
100 %
Frequency
H3-01 = 0
reference
0
2.0 V
Analog Input
-25%
H3-01 = 1
Name
Terminal A3 Signal Level Selection
Gain = 200 %
100%
E1-04
-10 V -5 V
10 V
H3-01 = 1
100%
-10 V -6.0 V
10 V
Voltage
113.
Refer to Setting 0: 0 to 10 Vdc on page
YASKAWA ELECTRIC TOEP C710616 41G YASKAWA AC Drive - A1000 Quick Start Guide
Setting Range
-999.9 to 999.9%
-999.9 to 999.9%
H3-01 = 1
5 V
0 V
10 V
-100%
E1-04
Gain = -200 %
2.0 V 10 V
Analog Input
-25%
Voltage
-100%
E1-04
-150%
Setting Range
0, 1
Default
100.0%
0.0%
Refer to
Default
0
155.