YASKAWA L1000A Technical Manual page 218

5.7 H: Terminal Functions
■ 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).
Both can be used 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 speed reference input (H3-02 = 0):
A 10 Vdc input is equivalent to a 200% speed reference and 5 Vdc is equivalent to a 100% speed reference. Since the
drive output is limited by the maximum frequency parameter (E1-04), the speed reference will be equal to E1-04 above
5 Vdc.
Figure 5.30
• Gain H3-03 = 100%, bias H3-04 = -25%, terminal A1 as speed reference input:
An input of 0 Vdc will be equivalent to a -25% speed reference.
When parameter H3-01 = 0, the speed 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 5.31
H3-09: Terminal A2 Signal Level Selection
■
Selects the input signal level for analog input A2.
No.
H3-09
Setting 0: 0 to 10 Vdc
The input level is 0 to 10 Vdc. Refer to
218
Parameter Name
Terminal A1 Gain Setting
Terminal A1 Bias Setting
H3-01 = 0
Gain = 200%
Speed
reference
100%
E1-04
Bias = 0%
0 V
5 V
Figure 5.30 Speed Reference Setting by Analog Input with Increased Gain
H3-01 = 0
100%
Speed
H3-01 = 0
reference
0
2.0 V
Analog Input
-25%
H3-01 = 1
Figure 5.31 Speed Reference Setting by Analog Input with Negative Bias
Parameter Name
Terminal A2 Signal Level Selection
Setting 0: 0 to 10 Vdc on page 217
Gain = 200%
-10 V
10 V
H3-01 = 1
100%
-10 V -6.0 V
10 V
Voltage
YASKAWA ELECTRIC SIEP C710616 38F YASKAWA AC Drive - L1000A Technical Manual
Setting Range
-999.9 to 999.9%
-999.9 to 999.9%
H3-01 = 1
common_TMonly
100%
E1-04
-5 V
5 V
0 V
10 V
-100%
E1-04
Gain = -200%
common_TMonly
2.0 V 10 V
Analog Input
-25%
Voltage
-100%
E1-04
-150%
Setting Range
0 or 1
for details.
Default
100.0%
0.0%
Default
0