YASKAWA FSDrive-MV1000 Parameter Manual page 188

2.7 H: Terminal Functions
H3-02: Analog Input 1 Function Selection
■
Determines the function assigned to analog input 1. Refer to
No.
H3-02
H3-03, H3-04: Analog Input 1 Gain and Bias Settings
■
Parameter H3-03 sets the level of the selected input value that is equal to 10 Vdc input at analog input 1 (gain).
Parameter H3-04 sets the level of the selected input value that is equal to 0 V input at analog input 1 (bias).
Both can be used to adjust the characteristics of the analog input signal to analog input 1.
No.
H3-03
H3-04
Setting Examples
• Gain H3-03 = 200%, bias H3-04 = 0, analog input 1 as frequency reference input (H3-02 = 0):
An input of 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.
Figure 2.63
Figure 2.63 Frequency Reference Setting by Analog Input with Increased Gain
• Gain H3-03 = 100%, bias H3-04 = -25%, analog input 1 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 in response to input between -10 and 2 Vdc input.
Figure 2.64
Figure 2.64 Frequency Reference Setting by Analog Input with Negative Bias
188
Name
Analog Input 1 Function Selection
Name
Analog Input 1 Gain
Analog Input 1 Bias
H3-01 = 0
Gain = 200 %
Frequecny
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
Bias = -25%
H3-01 = 1
Analog Input Terminal Settings on page 190
0 to FF
-999.9 to 999.9%
-999.9 to 999.9%
Gain = 200 %
-10 V -5 V
10 V
H3-01 = 1
100%
-10 V -6.0 V
Bias = -25%
10 V
Voltage
YASKAWA ELECTRIC EZZ010930 FSDrive-MV1000 Parameter Guide
Setting Range
Setting Range
H3-01 = 1
100%
E1-04
5 V
0 V
10 V
-100%
E1-04
Gain = -200 %
2.0 V 10 V
Analog Input
Voltage
Gain = -100%
E1-04
Gain = -150%
for details.
Default
0
Default
100.0%
0.0%