YASKAWA V1000 Technical Manual page 197

Figure 5.70 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.
Figure 5.71 Frequency Reference Setting by Analog Input with Negative Bias
• Gain = 0%, Bias = 100%, A1 as frequency reference input
This setting leads to an inverse-acting frequency reference. The minimum analog input level (0 Vdc) will produce a
100% frequency reference and the maximum analog input level (10 Vdc) will produce a 0% frequency reference.
Figure 5.72 Frequency Reference Setting by Analog Input with Inverse Gain and Bias Settings
n H3-09: Terminal A2 Signal Level Selection
Selects the input signal level for analog input A2. Be sure to also set DIP switch S1 on the terminal board accordingly for
a voltage input or current input.
No.
H3-09
Setting 0: 0 to 10 Vdc with Lower Limit
The input level is 0 to 10 Vdc. Negative input values will be limited to 0. Refer to the explanation of H3-01, Setting 0.
Refer to Setting 0: 0 to 10 Vdc with Limit on page 195
YASKAWA ELECTRIC SIEP C710606 16C YASKAWA AC Drive – V1000 Technical Manual
Gain = 200 %
Frequecny
reference
100 %
E1-04
Bias = 0 %
Gain = 100 %
Frequency
reference
0
Bias = -25%
Bias = 100 %
Frequency
reference
Gain = 0 %
Name
Terminal A2 Signal Level Selection
0 V
5 V 10 V
H3-01 = 0
2.0 V 10 V
H3-01 = 1
0 V 10 V
Setting Range
5.7 H: Terminal Functions
Default
0 to 3 2
5
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