YASKAWA OYMC V1000, Programming Manual

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1.7 H: Terminal Functions
YASKAWA ELECTRIC SIEP C710606 10A YASKAWA AC Drive - V1000 PRELIM. Programming Manual 175
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Figure 1.68
Figure 1.68 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 1.69
Figure 1.69 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.
10 V 5 V
0 V
Gain = 200 %
100 %
Frequecny
reference
Bias = 0 %
E1-04
2.0 V
0
10 V
Gain = 100 %
Frequency
reference
Bias = -25%
H3-01 = 0
H3-01 = 1