5.7 H: Terminal Functions
178 YASKAWA ELECTRIC SIEP C710606 44B YASKAWA AC Drive T1000V Technical Manual
Setting 1: 0 to 10 Vdc without Limit
The input level is 0 to 10 Vdc. Negative input values will be accepted.
Example: Terminal A1 is set to supply the frequency reference, and the bias (H3-04) is set to -100%. The frequency
reference can be set from 0 to 100% with an analog input of 5 to 10 V. With an input of 0 to 5 V, the frequency reference
can be set from -100% to 0%. The drive reverses the motor rotation with negative input.
Figure 5. 57
Figure 5.57 Analog Input without Limit (Bias Setting -100%)
■ H3-02: Terminal A1 Function Selection
Determines the function assigned to analog input terminal A1. Refer to Multi-Function Analog Input Terminal Settings
on page 180 for a list of functions and descriptions.
Note: If not using an input terminal or if using it in the through-mode, be sure to set that terminal to “F”.
■ 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.
Both can be used to adjust the analog input A1 characteristics.
Default Settings
Using the factory default settings for the analog input’s function, gain, and bias, the 0 to 10 Vdc signal at the analog input
will yield a 0 to 100% frequency reference span.
Figure 5. 58
Figure 5.58 Analog Input A1 Default Characteristics
No. Name Setting Range Default
H3-02 Terminal A1 Function Selection 0 to 1F 0
No. Name Setting Range Default
H3-03 Terminal A1 Gain Setting -999.9 to 999.9% 100.0%
H3-04 Terminal A1 Bias Setting -999.9 to 999.9% 0.0%
0V
10 V
100%
-100%
Analog input
voltage
Analog input
value
0 V 10 V
Gain = 100 %
Frequency
reference
Bias = 0 %
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