4-139
Example:
When the internal gain of AI1 (04-02) is set to 100% and AI2 to 5V (for example FGAIN = 50%), the
reference frequency of terminal AI1 will be 50%, as shown in Fig. 4.4.29.
Figure 4.4.29 Frequency reference gain adjustment (example)
04-05/04-10=2: Frequency Reference bias (FBIAS)
Multi-function analog input terminal AI2 can be used to adjust the frequency reference bias of AI1.
The total frequency reference bias of terminal AI1 is the sum of internal bias set by parameter 04-03 and
FBIAS. The maximum frequency reference for AI1 is 100%.
Figure 4.4.30 Bias adjustment
Example:
Terminal AI1 input is 0V, 04-02 = 100% (AI1 gain), 04-03 = 0% (AI1 bias) and terminal AI2 input is 3V. The
reference frequency will be 30% as shown in Fig.4.4.31.
Figure 4.4.31 Frequency Reference bias adjustment (example)
04-05/04-10=3: Output Voltage Bias (VBIAS)
Multi-function analog input AI2/AI3 can be used to adjust the output voltage. The total output voltage of
inverter is the sum of output voltage based on the selected V/F curve (01-00=F) and VBIAS.
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