YASKAWA GA700 Technical Manual page 828

11.7 F: Options
Set F2-01 = 0 to increase the precision of A/D conversion when you use the functions for terminals A1 to A3 on
the drive as they are. You can input the MFAI signal from terminals V1 through V3 for AI-A3. The functions for
terminals A1, A2, and A3 on the drive are sent to terminals V1, V2, and V3 for AI-A3. Use gain and bias
adjustment when you input current to set signals to have negative numbers.
Note:
• Set b1-01 = 1 [Frequency Reference Selection 1 = Analog Input] to set inputs individually.
• If F2-01 = 0 and b1-01 = 3 [Option PCB], the drive will detect oPE05 [Run Cmd/Freq Ref Source Sel Err].
Figure 11.77 shows the individual input of analog inputs. H3-xx parameters set the function to input the analog
reference received from the AI-A3 card and to adjust the gain and bias of these signals.
1 : 3 Channels Added Together
Set b1-01 = 3 [Option PCB] to set addition input.
You can input the frequency reference directly. The sum value when you add the input from terminals V1 to V3
becomes the frequency reference.
Set F2-01 = 1 to use the AI-A3 card as addition input.
Figure 11.78 shows addition input. Use F2-02 [Analog Input Option Card Gain] and F2-03 [Analog Input Option
Card Bias] to adjust the analog reference gain and bias for addition input.
Use F2-02 and F2-03 to Adjust the Input Status
When the bias set in F2-03 is 0%, the gain in F2-02 and the addition input value set the ratio (%) of the maximum
output frequency output as the frequency reference.
Note:
A voltage input of 10 V or a current input of 20 mA is the 100% value for each channel.
The bias set in F2-03 sets the ratio (%) of the maximum output frequency output as the frequency reference when
the addition input value is 0%.
Note:
A voltage input of 0 V or a current input of 4 mA is the 0% value for each channel.
• Example 1:
When the gain set in F2-02 is 50%, the bias set in F2-03 is 0%, and the addition input value is 100%, the
frequency reference is 50% of the maximum output frequency. When the addition input value is 200%, the
frequency reference is 100% of the maximum output frequency.
• Example 2:
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Figure 11.77 Analog Input Reference Individual Input Block Diagram
Figure 11.78 Analog Input Reference Addition Input Block Diagram
YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual