12.2 b: APPLICATION
516 SIEPYEUOQ2A01A AC Drive Q2A Technical Manual
Figure 12.1 Example of Setting the Frequency Reference with a Voltage Signal to Terminal AI1
Note:
You can also use this diagram to wire terminals AI2 and AI3.
• Current Input
Refer to Table 12.4 to use a current signal input to one of the MFAI terminals.
Table 12.4 Frequency Reference Current Input
Terminal Signal Level
Parameter Settings
Note
Signal Level
Selection
Function Selection Gain Bias
AI1 4 mA to 20 mA H3-01 = 2 H3-02 = 0
[Frequency Reference]
H3-03 H3-04 Set DIP switch S1-1 to “I” for
current input.
0 - 20 mA H3-01 = 3
AI2 4 mA to 20 mA H3-09 = 2 H3-10 = 0
[Frequency Reference]
H3-11 H3-12 Set DIP switch S1-2 to “I” for
current input.
0 - 20 mA H3-09 = 3
AI3 4 mA to 20 mA H3-05 = 2 H3-06 = 0
[Frequency Reference]
H3-07 H3-08 Set DIP switch S1-3 to “I” for
current input.
Set DIP switch S4 to “AI” for
analog input.
0 - 20 mA H3-05 = 3
Figure 12.2 Example of Setting the Frequency Reference with a Current Signal to Terminal AI2
Note:
You can also use this diagram to wire terminals AI1 and AI3.
Changing between master and auxiliary frequency references
Use the multi-step speed reference function to change the frequency reference input between terminals AI1, AI2,
and AI3.
2 : Modbus
Use Modbus communications to enter the frequency reference.
3 : Option PCB
Use a communications option card or input option card connected to the drive to enter the frequency reference.
Refer to the instruction manual included with the option card to install and set the option card.
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