12.2 b: APPLICATION
452 SIEPCYEUOQ2V01A Q2V Technical Manual
Note:
You can also use this diagram to wire terminal AI2.
• Current Input
Refer to Table 12.9 to use a current signal input to one of the MFAI terminals.
Table 12.9 Frequency Reference Current Input
Terminal Signal Level
Parameter Settings
Note
Signal Level
Selection
Function Selection Gain Bias
AI2 4 - 20 mA H3-09 = 2 H3-10 = 4
[Freq Ref/BIAS]
H3-11 H3-12 Set DIP switch S1 to
“I” for current input.
0 - 20 mA H3-09 = 3
Figure 12.18 Example of Setting the Frequency Reference with a Current Signal to Terminal AI2
Changing between Master and Auxiliary Frequency References
Use the multi-step speed reference function to change the frequency reference input between terminals AI1 and
AI2.
2 : Modbus
Use Modbus communications to enter the frequency reference.
3 : Option PCB
Use a communications option card connected to the drive to enter the Run command.
Refer to the instruction manual included with the option card to install and set the option card.
Note:
If you set b1-15 = 3 but you do not connect an option card, oPE03 [Multi-Function Input Setting Err] will flash on the keypad.
4 : Pulse Train Input
Use a pulse train signal from the pulse train input terminal PI to enter the frequency reference.
Do this procedure to make sure that the pulse train signal is operating correctly.
1. Set b1-15 = 4, H6-01 = 0 [PI Pulse Train Function = Freq Ref].
2. Set H6-02 [PI Frequency Scale] to the number of pulses that determine 100% of the frequency reference.
3. The terminal set in H1-xx = 9 [MFDI Function Select = Ext Ref 1/2] is activated.
4. Enter a pulse train signal on the terminal PI and make sure that the keypad shows a correct frequency
reference.
■ b1-16: Run Comm. Sel 2
No.
(Hex.)
Name Description
Default
(Range)
b1-16
(01C5)
Run Comm. Sel 2
Sets the input method for Run Command 2 when the user switches the control circuit terminals
ON/OFF to change the Run command source.
0
(0 - 3)
Activate H1-xx = 2 [MFDI Function Select = External Reference 1/2 Selection] to enable this parameter.
0 : Keypad
Use the keypad to enter the Run command.
You can use the JOG operation or the FWD/REV commands from the keypad.
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