Parameter Details
12
12.2 b: APPLICATION
SIEPYEUOQ2A01A AC Drive Q2A Technical Manual 525
Figure 12.17 Example of Setting the Frequency Reference with a Current Signal to Terminal A2
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.
Note:
If b1-01 = 3 but no connected option card, then oPE05 [Run Cmd/Freq Ref Source Sel 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 b1-01 = 4, H6-01 = 1 [PI Pulse Train Function = PIDFbk Value].
2. Set H6-02 [PI Frequency Scale] to the number of pulses that determine 100% of the frequency reference.
3. 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)
This parameter is enabled when H1-xx = 9 [MFDI Function Select = Ext Ref 1/2] is activated.
0 : Keypad
Use the keypad to enter the Run command.
You can use the JOG operation or the FWD/REV commands from the keypad.
Note:
will illuminate when the keypad is the Run command source.
1 : Analog Input
Use the control circuit terminals to enter the Run command. Select the input method for the Run command with
an H1-xx parameter
Set H1-xx = 1 to 5 [3-Wire Sequence, Run Command (2-Wire Sequence)]. The default setting is 2-wire sequence
1.
• 2-wire Sequence 1
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