Basic operation procedure (External operation)
118
BASIC OPERATION
4.6.6 Changing the frequency (60 Hz, initial value) at
the maximum current input (at 20 mA, initial
value)
Change the maximum frequency.
NOTE
• To set the frequency at 4 mA, use the calibration parameter C5.
• Other adjustment methods for the frequency setting current gain are the following: adjustment by applying a current through
terminals 4 and 5, and adjustment using a specified point without applying a current through terminals 4 and 5.
Pr.126 Terminal 4 frequency setting gain frequency page 415
C5(Pr.904) Terminal 4 frequency setting bias frequency page 415
C7(Pr.905) Terminal 4 frequency setting gain page 415
Changing example With a 4 to 20 mA input frequency setting potentiometer, change the frequency at 20 mA from 60 Hz
(initial value) to 50 Hz.
Adjust the setting so that the inverter outputs 50 Hz when 20 mA is input. Set "50 Hz" in Pr.126.
Operation
1.
Parameter selection
Turn until (Pr.126) appears.
Press to show the present set value. (60.00 Hz)
2.
Changing the maximum frequency
Turn to change the set value to " ". (50.00 Hz)
Press to enter the setting." " and " " flicker alternately.
3.
Checking the mode/monitor
Press three times to change to the monitor / frequency monitor.
4.
Start
Turn ON the start switch (STF or STR), then turn the potentiometer (frequency setting potentiometer) clockwise slowly to full.
(Refer to steps 3 and 4 in 4.6.5.)
Operate at 50 Hz.
60Hz
(50Hz)
Pr.126
0
Frequency setting signal
100%
Initial value
Bias
Gain
0
20
4 20mA
Output frequency
(Hz)
C5
(Pr.904)
C6(Pr.904) C7(Pr.905)
01 5V
0 2 10V
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