Basic operation procedure (External operation)
116
BASIC OPERATION
4.6.4 Changing the frequency (60 Hz, initial value) at
the maximum voltage input (5 V, initial value)
Change the maximum frequency.
NOTE
• To set the frequency at 0 V, use the calibration parameter C2.
• Other adjustment methods for the frequency setting voltage gain are the following: adjustment by applying a voltage directly
across terminals 2 and 5, and adjustment using a specified point without applying a voltage across terminals 2 and 5.
Pr.125 Terminal 2 frequency setting gain frequency page 415
C2(Pr.902) Terminal 2 frequency setting bias frequency page 415
C4(Pr.903) Terminal 2 frequency setting gain page 415
Changing example With a 0 to 5 VDC input frequency setting potentiometer, change the frequency at 5 V from 60 Hz
(initial value) to 50 Hz.
Adjust the setting so that the inverter outputs 50 Hz when 5 V is input. Set "50 Hz" in Pr.125.
Operation
1.
Parameter selection
Turn until (Pr.125) 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 2 and 3 in 4.6.3.)
Operate at 50 Hz.
60Hz
(50Hz)
Output frequency
(Hz)
0
0
Frequency setting signal
100%
10V
Initial value
Bias
05V
Pr.125
Gain
C2
(Pr.902)
C3(Pr.902) C4(Pr.903)
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