Mitsubishi Electric FR-A820-00046 Instruction Manual page 175

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
Example Changing example
With a 0 to 5 V DC 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.
Parameter selection
Turn
Press
Changing the maximum frequency
Turn
Press
Checking the mode/monitor
Press
Start
Turn ON the start switch (STF or STR), then turn the potentiometer (frequency setting potentiometer) clockwise slowly
to full. (Refer to steps
Tab. 4-18:
NOTES 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.
Parameters referred to
Pr. 125
C2 (Pr. 902)
C4 (Pr. 903)
FR-A800
until (Pr. 125) appears.
to show the present set value. (60.00 Hz)
to change the set value to "
to enter the setting."
three times to change to the monitor / frequency monitor.
and in section 4.6.3.) Operate at 50 Hz.
Change the frequency of the maximum analog value
60 Hz
(50 Hz)
Output frequency [Hz]
Bias
C2 (Pr. 902)
0
Frequency setting signal
0
0
C3 (Pr. 902)
Terminal 2 frequency setting gain frequency
Terminal 2 frequency setting bias frequency
Terminal 2 frequency setting gain
Basic operation procedure (External operation)
Operation
". (50.00 Hz)
" and " " flicker alternately.
Initial value
Gain Pr. 125
100%
5 V
10 V
C4 (Pr. 903)
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