Changing The Frequency (60 Hz, Initial Value) At The Maximum Current Input; (At 20 Ma, Initial Value) - Mitsubishi Electric FR-A820-00046 Instruction Manual

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
Example Operation example:
For a frequency setting potentiometer with 4 to 20 mA input, 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.
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 frequency setting potentiometer clockwise slowly to full. (Refer to
steps
The motor is operated at 50 Hz.
Tab. 4-20:
NOTES To set the frequency at 4 mA, use the calibration parameter C5.
Output frequency [Hz]
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.
Parameters referred to
Pr. 126
C5 (Pr. 904)
C7 (Pr. 905)
FR-A800
until " " (Pr. 126) 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 4.6.5.)
Change the frequency of the maximum analog value
60 Hz
(50 Hz)
Bias
C5
(Pr. 904)
0 20
0 4
Frequency setting
0 1
0 2
C6 (Pr. 904)
Terminal 4 frequency setting gain frequency
Terminal 4 frequency setting bias frequency
Terminal 4 frequency setting gain
Basic operation procedure (External operation)
Operation
" (50.00 Hz).
" and " " flicker alternately.
Initial value
Gain Pr. 126
100%
20 mA
5 V
signal
10 V
C7 (Pr. 905)
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