Changing The Output Frequency (60Hz, Initial Value) At The Maximum Voltage Input (5V, Initial Value) - Mitsubishi Electric FR-A720-0.4K Instruction Manual

Start and stop using terminals (External
operation)
3.4.4 Changing the output frequency (60Hz, initial value) at the maximum voltage
input (5V, initial value)
<How to change the maximum frequency>
Changing example
When you use the 0 to 5VDC input and want to change the frequency at 5V from 60Hz (initial
value) to 50Hz, set "50Hz" in Pr. 125.
Selecting the parameter number
Turn until
1.
Press to show the present set value. (60.00Hz)
Changing the maximum frequency
Turn to change the set value to "
2.
Press to set. "
Mode/monitor check
3.
Press twice to choose the monitor/frequency monitor.
Start
4.
To check the setting, turn the start switch (STF or STR) ON and input 5V (turn the potentiometer clockwise slowly to full.)
(Refer to 3.4.3 steps 2 and 3)
The frequency meter (indicator) connected across terminals FM and SD does not indicate exactly 50Hz ... Why?
The meter can be adjusted by calibration parameter C0 FM terminal calibration. (Refer to Chapter 4 of
the Instruction Manual (Applied).)
Set frequency at 0V using calibration parameter
C2 and adjust the indicator using calibration
parameter C0.
(Refer to Chapter 4 of
(Applied).)
REMARKS
As other adjustment methods of frequency setting voltage gain, there are methods to adjust with a voltage applied across
terminals 2 and 5 or adjust at any point without a voltage applied.
(Refer to Chapter 4 of the Instruction Manual (Applied) for the setting method of calibration parameter C4.)
90
Operation
(Pr. 125) appears.
". (50.00Hz).
" and " " flicker alternately.
the Instruction Manual
(Pr. 902)
Initial value
60Hz
Bias
C2
0
0
Frequency setting signal
0
0
C3 (Pr. 902)
Pr.125
Gain
100%
5V
10V
20mA
C4 (Pr. 903)