Changing The Frequency (60 Hz, Initial Value) At The Maximum Voltage Input (5 V, Initial Value) - Mitsubishi Electric FR-A800 Series Instruction Manual

4.6.4
• Change the maximum frequency.
The following shows the procedure to change the frequency at 5 V from 60 Hz (initial value) to 50 Hz using a frequency setting
potentiometer for 0 to 5 VDC input. Set 50 Hz in Pr.125 so that the inverter outputs 50 Hz at 5 V input.
Operating procedure
1.
Selecting the parameter
Turn
Press
2.
Changing the maximum frequency
Turn
Press
3.
Selecting the mode and the monitor item
Press
4.
Start
Turn ON the start switch (STF/STR signal), and turn the frequency setting potentiometer clockwise slowly to full.
(Refer to steps 2 and 3 in 4.6.3.)
The motor is operated at 50 Hz.
NOTE
• To change the frequency at the input of 0 V (minimum voltage), 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. (Refer
to
Parameters referred to
Pr.125 Terminal 2 frequency setting gain
C2(Pr.902) Terminal 2 frequency setting bias
C4(Pr.903) Terminal 2 frequency setting
Downloaded from ManualsNet.com
Changing the frequency (60 Hz, initial value) at the
maximum voltage input (5 V, initial value)
until " " (Pr.125) appears.
to read the present set value. (60.00 Hz)
to change the set value to "
to confirm the selection. "
three times to select the monitor mode, and change the monitor item to the frequency.
60Hz
(50Hz)
Output frequency
(Hz)
Bias
C2
(Pr.902)
C3(Pr.902)
page 505.)
frequencypage 505
frequencypage 505
gainpage 505
search engine
". (50.00 Hz)
" and "
Initial value
0
Frequency setting signal
0
0
"are displayed alternately.
Gain Pr.125
100%
5V
10V
C4(Pr.903)
4. BASIC OPERATION
4.6 Basic operation procedure (External operation)
1
2
3
4
5
6
7
8
9
10
159