Changing The Frequency (60 Hz, Initial Value) At The Maximum Voltage Input (5 V, Initial Value) - Mitsubishi Electric FR-A820-00046 (0.4K) Instruction Manual

NOTE
• When both the forward rotation start switch (STF signal) and the reverse rotation start switch (STR signal) are turned ON, the
motor cannot be started. If both are turned ON while the inverter is running, the inverter decelerates to a stop.
• Pr.178 STF terminal function selection must be set to "60" (or Pr.179 STR terminal function selection must be set to "61")
(initial value).
Parameters referred to
Pr.7 Acceleration time, Pr.8 Deceleration
Pr.178 STF terminal function selection, Pr.179 STR terminal function
4.6.4 Changing the frequency (60 Hz, initial value) at the
maximum voltage input (5 V, initial value)
• 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.
156
4. BASIC OPERATION
4.6 Basic operation procedure (External operation)
timepage 349
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)
0
0
0
C3(Pr.902)
selectionpage 496
". (50.00 Hz)
" and " "are displayed alternately.
Initial value
100%
Frequency setting signal
Gain Pr.125
5V
10V
C4(Pr.903)