Mitsubishi Electric 800 Series, Инструкция по эксплуатации, Страница: 90 / 727

Basic operation procedure (External operation)
BASIC OPERATION
89
4
4.3.4
Changing the frequency (60 Hz, initial value) at
the maximum voltage input (5 V, initial value)
POINT POINT
Change the maximum frequency.
NOTE
• To set the frequency at 0 V, use the Pr.902 .
• 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 Terminal 2 frequency setting gain frequency page 402
Pr.902 Terminal 2 frequency setting bias frequency page 402
Pr.903 Terminal 2 frequency setting gain page 402
Changing example With a 0 to 5 VDC 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 .
Operation
1.
Changing the maximum frequency
Set "50.00 Hz" in Pr.125 .
2.
Checking the mode/monitor
Press to change to the monitor / frequency monitor.
3.
Start
Turn ON the start switch (STF or STR), then turn the potentiometer (frequency setting potentiometer) clockwise slowly to full.
(Refer to steps 2 and 3 in 4.3.3.)
Operate at 50 Hz.
60 Hz
Output frequency
(Hz)
0
0
Frequency setting signal
100%
10 V
Initial value
Bias
0 5 V
Pr.125 (Pr.903) Gain
Pr.902
Pr.902 Pr.903