
Basic operation procedure (PU operation)
84
4.2.3
Setting the frequency with analog signals
(voltage input)
POINT
POINT
• Use the operation panel (
or
)
to give a start command.
• Use the potentiometer (frequency setting potentiometer) to give a frequency command (by connecting it across terminals 2
and 5 (voltage input)).
• Set
Pr.79 Operation mode selection
= "4" (External/PU combination operation mode 2).
[Connection diagram] (The inverter supplies 5 V power to the frequency setting potentiometer (terminal 10).)
NOTE
• To change the frequency (60 Hz) at the maximum voltage input (initial value 5 V), adjust
Pr.125 Terminal 2 frequency
setting gain frequency
.
• To change the frequency (0 Hz) at the minimum voltage input (initial value 0 V), adjust the
Pr.902 Terminal 2 frequency
setting bias frequency
.
• When terminal 10 is used, the maximum output frequency may fluctuate in a range of ±6 Hz due to fluctuations in the output
voltage (5 ±0.5 VDC). Use
Pr.125
to adjust the output frequency at the maximum analog input as required. (Refer to
• When terminal 10E is used, the maximum output frequency may fluctuate (in a range of ±2 to 3 Hz) due to fluctuations in the
output voltage (10 ±0.4 VDC). Use
Pr.125
to adjust the output frequency at the maximum analog input as required. (Refer to
Parameters referred to
Pr.7 Acceleration time, Pr.8 Deceleration time
Pr.79 Operation mode selection
Pr.125 Terminal 2 frequency setting gain frequency
Pr.902 Terminal 2 frequency setting bias frequency
Operation example
Operate at 60 Hz.
Operation
1.
Screen at power-ON
The monitor display appears.
2.
Changing the operation mode
Set "4" in
Pr.79
. [PU+E] indicator is on.
3.
Start
Press
or
. [FWD] or [REV] indicator is on.
4.
Acceleration
→
constant speed
Turn the potentiometer (frequency setting potentiometer) clockwise slowly to full. The frequency value on the indication
increases in
Pr.7 Acceleration time
, and "60.00 Hz" appears.
5.
Deceleration
Turn the potentiometer (frequency setting potentiometer) counterclockwise slowly to full. The frequency value on the
indication decreases in
Pr.8 Deceleration time
, and the motor stops rotating with "0.00 Hz" displayed.
6.
Stop
Press
. [FWD] or [REV] indicator turns OFF.
Inverter
Operation panel
Frequency setting
potentiometer
5
10
2
Potentiometer
Summary of Contents for 800 Series
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