Setting The Frequency Using An Analog Signal (Voltage Input) - Mitsubishi Electric FR-A800 Series Instruction Manual

4.5.4 Setting the frequency using an analog signal
(voltage input)
• Use
• Use the frequency setting potentiometer to give a frequency command (by connecting it to 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 via terminal 10.)
Frequency setting
potentiometer
Potentiometer
The following shows the procedure to operate at 60 Hz.
Operating procedure
1.
Turning ON the power of the inverter
The operation panel is in the monitor mode.
2.
Changing the operation mode
Set "4" in Pr.79. [PU] and [EXT] indicators are ON. (To change the setting, refer to
3.
Start
Press
4.
Acceleration → constant speed
Turn the frequency setting potentiometer clockwise slowly to full. The frequency value on the monitor increases
according to the setting of Pr.7 Acceleration time, and "
5.
Deceleration
Turn the frequency setting potentiometer counterclockwise slowly to full. The frequency value on the monitor
decreases according to the setting of Pr.8 Deceleration time, the monitor displays "
motor stops rotating. [FWD] or [REV] indicator blinks.
6.
Stop
Press
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 calibration parameter C2
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 V ±0.5 VDC). Use Pr.125 or Pr.C4 to adjust the output frequency at the maximum analog input as required. (Refer
to page
• 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 or Pr. C4 to adjust the output frequency at the maximum analog input as required.
(Refer to
152
4. BASIC OPERATION
4.5 Basic operation procedure (PU operation)
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or on the operation panel (FR-DU08) to give a start command.
Inverter
10
2
5
or . [FWD] or [REV] indicator blinks as no frequency command is given.
. [FWD] or [REV] indicator turns OFF.
505.)
page 505.)
search engine
Operation panel
(FR-DU08)
" (60.00 Hz) appears on the monitor.
page 142.)
" (0.00 Hz), and the