Operation Using External Switches (External Operation) - Mitsubishi Electric FATEC FR-A800 Manual

2
UNDERSTANDING INVERTER SYSTEM
2.5.8

Operation using external switches (External operation)

Turn ON the STF/STR signal 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)).
[Connection diagram]
(The inverter supplies 5 V power to the frequency setting potentiometer (Terminal 10))
Operation example
1. Turning ON the power of the inverter
The operation panel is in the monitor mode.
2. Start
Turn ON the start switch (STF/STR signal). [FWD] or [REV] indicator blinks as no frequency command is given.
Acceleration → constant speed
Turn the potentiometer (frequency setting potentiometer) clockwise slowly to full. The frequency value on the
3.
monitor increases according to the setting of F010 (Pr.7) Acceleration time, and "
the monitor. [FWD] indicator is ON during the forward rotation, and [REV] indicator is ON during the reverse rotation.
Deceleration
Turn the potentiometer (frequency setting potentiometer) counterclockwise slowly to full. The frequency value on
4.
the monitor decreases according to the setting of F011 (Pr.8) Deceleration time, and "
Then, the motor stops rotating. [FWD] or [REV] indicator blinks.
Stop
5.
Turn OFF the start switch (STF/STR signal). [FWD] or [REV] indicator turns OFF.
When both the forward rotation switch (STF) and the reverse rotation switch (STR) are ON,
the motor cannot be started. If both are turned ON while the inverter is running, the inverter
decelerates the motor to a stop.
Forward
rotation start
Reverse
rotation start
Switch
Frequency setting
potentiometer
Potentiometer
Operate at 60 Hz.
Operation
2.5 How to use the operation panel FR-DU08
Inverter
STF
STR
SD
10
2
5
1
2
3
4
" (60.00 Hz) appears on
5
" (0.00 Hz) appears.
6
7
8
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