Mitsubishi Electronics FR-F700-NA ユーザーズマニュアル

Appropriate power supply voltage is not applied.
(Operation panel display is not provided.)

Power ON a moulded case circuit breaker (MCCB), an 
earth leakage circuit breaker (ELB), or a magnetic 
contactor (MC).

—

Check for the decreased input voltage, input phase loss, 
and wiring.
If only the control power is ON when using a separate 
power source for the control circuit, turn ON the main 
circuit power.

Motor is not connected properly.

Check the wiring between the inverter and the motor.
If commercial power supply-inverter switchover function 
is active, check the wiring of the magnetic contactor 
connected between the inverter and the motor.

The jumper across P/+ and P1 is disconnected.
(FR-F720-02330 (01160) or less)

Securely fit a jumper across P/+ and P1.
When using a DC reactor (FR-HEL), remove the jumper 
across P/+ and P1, and then connect the DC reactor.

Start signal is not input.

Check the start command source, and input a start 

signal.

PU operation mode: 

/

External operation mode : STF/STR signal

Both the forward and reverse rotation start signals (STF, 
STR) are input simultaneously.

Turn ON only one of the forward and reverse rotation 
start signals (STF or STR).
If STF and STR signals are turned ON simultaneously in 
the initial setting, a stop command is given.

Frequency command is zero.
(FWD or REV LED on the operation panel is flickering.)

Check the frequency command source and enter a 
frequency command.

AU signal is not ON when terminal 4 is used for 
frequency setting.
(FWD or REV LED on the operation panel is flickering.)

Turn ON the AU signal.
Turning ON the AU signal activates terminal 4 input.

Output stop signal (MRS) or reset signal (RES) is ON.
(FWD or REV LED on the operation panel is flickering.)

Turn MRS or RES signal OFF.
Inverter starts the operation with a given start command 
and a frequency command after turning OFF MRS or 
RES signal. 
Before turning OFF, ensure the safety.

CS signal is OFF when automatic restart after 
instantaneous power failure function is selected (Pr. 57 
≠ "9999").
(FWD or REV LED on the operation panel is flickering. )

Turn ON the CS signal.
Restart operation is enabled when restart after 
instantaneous power signal (CS) is ON.

Jumper connector of sink - source is wrongly selected.
(FWD or REV LED on the operation panel is flickering.)

Check that the control logic switchover jumper connector 
is correctly installed.
If it is not installed correctly, input signal is not 
recognized.

Voltage/current input switch is not correctly set for analog 
input signal (0 to 5V/0 to 10V, 4 to 20mA).
(FWD or REV LED on the operation panel is flickering.)

Set Pr. 73, Pr. 267, and a voltage/current input switch 
correctly, then input an analog signal in accordance with 
the setting.

 was pressed.

(Operation panel indication is 

(PS).)

During the External operation mode, check the method 

of restarting from a 

 input stop from PU.

Two-wire or three-wire type connection is wrong.

Check the connection.
Connect STOP signal when three-wire type is used.